Don't override user-specified CFLAGS.
diff --git a/configure.ac b/configure.ac
index 2db9035..f4a31e4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,6 +25,8 @@
AM_INIT_AUTOMAKE([foreign -Wall tar-pax no-dist-gzip dist-xz subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+user_cflags=$CFLAGS
+
#Prefer whatever the current ISO standard is.
AC_PROG_CC_STDC
AC_USE_SYSTEM_EXTENSIONS
@@ -346,7 +348,9 @@
else
CPPFLAGS="-DNDEBUG $CPPFLAGS"
if test "x$GCC" = xyes; then
- CFLAGS="-O3 -funroll-loops -Wall -W -Winline $CFLAGS"
+ if test "x$user_cflags" = x; then
+ CFLAGS="-O3 -funroll-loops -Wall -W -Winline"
+ fi
fi
fi