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[Xen-devel] [PATCH v2 2/4] autoconf: correctly parse *_INCLUDES and *_LIB env vars



Parse those options correctly, since the "+=" operator is not valid.
Also added CPPFLAGS, so headers checks don't give strange results.

Signed-off-by: Roger Pau Monne <roger.pau@xxxxxxxxxx>
---
 tools/m4/set_cflags_ldflags.m4 |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/tools/m4/set_cflags_ldflags.m4 b/tools/m4/set_cflags_ldflags.m4
index 7e357ba..631e81c 100644
--- a/tools/m4/set_cflags_ldflags.m4
+++ b/tools/m4/set_cflags_ldflags.m4
@@ -1,20 +1,21 @@
 AC_DEFUN([AX_SET_FLAGS],
 [for cflag in $PREPEND_INCLUDES
 do
-    PREPEND_CFLAGS+=" -I$cflag"
+    PREPEND_CFLAGS="$PREPEND_CFLAGS -I$cflag"
 done
 for ldflag in $PREPEND_LIB
 do
-    PREPEND_LDFLAGS+=" -L$ldflag"
+    PREPEND_LDFLAGS="$PREPEND_LDFLAGS -L$ldflag"
 done
 for cflag in $APPEND_INCLUDES
 do
-    APPEND_CFLAGS+=" -I$cflag"
+    APPEND_CFLAGS="$APPEND_CFLAGS -I$cflag"
 done
 for ldflag in $APPEND_LIB
 do
-    APPEND_LDFLAGS+=" -L$ldflag"
+    APPEND_LDFLAGS="$APPEND_LDFLAGS -L$ldflag"
 done
 CFLAGS="$PREPEND_CFLAGS $CFLAGS $APPEND_CFLAGS"
+CPPFLAGS="$CFLAGS"
 LDFLAGS="$PREPEND_LDFLAGS $LDFLAGS $APPEND_LDFLAGS"])
 
-- 
1.7.7.5 (Apple Git-26)


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