From 27000b14439d22145487f55f8a85eb5f8cc98e30 Mon Sep 17 00:00:00 2001 From: serge-sans-paille Date: Thu, 25 Feb 2021 14:08:28 +0100 Subject: [PATCH 2/6] [PATCH][clang] ToolChain: Add -lgcc_s to the linker flags when using libc++ The libc++ build for Fedora does not include an implementation of libunwind, so we need to explicitly link against something that provides this implementation. --- clang/lib/Driver/ToolChain.cpp | 1 + clang/test/Driver/netbsd.cpp | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp index b2ddef1..c4c71e1 100644 --- a/clang/lib/Driver/ToolChain.cpp +++ b/clang/lib/Driver/ToolChain.cpp @@ -1014,6 +1014,7 @@ void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args, switch (Type) { case ToolChain::CST_Libcxx: CmdArgs.push_back("-lc++"); + CmdArgs.push_back("-lgcc_s"); break; case ToolChain::CST_Libstdcxx: diff --git a/clang/test/Driver/netbsd.cpp b/clang/test/Driver/netbsd.cpp index 4af7d83..ff18c62 100644 --- a/clang/test/Driver/netbsd.cpp +++ b/clang/test/Driver/netbsd.cpp @@ -131,7 +131,7 @@ // ARM-7: clang{{.*}}" "-cc1" "-triple" "armv5e-unknown-netbsd7.0.0-eabi" // ARM-7: ld{{.*}}" "--eh-frame-hdr" "-dynamic-linker" "/libexec/ld.elf_so" // ARM-7: "-o" "a.out" "{{.*}}/usr/lib{{/|\\\\}}crt0.o" "{{.*}}/usr/lib{{/|\\\\}}eabi{{/|\\\\}}crti.o" -// ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o" "{{.*}}.o" "-lc++" "-lm" "-lc" +// ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o" "{{.*}}.o" "-lc++" "-lgcc_s" "-lm" "-lc" // ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtend.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o" // AARCH64: clang{{.*}}" "-cc1" "-triple" "aarch64-unknown-netbsd" @@ -250,7 +250,7 @@ // S-ARM-7: clang{{.*}}" "-cc1" "-triple" "armv5e-unknown-netbsd7.0.0-eabi" // S-ARM-7: ld{{.*}}" "--eh-frame-hdr" "-Bstatic" // S-ARM-7: "-o" "a.out" "{{.*}}/usr/lib{{/|\\\\}}crt0.o" "{{.*}}/usr/lib{{/|\\\\}}eabi{{/|\\\\}}crti.o" -// S-ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o" "{{.*}}.o" "-lc++" "-lm" "-lc" +// S-ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o" "{{.*}}.o" "-lc++" "-lgcc_s" "-lm" "-lc" // S-ARM-7: "{{.*}}/usr/lib{{/|\\\\}}crtend.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o" // S-AARCH64: clang{{.*}}" "-cc1" "-triple" "aarch64-unknown-netbsd" -- 1.8.3.1