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authorMichał Górny <mgorny@gentoo.org>2017-11-10 23:41:55 +0100
committerMichał Górny <mgorny@gentoo.org>2018-08-09 13:52:57 +0200
commit5c01167303f7baaec381a4a85ad5f4f3ca16c3c6 (patch)
tree811ee9ef92066ef3c024d33127757e66b7b2776d /sys-devel/llvm
parentgames-arcade/methane: Drop comments (diff)
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sys-devel/llvm: Add custom SOVERSION suffix when linking to libc++
Diffstat (limited to 'sys-devel/llvm')
-rw-r--r--sys-devel/llvm/llvm-9999.ebuild21
1 files changed, 21 insertions, 0 deletions
diff --git a/sys-devel/llvm/llvm-9999.ebuild b/sys-devel/llvm/llvm-9999.ebuild
index 612f8a07e7b..d5404d204a0 100644
--- a/sys-devel/llvm/llvm-9999.ebuild
+++ b/sys-devel/llvm/llvm-9999.ebuild
@@ -89,6 +89,18 @@ src_prepare() {
cmake-utils_src_prepare
}
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+ local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+ HAVE_LIBCXX
+#endif
+'
+ local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+
+ [[ ${out} == *HAVE_LIBCXX* ]]
+}
+
multilib_src_configure() {
local ffi_cflags ffi_ldflags
if use libffi; then
@@ -132,6 +144,15 @@ multilib_src_configure() {
-DOCAMLFIND=NO
)
+ if is_libcxx_linked; then
+ # Smart hack: alter version suffix -> SOVERSION when linking
+ # against libc++. This way we won't end up mixing LLVM libc++
+ # libraries with libstdc++ clang, and the other way around.
+ mycmakeargs+=(
+ -DLLVM_VERSION_SUFFIX="libcxx"
+ )
+ fi
+
# Note: go bindings have no CMake rules at the moment
# but let's kill the check in case they are introduced
# if ! multilib_is_native_abi || ! use go; then