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Build with LTO

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Resolves: rhbz#2188418
This commit is contained in:
Nikita Popov 2023-05-05 14:55:51 +02:00
parent 47aa2a71fc
commit 5df215a555
1 changed files with 15 additions and 4 deletions
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19
clang.spec
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@ -45,7 +45,7 @@
Name: %pkg_name Name: %pkg_name
Version: %{clang_version}%{?rc_ver:~rc%{rc_ver}} Version: %{clang_version}%{?rc_ver:~rc%{rc_ver}}
Release: 3%{?dist} Release: 4%{?dist}
Summary: A C language family front-end for LLVM Summary: A C language family front-end for LLVM
License: Apache-2.0 WITH LLVM-exception OR NCSA License: Apache-2.0 WITH LLVM-exception OR NCSA
@ -324,14 +324,17 @@ rm test/CodeGen/profile-filter.c
%build %build
%define _lto_cflags %{nil}
%if 0%{?__isa_bits} == 64 %if 0%{?__isa_bits} == 64
sed -i 's/\@FEDORA_LLVM_LIB_SUFFIX\@/64/g' test/lit.cfg.py sed -i 's/\@FEDORA_LLVM_LIB_SUFFIX\@/64/g' test/lit.cfg.py
%else %else
sed -i 's/\@FEDORA_LLVM_LIB_SUFFIX\@//g' test/lit.cfg.py sed -i 's/\@FEDORA_LLVM_LIB_SUFFIX\@//g' test/lit.cfg.py
%endif %endif
%ifarch %ix86
# Linking libclang.so goes out of memory even with ThinLTO and a single link job.
%global _lto_cflags %nil
%endif
%ifarch s390 s390x %{arm} aarch64 %ix86 ppc64le %ifarch s390 s390x %{arm} aarch64 %ix86 ppc64le
# Decrease debuginfo verbosity to reduce memory consumption during final library linking # Decrease debuginfo verbosity to reduce memory consumption during final library linking
%global optflags %(echo %{optflags} | sed 's/-g /-g1 /') %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')
@ -350,6 +353,9 @@ mv ../cmake-%{compat_ver}.src ../cmake
%global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;ARM;Mips;BPF;WebAssembly" %global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;ARM;Mips;BPF;WebAssembly"
# Disable LTO when building the compat libraries. This would perform LTO across all of LLVM and
# Clang, and fails due to "too many open files". We don't particularly care about the performance
# of these compat libraries.
%cmake -S ../llvm-%{compat_ver}.src -B ../clang-compat-libs -G Ninja \ %cmake -S ../llvm-%{compat_ver}.src -B ../clang-compat-libs -G Ninja \
-DLLVM_ENABLE_PROJECTS=clang \ -DLLVM_ENABLE_PROJECTS=clang \
-DCMAKE_BUILD_TYPE=Release \ -DCMAKE_BUILD_TYPE=Release \
@ -358,7 +364,9 @@ mv ../cmake-%{compat_ver}.src ../cmake
-DLLVM_ENABLE_RTTI:BOOL=ON \ -DLLVM_ENABLE_RTTI:BOOL=ON \
-DCMAKE_SKIP_RPATH:BOOL=ON \ -DCMAKE_SKIP_RPATH:BOOL=ON \
-DLLVM_TARGETS_TO_BUILD=%{targets_to_build} \ -DLLVM_TARGETS_TO_BUILD=%{targets_to_build} \
-DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF \
-DCMAKE_C_FLAGS_RELEASE="-fno-lto" \
-DCMAKE_CXX_FLAGS_RELEASE="-fno-lto"
%ninja_build -C ../clang-compat-libs libclang.so %ninja_build -C ../clang-compat-libs libclang.so
%ninja_build -C ../clang-compat-libs libclang-cpp.so %ninja_build -C ../clang-compat-libs libclang-cpp.so
@ -678,6 +686,9 @@ mv ./libclang-cpp.so.%{compat_maj_ver} "$compat_lib"
%endif %endif
%changelog %changelog
* Fri Jun 02 2023 Nikita Popov <npopov@redhat.com> - 16.0.1-4
- Build with LTO
* Thu May 25 2023 Nikita Popov <npopov@redhat.com> - 16.0.1-3 * Thu May 25 2023 Nikita Popov <npopov@redhat.com> - 16.0.1-3
- Use ld from gcc-toolset - Use ld from gcc-toolset