| # stdlib_h.m4 |
| # serial 86 |
| dnl Copyright (C) 2007-2026 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| dnl This file is offered as-is, without any warranty. |
| |
| AC_DEFUN_ONCE([gl_STDLIB_H], |
| [ |
| AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) |
| gl_NEXT_HEADERS([stdlib.h]) |
| |
| dnl Check for declarations of anything we want to poison if the |
| dnl corresponding gnulib module is not in use, and which is not |
| dnl guaranteed by C89. |
| gl_WARN_ON_USE_PREPARE([[#include <stdlib.h> |
| #if HAVE_SYS_LOADAVG_H |
| /* OpenIndiana has a bug: <sys/time.h> must be included before |
| <sys/loadavg.h>. */ |
| # include <sys/time.h> |
| # include <sys/loadavg.h> |
| #endif |
| #if HAVE_RANDOM_H |
| # include <random.h> |
| #endif |
| ]], [_Exit aligned_alloc atoll canonicalize_file_name free |
| getloadavg getprogname getsubopt grantpt |
| initstate initstate_r mbstowcs mbtowc mkdtemp mkostemp mkostemps mkstemp |
| mkstemps posix_memalign posix_openpt ptsname ptsname_r qsort_r |
| random random_r reallocarray realpath rpmatch secure_getenv setenv |
| setstate setstate_r srandom srandom_r |
| strtod strtol strtold strtoll strtoul strtoull unlockpt unsetenv]) |
| |
| AC_REQUIRE([AC_C_RESTRICT]) |
| |
| dnl Test whether MB_CUR_MAX needs to be overridden. |
| dnl On Solaris 10, in UTF-8 locales, its value is 3 but needs to be 4. |
| dnl Fortunately, we can do this because on this platform MB_LEN_MAX is 5. |
| AC_REQUIRE([AC_CANONICAL_HOST]) |
| AC_REQUIRE([gt_LOCALE_EN_UTF8]) |
| AC_CACHE_CHECK([whether MB_CUR_MAX is correct], |
| [gl_cv_macro_MB_CUR_MAX_good], |
| [AC_LINK_IFELSE( |
| [AC_LANG_PROGRAM([[#include <stdlib.h> |
| ]], |
| [[return !!MB_CUR_MAX;]]) |
| ], |
| [dnl Initial guess, used when cross-compiling or when no suitable locale |
| dnl is present. |
| # Guess no on Solaris and Haiku, yes otherwise. |
| AS_CASE([$host_os], |
| [solaris* | haiku*], |
| [gl_cv_macro_MB_CUR_MAX_good="guessing no"], |
| [gl_cv_macro_MB_CUR_MAX_good="guessing yes"]) |
| if test "$LOCALE_EN_UTF8" != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <stdlib.h> |
| int main () |
| { |
| int result = 0; |
| if (setlocale (LC_ALL, "$LOCALE_EN_UTF8") != NULL) |
| { |
| if (MB_CUR_MAX < 4) |
| result |= 1; |
| } |
| return result; |
| }]])], |
| [gl_cv_macro_MB_CUR_MAX_good=yes], |
| [gl_cv_macro_MB_CUR_MAX_good=no], |
| [:]) |
| fi |
| ], |
| [gl_cv_macro_MB_CUR_MAX_good="link failed - so no"]) |
| ]) |
| AS_CASE([$gl_cv_macro_MB_CUR_MAX_good], |
| [*yes], |
| [], |
| ["link failed - so no"], |
| [# 4 suffices as a workaround in Android NDK 16, |
| # the only known platform with the bug. |
| REPLACE_MB_CUR_MAX=4], |
| [REPLACE_MB_CUR_MAX="(-1)"]) |
| |
| AC_CHECK_DECLS_ONCE([ecvt]) |
| if test $ac_cv_have_decl_ecvt = no; then |
| HAVE_DECL_ECVT=0 |
| fi |
| AC_CHECK_DECLS_ONCE([fcvt]) |
| if test $ac_cv_have_decl_fcvt = no; then |
| HAVE_DECL_FCVT=0 |
| fi |
| AC_CHECK_DECLS_ONCE([gcvt]) |
| if test $ac_cv_have_decl_gcvt = no; then |
| HAVE_DECL_GCVT=0 |
| fi |
| ]) |
| |
| # gl_STDLIB_MODULE_INDICATOR([modulename]) |
| # sets the shell variable that indicates the presence of the given module |
| # to a C preprocessor expression that will evaluate to 1. |
| # This macro invocation must not occur in macros that are AC_REQUIREd. |
| AC_DEFUN([gl_STDLIB_MODULE_INDICATOR], |
| [ |
| dnl Ensure to expand the default settings once only. |
| gl_STDLIB_H_REQUIRE_DEFAULTS |
| gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
| dnl Define it also as a C macro, for the benefit of the unit tests. |
| gl_MODULE_INDICATOR_FOR_TESTS([$1]) |
| ]) |
| |
| # Initializes the default values for AC_SUBSTed shell variables. |
| # This macro must not be AC_REQUIREd. It must only be invoked, and only |
| # outside of macros or in macros that are not AC_REQUIREd. |
| AC_DEFUN([gl_STDLIB_H_REQUIRE_DEFAULTS], |
| [ |
| m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS], [ |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB__EXIT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ABORT_DEBUG]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALIGNED_ALLOC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATOLL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CALLOC_GNU]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CALLOC_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CANONICALIZE_FILE_NAME]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREE_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOADAVG]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPROGNAME]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSUBOPT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GRANTPT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MALLOC_GNU]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MALLOC_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSTOWCS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBTOWC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDTEMP]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMP]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMPS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMP]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMPS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_MEMALIGN]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_OPENPT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME_R]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTENV]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_QSORT_R]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAND]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM_R]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOCARRAY]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOC_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALPATH]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RPMATCH]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SECURE_GETENV]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETENV]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STACK_TRACE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOD]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLD]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOUL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOULL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYSTEM_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLOCKPT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNSETENV]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTOMB]) |
| dnl Support Microsoft deprecated alias function names by default. |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ECVT], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FCVT], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GCVT], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKTEMP], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_PUTENV], [1]) |
| ]) |
| m4_require(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS]) |
| AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) |
| ]) |
| |
| AC_DEFUN([gl_STDLIB_H_DEFAULTS], |
| [ |
| dnl Assume proper GNU behavior unless another module says otherwise. |
| HAVE__EXIT=1; AC_SUBST([HAVE__EXIT]) |
| HAVE_ALIGNED_ALLOC=1; AC_SUBST([HAVE_ALIGNED_ALLOC]) |
| HAVE_ATOLL=1; AC_SUBST([HAVE_ATOLL]) |
| HAVE_CANONICALIZE_FILE_NAME=1; AC_SUBST([HAVE_CANONICALIZE_FILE_NAME]) |
| HAVE_DECL_ECVT=1; AC_SUBST([HAVE_DECL_ECVT]) |
| HAVE_DECL_FCVT=1; AC_SUBST([HAVE_DECL_FCVT]) |
| HAVE_DECL_GCVT=1; AC_SUBST([HAVE_DECL_GCVT]) |
| HAVE_DECL_GETLOADAVG=1; AC_SUBST([HAVE_DECL_GETLOADAVG]) |
| HAVE_DECL_PROGRAM_INVOCATION_NAME=1; AC_SUBST([HAVE_DECL_PROGRAM_INVOCATION_NAME]) |
| HAVE_GETPROGNAME=1; AC_SUBST([HAVE_GETPROGNAME]) |
| HAVE_GETSUBOPT=1; AC_SUBST([HAVE_GETSUBOPT]) |
| HAVE_GRANTPT=1; AC_SUBST([HAVE_GRANTPT]) |
| HAVE_INITSTATE=1; AC_SUBST([HAVE_INITSTATE]) |
| HAVE_DECL_INITSTATE=1; AC_SUBST([HAVE_DECL_INITSTATE]) |
| HAVE_MBTOWC=1; AC_SUBST([HAVE_MBTOWC]) |
| HAVE_MKDTEMP=1; AC_SUBST([HAVE_MKDTEMP]) |
| HAVE_MKOSTEMP=1; AC_SUBST([HAVE_MKOSTEMP]) |
| HAVE_MKOSTEMPS=1; AC_SUBST([HAVE_MKOSTEMPS]) |
| HAVE_MKSTEMP=1; AC_SUBST([HAVE_MKSTEMP]) |
| HAVE_MKSTEMPS=1; AC_SUBST([HAVE_MKSTEMPS]) |
| HAVE_POSIX_MEMALIGN=1; AC_SUBST([HAVE_POSIX_MEMALIGN]) |
| HAVE_POSIX_OPENPT=1; AC_SUBST([HAVE_POSIX_OPENPT]) |
| HAVE_PTSNAME=1; AC_SUBST([HAVE_PTSNAME]) |
| HAVE_PTSNAME_R=1; AC_SUBST([HAVE_PTSNAME_R]) |
| HAVE_QSORT_R=1; AC_SUBST([HAVE_QSORT_R]) |
| HAVE_RANDOM=1; AC_SUBST([HAVE_RANDOM]) |
| HAVE_RANDOM_R=1; AC_SUBST([HAVE_RANDOM_R]) |
| HAVE_REALLOCARRAY=1; AC_SUBST([HAVE_REALLOCARRAY]) |
| HAVE_REALPATH=1; AC_SUBST([HAVE_REALPATH]) |
| HAVE_RPMATCH=1; AC_SUBST([HAVE_RPMATCH]) |
| HAVE_SECURE_GETENV=1; AC_SUBST([HAVE_SECURE_GETENV]) |
| HAVE_SETENV=1; AC_SUBST([HAVE_SETENV]) |
| HAVE_DECL_SETENV=1; AC_SUBST([HAVE_DECL_SETENV]) |
| HAVE_SETSTATE=1; AC_SUBST([HAVE_SETSTATE]) |
| HAVE_DECL_SETSTATE=1; AC_SUBST([HAVE_DECL_SETSTATE]) |
| HAVE_STRTOD=1; AC_SUBST([HAVE_STRTOD]) |
| HAVE_STRTOF=1; AC_SUBST([HAVE_STRTOF]) |
| HAVE_STRTOL=1; AC_SUBST([HAVE_STRTOL]) |
| HAVE_STRTOLD=1; AC_SUBST([HAVE_STRTOLD]) |
| HAVE_STRTOLL=1; AC_SUBST([HAVE_STRTOLL]) |
| HAVE_STRTOUL=1; AC_SUBST([HAVE_STRTOUL]) |
| HAVE_STRTOULL=1; AC_SUBST([HAVE_STRTOULL]) |
| HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA]) |
| HAVE_SYS_LOADAVG_H=0; AC_SUBST([HAVE_SYS_LOADAVG_H]) |
| HAVE_SYS_PROCESS_H=0; AC_SUBST([HAVE_SYS_PROCESS_H]) |
| HAVE_UNLOCKPT=1; AC_SUBST([HAVE_UNLOCKPT]) |
| HAVE_DECL_UNSETENV=1; AC_SUBST([HAVE_DECL_UNSETENV]) |
| REPLACE__EXIT=0; AC_SUBST([REPLACE__EXIT]) |
| REPLACE_ABORT=0; AC_SUBST([REPLACE_ABORT]) |
| REPLACE_ALIGNED_ALLOC=0; AC_SUBST([REPLACE_ALIGNED_ALLOC]) |
| REPLACE_CALLOC_FOR_CALLOC_GNU=0; AC_SUBST([REPLACE_CALLOC_FOR_CALLOC_GNU]) |
| REPLACE_CALLOC_FOR_CALLOC_POSIX=0; AC_SUBST([REPLACE_CALLOC_FOR_CALLOC_POSIX]) |
| REPLACE_CANONICALIZE_FILE_NAME=0; AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME]) |
| REPLACE_FREE=0; AC_SUBST([REPLACE_FREE]) |
| REPLACE_GETLOADAVG=0; AC_SUBST([REPLACE_GETLOADAVG]) |
| REPLACE_GETPROGNAME=0; AC_SUBST([REPLACE_GETPROGNAME]) |
| REPLACE_GETSUBOPT=0; AC_SUBST([REPLACE_GETSUBOPT]) |
| REPLACE_INITSTATE=0; AC_SUBST([REPLACE_INITSTATE]) |
| REPLACE_MALLOC_FOR_MALLOC_GNU=0; AC_SUBST([REPLACE_MALLOC_FOR_MALLOC_GNU]) |
| REPLACE_MALLOC_FOR_MALLOC_POSIX=0; AC_SUBST([REPLACE_MALLOC_FOR_MALLOC_POSIX]) |
| REPLACE_MB_CUR_MAX=0; AC_SUBST([REPLACE_MB_CUR_MAX]) |
| REPLACE_MBSTOWCS=0; AC_SUBST([REPLACE_MBSTOWCS]) |
| REPLACE_MBTOWC=0; AC_SUBST([REPLACE_MBTOWC]) |
| REPLACE_MKOSTEMP=0; AC_SUBST([REPLACE_MKOSTEMP]) |
| REPLACE_MKOSTEMPS=0; AC_SUBST([REPLACE_MKOSTEMPS]) |
| REPLACE_MKSTEMP=0; AC_SUBST([REPLACE_MKSTEMP]) |
| REPLACE_POSIX_MEMALIGN=0; AC_SUBST([REPLACE_POSIX_MEMALIGN]) |
| REPLACE_POSIX_OPENPT=0; AC_SUBST([REPLACE_POSIX_OPENPT]) |
| REPLACE_PTSNAME=0; AC_SUBST([REPLACE_PTSNAME]) |
| REPLACE_PTSNAME_R=0; AC_SUBST([REPLACE_PTSNAME_R]) |
| REPLACE_PUTENV=0; AC_SUBST([REPLACE_PUTENV]) |
| REPLACE_QSORT_R=0; AC_SUBST([REPLACE_QSORT_R]) |
| REPLACE_RAND=0; AC_SUBST([REPLACE_RAND]) |
| REPLACE_RANDOM=0; AC_SUBST([REPLACE_RANDOM]) |
| REPLACE_RANDOM_R=0; AC_SUBST([REPLACE_RANDOM_R]) |
| REPLACE_REALLOC_FOR_REALLOC_POSIX=0; AC_SUBST([REPLACE_REALLOC_FOR_REALLOC_POSIX]) |
| REPLACE_REALLOCARRAY=0; AC_SUBST([REPLACE_REALLOCARRAY]) |
| REPLACE_REALPATH=0; AC_SUBST([REPLACE_REALPATH]) |
| REPLACE_SETENV=0; AC_SUBST([REPLACE_SETENV]) |
| REPLACE_SETSTATE=0; AC_SUBST([REPLACE_SETSTATE]) |
| REPLACE_STRTOD=0; AC_SUBST([REPLACE_STRTOD]) |
| REPLACE_STRTOF=0; AC_SUBST([REPLACE_STRTOF]) |
| REPLACE_STRTOL=0; AC_SUBST([REPLACE_STRTOL]) |
| REPLACE_STRTOLD=0; AC_SUBST([REPLACE_STRTOLD]) |
| REPLACE_STRTOLL=0; AC_SUBST([REPLACE_STRTOLL]) |
| REPLACE_STRTOUL=0; AC_SUBST([REPLACE_STRTOUL]) |
| REPLACE_STRTOULL=0; AC_SUBST([REPLACE_STRTOULL]) |
| REPLACE_UNSETENV=0; AC_SUBST([REPLACE_UNSETENV]) |
| REPLACE_WCTOMB=0; AC_SUBST([REPLACE_WCTOMB]) |
| CAN_PRINT_STACK_TRACE=0; AC_SUBST([CAN_PRINT_STACK_TRACE]) |
| ]) |
