56 lines
1.6 KiB
Diff
56 lines
1.6 KiB
Diff
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From cbcff58ed670c8edc0be1004384cbe0fd07d8d26 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Wed, 5 Jul 2017 18:49:21 -0700
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Subject: [PATCH 1/2] check for available arm optimizations
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Taken From
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http://sources.debian.net/src/mpeg2dec/0.5.1-7/debian/patches/65_arm-test-with-compiler.patch/
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Upstream-Status: Pending
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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configure.ac | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index acdcb1e..2c0a721 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -59,7 +59,7 @@ elif test x"$GCC" = x"yes"; then
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AC_TRY_CFLAGS([$TRY_CFLAGS $CFLAGS],[OPT_CFLAGS="$TRY_CFLAGS"])
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dnl arch-specific flags
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- arm_conditional=false
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+ build_arm_opt=false
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case "$host" in
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i?86-* | k?-* | x86_64-* | amd64-*)
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AC_DEFINE([ARCH_X86],,[x86 architecture])
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@@ -102,8 +102,12 @@ elif test x"$GCC" = x"yes"; then
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alpha*)
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AC_DEFINE([ARCH_ALPHA],,[alpha architecture]);;
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arm*)
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- arm_conditional=:
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- AC_DEFINE([ARCH_ARM],,[ARM architecture]);;
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+ AC_LANG(C)
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+ AC_COMPILE_IFELSE(
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+ [AC_LANG_SOURCE([[
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+ void foo(void) { __asm__ volatile("pld [r1]"); }]])],
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+ build_arm_opt=true; AC_DEFINE([ARCH_ARM],,[ARM architecture]),
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+ build_arm_opt=false);;
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esac
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elif test x"$CC" = x"tendracc"; then
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dnl TenDRA portability checking compiler
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@@ -123,7 +127,7 @@ else
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esac
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fi
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-AM_CONDITIONAL(ARCH_ARM, ${arm_conditional})
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+AM_CONDITIONAL(ARCH_ARM, test x$build_arm_opt = xtrue)
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dnl Checks for libtool - this must be done after we set cflags
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AC_LIBTOOL_WIN32_DLL
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--
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2.13.2
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