Separate libc and libclayer

.github/workflows/main.yml

@@ -83,26 +83,6 @@ jobs:
       - name: install
         run: sudo make install
 
-  cond:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        packages:
-          - without: 'all'
-          - without: 'io'
-    steps:
-      - uses: actions/checkout@v2
-      - name: autogen
-        run: ./autogen.sh
-      - name: configure
-        run: ./configure --enable-checks --without-${{matrix.packages.without}}
-      - name: make
-        run: make
-      - name: check
-        run: make check
-      - name: install
-        run: sudo make install
-
   freestanding:
     runs-on: ubuntu-latest
     steps:

Makefile.am

@@ -10,7 +10,18 @@ if ENABLE_CHECKS
 SUBDIRS += tests
 endif
 
-lib_LTLIBRARIES = libclayer.la
+lib_LTLIBRARIES =
+
+if ENABLE_LIBCLAYER
+lib_LTLIBRARIES += libclayer.la
+libclayer_la_SOURCES = $(common_sources)
+endif
+
+if ENABLE_LIBC
+lib_LTLIBRARIES += libc.la
+libc_la_SOURCES = $(common_sources)
+libc_la_CFLAGS = $(AM_CFLAGS) -DLIBCLAYER_NOPREFIX
+endif
 
 if ENABLE_PKG_CONFIG
 pkgconfigdir = @pkgconfdir@
@@ -21,7 +32,7 @@ endif
 # Required files #
 ##################
 
-libclayer_la_SOURCES = \
+common_sources = \
 	src/ctype.c \
 	src/errno.c \
 	src/libclayer.c \
@@ -29,13 +40,13 @@ libclayer_la_SOURCES = \
 	src/string.c
 
 if ASM_I386
-libclayer_la_SOURCES += \
+common_sources += \
 	src/asm/i386/longjmp.S \
 	src/asm/i386/setjmp.S
 endif
 
 if ASM_X86_64
-libclayer_la_SOURCES += \
+common_sources += \
 	src/asm/x86_64/longjmp.S \
 	src/asm/x86_64/setjmp.S
 endif

configure.ac

@@ -42,7 +42,7 @@ AC_SUBST([PACKAGE_DESCR], ['libc for both hosted and freestanding environments']
 
 dnl Features (enabled by default)
 AC_ARG_ENABLE([float],           AS_HELP_STRING([--disable-float],          [disable floating-point arithmetic]))
-AC_ARG_ENABLE([prefix],          AS_HELP_STRING([--disable-prefix],         [disable name prefix]))
+AC_ARG_ENABLE([libclayer],       AS_HELP_STRING([--disable-libclayer],      [install as libclayer]))
 AC_ARG_ENABLE([werror],          AS_HELP_STRING([--disable-werror],         [disable -Werror]))
  
 dnl Features (disabled by default)
@@ -50,6 +50,7 @@ AC_ARG_ENABLE([freestanding],    AS_HELP_STRING([--enable-freestanding],    [bui
 AC_ARG_ENABLE([checks],          AS_HELP_STRING([--enable-checks],          [enable usual tests]))
 AC_ARG_ENABLE([checks-all],      AS_HELP_STRING([--enable-checks-all],      [enable all checks]))
 AC_ARG_ENABLE([checks-cppcheck], AS_HELP_STRING([--enable-checks-cppcheck], [enable cppcheck]))
+AC_ARG_ENABLE([libc],            AS_HELP_STRING([--enable-libc],            [install as libc]))
 
 dnl Features (with parameter)
 AC_ARG_ENABLE([pkg-config],      AS_HELP_STRING([--enable-pkg-config@<:@=PATH@:>@], [install pkg-config files @<:@PATH='${libdir}/pkgconfig'@:>@]))
@@ -75,7 +76,7 @@ AS_IF([test "$enable_checks_all" = yes], do_enable_checks_all)
 
 dnl Features (enabled by default)
 AS_IF([test "$enable_float"           = no ], [enable_float=no],            [enable_float=yes])
-AS_IF([test "$enable_prefix"          = no ], [enable_prefix=no],           [enable_prefix=yes])
+AS_IF([test "$enable_libclayer"       = no ], [enable_libclayer=no],        [enable_libclayer=yes])
 AS_IF([test "$enable_werror"          = no ], [enable_werror=no],           [enable_werror=yes])
 
 dnl Features (disabled by default)
@@ -83,6 +84,7 @@ AS_IF([test "$enable_freestanding"    = yes], [enable_freestanding=yes],    [ena
 AS_IF([test "$enable_checks"          = yes], [enable_checks=yes],          [enable_checks=no])
 AS_IF([test "$enable_checks_all"      = yes], [enable_checks_all=yes],      [enable_checks_all=no])
 AS_IF([test "$enable_checks_cppcheck" = yes], [enable_checks_cppcheck=yes], [enable_checks_cppcheck=no])
+AS_IF([test "$enable_libc"            = yes], [enable_libc=yes],            [enable_libc=no])
 
 dnl Features (with parameter)
 AS_IF([test "$enable_pkg_config"      = yes], [enable_pkg_config='${libdir}/pkgconfig'])
@@ -95,7 +97,6 @@ AS_IF([test "$enable_pkg_config"      = no ], [enable_pkg_config=''])
 #############
 
 AS_IF([test "$enable_checks" = yes -a "$enable_freestanding" = yes], AC_MSG_ERROR([can not build freestanding tests]))
-AS_IF([test "$enable_checks" = yes -a "$enable_prefix"       = no ], AC_MSG_ERROR([can not build tests without prefix]))
 
 
 
@@ -113,13 +114,14 @@ AM_CONDITIONAL([ASM_X86],                [test "$host_cpu" = i386 -o "$host_cpu"
 
 dnl Features (enabled by default)
 AM_CONDITIONAL([ENABLE_FLOAT],           [test "$enable_float"           = yes])
-AM_CONDITIONAL([ENABLE_PREFIX],          [test "$enable_prefix"          = yes])
+AM_CONDITIONAL([ENABLE_LIBCLAYER],       [test "$enable_libclayer"       = yes])
 AM_CONDITIONAL([ENABLE_WERROR],          [test "$enable_werror"          = yes])
 
 dnl Features (disabled by default)
 AM_CONDITIONAL([ENABLE_FREESTANDING],    [test "$enable_freestanding"    = yes])
 AM_CONDITIONAL([ENABLE_CHECKS],          [test "$enable_checks"          = yes])
 AM_CONDITIONAL([ENABLE_CHECKS_CPPCHECK], [test "$enable_checks_cppcheck" = yes])
+AM_CONDITIONAL([ENABLE_LIBC],            [test "$enable_libc"            = yes])
 
 dnl Features (with parameter)
 AM_CONDITIONAL([ENABLE_PKG_CONFIG],      [test ! -z "$enable_pkg_config"])
@@ -141,16 +143,14 @@ AS_IF([test "$host_cpu" = x86_64],            [AC_DEFINE([ASM_X86],
 
 dnl Features (enabled by default)
 AS_IF([test "$enable_float"           = yes], [AC_DEFINE([ENABLE_FLOAT],           [1], [enabled floating-point arithmetic])])
-AS_IF([test "$enable_prefix"          = yes], [AC_DEFINE([ENABLE_PREFIX],          [1], [enabled prefix])])
+AS_IF([test "$enable_libclayer"       = yes], [AC_DEFINE([ENABLE_LIBCLAYER],       [1], [install as libclayer])])
 AS_IF([test "$enable_werror"          = yes], [AC_DEFINE([ENABLE_WERROR],          [1], [enabled -Werror])])
 
 dnl Features (disabled by default)
 AS_IF([test "$enable_freestanding"    = yes], [AC_DEFINE([ENABLE_FREESTANDING],    [1], [build for freestanding environment])])
 AS_IF([test "$enable_checks"          = yes], [AC_DEFINE([ENABLE_CHECKS],          [1], [enabled usual tests])])
 AS_IF([test "$enable_checks_cppcheck" = yes], [AC_DEFINE([ENABLE_CHECKS_CPPCHECK], [1], [enabled cppcheck])])
-
+AS_IF([test "$enable_libc"            = yes], [AC_DEFINE([ENABLE_LIBC],            [1], [install as libc])])
-dnl Additional
-AS_IF([test "$enable_prefix"          = yes], [AC_DEFINE([LIBCLAYER_PREFIX], [libclayer_], [prefix])])
 
 
 

include/Makefile.am

@@ -1,9 +1,20 @@
 nobase_include_HEADERS = \
-	ctype.h \
+	libclayer.h          \
-	errno.h \
+	libclayer/ctype.h    \
+	libclayer/errno.h    \
+	libclayer/inttypes.h \
+	libclayer/setjmp.h   \
+	libclayer/stdlib.h   \
+	libclayer/string.h   \
+	libclayer/sys/types.h
+
+if ENABLE_LIBC
+nobase_include_HEADERS += \
+	ctype.h    \
+	errno.h    \
 	inttypes.h \
-	libclayer.h \
+	setjmp.h   \
-	setjmp.h \
+	stdlib.h   \
-	stdlib.h \
+	string.h   \
-	string.h \
 	sys/types.h
+endif

include/ctype.h

@@ -1,22 +1,7 @@
-#ifndef _CTYPE_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _CTYPE_H 1
+#include <libclayer/ctype.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/ctype.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#include <libclayer.h>
-
-int LIBCLAYER(isdigit)(int c);
-int LIBCLAYER(islower)(int c);
-int LIBCLAYER(isspace)(int c);
-int LIBCLAYER(isupper)(int c);
-
-int LIBCLAYER(tolower)(int c);
-int LIBCLAYER(toupper)(int c);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/errno.h

@@ -1,18 +1,7 @@
-#ifndef _ERRNO_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _ERRNO_H 1
+#include <libclayer/errno.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/errno.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#include <libclayer.h>
-
-#define ERANGE 1
-
-extern int LIBCLAYER(errno);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/inttypes.h

@@ -1,12 +1,7 @@
-#ifndef _INTTYPES_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _INTTYPES_H 1
+#include <libclayer/inttypes.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/inttypes.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/libclayer.h

@@ -7,12 +7,10 @@ extern "C" {
 
 #include <stddef.h>
 
-#ifndef LIBCLAYER_PREFIX
+#ifdef LIBCLAYER_NOPREFIX
 #define LIBCLAYER(name) name
 #else
-#define LIBCLAYER(name) LIBCLAYER2(LIBCLAYER_PREFIX, name)
+#define LIBCLAYER(name) libclayer_ ## name
-#define LIBCLAYER2(prefix, name) LIBCLAYER3(prefix, name)
-#define LIBCLAYER3(prefix, name) prefix ## name
 #endif
 
 struct Libclayer {

include/libclayer/ctype.h

@@ -0,0 +1,22 @@
+#ifndef _LIBCLAYER_CTYPE_H
+#define _LIBCLAYER_CTYPE_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libclayer.h>
+
+int LIBCLAYER(isdigit)(int c);
+int LIBCLAYER(islower)(int c);
+int LIBCLAYER(isspace)(int c);
+int LIBCLAYER(isupper)(int c);
+
+int LIBCLAYER(tolower)(int c);
+int LIBCLAYER(toupper)(int c);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/errno.h

@@ -0,0 +1,18 @@
+#ifndef _LIBCLAYER_ERRNO_H
+#define _LIBCLAYER_ERRNO_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libclayer.h>
+
+#define ERANGE 1
+
+extern int LIBCLAYER(errno);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/inttypes.h

@@ -0,0 +1,12 @@
+#ifndef _LIBCLAYER_INTTYPES_H
+#define _LIBCLAYER_INTTYPES_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/setjmp.h

@@ -0,0 +1,26 @@
+#ifndef _LIBCLAYER_SETJMP_H
+#define _LIBCLAYER_SETJMP_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libclayer.h>
+
+// TODO: define in architecture-specific header
+typedef unsigned long __jmp_buf[sizeof(long) == 8 ? 8 : 6];
+
+typedef struct __jmp_buf_tag {
+    __jmp_buf __jb;
+    unsigned long __fl;
+    unsigned long __ss[128 / sizeof(long)];
+} jmp_buf[1];
+
+int  LIBCLAYER(setjmp)(jmp_buf env) __attribute__((returns_twice));
+void LIBCLAYER(longjmp)(jmp_buf env, int val) __attribute__((noreturn));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/stdlib.h

@@ -0,0 +1,28 @@
+#ifndef _LIBCLAYER_STDLIB_H
+#define _LIBCLAYER_STDLIB_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libclayer.h>
+#include <stddef.h>
+
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
+int LIBCLAYER(atoi)(const char *str);
+
+void LIBCLAYER(abort)() __attribute__((noreturn));
+void LIBCLAYER(exit)(int status) __attribute__((noreturn));
+
+void *LIBCLAYER(calloc)(size_t nmemb, size_t size);
+void  LIBCLAYER(free)(void *ptr);
+void *LIBCLAYER(malloc)(size_t size);
+void *LIBCLAYER(realloc)(void *ptr, size_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/string.h

@@ -0,0 +1,38 @@
+#ifndef _LIBCLAYER_STRING_H
+#define _LIBCLAYER_STRING_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libclayer.h>
+#include <stddef.h>
+
+// mem*
+int    LIBCLAYER(memcmp)(const void *s1, const void *s2, size_t n);
+void  *LIBCLAYER(memcpy)(void *dest, const void *src, size_t n);
+void  *LIBCLAYER(memmove)(void *dest, const void *src, size_t n);
+void  *LIBCLAYER(memchr)(const void *s, int c, size_t n);
+void  *LIBCLAYER(memset)(void *s, int c, size_t n);
+
+// str*
+char  *LIBCLAYER(strcat)(char *dest, const char *src);
+char  *LIBCLAYER(strchr)(const char *s, int c);
+int    LIBCLAYER(strcmp)(const char *s1, const char *s2);
+char  *LIBCLAYER(strcpy)(char *dest, const char *src);
+size_t LIBCLAYER(strlen)(const char *s);
+
+// strn*
+char  *LIBCLAYER(strncat)(char *dest, const char *src, size_t n);
+int    LIBCLAYER(strncmp)(const char *s1, const char *s2, size_t n);
+char  *LIBCLAYER(strncpy)(char *dest, const char *src, size_t n);
+size_t LIBCLAYER(strnlen)(const char *s, size_t maxlen);
+
+// str*
+char  *LIBCLAYER(strstr)(const char *haystack, const char *needle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/libclayer/sys/types.h

@@ -0,0 +1,12 @@
+#ifndef _SYS_TYPES_H
+#define _SYS_TYPES_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/setjmp.h

@@ -1,26 +1,7 @@
-#ifndef _SETJMP_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _SETJMP_H 1
+#include <libclayer/setjmp.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/setjmp.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#include <libclayer.h>
-
-// TODO: define in architecture-specific header
-typedef unsigned long __jmp_buf[sizeof(long) == 8 ? 8 : 6];
-
-typedef struct __jmp_buf_tag {
-    __jmp_buf __jb;
-    unsigned long __fl;
-    unsigned long __ss[128 / sizeof(long)];
-} jmp_buf[1];
-
-int  LIBCLAYER(setjmp)(jmp_buf env) __attribute__((returns_twice));
-void LIBCLAYER(longjmp)(jmp_buf env, int val) __attribute__((noreturn));
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/stdlib.h

@@ -1,28 +1,7 @@
-#ifndef _STDLIB_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _STDLIB_H 1
+#include <libclayer/stdlib.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/stdlib.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#include <libclayer.h>
-#include <stddef.h>
-
-#define EXIT_SUCCESS 0
-#define EXIT_FAILURE 1
-
-int LIBCLAYER(atoi)(const char *str);
-
-void LIBCLAYER(abort)() __attribute__((noreturn));
-void LIBCLAYER(exit)(int status) __attribute__((noreturn));
-
-void *LIBCLAYER(calloc)(size_t nmemb, size_t size);
-void  LIBCLAYER(free)(void *ptr);
-void *LIBCLAYER(malloc)(size_t size);
-void *LIBCLAYER(realloc)(void *ptr, size_t size);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/string.h

@@ -1,38 +1,7 @@
-#ifndef _STRING_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _STRING_H 1
+#include <libclayer/string.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/string.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#include <libclayer.h>
-#include <stddef.h>
-
-// mem*
-int    LIBCLAYER(memcmp)(const void *s1, const void *s2, size_t n);
-void  *LIBCLAYER(memcpy)(void *dest, const void *src, size_t n);
-void  *LIBCLAYER(memmove)(void *dest, const void *src, size_t n);
-void  *LIBCLAYER(memchr)(const void *s, int c, size_t n);
-void  *LIBCLAYER(memset)(void *s, int c, size_t n);
-
-// str*
-char  *LIBCLAYER(strcat)(char *dest, const char *src);
-char  *LIBCLAYER(strchr)(const char *s, int c);
-int    LIBCLAYER(strcmp)(const char *s1, const char *s2);
-char  *LIBCLAYER(strcpy)(char *dest, const char *src);
-size_t LIBCLAYER(strlen)(const char *s);
-
-// strn*
-char  *LIBCLAYER(strncat)(char *dest, const char *src, size_t n);
-int    LIBCLAYER(strncmp)(const char *s1, const char *s2, size_t n);
-char  *LIBCLAYER(strncpy)(char *dest, const char *src, size_t n);
-size_t LIBCLAYER(strnlen)(const char *s, size_t maxlen);
-
-// str*
-char  *LIBCLAYER(strstr)(const char *haystack, const char *needle);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

include/sys/types.h

@@ -1,12 +1,7 @@
-#ifndef _SYS_TYPES_H
+#ifdef LIBCLAYER_NOPREFIX
-#define _SYS_TYPES_H 1
+#include <libclayer/sys/types.h>
-
+#else
-#ifdef __cplusplus
+#define LIBCLAYER_NOPREFIX
-extern "C" {
+#include <libclayer/sys/types.h>
-#endif
+#undef LIBCLAYER_NOPREFIX
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif

make/checks.am

@@ -13,7 +13,6 @@ CPPCHECK_ARGS = \
   --error-exitcode=1 \
   --std=c99          \
   --inline-suppr     \
-  -ULIBCLAYER_PREFIX \
   --enable=warning,style,performance,portability
 
 CPPCHECK_INC = \

src/ctype.c

@@ -2,7 +2,7 @@
 #include "config.h"
 #endif
 
-#include <ctype.h>
+#include <libclayer/ctype.h>
 
 int LIBCLAYER(isdigit)(const int c)
 {

src/errno.c

@@ -2,6 +2,6 @@
 #include "config.h"
 #endif
 
-#include <errno.h>
+#include <libclayer/errno.h>
 
 int LIBCLAYER(errno) = 0;

src/stdlib.c

@@ -3,11 +3,11 @@
 #endif
 
 #include <libclayer.h>
+#include <libclayer/ctype.h>
+#include <libclayer/stdlib.h>
+#include <libclayer/string.h>
 
-#include <ctype.h>
 #include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
 
 void LIBCLAYER(exit)(const int status)
 {

src/string.c

@@ -2,8 +2,9 @@
 #include "config.h"
 #endif
 
+#include <libclayer/string.h>
+
 #include <stddef.h>
-#include <string.h>
 
 int LIBCLAYER(memcmp)(const void *s1, const void *s2, size_t n)
 {

tests/string.c

@@ -1,6 +1,7 @@
+#include <libclayer/string.h>
+
 #include <assert.h>
 #include <stddef.h>
-#include <string.h>
 
 void test_main()
 {