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llvmPackages.compiler-rt: Add flag to force libcompiler-rt.a creation

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See the code comments for details

Also replace a bad hard-coded `freebsd` with a flexible `*` wildcard in
the `doFakeLibgcc` implementation.
This commit is contained in:
John Ericson 2024-05-16 10:48:29 -04:00
parent d0b08ab5de
commit ad6fa01c06
1 changed files with 14 additions and 1 deletions
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15
pkgs/development/compilers/llvm/common/compiler-rt/default.nix
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@ -14,7 +14,18 @@
, libllvm
, linuxHeaders
, libxcrypt
# Some platforms have switched to using compiler-rt, but still want a
# libgcc.a for ABI compat purposes. The use case would be old code that
# expects to link `-lgcc` but doesn't care exactly what its contents
# are, so long as it provides some builtins.
, doFakeLibgcc ? stdenv.hostPlatform.isFreeBSD
# In recent releases, the compiler-rt build seems to produce
# many `libclang_rt*` libraries, but not a single unified
# `libcompiler_rt` library, at least under certain configurations. Some
# platforms stil expect this, however, so we symlink one into place.
, forceLinkCompilerRt ? stdenv.hostPlatform.isOpenBSD
}:
let
@ -149,7 +160,9 @@ stdenv.mkDerivation ({
ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/crtbeginS.o
ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/crtendS.o
'' + lib.optionalString doFakeLibgcc ''
ln -s $out/lib/freebsd/libclang_rt.builtins-*.a $out/lib/libgcc.a
ln -s $out/lib/*/libclang_rt.builtins-*.a $out/lib/libgcc.a
'' + lib.optionalString forceLinkCompilerRt ''
ln -s $out/lib/*/libclang_rt.builtins-*.a $out/lib/libcompiler_rt.a
'';
meta = llvm_meta // {