diff options
Diffstat (limited to 'm4')
-rw-r--r-- | m4/c-strtod.m4 | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/m4/c-strtod.m4 b/m4/c-strtod.m4 index 1694a2396c..1d4b7f860c 100644 --- a/m4/c-strtod.m4 +++ b/m4/c-strtod.m4 @@ -1,4 +1,4 @@ -# c-strtod.m4 serial 16 +# c-strtod.m4 serial 17 # Copyright (C) 2004-2006, 2009-2019 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation @@ -7,36 +7,11 @@ # Written by Paul Eggert. -AC_DEFUN([gl_C99_STRTOLD], -[ - AC_CACHE_CHECK([whether strtold conforms to C99], - [gl_cv_func_c99_strtold], - [AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[/* On HP-UX before 11.23, strtold returns a struct instead of - long double. Reject implementations like that, by requiring - compatibility with the C99 prototype. */ - #include <stdlib.h> - static long double (*p) (char const *, char **) = strtold; - static long double - test (char const *nptr, char **endptr) - { - long double r; - r = strtold (nptr, endptr); - return r; - }]], - [[return test ("1.0", NULL) != 1 || p ("1.0", NULL) != 1;]])], - [gl_cv_func_c99_strtold=yes], - [gl_cv_func_c99_strtold=no])]) - if test $gl_cv_func_c99_strtold = yes; then - AC_DEFINE([HAVE_C99_STRTOLD], [1], [Define to 1 if strtold conforms to C99.]) - fi -]) - dnl Prerequisites of lib/c-strtod.c. AC_DEFUN([gl_C_STRTOD], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([gt_FUNC_USELOCALE]) AC_CHECK_HEADERS_ONCE([xlocale.h]) dnl We can't use AC_CHECK_FUNC here, because strtod_l() is defined as a @@ -71,6 +46,8 @@ dnl Prerequisites of lib/c-strtold.c. AC_DEFUN([gl_C_STRTOLD], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) - AC_REQUIRE([gl_C99_STRTOLD]) + AC_REQUIRE([gt_FUNC_USELOCALE]) + AC_DEFINE([HAVE_C99_STRTOLD], [1], + [Define to 1 because the gnulib 'strtold' module provides a C99-conforming strtold function.]) AC_CHECK_FUNCS([strtold_l]) ]) |