ref: 24d4f0fe9a13303135d045b9f2bb3917cdebd3c9
parent: 6ea8b264bb39e83b68ebfaeb3ac93206358c023b
author: Bernd Kuhls <[email protected]>
date: Mon Apr 13 08:03:01 EDT 2020
fix mips build In total three PR were sent upstream to fix mips builds: https://github.com/cisco/openh264/pull/3185 https://github.com/cisco/openh264/pull/3217 https://github.com/cisco/openh264/pull/3225 Buildroot used the first version https://git.buildroot.net/buildroot/commit/package/libopenh264?id=e8d0df569e1844f7ba28918a53ee38027b325b8f downloaded from https://github.com/cisco/openh264/pull/3185 During discussion the gcc option '-march=loongson3a' was changed to '-Wa,-mloongson-mmi,-mloongson-ext': https://github.com/cisco/openh264/pull/3185#discussion_r337818960 This causes build errors with gcc version 8.3.0 (Buildroot 2020.02) tmp/cctgEQaw.s:662: Error: opcode not supported on this processor: loongson3a (mips64r2) `bc .L22' /tmp/cctgEQaw.s:1679: Error: opcode not supported on this processor: loongson3a (mips64r2) `bc .L27' /tmp/cctgEQaw.s:2218: Error: opcode not supported on this processor: loongson3a (mips64r2) `jrc $31' This patch partly reverts the change to fix mips build. $ /home/bernd/buildroot/br5/output/host/bin/mips64el-linux-gcc -v Using built-in specs. COLLECT_GCC=/home/bernd/buildroot/br5/output/host/opt/ext-toolchain/bin/mips64el-linux-gcc.br_real COLLECT_LTO_WRAPPER=/home/bernd/buildroot/br5/output/host/opt/ext-toolchain/bin/../libexec/gcc/mips64el-buildroot-linux-gnu/8.3.0/lto-wrapper Target: mips64el-buildroot-linux-gnu Configured with: ./configure --prefix=/opt/br-mips64r6-n64-el-hf-2020.02 --sysconfdir=/opt/br-mips64r6-n64-el-hf-2020.02/etc --enable-static --target=mips64el-buildroot-linux-gnu --with-sysroot=/opt/br-mips64r6-n64-el-hf-2020.02/mips64el-buildroot-linux-gnu/sysroot --enable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib --disable-decimal-float --with-gmp=/opt/br-mips64r6-n64-el-hf-2020.02 --with-mpc=/opt/br-mips64r6-n64-el-hf-2020.02 --with-mpfr=/opt/br-mips64r6-n64-el-hf-2020.02 --with-pkgversion='Buildroot 2020.02' --with-bugurl=http://bugs.buildroot.net/ --disable-libquadmath --enable-tls --enable-threads --without-isl --without-cloog --with-arch=mips64r6 --with-abi=64 --with-nan=2008 --enable-languages=c,c++ --with-build-time-tools=/opt/br-mips64r6-n64-el-hf-2020.02/mips64el-buildroot-linux-gnu/bin --enable-shared --disable-libgomp Thread model: posix gcc version 8.3.0 (Buildroot 2020.02) Signed-off-by: Bernd Kuhls <[email protected]>
--- a/build/arch.mk
+++ b/build/arch.mk
@@ -41,7 +41,7 @@
ifeq ($(ENABLE_MMI), Yes)
ENABLE_MMI = $(shell $(SRC_PATH)build/mips-simd-check.sh $(CC) mmi)
ifeq ($(ENABLE_MMI), Yes)
-CFLAGS += -DHAVE_MMI -Wa,-mloongson-mmi,-mloongson-ext
+CFLAGS += -DHAVE_MMI -march=loongson3a
endif
endif
#msa
--- a/build/mips-simd-check.sh
+++ b/build/mips-simd-check.sh
@@ -15,7 +15,7 @@
if [ $2 == "mmi" ]
then
echo "void main(void){ __asm__ volatile(\"punpcklhw \$f0, \$f0, \$f0\"); }" > $TMPC- $1 -Wa,-mloongson-mmi $TMPC -o $TMPO &> /dev/null
+ $1 -march=loongson3a $TMPC -o $TMPO &> /dev/null
if test -s $TMPO
then
echo "Yes"