From 9023fd9ea0fb53c88e1fd7279b31e3be53cd4aab Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 20 Apr 2016 14:41:55 +0000 Subject: [PATCH] Don't build 32-bit libatomic with -march=i486 on x86-64 Gcc uses the same -march= for both -m32 and -m64 on x86-64 unless --with-arch-32= is used. There is no need for -march=i486 to compile 32-bit libatomic on x86-64. PR target/70454 * configure.tgt (XCFLAGS): Don't add -march=i486 to compile 32-bit x86 target library on x86-64. From-SVN: r235287 --- libatomic/ChangeLog | 6 ++++++ libatomic/configure.tgt | 10 ++-------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/libatomic/ChangeLog b/libatomic/ChangeLog index f476a6f..70a7f7c 100644 --- a/libatomic/ChangeLog +++ b/libatomic/ChangeLog @@ -1,3 +1,9 @@ +2016-04-20 H.J. Lu + + PR target/70454 + * configure.tgt (XCFLAGS): Don't add -march=i486 to compile + 32-bit x86 target library on x86-64. + 2016-01-06 Szabolcs Nagy PR other/67627 diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt index c5470d7..49233a4 100644 --- a/libatomic/configure.tgt +++ b/libatomic/configure.tgt @@ -81,14 +81,8 @@ case "${target_cpu}" in try_ifunc=yes ;; x86_64) - case " ${CC} ${CFLAGS} " in - *" -m32 "*) - XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic" - XCFLAGS="${XCFLAGS} -fomit-frame-pointer" - ;; - *) - ;; - esac + # x86_64 compiler passes -march=x86_64 by default when building + # 32bit target libraries. ARCH=x86 # ??? Detect when -mcx16 is already enabled. try_ifunc=yes -- 2.7.4