diff options
Diffstat (limited to 'scripts/build/arch/sparc.sh')
| -rw-r--r-- | scripts/build/arch/sparc.sh | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/scripts/build/arch/sparc.sh b/scripts/build/arch/sparc.sh index 74f6f78..22d98e4 100644 --- a/scripts/build/arch/sparc.sh +++ b/scripts/build/arch/sparc.sh @@ -3,17 +3,32 @@ CT_DoArchTupleValues() { # That's the only thing to override CT_TARGET_ARCH="sparc${target_bits_64}${CT_ARCH_SUFFIX}" - # By default, sparc64-*-linux is configured with -mcpu=v9. However, - # according to https://sourceware.org/ml/libc-alpha/2005-12/msg00027.html, - # "There is no Linux sparc64 port that runs on non-UltraSPARC-I+ ISA CPUs." - # There is a patch that would change the default to -mcpu=ultrasparc for - # sparc64-*-linux configuration: https://patchwork.ozlabs.org/patch/409424/ - # but that patch has not been integrated (yet). One concern raised about - # this patch was that -mcpu=ultrasparc can suboptimally schedule instructions - # for newer SPARC CPUs. So, override to -mcpu=ultrasparc and warn the user. - if [ "${CT_KERNEL}" = "linux" -a "${CT_ARCH_64}" = "y" -a -z "${CT_ARCH_CPU}" ]; then - CT_DoLog WARN "Setting CPU to UltraSPARC-I for sparc64-linux. Set CT_ARCH_CPU if a different CPU is desired." - CT_ARCH_WITH_CPU="--with-cpu=ultrasparc" + if [ "${CT_KERNEL}" = "linux" -a -z "${CT_ARCH_CPU}" ]; then + if [ "${CT_ARCH_64}" = "y" ]; then + # By default, sparc64-*-linux is configured with -mcpu=v9. However, + # according to https://sourceware.org/ml/libc-alpha/2005-12/msg00027.html, + # "There is no Linux sparc64 port that runs on non-UltraSPARC-I+ ISA CPUs." + # There is a patch that would change the default to -mcpu=ultrasparc for + # sparc64-*-linux configuration: https://patchwork.ozlabs.org/patch/409424/ + # but that patch has not been integrated (yet). One concern raised about + # this patch was that -mcpu=ultrasparc can suboptimally schedule instructions + # for newer SPARC CPUs. So, override to -mcpu=ultrasparc and warn the user. + CT_DoLog WARN "Setting CPU to UltraSPARC-I for sparc64-linux. Set CT_ARCH_CPU if a different CPU is desired." + CT_ARCH_WITH_CPU="--with-cpu=ultrasparc" + if [ -n "${CT_ARCH_SUPPORTS_WITH_32_64}" -a -n "${CT_MULTILIB}" ]; then + CT_ARCH_WITH_CPU_32="--with-cpu-32=ultrasparc" + CT_ARCH_WITH_CPU_64="--with-cpu-64=ultrasparc" + fi + else + # Similarly, sparc-*-linux defaults to v7. GLIBC 2.31 started to reject + # pre-v8 configurations with 2.31, and default v8 fails a subsequent test for + # using atomics (which are presumably, only available on some v8 CPUs). + # Therefore, default to v9. + if [ -z "${CT_GLIBC_SPARC_ALLOW_V7}" ]; then + CT_DoLog WARN "Setting CPU to V9 for sparc-linux. Set CT_ARCH_CPU if a different CPU is desired." + CT_ARCH_WITH_CPU="--with-cpu=v9" + fi + fi fi } @@ -60,8 +75,8 @@ CT_DoArchGlibcAdjustTuple() { # earlier (corresponding pthread barrier code is missing). Until this # support is reintroduced, configure as sparcv9. sparc-*) - if [ "${CT_LIBC_GLIBC_2_23_or_later}" = y ]; then - CT_DoLog WARN "GLIBC 2.23 only supports SPARCv9" + if [ "${CT_GLIBC_NO_SPARC_V8}" = y ]; then + CT_DoLog WARN "GLIBC 2.23 and newer only support SPARCv9" target_=${target_/#sparc-/sparcv9-} fi ;; |