Remove libc

.github/workflows/main.yml

@@ -122,7 +122,7 @@ jobs:
       - name: autogen
         run: ./autogen.sh
       - name: configure
-        run: ./configure --host='i386-elf' ${{matrix.assert}} --enable-freestanding --with-libc CC="$(which i686-linux-gnu-gcc)"
+        run: ./configure --host='i386-elf' ${{matrix.assert}} --enable-freestanding CC="$(which i686-linux-gnu-gcc)"
       - name: make
         run: make
 

.gitignore

@@ -45,8 +45,6 @@
 /examples/Makefile.in
 /fixtures/Makefile.in
 /include/Makefile.in
-/libc/Makefile.in
-/libc/include/Makefile.in
 /tests/Makefile.in
 
 ###########################################
@@ -78,8 +76,6 @@
 /examples/Makefile
 /fixtures/Makefile
 /include/Makefile
-/libc/Makefile
-/libc/include/Makefile
 /tests/Makefile
 
 /libkernaux.pc

CONTRIBUTING.md

@@ -4,8 +4,8 @@ Common
 * Add your name to [COPYING](/COPYING).
 * Don't add your name to `AUTHORS` - it's for maintainers.
 * Add copyright notice in the beginning of changed files except the headers.
-* If you change the behavior (even just fix a bug) of **libkernaux** (stable) or
-  [libc](/libc), add a record to [ChangeLog](/ChangeLog).
+* If you change the behavior (even just fix a bug), add a record
+  to [ChangeLog](/ChangeLog).
 
 Prohibitions:
 

ChangeLog

@@ -1,3 +1,7 @@
+2022-12-27  Alex Kotov  <kotovalexarian@gmail.com>
+
+	* configure.ac: Package "--with[out]-libc" has been removed
+
 2022-12-23  Alex Kotov  <kotovalexarian@gmail.com>
 
 	libkernaux 0.7.0 released

Makefile.am

@@ -6,11 +6,6 @@ EXTRA_DIST = autogen.sh CONTRIBUTING.md sha256sums.txt src/assert.h
 
 SUBDIRS = include
 
-if WITH_LIBC
-# FIXME: after "make clean" libc is not rebuiling
-SUBDIRS += libc
-endif
-
 SUBDIRS += .
 
 if ENABLE_FIXTURES
@@ -21,9 +16,6 @@ if ENABLE_CHECKS
 SUBDIRS += examples tests
 endif
 
-libc/libc.la:
-	$(MAKE) $(AM_MAKEFLAGS) -C $(top_builddir)/libc libc.la
-
 AM_CFLAGS += -DKERNAUX_ACCESS_PRIVATE
 
 lib_LTLIBRARIES = libkernaux.la
@@ -45,14 +37,6 @@ libkernaux_la_SOURCES = \
 	src/generic/mutex.c \
 	src/runtime.c
 
-########
-# libc #
-########
-
-if WITH_LIBC
-libkernaux_la_LIBADD += libc/libc.la
-endif
-
 #######
 # ARCH #
 #######

README.md

@@ -81,14 +81,6 @@ zero). Work-in-progress APIs can change at any time.
     * [Example: vfprintf](/examples/printf_file_va.c)
     * [Example: snprintf](/examples/printf_str.c)
     * [Example: vsnprintf](/examples/printf_str_va.c)
-* libc replacement (*work in progress*)
-  * [ctype.h](/libc/include/ctype.h)
-  * [errno.h](/libc/include/errno.h)
-  * [inttypes.h](/libc/include/inttypes.h)
-  * [setjmp.h](/libc/include/setjmp.h)
-  * [stdlib.h](/libc/include/stdlib.h)
-  * [string.h](/libc/include/string.h)
-  * [sys/types.h](/libc/include/sys/types.h)
 * Architecture-specific code (*work in progress*)
   * [Declarations](/include/kernaux/arch/)
   * [Functions](/include/kernaux/asm/)
@@ -143,11 +135,6 @@ stable options.
 * `--enable-pkg-config[=PATH]` - install pkg-config files
   [PATH='${libdir}/pkgconfig']
 
-#### Packages
-
-* `--with-libc` - provides the replacement for some standard C functions.
-  Useful in freestanding environment, where no libc is present.
-
 ### Default options
 
 #### Features
@@ -211,6 +198,9 @@ You can test with `make check`.
 
 Create configuration script with `./autogen.sh` (if present).
 
+The library requires some functions from the standard C library.
+Use [libclayer](https://github.com/tailix/libclayer).
+
 Let's assume that your target triplet is `i386-elf`. Configure with
 [cross-compiler](https://wiki.osdev.org/GCC_Cross-Compiler) in `$PATH` to make
 without it in `$PATH`:
@@ -220,8 +210,8 @@ without it in `$PATH`:
   --host='i386-elf' \
   --disable-shared \
   --enable-freestanding \
-  --with-libc \
-  CC="$(which i386-elf-gcc)"
+  CC="$(which i386-elf-gcc)" \
+  CFLAGS='-I<path/to/libc/headers>'
 ```
 
 The variables include `AR`, `AS`, `CC`, `CCAS`, `LD`, `NM`, `OBJDUMP`, `RANLIB`,

configure.ac

@@ -30,8 +30,6 @@ AC_CONFIG_FILES([
   fixtures/Makefile
   fixtures/multiboot2_bin_examples_gen.c
   include/Makefile
-  libc/Makefile
-  libc/include/Makefile
   include/kernaux/version.h
   tests/Makefile
   tests/test_multiboot2_header_print.c
@@ -62,7 +60,6 @@ AC_ARG_ENABLE([checks-all],      AS_HELP_STRING([--enable-checks-all],      [ena
 AC_ARG_ENABLE([checks-cppcheck], AS_HELP_STRING([--enable-checks-cppcheck], [enable cppcheck]))
 AC_ARG_ENABLE([checks-pthreads], AS_HELP_STRING([--enable-checks-pthreads], [enable tests that require pthreads]))
 AC_ARG_ENABLE([checks-python],   AS_HELP_STRING([--enable-checks-python],   [enable tests that require Python 3 with YAML and Jinja2]))
-AC_ARG_ENABLE([split-libc],      AS_HELP_STRING([--enable-split-libc],      [split off libc]))
 
 dnl Features (with parameter)
 AC_ARG_ENABLE([pkg-config],      AS_HELP_STRING([--enable-pkg-config@<:@=PATH@:>@], [install pkg-config files @<:@PATH='${libdir}/pkgconfig'@:>@]))
@@ -86,9 +83,6 @@ AC_ARG_WITH(  [printf],          AS_HELP_STRING([--without-printf],         [wit
 AC_ARG_WITH(  [printf-fmt],      AS_HELP_STRING([--without-printf-fmt],     [without printf format parser]))
 AC_ARG_WITH(  [units],           AS_HELP_STRING([--without-units],          [without measurement units utils]))
 
-dnl Packages (disabled by default)
-AC_ARG_WITH(  [libc],            AS_HELP_STRING([--with-libc],              [with libc replacement]))
-
 
 
 ################
@@ -151,7 +145,6 @@ AS_IF([test "$enable_checks_all"      = yes], [enable_checks_all=yes],      [ena
 AS_IF([test "$enable_checks_cppcheck" = yes], [enable_checks_cppcheck=yes], [enable_checks_cppcheck=no])
 AS_IF([test "$enable_checks_pthreads" = yes], [enable_checks_pthreads=yes], [enable_checks_pthreads=no])
 AS_IF([test "$enable_checks_python"   = yes], [enable_checks_python=yes],   [enable_checks_python=no])
-AS_IF([test "$enable_split_libc"      = yes], [enable_split_libc=yes],      [enable_split_libc=no])
 
 dnl Features (with parameter)
 AS_IF([test "$enable_pkg_config"      = yes], [enable_pkg_config='${libdir}/pkgconfig'])
@@ -176,9 +169,6 @@ AS_IF([test "$with_printf"            = no ], [with_printf=no],             [wit
 AS_IF([test "$with_printf_fmt"        = no ], [with_printf_fmt=no],         [with_printf_fmt=yes])
 AS_IF([test "$with_units"             = no ], [with_units=no],              [with_units=yes])
 
-dnl Packages (disabled by default)
-AS_IF([test "$with_libc"              = yes], [with_libc=yes],              [with_libc=no])
-
 
 
 #############
@@ -187,8 +177,6 @@ AS_IF([test "$with_libc"              = yes], [with_libc=yes],              [wit
 
 AS_IF([test "$enable_checks"   = yes -a "$enable_freestanding" = yes], AC_MSG_ERROR([can not build freestanding tests]))
 AS_IF([test "$enable_fixtures" = yes -a "$enable_freestanding" = yes], AC_MSG_ERROR([can not build freestanding fixtures]))
-AS_IF([test "$enable_checks"   = yes -a "$with_libc"           = yes], AC_MSG_ERROR([can not use package `libc' with tests]))
-AS_IF([test "$enable_fixtures" = yes -a "$with_libc"           = yes], AC_MSG_ERROR([can not use package `libc' with fixtures]))
 
 AS_IF([test "$with_printf" = yes -a "$with_ntoa"       = no], AC_MSG_ERROR([package `printf' requires package `ntoa']))
 AS_IF([test "$with_printf" = yes -a "$with_printf_fmt" = no], AC_MSG_ERROR([package `printf' requires package `printf-fmt']))
@@ -220,7 +208,6 @@ AM_CONDITIONAL([ENABLE_CHECKS],          [test "$enable_checks"          = yes])
 AM_CONDITIONAL([ENABLE_CHECKS_CPPCHECK], [test "$enable_checks_cppcheck" = yes])
 AM_CONDITIONAL([ENABLE_CHECKS_PTHREADS], [test "$enable_checks_pthreads" = yes])
 AM_CONDITIONAL([ENABLE_CHECKS_PYTHON],   [test "$enable_checks_python"   = yes])
-AM_CONDITIONAL([ENABLE_SPLIT_LIBC],      [test "$enable_split_libc"      = yes])
 
 dnl Features (with parameter)
 AM_CONDITIONAL([ENABLE_PKG_CONFIG],      [test ! -z "$enable_pkg_config"])
@@ -242,9 +229,6 @@ AM_CONDITIONAL([WITH_PRINTF],            [test "$with_printf"            = yes])
 AM_CONDITIONAL([WITH_PRINTF_FMT],        [test "$with_printf_fmt"        = yes])
 AM_CONDITIONAL([WITH_UNITS],             [test "$with_units"             = yes])
 
-dnl Packages (disabled by default)
-AM_CONDITIONAL([WITH_LIBC],              [test "$with_libc"              = yes])
-
 dnl Packages (virtual)
 AM_CONDITIONAL([WITH_ARCH_X86],          [test "$with_arch_i386" = yes -o "$with_arch_x86_64" = yes])
 
@@ -275,7 +259,6 @@ AS_IF([test "$enable_checks"          = yes], [AC_DEFINE([ENABLE_CHECKS],
 AS_IF([test "$enable_checks_cppcheck" = yes], [AC_DEFINE([ENABLE_CHECKS_CPPCHECK], [1], [enabled cppcheck])])
 AS_IF([test "$enable_checks_pthreads" = yes], [AC_DEFINE([ENABLE_CHECKS_PTHREADS], [1], [enabled tests that require pthreads])])
 AS_IF([test "$enable_checks_python"   = yes], [AC_DEFINE([ENABLE_CHECKS_PYTHON],   [1], [enabled tests that require Python 3 with YAML and Jinja2])])
-AS_IF([test "$enable_split_libc"      = yes], [AC_DEFINE([ENABLE_SPLIT_LIBC],      [1], [split off libc])])
 
 dnl Packages (enabled by default)
 AS_IF([test "$with_arch_i386"         = yes], [AC_DEFINE([WITH_ARCH_I386],         [1], [with architecture i386])])
@@ -294,9 +277,6 @@ AS_IF([test "$with_printf"            = yes], [AC_DEFINE([WITH_PRINTF],
 AS_IF([test "$with_printf_fmt"        = yes], [AC_DEFINE([WITH_PRINTF_FMT],        [1], [with printf format parser])])
 AS_IF([test "$with_units",            = yes], [AC_DEFINE([WITH_UNITS],             [1], [with measurement units utils])])
 
-dnl Packages (disabled by default)
-AS_IF([test "$with_libc"              = yes], [AC_DEFINE([WITH_LIBC],              [1], [with libc replacement])])
-
 dnl Packages (virtual)
 AS_IF([test "$with_arch_i386"         = yes], [AC_DEFINE([WITH_ARCH_X86],          [1], [with architecture x86])])
 AS_IF([test "$with_arch_x86_64"       = yes], [AC_DEFINE([WITH_ARCH_X86],          [1], [with architecture x86])])