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Diffstat (limited to 'm4/strtol.m4')
| -rw-r--r-- | m4/strtol.m4 | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/m4/strtol.m4 b/m4/strtol.m4 new file mode 100644 index 0000000..5cdd86a --- /dev/null +++ b/m4/strtol.m4 @@ -0,0 +1,57 @@ +# strtol.m4 serial 8 +dnl Copyright (C) 2002-2003, 2006, 2009-2023 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. + +AC_DEFUN([gl_FUNC_STRTOL], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_CHECK_FUNCS([strtol]) + if test $ac_cv_func_strtol = yes; then + AC_CACHE_CHECK([whether strtol works], + [gl_cv_func_strtol_works], + [AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [[#include <stdlib.h>]], + [[int result = 0; + char *term; + /* This test fails on Minix and native Windows. */ + { + const char input[] = "0x"; + (void) strtol (input, &term, 16); + if (term != input + 1) + result |= 1; + } + /* This test fails on pre-C23 platforms. */ + { + const char input[] = "0b1"; + (void) strtol (input, &term, 2); + if (term != input + 3) + result |= 2; + } + return result; + ]]) + ], + [gl_cv_func_strtol_works=yes], + [gl_cv_func_strtol_works=no], + [case "$host_os" in + # Guess no on native Windows. + mingw*) gl_cv_func_strtol_works="guessing no" ;; + # Guess no on glibc systems. + *-gnu* | gnu*) gl_cv_func_strtol_works="guessing no" ;; + # Guess no on musl systems. + *-musl* | midipix*) gl_cv_func_strtol_works="guessing no" ;; + *) gl_cv_func_strtol_works="$gl_cross_guess_normal" ;; + esac + ]) + ]) + case "$gl_cv_func_strtol_works" in + *yes) ;; + *) REPLACE_STRTOL=1 ;; + esac + else + HAVE_STRTOL=0 + fi +]) |