From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 18 Feb 2016 04:09:33 +0000 (+0000)
Subject: partly revert detection of broken float in configure
X-Git-Tag: v1.1.14~7
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5030e4a0605707c3f84c04c70ac689ca6ee54ffd;p=oweals%2Fmusl.git

partly revert detection of broken float in configure

commit 80fbaac4cd1930e9545a5d36bf46ae49011d2ce8 broke all soft-float
archs, where gcc defines __GCC_IEC_559==0 because rounding modes and
exception flags are not supported. for now, just check for
__FAST_MATH__ as an indication of broken float. this won't detect all
possible misconfigurations but it probably catches the most common
one.
---

diff --git a/configure b/configure
index 779a3ef0..0e365856 100755
--- a/configure
+++ b/configure
@@ -660,7 +660,7 @@ fi
 # for all packages. On recent GCC we can detect this and error out
 # early rather than producing a seriously-broken math library.
 #
-if trycppif "__FAST_MATH__ || (defined(__GCC_IEC_559) && __GCC_IEC_559==0)" \
+if trycppif "__FAST_MATH__" \
   "$CFLAGS_C99FSE $CPPFLAGS $CFLAGS" ; then
 fail "$0: error: compiler has broken floating point; check CFLAGS"
 fi