On Fri, 12 Sep 2025 13:44:04 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 three additional > commits since the last revision: > > - Call AC_MSG_RESULT([$AVAILABLE]) inside AC_COMPILE_IFELSE > - Use CC directly > - Move comment from called to macro definition Tested: - [x] 1. linux-aarch64 gcc-10 as-2.37, inlcude release build and fastdebug build - [x] 2. linux-aarch64 gcc-10 as-2.30 - [x] 3. linux-aarch64 gcc-12 as-2.38, inlcude release build and fastdebug build - [x] 4. linux-x64 ------------- PR Comment: https://git.openjdk.org/jdk/pull/27073#issuecomment-3285420885
