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89 lines
2.4 KiB
Plaintext
89 lines
2.4 KiB
Plaintext
# strtoimax.m4 serial 16
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dnl Copyright (C) 2002-2004, 2006, 2009-2021 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_STRTOIMAX],
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[
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AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
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dnl On OSF/1 5.1 with cc, this function is declared but not defined.
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AC_CHECK_FUNCS_ONCE([strtoimax])
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AC_CHECK_DECLS_ONCE([strtoimax])
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if test "$ac_cv_have_decl_strtoimax" != yes; then
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HAVE_DECL_STRTOIMAX=0
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fi
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if test "$ac_cv_func_strtoimax" = yes; then
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HAVE_STRTOIMAX=1
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dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range.
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax],
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[AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <errno.h>
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#include <string.h>
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#include <inttypes.h>
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int main ()
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{
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if (sizeof (intmax_t) > sizeof (int))
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{
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const char *s = "4294967295";
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char *p;
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intmax_t res;
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errno = 0;
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res = strtoimax (s, &p, 10);
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if (p != s + strlen (s))
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return 1;
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if (errno != 0)
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return 2;
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if (res != (intmax_t) 65535 * (intmax_t) 65537)
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return 3;
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}
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else
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{
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const char *s = "2147483647";
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char *p;
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intmax_t res;
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errno = 0;
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res = strtoimax (s, &p, 10);
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if (p != s + strlen (s))
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return 1;
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if (errno != 0)
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return 2;
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if (res != 2147483647)
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return 3;
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}
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return 0;
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}
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]])],
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[gl_cv_func_strtoimax=yes],
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[gl_cv_func_strtoimax=no],
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[case "$host_os" in
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# Guess no on AIX 5.
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aix5*) gl_cv_func_strtoimax="guessing no" ;;
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# Guess yes on native Windows.
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mingw*) gl_cv_func_strtoimax="guessing yes" ;;
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# Guess yes otherwise.
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*) gl_cv_func_strtoimax="guessing yes" ;;
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esac
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])
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])
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case "$gl_cv_func_strtoimax" in
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*no) REPLACE_STRTOIMAX=1 ;;
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esac
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else
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if test "$ac_cv_have_decl_strtoimax" = yes; then
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# HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
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REPLACE_STRTOIMAX=1
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fi
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HAVE_STRTOIMAX=0
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fi
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])
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# Prerequisites of lib/strtoimax.c.
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AC_DEFUN([gl_PREREQ_STRTOIMAX], [
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AC_CHECK_DECLS([strtoll])
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])
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