[PATCH] D110128: [Driver] Correctly handle static C++ standard library

[Petr Hosek via Phabricator via cfe-commits]

phosek updated this revision to Diff 374699.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110128/new/

https://reviews.llvm.org/D110128

Files:
  clang/lib/Driver/ToolChains/Fuchsia.cpp
  clang/lib/Driver/ToolChains/Gnu.cpp
  clang/test/Driver/fuchsia.cpp
  clang/test/Driver/linux-ld.c


Index: clang/test/Driver/linux-ld.c
===================================================================
--- clang/test/Driver/linux-ld.c
+++ clang/test/Driver/linux-ld.c
@@ -496,6 +496,22 @@
 // CHECK-GCC-VERSION1: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-GCC-VERSION1: "{{.*}}/Inputs/basic_linux_tree/usr/lib/gcc/i386-unknown-linux/10.2.0{{/|\\\\}}crtbegin.o"
 
+// RUN: %clangxx -x c++ %s -### 2>&1 \
+// RUN:     --target=x86_64-unknown-linux-gnu \
+// RUN:     -stdlib=libc++ \
+// RUN:   | FileCheck --check-prefix=CHECK-BASIC-LIBCXX-SHARED %s
+// CHECK-BASIC-LIBCXX-SHARED: "-lc++"
+// CHECK-BASIC-LIBCXX-SHARED-SAME: {{^}} "-lm"
+// RUN: %clangxx  -x c++ %s -### 2>&1 \
+// RUN:     --target=x86_64-unknown-linux-gnu \
+// RUN:     -stdlib=libc++ -static-libstdc++ \
+// RUN:   | FileCheck --check-prefix=CHECK-BASIC-LIBCXX-STATIC %s
+// CHECK-BASIC-LIBCXX-STATIC: "--push-state"
+// CHECK-BASIC-LIBCXX-STATIC-SAME: {{^}} "-Bstatic"
+// CHECK-BASIC-LIBCXX-STATIC-SAME: {{^}} "-lc++"
+// CHECK-BASIC-LIBCXX-STATIC-SAME: {{^}} "--pop-state"
+// CHECK-BASIC-LIBCXX-STATIC-SAME: {{^}} "-lm"
+
 // Test a simulated installation of libc++ on Linux, both through sysroot and
 // the installation path of Clang.
 // RUN: %clangxx -no-canonical-prefixes -x c++ %s -### -o %t.o 2>&1 \
Index: clang/test/Driver/fuchsia.cpp
===================================================================
--- clang/test/Driver/fuchsia.cpp
+++ clang/test/Driver/fuchsia.cpp
@@ -34,11 +34,9 @@
 // CHECK-NOT: crti.o
 // CHECK-NOT: crtbegin.o
 // CHECK: "-L[[SYSROOT]]{{/|\\\\}}lib"
-// CHECK: "--push-state"
 // CHECK: "--as-needed"
 // CHECK: "-lc++"
 // CHECK: "-lm"
-// CHECK: "--pop-state"
 // CHECK-X86_64: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-fuchsia{{/|\\\\}}libclang_rt.builtins.a"
 // CHECK-AARCH64: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aarch64-unknown-fuchsia{{/|\\\\}}libclang_rt.builtins.a"
 // CHECK-RISCV64: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}riscv64-unknown-fuchsia{{/|\\\\}}libclang_rt.builtins.a"
@@ -55,12 +53,10 @@
 // RUN:     -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck %s -check-prefix=CHECK-STATIC
 // CHECK-STATIC: "--push-state"
-// CHECK-STATIC: "--as-needed"
 // CHECK-STATIC: "-Bstatic"
 // CHECK-STATIC: "-lc++"
-// CHECK-STATIC: "-Bdynamic"
-// CHECK-STATIC: "-lm"
 // CHECK-STATIC: "--pop-state"
+// CHECK-STATIC: "-lm"
 // CHECK-STATIC: "-lc"
 
 // RUN: %clangxx %s -### --target=x86_64-unknown-fuchsia -nostdlib++ -fuse-ld=lld 2>&1 \
Index: clang/lib/Driver/ToolChains/Gnu.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Gnu.cpp
+++ clang/lib/Driver/ToolChains/Gnu.cpp
@@ -577,11 +577,13 @@
     if (ToolChain.ShouldLinkCXXStdlib(Args)) {
       bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
                                  !Args.hasArg(options::OPT_static);
-      if (OnlyLibstdcxxStatic)
+      if (OnlyLibstdcxxStatic) {
+        CmdArgs.push_back("--push-state");
         CmdArgs.push_back("-Bstatic");
+      }
       ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
       if (OnlyLibstdcxxStatic)
-        CmdArgs.push_back("-Bdynamic");
+        CmdArgs.push_back("--pop-state");
     }
     CmdArgs.push_back("-lm");
   }
Index: clang/lib/Driver/ToolChains/Fuchsia.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -138,14 +138,13 @@
         bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
                                    !Args.hasArg(options::OPT_static);
         CmdArgs.push_back("--push-state");
-        CmdArgs.push_back("--as-needed");
         if (OnlyLibstdcxxStatic)
           CmdArgs.push_back("-Bstatic");
+        else
+          CmdArgs.push_back("--as-needed");
         ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
-        if (OnlyLibstdcxxStatic)
-          CmdArgs.push_back("-Bdynamic");
-        CmdArgs.push_back("-lm");
         CmdArgs.push_back("--pop-state");
+        CmdArgs.push_back("-lm");
       }
     }
 


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