commit: 463ec5b25ac36933127e726c553ad83994017aa1
Author: Manoj Gupta <manojgupta <AT> google <DOT> com>
AuthorDate: Thu Sep 12 11:32:40 2019 +0000
Commit: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Fri Sep 13 18:42:56 2019 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=463ec5b2
toolchain-funcs: Add tc-ld-is-lld helper.
LLD is a new linker for LLVM project.
Add tc-ld-is-lld helper to be able to detect it.
Signed-off-by: Manoj Gupta <manojgupta <AT> google.com>
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>
eclass/toolchain-funcs.eclass | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/eclass/toolchain-funcs.eclass b/eclass/toolchain-funcs.eclass
index 7bd90bb4e4a..e358d484417 100644
--- a/eclass/toolchain-funcs.eclass
+++ b/eclass/toolchain-funcs.eclass
@@ -453,6 +453,36 @@ tc-ld-is-gold() {
return 1
}
+# @FUNCTION: tc-ld-is-lld
+# @USAGE: [toolchain prefix]
+# @DESCRIPTION:
+# Return true if the current linker is set to lld.
+tc-ld-is-lld() {
+ local out
+
+ # First check the linker directly.
+ out=$($(tc-getLD "$@") --version 2>&1)
+ if [[ ${out} == *"LLD"* ]] ; then
+ return 0
+ fi
+
+ # Then see if they're selecting lld via compiler flags.
+ # Note: We're assuming they're using LDFLAGS to hold the
+ # options and not CFLAGS/CXXFLAGS.
+ local base="${T}/test-tc-lld"
+ cat <<-EOF > "${base}.c"
+ int main() { return 0; }
+ EOF
+ out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version
"${base}.c" -o "${base}" 2>&1)
+ rm -f "${base}"*
+ if [[ ${out} == *"LLD"* ]] ; then
+ return 0
+ fi
+
+ # No lld here!
+ return 1
+}
+
# @FUNCTION: tc-ld-disable-gold
# @USAGE: [toolchain prefix]
# @DESCRIPTION:
