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From 6a8ec0557194fb5071503de95f2160361ae3427e Mon Sep 17 00:00:00 2001
From: Bian Naimeng <biannm@cn.fujitsu.com>
Date: Tue, 1 Apr 2014 16:20:39 +0200
Subject: [PATCH] fix header defs lookup
Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>
---
configure.ac | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 066d126f..32a76169 100644
--- a/configure.ac
+++ b/configure.ac
@@ -160,9 +160,8 @@ extract_header_define() {
Cfile=$srcdir/extract_define.$2.${$}
printf "#include <stdio.h>\n" > ${Cfile}.c
printf "#include <%s>\n" $1 >> ${Cfile}.c
- printf "int main(int argc, char **argv) { printf(\"%%s\", %s); return 0; }\n" $2 >> ${Cfile}.c
- $CC $CFLAGS ${Cfile}.c -o ${Cfile}
- value=`${Cfile}`
+ printf "\"%s\":%s\n" $2 $2 >> ${Cfile}.c
+ value=`$CC $CFLAGS -E ${Cfile}.c | grep \"$2\" | cut -f 2 -d ':'`
AC_MSG_RESULT($value)
printf $value
rm -f ${Cfile}.c ${Cfile}
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