diff options
Diffstat (limited to 'm4/strtoimax.m4')
| -rw-r--r-- | m4/strtoimax.m4 | 89 |
1 files changed, 71 insertions, 18 deletions
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4 index 9957637..9d920ab 100644 --- a/m4/strtoimax.m4 +++ b/m4/strtoimax.m4 @@ -1,34 +1,87 @@ -# strtoimax.m4 serial 6 -dnl Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc. +# strtoimax.m4 serial 14 +dnl Copyright (C) 2002-2004, 2006, 2009-2016 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_STRTOIMAX], [ - dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57. - AC_REQUIRE([AC_PROG_CPP]) - AC_REQUIRE([AC_PROG_EGREP]) + AC_REQUIRE([gl_INTTYPES_H_DEFAULTS]) - AC_CACHE_CHECK([whether <inttypes.h> defines strtoimax as a macro], - jm_cv_func_strtoimax_macro, - [AC_EGREP_CPP([inttypes_h_defines_strtoimax], [#include <inttypes.h> -#ifdef strtoimax - inttypes_h_defines_strtoimax -#endif], - jm_cv_func_strtoimax_macro=yes, - jm_cv_func_strtoimax_macro=no)]) + dnl On OSF/1 5.1 with cc, this function is declared but not defined. + AC_CHECK_FUNCS_ONCE([strtoimax]) + AC_CHECK_DECLS_ONCE([strtoimax]) + if test "$ac_cv_have_decl_strtoimax" != yes; then + HAVE_DECL_STRTOIMAX=0 + fi - if test "$jm_cv_func_strtoimax_macro" != yes; then - AC_REPLACE_FUNCS(strtoimax) - if test $ac_cv_func_strtoimax = no; then - gl_PREREQ_STRTOIMAX + if test "$ac_cv_func_strtoimax" = yes; then + HAVE_STRTOIMAX=1 + dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range. + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax], + [AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <errno.h> +#include <string.h> +#include <inttypes.h> +int main () +{ + if (sizeof (intmax_t) > sizeof (int)) + { + const char *s = "4294967295"; + char *p; + intmax_t res; + errno = 0; + res = strtoimax (s, &p, 10); + if (p != s + strlen (s)) + return 1; + if (errno != 0) + return 2; + if (res != (intmax_t) 65535 * (intmax_t) 65537) + return 3; + } + else + { + const char *s = "2147483647"; + char *p; + intmax_t res; + errno = 0; + res = strtoimax (s, &p, 10); + if (p != s + strlen (s)) + return 1; + if (errno != 0) + return 2; + if (res != 2147483647) + return 3; + } + return 0; +} +]])], + [gl_cv_func_strtoimax=yes], + [gl_cv_func_strtoimax=no], + [case "$host_os" in + # Guess no on AIX 5. + aix5*) gl_cv_func_strtoimax="guessing no" ;; + # Guess yes otherwise. + *) gl_cv_func_strtoimax="guessing yes" ;; + esac + ]) + ]) + case "$gl_cv_func_strtoimax" in + *no) REPLACE_STRTOIMAX=1 ;; + esac + else + if test "$ac_cv_have_decl_strtoimax" = yes; then + # HP-UX 11.11 has "#define strtoimax(...) ..." but no function. + REPLACE_STRTOIMAX=1 fi + HAVE_STRTOIMAX=0 fi ]) # Prerequisites of lib/strtoimax.c. AC_DEFUN([gl_PREREQ_STRTOIMAX], [ - AC_CHECK_DECLS(strtoll) + AC_CHECK_DECLS([strtoll]) AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) ]) |