From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 25 Oct 2012 18:52:12 +0000 (-0400)
Subject: configure: test not just compiling but linking with -march/-mtune
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=80a45458e0d9b75d508110bd880d0ae0432b0356;hp=c8cb6bcdf009e94c12c6e256b8e24a9bc5fdaf05

configure: test not just compiling but linking with -march/-mtune

pcc wrongly passes any option beginning with -m to the linker, and
will break at link time if these options were added to CFLAGS. testing
linking lets us catch this at configure time and skip them.
---

diff --git a/configure b/configure
index c1bcac7c..327734ae 100755
--- a/configure
+++ b/configure
@@ -269,8 +269,8 @@ tryflag CFLAGS_AUTO -falign-jumps=1
 # work anyway (issues with atomic ops).
 #
 if test "$ARCH" = "i386" ; then
-fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryflag CFLAGS_AUTO -march=i486
-fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryflag CFLAGS_AUTO -mtune=generic
+fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -march=i486
+fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -mtune=generic
 fi
 
 if test "x$warnings" = xyes ; then