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Issue#114: check for the presence of isnan and isinf, and provide compat macros on MSCV where _isnan and _finite exist instead.

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Eric Haszlakiewicz
2014-03-02 12:16:37 -05:00
parent db117ca02b
commit e6f1322b5e
4 changed files with 42 additions and 1 deletions
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6
configure.ac
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@@ -3,7 +3,7 @@ AC_PREREQ(2.52)
# Process this file with autoconf to produce a configure script.
AC_INIT([json-c], 0.11.99, [json-c@googlegroups.com])
AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
AM_INIT_AUTOMAKE
AC_PROG_MAKE_SET
@@ -29,6 +29,10 @@ AC_FUNC_MEMCMP
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
AC_CHECK_DECLS([isnan], [], [], [[#include <math.h>]])
AC_CHECK_DECLS([isinf], [], [], [[#include <math.h>]])
AC_CHECK_DECLS([_isnan], [], [], [[#include <float.h>]])
AC_CHECK_DECLS([_finite], [], [], [[#include <float.h>]])
#check if .section.gnu.warning accepts long strings (for __warn_references)
AC_LANG_PUSH([C])