When UefiCpuPkg/MpInitLib is built for X64 with gcc-7, using the DEBUG build target and the GCC5 toolchain settings, a C-language assignment is miscompiled such that the initial AP startup hangs in CpuMpPei (X64) or CpuDxe (Ia32X64). See <https://bugzilla.tianocore.org/show_bug.cgi?id=671> for a detailed analysis of the symptoms, and for mailing list links.
This issue has been reported several times (one example is <https://bugzilla.tianocore.org/show_bug.cgi?id=657>). Until we (or the upstream gcc developers) figure out how to dissuade gcc-7 from the miscompilation, pick the GCC49 toolchain in "build.sh" for gcc-7.*. Cc: Alex Williamson <[email protected]> Cc: Jordan Justen <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <[email protected]> --- OvmfPkg/build.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/OvmfPkg/build.sh b/OvmfPkg/build.sh index 682155202564..5868d3b8c498 100755 --- a/OvmfPkg/build.sh +++ b/OvmfPkg/build.sh @@ -102,7 +102,7 @@ case `uname` in 4.8.*) TARGET_TOOLS=GCC48 ;; - 4.9.*|6.[0-2].*) + 4.9.*|6.[0-2].*|7.*) TARGET_TOOLS=GCC49 ;; *) -- 2.14.1.3.gb7cf6e02401b _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
