Package: libperl5.34 Version: 5.34.0-3 Severity: normal X-Debbugs-Cc: sedat.di...@gmail.com
Dear Maintainer, when building perf tool out of the Linux-kernel sources tree we see build-errors with Clang. When using Debian's perl-5.34 we need to add -Wno-compound-token-split-by-macro as compiler-flag. This is due to -Werror is set explicitly. For details see [1] and [2]. I hit the issue in combination with Debian's LLVM/Clang v14. There are two commits from upstream fixing the issue. "skip using gcc brace groups for STMT_START/END" https://github.com/Perl/perl5/commit/7169efc77525df70484a824bff4ceebd1fafc760 "Partially Revert "skip using gcc brace groups for STMT_START/END"" https://github.com/Perl/perl5/commit/e08ee3cb66f362c4901846a46014cfdfcd60326c Latest perl v5.34.1 seems not to have these changes: https://github.com/Perl/perl5/compare/v5.34.0...v5.34.1 To summarize the total diff of above 2 commits is related to perl.h header-file only: # git diff /usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h.orig /usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h diff --git a/usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h.orig b/usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h index 17a21a1c4..bd575fe08 100644 --- a/usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h.orig +++ b/usr/lib/x86_64-linux-gnu/perl/5.34.0/CORE/perl.h @@ -733,13 +733,8 @@ Example usage: Trying to select a version that gives no warnings... */ #if !(defined(STMT_START) && defined(STMT_END)) -# ifdef PERL_USE_GCC_BRACE_GROUPS -# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */ -# define STMT_END ) -# else # define STMT_START do # define STMT_END while (0) -# endif #endif #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */ With this diff applied and removing -Wno-compound-token-split-by-macro as compiler-flag I am able to build perf tool successfully with LLVM-14. For the records: These 2 patches against Linux-kernel from [2] are needed: 1. tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts 2. tools build: Filter out options and warnings not supported by clang Can you please apply the perl.h diff? Thanks. Regards, - Sedat - [1] https://marc.info/?t=164911172300004&r=1&w=2 [2] https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/log/?h=tmp.perf/urgent -- System Information: Debian Release: bookworm/sid APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'testing'), (500, 'stable'), (99, 'buildd-unstable'), (99, 'buildd-experimental'), (99, 'experimental'), (99, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 5.17.1-6-amd64-clang14-lto (SMP w/4 CPU threads; PREEMPT) Kernel taint flags: TAINT_UNSIGNED_MODULE Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages libperl5.34 depends on: ii libbz2-1.0 1.0.8-5 ii libc6 2.33-7 ii libcrypt1 1:4.4.27-1.1 ii libdb5.3 5.3.28+dfsg1-0.8 ii libgdbm-compat4 1.23-1 ii libgdbm6 1.23-1 ii perl-modules-5.34 5.34.0-3 ii zlib1g 1:1.2.11.dfsg-4 libperl5.34 recommends no packages. Versions of packages libperl5.34 suggests: ii sensible-utils 0.0.17 -- no debconf information
