diff options
Diffstat (limited to 'replace/autoconf-2.60.m4')
| -rw-r--r-- | replace/autoconf-2.60.m4 | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/replace/autoconf-2.60.m4 b/replace/autoconf-2.60.m4 deleted file mode 100644 index acdcd38ef..000000000 --- a/replace/autoconf-2.60.m4 +++ /dev/null @@ -1,210 +0,0 @@ -# AC_GNU_SOURCE -# -------------- -AC_DEFUN([AC_GNU_SOURCE], -[AH_VERBATIM([_GNU_SOURCE], -[/* Enable GNU extensions on systems that have them. */ -#ifndef _GNU_SOURCE -# undef _GNU_SOURCE -#endif])dnl -AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl -AC_BEFORE([$0], [AC_RUN_IFELSE])dnl -AC_DEFINE([_GNU_SOURCE]) -]) - -# _AC_C_STD_TRY(STANDARD, TEST-PROLOGUE, TEST-BODY, OPTION-LIST, -# ACTION-IF-AVAILABLE, ACTION-IF-UNAVAILABLE) -# -------------------------------------------------------------- -# Check whether the C compiler accepts features of STANDARD (e.g `c89', `c99') -# by trying to compile a program of TEST-PROLOGUE and TEST-BODY. If this fails, -# try again with each compiler option in the space-separated OPTION-LIST; if one -# helps, append it to CC. If eventually successful, run ACTION-IF-AVAILABLE, -# else ACTION-IF-UNAVAILABLE. -AC_DEFUN([_AC_C_STD_TRY], -[AC_MSG_CHECKING([for $CC option to accept ISO ]m4_translit($1, [c], [C])) -AC_CACHE_VAL(ac_cv_prog_cc_$1, -[ac_cv_prog_cc_$1=no -ac_save_CC=$CC -AC_LANG_CONFTEST([AC_LANG_PROGRAM([$2], [$3])]) -for ac_arg in '' $4 -do - CC="$ac_save_CC $ac_arg" - _AC_COMPILE_IFELSE([], [ac_cv_prog_cc_$1=$ac_arg]) - test "x$ac_cv_prog_cc_$1" != "xno" && break -done -rm -f conftest.$ac_ext -CC=$ac_save_CC -])# AC_CACHE_VAL -case "x$ac_cv_prog_cc_$1" in - x) - AC_MSG_RESULT([none needed]) ;; - xno) - AC_MSG_RESULT([unsupported]) ;; - *) - CC="$CC $ac_cv_prog_cc_$1" - AC_MSG_RESULT([$ac_cv_prog_cc_$1]) ;; -esac -AS_IF([test "x$ac_cv_prog_cc_$1" != xno], [$5], [$6]) -])# _AC_C_STD_TRY - -# _AC_PROG_CC_C99 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) -# ---------------------------------------------------------------- -# If the C compiler is not in ISO C99 mode by default, try to add an -# option to output variable CC to make it so. This macro tries -# various options that select ISO C99 on some system or another. It -# considers the compiler to be in ISO C99 mode if it handles mixed -# code and declarations, _Bool, inline and restrict. -AC_DEFUN([_AC_PROG_CC_C99], -[_AC_C_STD_TRY([c99], -[[#include <stdarg.h> -#include <stdbool.h> -#include <stdlib.h> -#include <wchar.h> -#include <stdio.h> - -struct incomplete_array -{ - int datasize; - double data[]; -}; - -struct named_init { - int number; - const wchar_t *name; - double average; -}; - -typedef const char *ccp; - -static inline int -test_restrict(ccp restrict text) -{ - // See if C++-style comments work. - // Iterate through items via the restricted pointer. - // Also check for declarations in for loops. - for (unsigned int i = 0; *(text+i) != '\0'; ++i) - continue; - return 0; -} - -// Check varargs and va_copy work. -static void -test_varargs(const char *format, ...) -{ - va_list args; - va_start(args, format); - va_list args_copy; - va_copy(args_copy, args); - - const char *str; - int number; - float fnumber; - - while (*format) - { - switch (*format++) - { - case 's': // string - str = va_arg(args_copy, const char *); - break; - case 'd': // int - number = va_arg(args_copy, int); - break; - case 'f': // float - fnumber = (float) va_arg(args_copy, double); - break; - default: - break; - } - } - va_end(args_copy); - va_end(args); -} -]], -[[ - // Check bool and long long datatypes. - _Bool success = false; - long long int bignum = -1234567890LL; - unsigned long long int ubignum = 1234567890uLL; - - // Check restrict. - if (test_restrict("String literal") != 0) - success = true; - char *restrict newvar = "Another string"; - - // Check varargs. - test_varargs("s, d' f .", "string", 65, 34.234); - - // Check incomplete arrays work. - struct incomplete_array *ia = - malloc(sizeof(struct incomplete_array) + (sizeof(double) * 10)); - ia->datasize = 10; - for (int i = 0; i < ia->datasize; ++i) - ia->data[i] = (double) i * 1.234; - - // Check named initialisers. - struct named_init ni = { - .number = 34, - .name = L"Test wide string", - .average = 543.34343, - }; - - ni.number = 58; - - int dynamic_array[ni.number]; - dynamic_array[43] = 543; - - // work around unused variable warnings - return bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x'; -]], -dnl Try -dnl GCC -std=gnu99 (unused restrictive modes: -std=c99 -std=iso9899:1999) -dnl AIX -qlanglvl=extc99 (unused restrictive mode: -qlanglvl=stdc99) -dnl Intel ICC -c99 -dnl IRIX -c99 -dnl Solaris (unused because it causes the compiler to assume C99 semantics for -dnl library functions, and this is invalid before Solaris 10: -xc99) -dnl Tru64 -c99 -dnl with extended modes being tried first. -[[-std=gnu99 -c99 -qlanglvl=extc99]], [$1], [$2])[]dnl -])# _AC_PROG_CC_C99 - -# AC_PROG_CC_C99 -# -------------- -AC_DEFUN([AC_PROG_CC_C99], -[ AC_REQUIRE([AC_PROG_CC])dnl - _AC_PROG_CC_C99 -]) - -# AC_USE_SYSTEM_EXTENSIONS -# ------------------------ -# Enable extensions on systems that normally disable them, -# typically due to standards-conformance issues. -AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS], -[ - AC_BEFORE([$0], [AC_COMPILE_IFELSE]) - AC_BEFORE([$0], [AC_RUN_IFELSE]) - - AC_REQUIRE([AC_GNU_SOURCE]) - AC_REQUIRE([AC_AIX]) - AC_REQUIRE([AC_MINIX]) - - AH_VERBATIM([__EXTENSIONS__], -[/* Enable extensions on Solaris. */ -#ifndef __EXTENSIONS__ -# undef __EXTENSIONS__ -#endif -#ifndef _POSIX_PTHREAD_SEMANTICS -# undef _POSIX_PTHREAD_SEMANTICS -#endif]) - AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__], - [ac_cv_safe_to_define___extensions__], - [AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM([ -# define __EXTENSIONS__ 1 - AC_INCLUDES_DEFAULT])], - [ac_cv_safe_to_define___extensions__=yes], - [ac_cv_safe_to_define___extensions__=no])]) - test $ac_cv_safe_to_define___extensions__ = yes && - AC_DEFINE([__EXTENSIONS__]) - AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) -]) |