MK-CONFIGURE(7) MK-CONFIGURE(7)

mk-configure - lightweight replacement for GNU autotools

mk-configure is a collection of include files for bmake (portable version of NetBSD make) and a number of executables. It is intended to simplify crossplatform development and software building.

There are only a few top-level makefiles: mkc.init.mk, mkc.mk, mkc.configure.mk, mkc.minitest.mk. Everything else (mkc_imp.*.mk files) is included implicitely. Do not use mkc_imp.*.mk files directly! If you do, I cannot guarantee backward compatibility. mkc.configure.mk is included automatically by mkc.mk, but can be included explicitely. mkc.minitest.mk provides a trivial support for regression tests and should be included explicitely. Usually mk-c makefiles consist of variables assignments and inclusion of mkc.mk in the and. One can also use mkc.prog.mk, mkc.lib.mk, mkc.files.mk, mkc.subdir.mk and mkc.subprj.mk instead of mkc.mk. The latter activates mkc.lib.mk if variable LIB is set, mkc.prog.mk if variables PROG or PROGS are set, mkc.subprj.mk if variable SUBPRJ is set, mkc.subdir.mk if variable SUBDIR is set, and mkc.files.mk otherwise.

To get system-wide configuration parameters, mkc.init.mk loads "${MAKECONF}" file if it exists. Otherwise, it loads /etc/mkcmake.conf if it exists. If neither ${MAKECONF} nor /etc/mkcmake.conf exist, it tries to load /etc/mk.conf file. If "${SRCTOP}/Makefile.common" file exists it is also included by all subprojects. Unless SRCTOP variable is set, "../Makefile.inc" is also included if exists. These files may define any of the variables described below. Compiler-specific defaults are also loaded from "~/.mkcmake" or system directories. This compiler-specific defaults are determined at build time or with the help of mkc_compiler_settings utility.

Below in square brackets the default value for variables are specified. In triangle brackets -- typical way of use, where I means "Initialized by mk-configure", Iu means "Initialized by mk-configure but may be overriden by user", Im means "Initialized by mk-configure but may be set in Makefile", U means "Usually set by user", M means "May be set or changed in project's Makefile" and Mu means "May be set in project's Makefile but may be initialized or overriden by user".

Mk-configure provides the following targets:
all
build everything.
clean
clean temporary files and directories with the help of ${CLEANFILES_CMD} and ${CLEANDIRS_CMD} commands.
cleandir
remove all of the files removed by the target clean, as well as cache files created by mkc.configure.mk.
installdirs
create target directories.
install
install programs, libraries, files, include files, manual pages etc. to the target directories with the help of ${INSTALL} program.
uninstall
remove installed files with the help of ${UNINSTALL} command.
configure
check for MKC_ERR_MSG variable and fails if it set printing an error message
depend
create .depend_${.CURDIR:T} file containing list of dependencies (see mkdep(1)).
filelist
output a list of destination files of the project, one per line, e.g.

/usr/local/bin/hello
/usr/local/man/man1/hello.1
obj
if MKOBJDIR is "yes", creates object directories (${.OBJDIR}) according to MAKEOBJDIR and MAKEOBJPREFIX variables. Current umask is used for this.
mkgen
See mkc_imp.foreign_autotools.mk.
bin_tar, bin_targz, bin_tarbz2, bin_zip, bin_deb
build software, install it to a temporary directory (using DESTDIR) and create .tar/.tar.gz/.tar.bz2/.zip/.deb archive containing all installed files. The target bin_deb expects debian control files in DEBIAN subdirectory, see examples/files for the sample.

NOTE: Commands associated with targets all, install, clean, cleandir, depend, test, installdirs, uninstall, configure and filelist in Makefile override the standard behaviour.

NOTE: All targets in this list have pre_*, do_* and post_* counterparts. See ALLTARGETS for details.

This file is included by mkc.mk and mkc.configure.mk automatically but can be used by users directly. mkc.init.mk uses the following variables.
AFLAGS
Options to ${CC} when compiling or linking .s or .S assembly source files. []
AR
Create, modify, and extract from archives. <Iu> [ar]
ARFLAGS
Options to ${AR}. <Iu> [rl]
AS
Assembler. <Iu> [as]
BINDIR
Target directory for utilities. <Iu Mu> [${PREFIX}/bin]
BMAKE_REQD
Minimal required version of bmake. If it is older, mkcmake exits with error. <Im>
BZIP2
bzip2 copression tool. <Iu> [bzip2]
CC
C compiler. <Iu> [cc]
CC_PREFIX
Prefix command for ${CC}, for example, distcc or ccache. <Iu> []
CC_TYPE
C compiler type. This variable is set by mk-configure and can be overriden by user. It can get the following values:

Value     Description
----------------------
gcc       GNU C/C++ compiler
pcc       Portable C compiler
icc       Intel C/C++ compiler
msc       Microsoft C/C++ compiler
armcc     ARM C/C++ compiler
hpc       HP-UX C/C++ compiler
sunpro    SUNWspro C/C++ compiler
ibmc      IBM C/C++ compiler (Visual Age for C/C++?)
bcc       Borland C/C++ compiler
watcom    Watcom C/C++ compiler
como      COMO C/C++ compiler
decc      DEC C
mipspro   MIPSpro C compiler

<Iu> [no]

CC_VERSION
C compiler version. <I>
CCSTD
Add C language standard command line option to the compiler. Supported options: c89, gnu89 (C89 with GNU extensions), c99, gnu99 (C99 with GNU extensions), c11, gnu11 (C89 with GNU extensions), c17, gnu17 (C17 with GNU extensions). If compiler is not known for mk-configure or does not support appropriate option, no additional options are applied. <M> []
CFLAGS
Additional flags to the compiler when creating C objects. <IM>
CFLAGS0
The same as CFLAGS but CFLAGS0 is passed to the compiler before CFLAGS. Normally, CFLAGS0 should be modified in makefiles and should not be set from environment by user. <M>
CFLAGS.check
Same as CFLAGS but every option is checked whether it is a valid one for C compiler. Double underline in the flag is considered as a single space character. <M> [unset]
CFLAGS.dflt.<cctype>, CXXFLAGS.dflt.<cxxtype>
Additional flags passed to C or C++ compilers according to their types (CC_TYPE and CXX_TYPE). <Iu>
CFLAGS.pic, CXXFLAGS.pic
Options for C and C++ compilers for generating position independent code. On some platforms it makes sense to override these variables (initialized by mk-configure) for better performance, for example, one may use -fpic instead of -fPIC with GNU C/C++ compilers. See SHLIB_MAJOR, MKPIE etc. variables for more information. <Iu>
CFLAGS.pie, CXXFLAGS.pie
Options for C and C++ compilers for generating position independent executables. On some platforms it makes sense to override these variables (initialized by mk-configure) for better performance, for example, one may use -fpic instead of -fPIC with GNU C/C++ compilers. See MKPIE variable for more information. <Iu>
CFLAGS.ssp, CXXFLAGS.ssp
Options for C and C++ compilers for generating stack protection code. See USE_SSP variable for more information. <Iu>
CFLAGS.warns.<cctype>.<warn-level>, CXXFLAGS.warns.<cxxtype>.<warn-level>
These variables are set by mk-configure and enable warning messages for C or C++ compilers according to their types (CC_TYPE and CXX_TYPE) and warning level (WARNS). <Iu>
CFLAGS_<project>
Similar to CFLAGS but for project ${PROJECTNAME}. <U>
CFLAGS_<source>
Similar to CFLAGS but for the specified source file. Basename of the source file is used. <Mu>
CLEANDIRS_CMD
Command for removing directories used by targets "clean" and "cleandir". <Iu> [${RM} -rf]
CLEANFILES_CMD
Command for removing files used by targets "clean" and "cleandir". <Iu> [${RM} -f]
COPTS
Additional flags to the compiler when creating C objects. <U>
COPTS_<project>
Similar to COPTS but for project ${PROJECTNAME}. <U>
CPP
C Pre-Processor. <Iu> [cpp]
CPPFLAGS
Additional flags to the C/C++ pre-processor. <Iu>
CPPFLAGS0
The same as CPPFLAGS but CPPFLAGS0 is passed to the compiler before CPPFLAGS. Normally, CPPFLAGS0 should be modified in makefiles and should not be set from environment by user. <M>
CPPFLAGS_<project>
Similar to CPPFLAGS but for project ${PROJECTNAME}. <U>
CPPFLAGS_<source>
Similar to CPPFLAGS but for the specified source file. Basename of the source file is used. <Mu>
CXX
C++ compiler. <Iu> [c++]
CXX_PREFIX
Prefix command for ${CXX}, for example, distcc or ccache. <Iu> []
CXX_TYPE
C++ compiler type. This variable is set by mk-configure and can be overriden by user. It can get the same values as CC_TYPE variable. <Iu>
CXX_VERSION
C++ compiler version. <I>
CXXFLAGS
Additional flags to the compiler when creating C++ objects. <Iu> []
CXXFLAGS0
The same as CXXFLAGS but CXXFLAGS0 is passed to the compiler before CXXFLAGS. Normally, CXXFLAGS0 should be modified in makefiles and should not be set from environment by user. <M>
CXXFLAGS.check
Same as CXXFLAGS but every option is checked whether it is a valid one for C++ compiler. <M> [unset]
CXXFLAGS_<project>
Similar to CXXFLAGS but for project ${PROJECTNAME}. <U>
CXXFLAGS_<source>
Similar to CXXFLAGS but for the specified source file. Basename of the source file is used. <Mu>
CXXOPTS
Additional flags to the compiler when creating C++ objects. <U>
CXXOPTS_<project>
Similar to CXXOPTS but for project ${PROJECTNAME}. <U>
CXXSTD
Add C++ language standard command line option to the compiler and linker. Supported options: c++98, gnu++98 (C++98 with GNU extensions), c++11, gnu++11 (C++11 with GNU extensions), c++14, gnu++14 (C++14 with GNU extensions), c++17, gnu++17 (C++17 with GNU extensions) If compiler is not known for mk-configure or does not support appropriate option, no additional options are applied. <M> []
DATADIR
Target directory for architecture-independent text files. <Iu> [${PREFIX}/share]
DESTDIR
Installation prefix. <U> []
GZIP
gzip copression tool. <Iu> [gzip]
INCSDIR
Target directory for header files. <Iu> [${PREFIX}/include]
INFODIR
Target directory for .info files. <Iu> [${PREFIX}/info]
INSTALL
install(1) command. <Iu> [install or mkc_install]
INSTALL_FLAGS
Flags passed to ${INSTALL} program. <Iu> [-c]
LD
Linker. <Iu> [ld]
LD_TYPE
Linker type. This variable is set by mk-configure and can be overriden by user. It can get the following values:

Value        Description
----------------------
aixld        AIX linker
darwinld     Darwin linker (MacOS-X)
gnuld        GNU linker
hpld         HP-UX linker
interixld    Interix linker
scold        SCO linker
sunld        SunOS linker
osf1ld       OSF1 linker (Tru64)
irixld       IRIX linker

<Iu>

LEX
Lexical analyzer. <Iu> [lex]
LEXLIB
Object file for lex. <Iu> [-ll]
LFLAGS
Options to ${LEX}. <Iu> []
LIBDIR
Target directory for libraries. <Iu> [${PREFIX}/lib]
LIBEXECDIR
Target directory for system utilities. <Iu> [${PREFIX}/libexec]
LN
ln(1) tool. <Iu> [ln]
LN_S
Tool equivalent to ln -s. <Iu> [${LN} -s]
LORDER
List dependencies for object files. <Iu> [lorder]
LPREFIX
Symbol prefix for ${LEX} (see -P option in lex(1)). <Iu> [yy] <Iu> [yy]
MAKE
bmake(1). [bmake or make on NetBSD]
MAKEDEPEND
makedepend(1) tool. <Iu>
MKC_ERR_MSG
If set, keep an error message. <I M> []
MKC_REQD
Minimal required version of mk-configure. If required version is not found, mkcmake fails. This variable should be set before mkc.init.mk is included, directly or indirectly. <M>
MKC_VERSION
Version of mk-configure. This variable is always set to non-empty value when mkc.*.mk include files are used, so you can use it to initialize mk-c variables in mk.conf. For example:

/etc/mk.conf:
   ...
   .ifdef MKC_VERSION
   COPTS?=      -O2 -Werror
   SHRTOUT=    yes
   .endif # MKC_VERSION

<I>

MKCOMPILERSETTINGS
At build time mk-configure detects some compilers capabilities and saves them to system-wide mkc_imp.cc_${CC_TYPE}-${CC_VERSION}.mk (for C compiler) and mkc_imp.cxx_${CXX_TYPE}-${CXX_VERSION}.mk (for C++ compiler) files. At run time mk-configure loads these files if necessary. If they are absent, that is, if you use compilers unknown to mk-configure, it exits with error. If order to fix this, you have to run mkc_compiler_setting(1) utility manually. This utility generates similar files in ${HOME}/.mkcmake directory. However, if MKCOMPILERSETTINGS variable is set to yes, mkc_compiler_setting(1) is run automaticlly and mk-configure loads the generated files. <Iu> [no]
MKDEP
mkdep(1) tool. <Iu>
MKDIR
mkdir(1) tool. <Iu> [mkdir]
MKINSTALL
If not "yes", build everything but do not install. This option is useful for e.g. internal libraries. <Mu> [yes]
MKINSTALLDIRS
If "yes", install target directories (target installdirs) before installing files (target install). <Iu> [yes]
MKOBJDIR
If "yes", the target "obj" creates object directories, if "auto", object directories are created automatically. Otherwise object directories are not created. <Iu> [auto]
NM
List symbols from object files. <Iu> [nm]
OBJCOPY
Copy and translate object files. <Iu> [objcopy]
OBJDUMP
Display information from object files. <Iu> [objdump]
OBJTOP
Top-level object directory which defaults to ${.OBJDIR} if ${.MAKE.LEVEL} is 0. <I>
PREFIX
Target directory. <U> [/usr/local]
PROJECTNAME
The name of a project. By default it is set to ${PROG}, ${LIB} or ${.CURDIR:T}. For a top-level project using either mkc.subdir.mk or mkc.subprj.mk it makes sense to set this variable explicitely in project's Makefile. This variable is initialized before including mk.conf, so you can use it to change build options, e.g. during development process.

/etc/mk.conf:
   ...
   .ifdef MKC_VERSION
   ...
   .if ${PROJECTNAME} == "foo"
   SHRTOUT=    yes
   PROG.gcc=   /usr/bin/gcc
   CC_TYPE=    gcc
   COPTS=      -O0 -g
   .endif
   .endif # MKC_VERSION

<Im>

RANLIB
Generate index to archive. <Iu> [ranlib]
RM
rm(1) tool. <Iu> [rm]
SBINDIR
Target directory for administration utilities. <Iu> [${PREFIX}/sbin]
SHAREDSTATEDIR
Target directory for modifiable architecture-independent data files. <Iu> [${PREFIX}/com]
SHRTOUT
If not "no", output messages about compiling, linking and creating libraries are shortened and formatted. <Iu> [no]
SIZE
List section sizes and total size. <Iu> [size]
SRC_PATHADD
List of directories added to .PATH. <Im> []
SRCTOP
Top-level project's directory which defaults to ${.CURDIR} if ${.MAKE.LEVEL} is 0. If set, "../Makefile.inc" is not included. Also, the following command mkcmake -C subproject target
will be translated to cd ${SRCTOP}; mkcmake target-subproject <Iu>
STRIP
Discard symbols from object files. <Iu> [strip]
STRIPFLAG
The flag passed to the install program to cause the binary to be stripped. <Iu>
SYSCONFDIR
Target directory for configuration files. <Iu> [${PREFIX}/etc]
TAR
tar archiver. <Iu> [tar]
TSORT
Topological sort of a directed graph. <Iu> [tsort -q]
UNINSTALL
Command for removing files used by target "uninstall". <Iu> [${RM} -f]
USE_SSP
If "yes", enables stack protection code, which detects stack overflows and aborts the program. This enhances security but imposes some performance penalty. <U>
VARDIR
Target directory for modifiable single-machine data files. <Iu> [${PREFIX}/var]
WARNERR
If "yes", force warnings to be reported as errors. At the moment this is supported for GCC, clang, Intel C/C++ and Sun's C/C++ compilers. <Iu> [yes if WARNS=4, no otherwise ]
WARNS
Crank up warning options; the distinct levels are (the higher the more strict):

WARNS=0
WARNS=1
WARNS=2
WARNS=3
WARNS=4

At the moment WARNS is supported for GCC and HP-UX C/C++ only. WARNS=0 means disabling all warnings if such feature is provided by compiler and mk-configure. <Mu> [0]

YACC
LALR(1) parser generator. <Iu> [yacc]
YFLAGS
Options to ${YACC}. <Iu> []
YHEADER
If defined, add "-d" to YFLAGS, and add dependencies from <file>.y to <file>.h and <file>.c, and add <foo>.h to CLEANFILES.
YPREFIX
If defined, add "-p ${YPREFIX}" to YFLAGS.
ZIP
zip copression tool. <Iu> [zip]

The include file mkc.files.mk handles the FILES variable and is included from mkc.lib.mk and mkc.prog.mk. List of supported variables:
CLEANDIRDIRS
Additional directories to remove (recursively) for the cleandir target. <I M>
CLEANDIRFILES
Additional files to remove for the cleandir target. <I M>
CLEANDIRS
Additional directories to remove (recursively) for the clean and cleandir targets. <I M>
CLEANFILES
Additional files to remove for the clean and cleandir targets. <I M>
FILES
The list of files to install. <M>
FILESDIR
The location to install the files. <Mu> [${PREFIX}/bin]
FILESDIR_<fn>
The location to install the specific file <fn>. <Mu>
FILESGRP
File group. If bmake is run with root privileges, it defaults to <Mu>
FILESGRP_<fn>
File group of the specific file <fn>. <Mu> ${BINGRP} or to `id -g` otherwise. <Mu>
FILESMODE
File mode. <Mu> [${NONBINMODE}]
FILESMODE_<fn>
File mode of the specific file <fn>. <Mu>
FILESNAME
Optional name to install each file as. <Mu>
FILESNAME_<fn>
Optional name to install <fn> as. <Mu>
FILESOWN
File owner. If bmake is run with root privileges, it defaults to ${BINOWN} or to `id -u` otherwise. <Mu>
FILESOWN_<fn>
File owner of the specific file <fn>. <Mu>

The include file mkc.prog.mk handles building program from one or more source files, along with their manual pages. It has a limited number of suffixes. List of supported variables:
DPINCDIRS
See LIBDEPS in section mk.subprj.mk.
DPLDADD
See LIBDEPS in section mk.subprj.mk.
DPLIBDIRS
See LIBDEPS in section mk.subprj.mk.
EXPORT_DYNAMIC
If "yes", add all symbols to the dynamic symbol table, that is make all symbols visible from dynamic objects at run time (e.g. dlopen-ed objects), otherwise only symbols referenced by some object file will be exported. <M> [no]
LDADD
Additional objects. Usually used for libraries. For example, to link with the compatibility and utility libraries, use:

LDADD+=  -lutil -lcompat

<U>

LDADD0
The same as LDADD but LDFLAGS0 and LDADD0 are passed to the linker before LDFLAGS and LDADD. <M>
LDADD_<project>
Similar to LDADD but for project ${PROJECTNAME}.
LDFLAGS
Additional linker flags. Often used for specifying library directories.

LDFLAGS+=  -L/opt/company/software/lib

<Mu I>

LDFLAGS0
The same as LDFLAGS but LDFLAGS0 and LDADD0 are passed to the linker before LDFLAGS and LDADD. Normally, LDFLAGS0 and LDADD0 should be modified in makefiles and should not be set from environment by user. <M>
LDFLAGS_<project>
Similar to LDFLAGS but for project ${PROJECTNAME}.
MKPIE
If "yes", create Position Independent Executable (PIE), otherwise create a regular executable. <Mu> [no]
MKSHARE
If "no", act as "MKHTML=no MKINFO=no MKCATPAGES=no MKMAN=no". I.e, don't build catman pages, man pages, info documentation,... <Iu> [yes]
PROG
The name of the program to build.
PROGNAME
The name that the above program will be installed as, if different from ${PROG}. <M>
PROGS
The names of the programs to build. If neither PROG nor PROGS is not supplied, nothing is built. <M>
SRCS
List of source files to build the program. If SRCS is not defined, it's assumed to be ${PROG}.c. <M>
SRCS.<prog>
List of source files to build the program prog listed in PROGS. If SRCS.<prog> is not defined, it's assumed to be prog.c. <M>
USE_RELRO
If "yes", enables a technique to harden the data sections of an ELF binary/process. For security reasons it makes sense to set it to YES, it may slow down application startup, though. <Iu> [no]

mkc.prog.mk includes mkc.files.mk and therefore supports all variables supported by it.

The order of options passed to the C compiler: CPPFLAGS0, CPPFLAGS, CPPFLAGS_<project>, CFLAGS.ssp, CFLAGS.pie, CFLAGS.warns, CFLAGS, CFLAGS_<project>, CFLAGS.pic (for shared objects), COPTS, COPTS_<project>

The order of options passed to the C++ compiler: CPPFLAGS0, CPPFLAGS, CPPFLAGS_<project>, CXXFLAGS.ssp, CXXFLAGS.pie, CXXFLAGS.warns, CXXFLAGS, CXXFLAGS_<project>, CXXFLAGS.pic (for shared objects), COPTS, COPTS_<project>

The include file mkc.lib.mk has support for building a static and dynanic library or DLL. mkc.lib.mk uses the following variables:
DPINCDIRS
See LIBDEPS in section mk.subprj.mk.
DPLDADD
See LIBDEPS in section mk.subprj.mk.
DPLIBDIRS
See LIBDEPS in section mk.subprj.mk.
EXPORT_SYMBOLS
Only symbols listed in a specified file (one symbol per line) are exported. Empty lines and comments started with # symbol are ignored. This variable has no effect on some platforms. By default all symbols are exported. <M> []
LDADD LDADD_<project>
Additional objects. See mkc.prog.mk
LDFLAGS LDFLAGS_<project>
Additional linker flags. See mkc.prog.mk
LIB
The name of the library to build. <M>
LIBDIR
See Common variables and mkc.files.mk sections.
LIBGRP
Library group. If bmake is run by an unprivileged user, it defaults to `id -g`. <Iu>
LIBMODE
Library mode. <Iu> [${NONBINMODE}]
LIBOWN
Library owner. If bmake is run by an unprivileged user, it defaults to `id -u`. <Iu>
MAN
The manual pages to be installed (use a .1 - .9 suffix). <M>
MKDLL
If "yes", build and install the dynamically loaded library (<lib>.so) instead of shared library. If "only", do not make static library. <M> [no]
MKSHLIB
If not "no", build and install shared library provided that SHLIB_MAJOR is defined. <IMu> [yes] (for MACHINE_ARCHs that support it)
MKSTATICLIB
If not "no", build and install static library. <IMu> [yes]
MKPICLIB
If not "no", build and install *_pic.a library. <IMu> [no]
MKPROFILELIB
If "no", don't build or install the profiling (*_p.a) libraries. <Iu> [no]
SHLIBMODE
Shared library mode. <Iu>
SHLIB_MAJOR
Major shared library number. If unset, shared library is not built. <M>
SHLIB_MINOR
Minor shared library number. <M> [0]
SHLIB_TEENY
Minor shared library number. <M> []
SRCS
List of source files to build the library. Suffix types .s, .c, and .f are supported. Note, .s files are preferred to .c files of the same name. <M>

Static libraries are ranlib'd when made. mkc.lib.mk includes mkc.files.mk and therefore supports all its variables as well. After creaion of libraries ${.CURDIR:T}.done file is created and used for handling inter-project (See LIBDEPS variable) dependencies.

The order of options passed to the C and C++ compilers are the same as in mkc.prog.mk.

The include file mkc.subprj.mk handles subprojects (subdirectories) organized as a dependency graph. It provides all targets provided by mkc.prog.mk. Variable SUBPRJ contains a list of pairs depdir:dir which mean that subproject dir depends on depdir. mkcmake all command will build all subprojects listed in SUBPRJ in a correct order (starting with subprojects having no dependencies and so on). There is also a target which allows the command bmake <subdir> where <subdir> is any directory listed in the variable SUBPRJ. The following targets are also provided: <target>-<subdir> where <target> is either of the following: all, clean, cleandir, depend, installdirs, install, uninstall and filelist. Also provided are: targets nodeps-<target>-<subdir> and subdir-<target>-<subdir>. Difference between <target>-<subdir> and nodeps-<target>-<subdir> is that mkcmake <target>-<subdir> runs the specified <target> for <subdir> and all its dependencies while mkcmake nodeps-<target>-<subdir> -- only for <subdir>. A target subdir-<target>-<subdir> is a synonym for nodeps-<target>-<subdir> See examples/hello_dictd subdirectory for the sample of use.

mkc.subprj.mk provides the following variables:

ALLTARGETS
A list of targets for which pre_*, do_* and post_* counterparts exist, for example, pre_all, do_all and post_all. pre_* target runs before do_* target which in turn runs before post_*. Unless action is provided for do_* targets they implement the standard behaviour of mk-configure. No action is provided for targets pre_* and post_*, so they are for user's extensions. The standard behaviour for ${ALLTARGETS} may also be extended by adding new prerequisites to targets do_*.
COMPATLIB
Subproject's basename for compatibility library. If this variable is set, MKC_SOURCE_FUNCLIBS and FEATURES do not change SRCS for subprojects other than ${COMPATLIB}. <M> []
EXPORT_VARNAMES
List of variables to export before running make for subdirectories. <Mu> [MKC_CACHEDIRSRCTOPOBJTOPSTATICLIBSCOMPATLIB]
INTERNALLIBS
A list of subprojects (basenames) with internal libraries. These libraries are static and not installed by target "install". <M> []
LIBDEPS
A list of library dependencies. Each token is a colon-separated pair. Its first component is a library subproject (dependency), the second one is the subproject for library or executable. The value of this variable is automatically added to SUBPRJ. Library dependencies listed in LIBDEPS automatically change CPPFLAGS0, LDFLAGS0 and LDADD0 of approptiate subprojects. <M> Suppose, we have <library:program> pair in LIBDEPS, also suppose that variable library is set to "library" subdirectory and variable program is set to "program" subdirectory. ${SRCDIR_library}/linkme.mk file is automatically included from ${SRCDIR_program}/Makefile if it exists. In this file DPLDADD [${library:T:S/^lib//}], DPLIBDIRS [${OBJDIR_${library:S,/,_,g}}] and DPINCDIRS [${SRCDIR_${library:S,/,_,g}} ${OBJDIR_${library:S,/,_,g}}], may be set to non-default values. These three variables then changes LDADD0, LDFLAGS0 and CPPFLAGS0 respectively in subproject "program". The dependency graph specified by variable LIBDEPS is available to all subproject via environment.
MKRELOBJDIR
If "yes", object directories ${OBJTOP}/dir are used. Unlike MAKEOBJDIRPREFIX object directories do not contain top-level ${.CURDIR} in paths. <Iu> [no]
NODEPS
This variable specifies a list of patterns that describes edges from dependency graph in targdep-prjdep:targ-prj or targ-prj:targ formats to be excluded from dependency graph. <M> []
NOEXPORT_VARNAMES
List of variables excluded from EXPORT_VARNAMES. <Mu> []
NOSUBDIR
If for some reason you want to exclude some subdirectories from build, list them in this variable. <U> []
OBJDIR_<dir>
Value of ${.OBJDIR} inside dir subdirectory. Slash symbols inside <dir> are replaced with underlines. In addition, OBJDIR_<dir:T> variable is set to ${OBJDIR_<dir>} if ${SHORTPRJNAME} is "yes".
SHORTPRJNAME
If "yes", special targets with last component of the subprojects are provided. <Im> [yes]
SRCDIR_<dir>
Value of ${.CURDIR} inside dir subdirectory. Slash symbols inside <dir> are replaced with underlines. In addition, SRCDIR_<dir:T> variable is set to ${SRCDIR_<dir>} if ${SHORTPRJNAME} is "yes".
STATICLIBS
A list of subprojects (basenames) with static libraries. If dependency is mentioned in this variable, the suffix _pic is automatically added for PIE-executables or shared libraries that depend on this library. This variable is automatically passed to subprojects via environment. <Mu> []
SUBPRJ
List of subprojects (subdirectories) and dependencies. If the subdirectory doesn't exist the subproject becomes "virtual" and may be used to group several subprojects into a new virtual one. <M>
SUBPRJ_DFLT
List of projects built and installed by default. The default is all projects listed in SUBPRJ. <IMu>
SUBPRJSRCTOP
This variables contains ${.CURDIR} directory and is passed to subprojects. <I> [${.CURDIR}]
TARGETS
A list of recursive targets. "Recursive" means that the target will be called for all subproject recursively (See mkc.subprj.mk and mkc.subdir.mk). <Im> [all, install, installdirs, uninstall, clean, cleandir, depends, test, configure, filelist, obj] By setting this variable in the Makefile one can add new targets for special purposes, for example, static code analysis, partial builds etc.

mkc.subprj.mk provides the following targets:

<subdir> and <subdir:T>
<subdir> is a subdirectory listed in SUBDIR or SUBPRJ. This target is equivalent to all-<subdir>. <subdir:T> means the last component of the directory and is created if ${SHORTPRJNAME} is "yes".
<target>-<subdir>
Runs the specified <target> for the specified <subdir>. The target <target>-<subdir:T> is provided if ${SHORTPRJNAME} is "yes".
subdir-<target>-<subdir> and nodeps-<target>-<subdir>
Runs the specified <target> for the specified <subdir> without dependencies. Targets subdir-<target>-<subdir:T> and nodeps-<target>-<subdir:T> are provided if ${SHORTPRJNAME} is "yes".
print_deps
Outputs the dependency graph on targets in tsort(1) format taking NODEPS and NOSUBDIR variables into account.

The include file mkc.subdir.mk contains the default targets for building subdirectories. It provides the same targets as mkc.prog.mk. For all of the directories listed in the variable SUBDIR, the specified directory will be visited and the target made. There is also a default target which allows the command bmake <subdir> where <subdir> is any directory listed in the variable SUBDIR. As a special case, the use of a token .WAIT as an entry in SUBDIR acts as a synchronization barrier when multiple make jobs are run; subdirs before the .WAIT must complete before any subdirs after .WAIT are started. See bmake(1) for some caveats on use of .WAIT and other special sources. SUBDIR variable is provided as well as all variables provided by mkc.subprj.mk except SUBPRJ.
SUBDIR
List of subdirectories <M> mkc.subprj.mk

mkc.configure.mk is an auxiliary include file for checking platform's features like headers, function or variable declarations, function implementation in a particular libraries, data types sizes etc. This include file is included by mkc.prog.mk and mkc.lib.mk automatically but in some cases it makes sense to include it explicitly. mkc.configure.mk itself includes mkc.init.mk, then mkc.conf.mk , and finally internal include file which updates CPPFLAGS, CFLAGS, LDADD and SRCS. mkc.configure.mk supports the following variables.
MKCHECKS
If "no", none of the checks are performed. It is set to "yes" unless target is "clean" and "cleandir".
MKC_CACHEDIR
Directory where intermediate and cache files are created. It defaults to ${.OBJDIR}. By default MKC_CACHEDIR variable is exported for subprojects. As a result cache files for subprojects are created in the top-level directory. If cache directory doesn't exist, it is created automatically.
MKC_CHECK_BUILTINS
mk-configure provides a number of built-in custom checks, that is, source files to compile or scripts to run in order to check for something. Checks listed in MKC_CHECK_BUILTINS will be run.
Avalable values:
prog_flex, prog_bison, prog_gawk, prog_gm4, prog_gmake
Find flex, bison, GNU awk, GNU m4 or GNU make respectively by analysing program's help and/or version messages. If found, BUILTIN.prog_<progname> is set to the path, otherwise it is set to empty string. Note that gawk may be found as awk, bison as yacc, gm4 as m4, flex as lex and gmake as make.
prog_mkdep, prog_nbmkdep
Find traditional BSD mkdep(1) or recent NetBSD version of it respectively.
endianness
BUILTIN.endianness variable is set to either little, big or unknown depending on a hardware.
MKC_CHECK_CC_OPTS
A list of C compiler options to check. If ${CC} -c support the specified option, variable HAVE_CC_OPT.<option:S/=/_/g> is set to 1 and 0 otherwise. Double underline in the option is considered as a single space character.

Ex.
  MKC_CHECK_CC_OPTS = -Wall -errwarn=%all --param__ssp-buffer-size=1
Res.
 HAVE_CC_OPT.-Wall=1
 HAVE_CC_OPT.-errwarn_%all=0
 HAVE_CC_OPT.--param__ssp-buffer-size_1=1
MKC_CHECK_CCLD_OPTS
Same as MKC_CHECK_CC_OPTS except that option "-c" is not passed to the compiler, so, executable is created. As a result HAVE_CCLD_OPT.<option:S/=/_/g> is set to 1 or 0.
MKC_CHECK_CUSTOM
A list of custom checks (list of names). MKC_CUSTOM_FN.<custom_check_name> is a "C" or "C++" source filename or an executable program for your custom check, e.g., filename.c, filename.cc, subdir/filename.cxx, filename.C, filename.cpp or subdir/executable_script. mk-configure tries to compile or run the specified file and sets CUSTOM.<custom_check_name> variable to 1, 0 or other value. If MKC_CUSTOM_FN.<custom_check_name> is unset, it defaults to custom_check_name.c. Also -DCUSTOM_<CUSTOM_CHECK_NAME>=1 is added to CPPFLAGS if the specified check succeeded unless MKC_NOAUTO is set to 1 and MKC_CUSTOM_NOAUTO.<custom_check_name> is set to "yes". Here <CUSTOM_CHECK_NAME> is uppercase for <custom_check_name>. If MKC_CUSTOM_LINK.<custom_check_name> is "yes", then C or C++ source file is compiled and linked into executable. Also, CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS, LDADD, MKC_CUSTOM_CPPFLAGS.<custom_check_name>, MKC_CUSTOM_CFLAGS.<custom_check_name>, MKC_CUSTOM_CXXFLAGS.<custom_check_name>, MKC_CUSTOM_LDFLAGS.<custom_check_name> and MKC_CUSTOM_LDADD.<custom_check_name> flags are passed to the compiler. Normally cache file name contains <custom_check_name> unless MKC_CUSTOM_CACHE.<custom_check_name> is set to something else.

Ex.  MKC_CHECK_CUSTOM+=               nested_funcs
     MKC_CUSTOM_FN.nested_funcs=      nested_funcs.c
     MKC_CUSTOM_FN.script_check=      checks/script_check
Res. CUSTOM.nested_funcs=        1
     CUSTOM.script_check=        0
     CFLAGS+= -DCUSTOM_NESTED_FUNCS=1

Note that script for the check should be an executable file.

MKC_CHECK_CXX_OPTS
Same as MKC_CHECK_CC_OPTS but for C++ compiler. As a result HAVE_CXX_OPT.<option:S/=/_/g> is set to 1 or 0.
MKC_CHECK_CXXLD_OPTS
Same as MKC_CHECK_CCLD_OPTS but for C++ compiler. As a result HAVE_CXXLD_OPT.<option:S/=/_/g> is set to 1 or 0.
MKC_CHECK_DEFINES
List of define:header to check. <header> part is optional.

As a result of the check bmake's variable HAVE_DEFINE.<define>.<header> (or HAVE_DEFINE.<define>) is set to either 0 or 1.
<header>: tr|./|__|g
Also -DHAVE_DEFINE_<DEFINE>_<HEADER>=1 or -DHAVE_DEFINE_<DEFINE>=1 is added to CPPFLAGS if the specified define was detected unless MKC_NOAUTO is set to 1.
<HEADER>: tr|a-z./|A-Z__|g
<DEFINE>: tr|a-z|A-Z|g

Ex:  MKC_CHECK_DEFINES += RTLD_LAZY:dlfcn.h __GNUC__ _MSC_VER_
Res: HAVE_DEFINE.RTLD_LAZY.dlfcn_h = 1
     HAVE_DEFINE.__GNUC__          = 1
     HAVE_DEFINE._MSC_VER_         = 0
     CFLAGS += -DHAVE_DEFINE_RTLD_LAZY_DLFCN_H=1 \
               -DHAVE_DEFINE___GNUC__=1
MKC_CHECK_FUNCLIBS
List of <function>:<library> pairs to check, <library> part is optional. If <library> is present, presense of <function> in libc is also checked automatically.

As a result of the check bmake's variable HAVE_FUNCLIB.<function>.<library> (or HAVE_FUNCLIB.<function>) is set to either 0 or 1.

If <function> is found in <library> but not in libc or <function> is "main" and is found in <library>, "-l<library>" is automatically added to LDADD unless <function>:<library> is listed in MKC_NOAUTO_FUNCLIBS or MKC_NOAUTO_FUNCLIBS is equal to 1 or MKC_NOAUTO is set to 1

Ex:  MKC_CHECK_FUNCLIBS  += strlcat fgetln getline getopt_long
     MKC_CHECK_FUNCLIBS  += crypt:crypt dlopen:dl nanosleep:rt
     MKC_CHECK_FUNCLIBS  += ftime:compat gettimeofday
     MKC_NOAUTO_FUNCLIBS += ftime:compat
Res: HAVE_FUNCLIB.strlcat      = 1
     HAVE_FUNCLIB.fgetln       = 1
     HAVE_FUNCLIB.getline      = 0
     HAVE_FUNCLIB.getopt_long  = 1
     HAVE_FUNCLIB.crypt        = 0
     HAVE_FUNCLIB.crypt.crypt  = 1
     HAVE_FUNCLIB.dlopen       = 1
     HAVE_FUNCLIB.dlopen.dl    = 0
     HAVE_FUNCLIB.nanosleep    = 1
     HAVE_FUNCLIB.nanosleep.rt = 1
     HAVE_FUNCLIB.ftime        = 0
     HAVE_FUNCLIB.ftime.compat = 1
     HAVE_FUNCLIB.gettimeofday = 1
     LDADD += -lcrypt
MKC_CHECK_FUNCS<N>
List of <func>:<header> to check. <header> part is optional. Here <N> means the number of arguments. As a result of the check bmake's variable HAVE_FUNC<N>.<func>.<header> (or HAVE_FUNC<N>.<func>) is set to either 0 or 1.
<header>: tr|./|__|g
Also -DHAVE_FUNC<N>_<FUNC>_<HEADER>=(0 or 1) (or -DHAVE_FUNC<N>_<FUNC>=(0 or 1)) is added to CPPFLAGS if the specified function was detected unless MKC_NOAUTO is set to 1. If MKC_FUNC_OR_DEFINE.<func> is "yes", equivalent define leads to the same results.
<HEADER>: tr|a-z./|A-Z__|g

 Ex:  MKC_CHECK_FUNCS2 += fgetln:stdio.h
      MKC_CHECK_FUNCS6 += pselect:sys/select.h
      MKC_CHECK_FUNCS1 += htobe32:sys/endian.h
      MKC_FUNC_OR_DEFINE.htobe32 += yes
 Res: HAVE_FUNC2.fgetln.stdio_h = 1
      HAVE_FUNC6.pselect.sys_select_h = 1
      HAVE_FUNC1.htobe32.sys_endian_h=1
      CFLAGS += -DHAVE_FUNC2_FGETLN_STDIO_H=1 \
             += -DHAVE_FUNC6_PSELECT_SYS_SELECT_H=1 \
	     += -DHAVE_FUNC1_HTOBE32_SYS_ENDIAN_H
MKC_CHECK_HEADER_FILES
Same as MKC_CHECK_HEADERS but $CC -E is used for checking instead of $CC -c. Also, HAVE_HEADER_FILE.<header> variables and HAVE_HEADER_FILE<HEADER> defines are set.
MKC_CHECK_HEADERS
List of headers to check with the help of $CC -c. As a result of the check bmake's variable HAVE_HEADER.<header> is set to either 0 or 1.
<header>: tr|./|__|g
Also -DHAVE_HEADER_<HEADER>=(0 or 1) is added to CPPFLAGS unless MKC_NOAUTO is set to 1.
<HEADER>: tr|a-z./|A-Z__|g

Ex:  MKC_CHECK_HEADERS += sys/time.h fcntl.h execinfo.h
Res: HAVE_HEADER.sys_time_h = 1
     HAVE_HEADER.fcntl_h    = 1
     HAVE_HEADER.execinfo_h = 1
     CFLAGS += -DHAVE_HEADER_SYS_TIME_H=1 -DHAVE_HEADER_FCNTL=1
MKC_CHECK_MEMBERS
List of <type>.<member>:<header> to check. <header> part is optional.

As a result of the check bmake's variable HAVE_MEMBER.<type>_<member>.<header> (or HAVE_MEMBER.<type>_<member>) is set to either 0 or 1 depending on the result.
<header>: tr|./|__|g
Also -DHAVE_MEMBER_<TYPE>_<MEMBER>_<HEADER>=1 (or -DHAVE_MEMBER_<TYPE>_<MEMBER>=1) is added to CPPFLAGS if the specified member was found in appropriate type unless MKC_NOAUTO is set to 1.
<HEADER>: tr|a-z./|A-Z__|g
<TYPE>: tr|a-z./|A-Z__|g
<MEMBER>: tr|a-z./|A-Z__|g

Ex:  MKC_CHECK_VARS += struct-ifreq.ifr_ifrn.ifrn_name:net/if.h
     MKC_CHECK_VARS += struct-tm.tm_isdst:time.h
Res: HAVE_MEMBER.struct_ifreq_ifr_ifrn_ifrn_name.net_if_h=1
     HAVE_MEMBER.struct_tm_tm_isdst.time_h=1
     CFLAGS += -DHAVE_MEMBER_STRUCT_IFREQ_IFR_IFRN_IFRN_NAME_NET_IF_H=1
     CFLAGS += -DHAVE_MEMBER_STRUCT_TM_TM_ISDST_TIME_H=1
MKC_CHECK_PROGS
List of <progname>s to check. As a result of the check bmake's variable HAVE_PROG.<progname> is set to either 1 (true) or 0 (false). Also PROG.<progname> is set to a full path of a program or to an empty string.

Ex:  MKC_CHECK_PROGS += lua ruby gawk runawk
Res: HAVE_PROG.lua             = 1
     PROG.lua                  = /usr/pkg/bin/lua
     HAVE_PROG.ruby            = 0
     HAVE_PROG.gawk            = 1
     PROG.gawk                 = /usr/bin/gawk
     HAVE_PROG.runawk          = 1
     PROG.runawk               = /usr/pkg/bin/runawk

If MKC_PROG.id.<progname> is set to, e.g, <prog_id>, then HAVE_PROG.<prog_id> and PROG.<prog_id> are set. MKC_PROG.id.<progname> also changes cache file names.

MKC_CHECK_PROTOTYPES
A list of checks (list of names) for C function prototypes. MKC_PROTOTYPE_FUNC.<name> is a C function prototype. MKC_PROTOTYPE_HEADERS.<name> is a list of headers separated by space or comma. mk-configure verifies that the specified prototype is correct and if so, HAVE_PROTOTYPE.<name> bmake variable is set to 1 and -DHAVE_PROTOTYPE_<NAME>=1 is added to CPPFLAGS unless MKC_NOAUTO is set to 1. Otherwise, HAVE_PROTOTYPE.<name> variable is set to 0.

Ex.
  MKC_CHECK_PROTOTYPES = posix_iconv const_iconv
  MKC_PROTOTYPE_FUNC.posix_iconv =  
    size_t iconv(iconv_t,char**,size_t*,char**,size_t*)
  MKC_PROTOTYPE_FUNC.const_iconv =  
    size_t iconv(iconv_t,const char**,size_t*,char**,size_t*)
  MKC_PROTOTYPE_HEADERS.posix_iconv = iconv.h
  MKC_PROTOTYPE_HEADERS.const_iconv = iconv.h
Res.
 HAVE_PROTOTYPE.posix_iconv=0
 HAVE_PROTOTYPE.const_iconv=1
 CFLAGS += -DHAVE_PROTOTYPE_CONST_ICONV=1
MKC_CHECK_SIZEOF
List of <type>:<header> to check. <header> part is optional.

As a result of the check bmake's variable SIZEOF.<type>.<header> (or SIZEOF.<type>) is set to the data type size or string "failed".
<type>: tr|*-|P_|g
<header>: tr|/.|__|g
Also -DSIZEOF_<TYPE>_<HEADER>=<failed|1|2|...> (or -DSIZEOF_<TYPE>=<failed|1|2|...>) is added to CPPFLAGS if sizeof() check was successful unless MKC_NOAUTO is set to 1
<TYPE>: tr|a-z*-|A-ZP_|g
<HEADER>: tr|a-z/.|A-Z__|g

Ex:  MKC_CHECK_SIZEOF += void*
     MKC_CHECK_SIZEOF += long-long off_t:sys/types.h
Res: SIZEOF.voidP             = 4
     SIZEOF.long_long         = 4
     SIZEOF.off_t.sys_types_h = 8
     CFLAGS += -DSIZEOF_VOIDP=4 \
               -DSIZEOF_LONG_LONG=4 \
               -DSIZEOF_OFF_T_SYS_TYPES_H=8
MKC_CHECK_TYPES
List of type:header to check. <header> part is optional.

As a result of the check bmake's variable HAVE_TYPE.<type>.<header> (or HAVE_TYPE.<type>) is set to either 0 or 1.
<header>: tr|./|__|g

Also -DHAVE_TYPE_<TYPE>_<HEADER>=1 (or -DHAVE_TYPE_<TYPE>=1) is added to CPPFLAGS if the specified type was detected unless MKC_NOAUTO is set to 1.
<HEADER>: tr|a-z./|A-Z__|g
<TYPE>: tr|a-z|A-Z|g

Ex:  MKC_CHECK_TYPES += size_t:string.h
Res: HAVE_TYPE.size_t.string_h = 1
     CFLAGS += -DHAVE_TYPE_SIZE_T_STRING_H=1
MKC_CHECK_VARS
List of variable:header to check. <header> part is optional.

As a result of the check bmake's variable HAVE_DEFINE.<variable>.<header> (or HAVE_DEFINE.<variable>) is set to either 0 or 1
<header>: tr|./|__|g
Also -DHAVE_DEFINE_<VARIABLE>_<HEADER>=1 (or -DHAVE_DEFINE_<VARIABLE>=1) is added to CPPFLAGS if the specified variable was detected unless MKC_NOAUTO is set to 1.
<HEADER>: tr|a-z./|A-Z__|g

Ex:  MKC_CHECK_VARS += sys_errlist:errno.h
Res: HAVE_VAR.sys_errlist.errno_h = 1
     CFLAGS += -DHAVE_VAR_SYS_ERRLIST_ERRNO_H
MKC_COMMON_DEFINES
List of defines always passed to compiler in MKC_CHECK_{DEFINES,VARS,FUNCS<N>,SIZEOF} checks.

Ex: MKC_COMMON_DEFINES += -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 # Linux
    MKC_COMMON_DEFINES += -D_ALL_SOURCE # Interix
MKC_COMMON_DEFINES.<OPSYS>
The same as MKC_COMMON_DEFINES but only for OPSYS (uname -s).

Ex: MKC_COMMON_DEFINES.Linux   += -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
    MKC_COMMON_DEFINES.Interix += -D_ALL_SOURCE
MKC_COMMON_HEADERS
List of header files always #include'd to the test .c file in MKC_CHECK_{DEFINES,VARS,FUNCS<N>,SIZEOF} checks. The default value is an empty list.

Ex: MKC_COMMON_HEADERS += unistd.h stdlib stdio.h string.h
    MKC_CHECK_SIZEOF   += offs_t size_t ssize_t
MKC_CUSTOM_DIR
Directory with custom checks source files. See MKC_CHECK_CUSTOM. It defaults to ${.CURDIR}.
MKC_DELETE_TMPFILES
If set to 1, temporary files are removed.
MKC_FEATURES
This is a list of "features" required by project. In general, a feature is something that has problems with portability. This may be a function name or header missing on some platforms, for example. What developer needs to do is to add FEATURENAME to MKC_FEATURES variable and add #include <mkc_FEATURENAME.h> where it is needed. Internally, system requiremets are checked in the automatically included mkc_imp.f_FEATURENAME.mk file and all required actions (includes, define checks etc.) are made in mkc_FEATURENAME.h header file. Currently the following features are provided:
arc4random
This feature provides arc4random(3), arc4random_buf(3) and arc4random_uniform(3) functions available in BSDs. If these functions are absent on your system, install libbsd library.
bswap
This feature provides bswap16(3), bswap32(3) and bswap64(3) functions available in *BSD.
dprintf
This feature provides dprintf(3).
efun
This feature provides esetfunc(3), efopen(3), ecalloc(3), emalloc(3), erealloc(3), ereallocarr(3), estrdup(3), estrndup(3), estrlcpy(3), estrlcat(3), easprintf(3), estrtoi(3), estrtou(3) and evasprintf(3) functions from NetBSD.
err
This feature provides err(3), errx(3), verr(3) and verrx(3) BSD-isms.
errc
This feature provides errc(3) and verrc(3) BSD-isms.
fgetln
This feature provides fgetln(3) BSD-ism.
fparseln
This feature provides fparseln(3) BSD-ism.
fts
This feature provides fts_open(3), fts_read(3) etc. functions available on BSDs and Linux. If it is absent on your system, you have to install libfts (both headers and library). libfts is a part of musl project.
getdelim
This feature provides getdelim(3) from POSIX.
getline
This feature corresponds to getline(3) function which is a part of POSIX2008 unavailable on some systems. mkc_imp.f_getline.mk checks whether getline declaration is available in stdio.h and implementation is available in libc. If not, getline.c provided by mk-configure is added to SRCS and declaration is provided in mkc_getline.h header.
humanize_number
This feature provides humanize_number(3) function from NetBSD.
libdl
This feature checks whether libdl library is available and dlopen(3) is declared in dlfcn.h. If yes, -ldl is added to LDADD. mkc_libdl.h provides declarations for dlopen(3), dlsym(3), dlclose(3) etc.
libl
Adds -ll or -lfl to LDADD depending on which one is available. One can use this feature instead of LIBLEX variable.
libm
This feature checks whether libm is available and if yes, adds -lm to LDADD. Most UNIX-like systems have libm but Haiku, for example, does not. mkc_imp.f_libm.mk checks whether libm library is available and if yes, -lm is added to LDADD.
macro
This feature provides the following macro stolen from NetBSD. __aligned(x) defined as __attribute__((aligned(x))) if supported by compiler, __always_inline defined as __attribute__((always_inline)) if supported by compiler, __arraycount(a) defined as (sizeof(__a)/sizeof(__a[0])) , __constfunc defined as __attribute__((const)) if supported by compiler, __dead defined as __attribute__((noreturn)) if supported by compiler, MIN(a,b) and MAX(a,b), __pure defined as __attribute__((pure)) if supported by compiler, __printflike(n,m) defined as __attribute__((format (printf, n, m))) if supported by compiler.
posix_getopt
It is well-known that glibc getopt(3) does not conform to POSIX by default. This feature provides POSIX-ly correct getopt.
progname
This feature provides getprogname(3) and setprogname(3) functions available in *BSD.
pwdgrp
This feature provides user_from_uid(3), uid_from_user(3), group_from_gid(3), gid_from_group(3) functions from *BSD.
raise_default_signal
This feature provides function raise_default_signal(3) from NetBSD.
RB SPLAY
BSD systems provide sys/tree.h header where RB_* and SPLAY_* macroses are defined for red-black tree and splay. These features check whether sys/tree.h and appropriate macroses are available. If yes, mkc_RB.h and mkc_SPLAY.h include system-wide sys/tree.h, otherwise NetBSD version of sys/tree.h provided by mk-configure is included.
reallocarr
This feature provides reallocarr(3) function from NetBSD.
reallocarray
This feature provides reallocarray(3) function from OpenBSD.
shquote
This feature provides shquote(3) function from NetBSD.
SLIST SIMPLEQ STAILQ LIST TAILQ CIRCLEQ
BSD systems provide sys/queue.h header where SLIST_* etc. macroses are defined for lists and queues. These features check whether sys/queue.h and appropriate macroses are available. If yes, mkc_SLIST.h and others include system-wide sys/queue.h, otherwise NetBSD version of sys/queue.h provided by mk-configure is included.
strlcat
This feature corresponds to strlcat(3) function available on almost all systems except glibc-based Linux-es. mkc_imp.f_strlcat.mk checks whether strlcat declaration is available in string.h and implementation is available in libc. If not, strlcat.c provided by mk-configure is added to SRCS and declaration is provided in mkc_strlcat.h header.
strlcpy
Similar to strlcat.
strndup
This feature provides strndup(3) from POSIX.
strsep
This features provides strsep(3) and stresep(3) functions.
strtoi
This feature provides strtoi(3) function introduced in NetBSD.
strtou
This feature provides strtoi(3) function introduced in NetBSD.
vis
This feature provides vis(3), nvis(3), svis(3), snvis(3), strvis(3), strnvis(3), strsvis(3), strsnvis(3), strvisx(3), strnvisx(3), strenvisx(3), strsvisx(3), strsnvisx(3), strsenvisx(3), strunvis(3), strnunvis(3), strunvisx(3), strnunvisx(3) and unvis(3) from NetBSD.
warn
This feature provides warn(3), warnx(3), vwarn(3) and vwarnx(3) BSD-isms.
MKC_NOAUTO
See MKC_CHECK_{HEADERS,FUNCLIBS,FUNCS,VARS,DEFINES,SIZEOF}.
MKC_NOAUTO_FUNCLIBS
See MKC_CHECK_FUNCLIBS
MKC_NOCACHE
All results are cached unless MKC_NOCACHE variable is set non-empty value
MKC_REQUIRE_BUILTINS
The same as MKC_CHECK_BUILTINS, but failure is treated as a fatal error (See configure target).
MKC_REQUIRE_CUSTOM
The same as MKC_CHECK_CUSTOM, but failure is treated as a fatal error (See configure target). 0 and empty value of CUSTOM.xxx means failure.
MKC_REQUIRE_DEFINES
The same as MKC_CHECK_DEFINES, but absense of the define is treated as a fatal error (See configure target).
MKC_REQUIRE_FUNCLIBS
The same as MKC_CHECK_FUNCLIBS, but absense of funclib is treated as a fatal error (See configure target).
MKC_REQUIRE_FUNCS<N>
The same as MKC_CHECK_FUNCS<N>, but absense of the function declaration is treated as a fatal error (See configure target).
MKC_REQUIRE_HEADER_FILES
The same as MKC_CHECK_HEADER_FILES, but absense of header is treated as a fatal error (See configure target).
MKC_REQUIRE_HEADERS
The same as MKC_CHECK_HEADERS, but absense of header is treated as a fatal error (See configure target).
MKC_REQUIRE_MEMBERS
The same as MKC_CHECK_MEMBERS, but absense of the member is treated as a fatal error (See configure target).
MKC_REQUIRE_PROGS
The same as MKC_CHECK_PROGS, but absense of program is treated as a fatal error (See configure target).
MKC_REQUIRE_PROTOTYPES
The same as MKC_CHECK_PROTOTYPES, but incorrect prototype is treated as a fatal error (See configure target).
MKC_REQUIRE_TYPES
The same as MKC_CHECK_TYPES, but absense of the type declaration is treated as a fatal error (See configure target).
MKC_REQUIRE_VARS
The same as MKC_CHECK_VARS, but absense of the variable declaration is treated as a fatal error (See configure target).
MKC_SHOW_CACHED
Setting it to 0 will hide

Checking ... (cached) ...

messages, that is, messages about fetching results from cache files.

MKC_SOURCE_DIR, MKC_SOURCE_DIR.<source>
Directory with sources for MKC_SOURCE_FUNCLIBS. If MKC_SOURCE_DIR.<source> is unset, MKC_SOURCE_DIR is used that defaults to ${.CURDIR}.

Ex:  MKC_SOURCE_FUNCLIBS += getline
     MKC_SOURCE_DIR.getline.c = ${.CURDIR}/../missing
Res: SRCS+= ${.CURDIR}/../missing/getline.c
     HAVE_FUNCLIB.getline= 0
MKC_SOURCE_FUNCLIBS
The same as MKC_CHECK_FUNCLIBS, but if <function> is absent both in the specified <library> and in libc, function.c is added to SRCS unless MKC_NOAUTO=1.

Ex:  MKC_SOURCE_FUNCLIBS+= getline
Res: SRCS+= getline.c
     HAVE_FUNCLIB.getline= 0

The same as mkc.configure.mk but mkc.init.mk is not included by mkc.conf.mk in the beginning, and CFLAGS, CPPFLAGS, LDADD and SRCS varibales are not modified. Instead, internal variables MKC_CFLAGS, MKC_CPPFLAGS, MKC_LDADD and MKC_SRCS contain all changes and will be applied later. One can use this module for implementing your own "features" similar to MKC_FEATURES.

It is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly! It provides installing and uninstalling the scripts. The following variables are provided:
SCRIPTS
A list of interpreter scripts (written in shell, awk, lua etc). These are installed like programs. <M>
SCRIPTSDIR
Target directory for scripts. <Iu> [${BINDIR}]
SCRIPTSDIR_<script>
Optional directory to install <script> to. If <script> has a form <subdir>/<filename>, SCRIPTSDIR_<subdir>_<filename> is used. <Mu>
SCRIPTSGRP
Script file group. <Iu> [${BINGRP}]
SCRIPTSMODE
Script file mode. <Iu> [${BINMODE}]
SCRIPTSNAME
The name that the above program will be installed as, if different from ${SCRIPTS}. <Mu>
SCRIPTSNAME_<script>
Optional name to install <script> as. If <script> has a form <subdir>/<filename>, SCRIPTSNAME_<subdir>_<filename> is used. <Mu>
SCRIPTSOWN
Script files owner. <Iu> [${BINOWN}]

mkc_imp.lua.mk is internal include file which is included from mkc.prog.mk and mkc.lib.mk. Do not use it directly. It provides support for Lua programming language, i.e. building and installing Lua- and/or C-based modules. The following variables are provided:
LUA_CMODDIR
Directory for compiled Lua modules written in, e.g., C or C++. It is assigned with the help of pkg-config --variable=INSTALL_CMOD lua command and can be overriden by user. <Iu>
LUA_CMODULE
Compiled Lua module written in, e.g., C or C++. Dot in the module name separates a dirname from basename. That is, actual .c file names are made of LUA_MODULES with dots replaced with undeline symbol. At installation time dots are replaced with slash. For example, if LUA_CMODULES=socket.foo, then socket_foo.c will be used for compiling a module and will be installed to ${LUA_CMODDIR}/socket/foo.so. <M>
LUA_LMODDIR
Directory for Lua modules written in Lua. It is assigned with the help of pkg-config --variable=INSTALL_LMOD lua command and can be overriden by user. <Iu>
LUA_LMODULES
Deprecated. Filenames of Lua modules. Use LUA_MODULES instead. <M>
LUA_MODULES
List of Lua modules to build and install. Dot in the module name separates a dirname from basename. That is, actual .lua file names are made of LUA_MODULES with dots replaced with undeline symbol. At installation time dots are replaced with slash. For example, if LUA_MODULES=socket.foo, then socket_foo.lua will be installed to ${LUA_LMODDIR}/socket/foo.lua <M>
SRCS
List of source files to build the LUA_CMODULE. SRCS defaults to ${LUA_CMODULE:S|.|_|g}.c. <M>

mkc_imp.intexts.mk is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly. It provides conversion of <fn>.in files to <fn> by expanding the following @@ patterns:

 Pattern       Result
----------------------
@prefix@       ${PREFIX}
@bindir@       ${BINDIR}
@mandir@       ${MANDIR}
@sbindir@      ${SBINDIR}
@libdir@       ${LIBDIR}
@libexecdir@   ${LIBEXECDIR}
@datadir@      ${DATADIR}
@sysconfdir@   ${SYSCONFDIR}
@incsdir@      ${INCSDIR}
@vardir@       ${VARDIR}
@sharedstate@  ${SHAREDSTATEDIR}

The following variables are provided:

INFILES
List of files to generate. <M>
INSCRIPTS
List of scripts to generate. <M>
INTEXTS_REPLS
List of Pattern/Replacement pairs separated by space, e.g.

INTEXTS_REPLS+=   version ${VERSION}
INTEXTS_REPLS+=   author_email ${AUTHOR_EMAIL}

<M>

INTEXTS_SED
List of additional sed(1) expressions for expanding, e.g.

INTEXTS_SED+=   -e 's,0.37.0,${VERSION},g'

<M>

mkc_imp.info.mk is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly! This module provides creation of .info files from .txi, .texi and .texinfo sources and provides the following variables:
INFOFLAGS
Flags to pass to makeinfo. [] <Iu>
MKINFO
If "no", don't build or install Info documentation from Texinfo source files. <Iu> [yes]
TEXINFO
List of Texinfo source files. Info documentation will consist of single files with the extension replaced by .info. <M>

mkc_imp.man.mk is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly! This module provides installation of manual pages and creation of catpages and HTML pages and provides the following variables:
HTMLDIR
Target directory for html pages generated from man pages. <Iu> [${MANDIR}]
MAN
Manual pages (usually end in .1 - .9). <M>
MANDIR
Target directory for man pages. <Iu> [${PREFIX}/man]
MANZ
If not "no", compress manual pages at installation time. <Iu> [no]
MKCATPAGES
If "no", don't build or install the catman pages. <Iu> [no]
MKHTML
If "no", don't build or install the HTML man pages. <Iu> [no]
MKMAN
If "no", don't build or install the man pages, and also acts as "MKCATPAGES=no MKHTML=no". <Iu> [yes]
MLINKS
List of manual page links (using a .1 - .9 suffix). The linked-to file must come first, the linked file second, and there may be multiple pairs. The files are hard-linked. <M>
USETBL
If not "no", preprocess man pages using tbl(1) while generating cat pages. <IM> [no]

mkc_imp.links.mk is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly! This module provides creation of hard and symbolic links and provides the following variables:
LINKS
The list of binary links; should be full pathnames, the linked-to file coming first, followed by the linked file. The files are hard-linked. For example, to link ${BINDIR}/gzip and ${BINDIR}/gunzip, use:

LINKS=   ${BINDIR}/gzip ${BINDIR}/gunzip

<M>

SYMLINKS
The list of symbolic links; should be full pathnames. Syntax is identical to LINKS. Note that DESTDIR is not automatically included in the link. <M>

mkc_imp.inc.mk is internal include file which is included from mkc.prog.mk, mkc.lib.mk and mkc.files.mk. Do not use it directly! This module provides installation of header files and provides the following variables:
INCS
The list of include files. <M>
INCSDIR
See mkc.init.mk.
INCSNAME
Target name of the include file, if only one; same as FILESNAME, but for include files. <M>
INCSNAME_<file>
The name file <file> should be installed as, if not <file>, same as FILESNAME_<file>, but for include files. <Mu>
INCSSRCDIR
Source directory for include files. This variable have an influence on CPPFLAGS (-I${INCSSRCDIR} is added) and on an installation of include files (paths in ${INCS} are relative to ${INCSSRCDIR}). <M> [.]

mkc.minitest.mk is an auxiliary include file that implement simple framework for unit tests. Idea: application provides the target test_output and expect.out file that contains ideal output. mkcmake test runs mkcmake test_output and compare generated output with expect.out.
MKC_DIFF
diff(1) command for comparing expected and actual results. <Iu> [diff]
TEST_PREREQS
Prerequisites for target "test". <Iu> [all]

mkc_imp.pkg-config.mk is internal include file which is included from mkc.prog.mk and mkc.lib.mk. Do not use it directly! This module supports dependencies controlled by pkg-config program. As a result CPPFLAGS and LDADD variables are modified according to "pkg-config --cflags ..." and "pkg-config --libs ...". The following variables are provided:
MKC_CHECK_PKGCONFIG
List of libraries to check, for example, glib-2.0>=2.1. Spaces around <=, >=, =, < and > are not allowed. As a result of the check bmake's variable PKG_CONFIG.exists.<lib> is set to 1 for success or 0 for failure. Unless MKC_NOAUTO is set to 1 -DHAVE_PKGCONFIG_<LIB>=1 is also added to CPPFLAGS if <lib> was found. <LIB> is tr/a-z+.-/A-ZP__/ of <lib>. <M>
MKC_REQUIRE_PKGCONFIG
The same as MKC_REQUIRE_PKGCONFIG, but absense of library is treated as a fatal error (See configure target).
PCNAME.<lib>
On some systems several versions of the same library may be installed to differet directories (for example liblua for Lua 5.1 and 5.2). In order to avoid conflicts between them pc name is changed (for example, lua5.1 and lua5.2 instead of lua). This variable is a map from library name to pc name. <Iu> [${lib}]
PKG_CONFIG.exists.<lib>
If "1", <lib> exists, "0" otherwise. Inside <lib> <=, >=, =, < and > and replaced with _le_, _ge_, _eq_, _lt_ and _gt_ respectively. <Iu>
PKG_CONFIG.var.<lib>.<var>
Variable value (pkg-config --variable=<var> <lib>). <Iu>
PKG_CONFIG_VARS.<lib>
List of variables to check for library <lib>. <M>

mkc_imp.pod.mk is internal include file which is included from mkc.prog.mk and mkc.lib.mk. Do not use it directly! It provides support for POD (Plain Old Documentation) markup language, i.e. convertion of POD documents to MAN pages (suffix rules: .pod.1, ... , .pod.9) and HTMLs (.pod.html). The following variables are provided:
POD2HTML
Path to POD to HTML conversion utility <Iu> [pod2html].
POD2HTML_FLAGS
Flags passed to ${POD2HTML} <Iu> [].
POD2MAN
Path to POD to MAN conversion utility <Iu> [pod2man].
POD2MAN_FLAGS
Flags passed to ${POD2MAN} <Iu> [-r '' -n '${.TARGET:T:R}' -c ''].

mkc_imp.dep.mk is internal include file which is included from mkc.prog.mk and mkc.lib.mk. Do not use it directly! This include file contains the default targets for building .depend_${.CURDIR:T} files. It creates .d files from entries in SRCS and DPSRCS that are C, C++, or Objective C source files, and builds .depend_${PROJECTNAME} from the .d files. All other files in SRCS and all of DPSRCS will be used as dependencies for the .d files. The following variables are provided:
DPSRCS
List of source files which are needed for generating dependencies, but are not needed in ${SRCS}.
MKDEP_CC
Compiler passed to mkdep(1). <Iu> [${CC}].
SRCS
The same as in mkc.prog.mk and mkc.lib.mk.

This module is activated if variable FOREIGN is set to "autotools" and provides support for building external projects using autotools. It also provides a recursive target mkgen for generating "configure" script, "Makefile.in" file etc. using autoreconf(1) utility. The following variables are provided:
AT_AUTORECONF_ARGS
Arguments passed to autoreconf(1). <U> [-sif].
AT_CONFIGURE_ARGS
Extra arguments passed to "configure" script set in addition to standard ones (--prefix, --bindir etc.). <Mu> [].
AT_CONFIGURE_ENV
Environment variables for "configure" script set in addition to standard ones (CC, CFLAGS etc.). <Mu> [].
AT_MAKE
Make(1)-like utility for the project. <Imu> [${MAKE}].
AT_USE_AUTOMAKE
If "yes", automake(1) is used. <M> [yes].
FSRCDIR
Relative (to ${.CURDIR}) or absolute directory to autotools-based sources.

This mk file implements targets help, help_subprj and help_use.
help_use
Outputs the configuring options available for the project and descriptions for their values. Configuring options should be specified in USE_VARIABLES variable described below.
help_subprj
Outputs the list of subprojects (mkc.subprj.mk) and their descriptions. Subprojects are mentioned in SUBPRJ and SUBPRJ_DFLT variables. Description are specified in HELP_MSG.<subproject> variable.
USE_VARIABLES
A list of configuring variables. Let's assume that the only configuring variable is USESOMETHING and the valid values for it are: no (the default) and yes. Then developer may provide the following assignments in Makefile:

USE_VARIABLES  += USESOMETHING
USESOMETHING.descr  = "Configuring parameter SOMETHING"
USESOMETHING.0  = "no: disable feature SOMETHING"
USESOMETHING.1  = "yes: enable feature SOMETHING"

<M> [unset]

HELP_MSG.<subproject>
Description for project <subproject>. <M> [unset]

The following variables are used for compiling software using cross-tools.
MACHINE_GNU_PLATFORM
See TOOLCHAIN_PREFIX.
OPSYS_TARGET
OPSYS for target OS.
SYSROOT
Root directory for headers and libraries. If set, the following variables are set to ${TOOLCHAIN_DIR}/${TOOLCHAIN_PREFIX}<toolname>: AR, AS, CXX, CPP, CC, INSTALL, LD, NM, OBJCOPY, OBJDUMP, RANLIB, SIZE and STRIP. <U> [].
TOOLDIR
See TOOLCHAIN_DIR.
TOOLCHAIN_DIR
Directory that contains cross-toolchain. <U> [${TOOLDIR}/bin].
TOOLCHAIN_PREFIX
See SYSROOT. <U> [${MACHINE_GNU_PLATFORM}-].

MAKECONF
Path to mk.conf file included by mkc.*.mk files

/etc/mkcmake.conf
included by mkc.init.mk if exists
/etc/mk.conf
included by mkc.init.mk if exists

Target configure (configure) doesn't support parallel builds. In order to build project in parallel, run it like the following

mkcmake configure
mkcmake -j4 all

mkc_check_header(1), mkc_check_prog(1), mkc_check_decl(1), mkc_check_funclib(1), mkc_check_sizeof(1), mkc_check_custom(1), bmake(1), mkdep(1),

Aleksey Cheusov <vle@gmx.net>
January 21, 2021