Let Clang invoke CloudABI's linker.
Now that CloudABI's target information and header search logic for Clang
has been submitted, the only thing that remains to be done is adding
support for CloudABI's linker.
CloudABI uses Binutils ld, although there is some work to use lld
instead. This means that this code is largely based on what we use on
FreeBSD. There are some exceptions, however:
- Only static linking is performed. CloudABI does not support any
dynamically linked executables.
- CloudABI uses compiler-rt, libc++ and libc++abi unconditionally. Link
in these libraries instead of using libgcc_s, libstdc++, etc.
- We must ensure that the .eh_frame_hdr is present to make C++
exceptions work properly.
Differential Revision: http://reviews.llvm.org/D8250
llvm-svn: 233269
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index bc647d1..9606df6 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -2340,6 +2340,36 @@
return false;
}
+// CloudABI - CloudABI tool chain which can call ld(1) directly.
+
+CloudABI::CloudABI(const Driver &D, const llvm::Triple &Triple,
+ const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+ SmallString<128> P(getDriver().Dir);
+ llvm::sys::path::append(P, "..", getTriple().str(), "lib");
+ getFilePaths().push_back(P.str());
+}
+
+void CloudABI::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) &&
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ SmallString<128> P(getDriver().Dir);
+ llvm::sys::path::append(P, "..", getTriple().str(), "include/c++/v1");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+}
+
+void CloudABI::AddCXXStdlibLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ CmdArgs.push_back("-lc++");
+ CmdArgs.push_back("-lc++abi");
+ CmdArgs.push_back("-lunwind");
+}
+
+Tool *CloudABI::buildLinker() const { return new tools::cloudabi::Link(*this); }
+
/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)