On Wed, 10 Sep 2025 09:38:59 GMT, SendaoYan <s...@openjdk.org> wrote:
>> Hi all, >> >> Build jdk on linux-aarch64 with older assembler version(as 2.30) will report >> compilation failre, shows as >> [JDK-8366777](https://bugs.openjdk.org/browse/JDK-8366777). >> >> This PR add the expression `svfloat64_t a() {}` to makefile which will >> trigger the compilation during configure stage. After this PR, at configure >> stage will check the gcc and assember support `-march=armv8-a+sve` or not >> more comprehensive. >> >> Testing: >> - [x] On linux-aarch64 gcc12.3.1 as2.37, configure set SVE_CFLAGS as >> '-march=armv8-a+sve' >> - [x] On linux-aarch64 gcc10.3.0 as2.30, configure set SVE_CFLAGS as empty >> >> >> The compilation fails demo as below: >> >> >> # cat sve.c >> #include <arm_sve.h> >> svfloat64_t a() {} >> # gcc -march=armv8-a+sve sve.c >> /tmp/ccVOzMzb.s: Assembler messages: >> /tmp/ccVOzMzb.s:6: Error: unknown pseudo-op: `.variant_pcs' > > SendaoYan has updated the pull request incrementally with one additional > commit since the last revision: > > Include the prefix argument when calling FLAGS_COMPILER_CHECK_ARGUMENTS GHA job [linux-cross-compile / build (aarch64)](https://github.com/sendaoYan/jdk-ysd/actions/runs/17609624612/job/50028351829#logs) fails: configure:178281: /usr/bin/cc -c -march=armv8-a+sve -Werror -ffp-contract=off --sysroot=/home/runner/work/jdk-ysd/jdk-ysd/sysroot conftest.c >&5 cc1: error: bad value (‘armv8-a+sve’) for ‘-march=’ switch cc1: note: valid arguments to ‘-march=’ switch are: nocona core2 nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell core-avx2 broadwell skylake skylake-avx512 cannonlake icelake-client icelake-server cascadelake tigerlake cooperlake bonnell atom silvermont slm goldmont goldmont-plus tremont knl knm x86-64 x86-64-v2 x86-64-v3 x86-64-v4 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 nano-x4 k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 athlon-fx amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 znver2 znver3 btver1 btver2 native /usr/bin/cc is native compiler. ------------- PR Comment: https://git.openjdk.org/jdk/pull/27073#issuecomment-3274916747
