diff options
Diffstat (limited to 'packages/glibc/2.39/0001-aarch64-configure-Pass-mcpu-along-with-march-to-dete.patch')
| -rw-r--r-- | packages/glibc/2.39/0001-aarch64-configure-Pass-mcpu-along-with-march-to-dete.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/packages/glibc/2.39/0001-aarch64-configure-Pass-mcpu-along-with-march-to-dete.patch b/packages/glibc/2.39/0001-aarch64-configure-Pass-mcpu-along-with-march-to-dete.patch new file mode 100644 index 00000000..24c925b0 --- /dev/null +++ b/packages/glibc/2.39/0001-aarch64-configure-Pass-mcpu-along-with-march-to-dete.patch @@ -0,0 +1,49 @@ +From 68d57fd288c47c3cec7b94e2b4f863e6b216d69d Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Fri, 4 Aug 2023 09:34:50 -0700 +Subject: [PATCH 2/2] aarch64/configure: Pass -mcpu along with -march to detect + sve support + +SVE support logic in configure is rightly passing -march=<arch>+sve to +compiler to override whatever user might have passed via environment, +however GCC does not do as intended when -mcpu is part of environment +compiler flags, then it overrides the -march computed from -mcpu and +igonores other -march values so this test fails for lot of aarch64 +machines which pass -mcpu that does not support sve. This is seemingly a +bug in GCC [1], until that is fixed we preempt -mcpu along with -march +in the configure test itself. It does not change functionality and yet +lets us through the GCC inconsistency. + +[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110901 + +Upstream-Status: Inappropriate [Workaround for a GCC issue] +Signed-off-by: Khem Raj <raj.khem@gmail.com> + +Signed-off-by: Khem Raj <raj.khem@gmail.com> +--- + sysdeps/aarch64/configure | 2 +- + sysdeps/aarch64/configure.ac | 2 +- + 2 files changed, 2 insertions(+), 2 deletions(-) + +--- a/sysdeps/aarch64/configure ++++ b/sysdeps/aarch64/configure +@@ -327,7 +327,7 @@ + cat > conftest.s <<\EOF + ptrue p0.b + EOF +-if { ac_try='${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&5' ++if { ac_try='${CC-cc} -c -mcpu=generic+sve -march=armv8.2-a+sve conftest.s 1>&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? +--- a/sysdeps/aarch64/configure.ac ++++ b/sysdeps/aarch64/configure.ac +@@ -92,7 +92,7 @@ + cat > conftest.s <<\EOF + ptrue p0.b + EOF +-if AC_TRY_COMMAND(${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&AS_MESSAGE_LOG_FD); then ++if AC_TRY_COMMAND(${CC-cc} -c -mcpu=generic+sve -march=armv8.2-a+sve conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_aarch64_sve_asm=yes + else + libc_cv_aarch64_sve_asm=no |