commit: 96ddadb40ddba1bfdba68ff8f2fd889cfd004f03 Author: Michał Górny <mgorny <AT> gentoo <DOT> org> AuthorDate: Fri Oct 7 15:22:01 2022 +0000 Commit: Michał Górny <mgorny <AT> gentoo <DOT> org> CommitDate: Mon Oct 10 20:52:35 2022 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=96ddadb4
toolchain-funcs.eclass: Add tc-get-c-rtlib() to get CC runtime Add a new tc-get-c-rtlib() that attempts to get the runtime used by the current C compiler. Currently it supports compiler-rt and libgcc. Signed-off-by: Michał Górny <mgorny <AT> gentoo.org> eclass/tests/toolchain-funcs.sh | 10 ++++++++++ eclass/toolchain-funcs.eclass | 28 ++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/eclass/tests/toolchain-funcs.sh b/eclass/tests/toolchain-funcs.sh index 5a35a44ce018..d8a357fb24fe 100755 --- a/eclass/tests/toolchain-funcs.sh +++ b/eclass/tests/toolchain-funcs.sh @@ -202,6 +202,10 @@ if type -P gcc &>/dev/null; then tbegin "tc-get-cxx-stdlib (gcc)" [[ $(CXX=g++ tc-get-cxx-stdlib) == libstdc++ ]] tend $? + + tbegin "tc-get-c-rtlib (gcc)" + [[ $(CC=gcc tc-get-c-rtlib) == libgcc ]] + tend $? fi if type -P clang &>/dev/null; then @@ -218,6 +222,12 @@ if type -P clang &>/dev/null; then tbegin "tc-get-cxx-stdlib (clang, invalid)" ! CXX=clang++ CXXFLAGS="-stdlib=invalid" tc-get-cxx-stdlib tend $? + + for rtlib in compiler-rt libgcc; do + tbegin "tc-get-c-rtlib (clang, ${rtlib})" + [[ $(CC=clang CFLAGS="--rtlib=${rtlib}" tc-get-c-rtlib) == ${rtlib} ]] + tend $? + done fi texit diff --git a/eclass/toolchain-funcs.eclass b/eclass/toolchain-funcs.eclass index 92494158201e..32e446cb2368 100644 --- a/eclass/toolchain-funcs.eclass +++ b/eclass/toolchain-funcs.eclass @@ -1209,4 +1209,32 @@ tc-get-cxx-stdlib() { return 0 } +# @FUNCTION: tc-get-c-rtlib +# @DESCRIPTION: +# Attempt to identify the runtime used by the C/C++ compiler. +# If the runtime is identifed, the function returns 0 and prints one +# of the following: +# +# - ``compiler-rt`` for ``sys-libs/compiler-rt`` +# - ``libgcc`` for ``sys-devel/gcc``'s libgcc +# +# If the runtime is not recognized, the function returns 1. +tc-get-c-rtlib() { + local res=$( + $(tc-getCC) ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} \ + -print-libgcc-file-name 2>/dev/null + ) + + case ${res} in + *libclang_rt*) + echo compiler-rt;; + *libgcc*) + echo libgcc;; + *) + return 1;; + esac + + return 0 +} + fi