From: Jehan <jehan@girinstud.io>
Date: Fri, 1 Jan 2016 17:35:14 +0000 (+0100)
Subject: configure: check realloc with AC_CHECK_FUNCS() to fix cross-compilation.
X-Git-Tag: json-c-0.13-20171207~168^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F216%2Fhead;p=thirdparty%2Fjson-c.git

configure: check realloc with AC_CHECK_FUNCS() to fix cross-compilation.

AC_FUNC_REALLOC is messed up when cross-compiling, ending up in failed
build with "undefined reference to `rpl_realloc'" error.
AC_CHECK_FUNCS will work both with native and cross builds.
---

diff --git a/configure.ac b/configure.ac
index 2f3c92ff..cdae2924 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ AC_TYPE_SIZE_T
 # Checks for library functions.
 AC_FUNC_VPRINTF
 AC_FUNC_MEMCMP
-AC_FUNC_REALLOC
+AC_CHECK_FUNCS([realloc])
 AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
 AC_CHECK_DECLS([INFINITY], [], [], [[#include <math.h>]])
 AC_CHECK_DECLS([nan], [], [], [[#include <math.h>]])