commit 3d7da810e4a6e1ade2c0d649f17f8aa820248765
author Brad Smith <brad@comstyle.com> Thu Apr 28 00:17:48 2022 -0400
committer Brad Smith <brad@comstyle.com> Thu Apr 28 00:19:45 2022 -0400
tree 8521d7509916b5d7a98a57fdf6ab83f45bcd570f
parent 35f38583d2f2484794f579bed69566b40e732206

[Driver][Solaris] -r: imply -nostdlib like GCC

Similar to D116843 for Gnu.cpp

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D124356

clang/lib/Driver/ToolChains/Solaris.cpp

diff --git a/clang/lib/Driver/ToolChains/Solaris.cpp b/clang/lib/Driver/ToolChains/Solaris.cpp
index 2d40598..c75375a 100644
--- a/clang/lib/Driver/ToolChains/Solaris.cpp
+++ b/clang/lib/Driver/ToolChains/Solaris.cpp
@@ -84,7 +84,8 @@
     assert(Output.isNothing() && "Invalid output.");
   }
 
-  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
+  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
+                   options::OPT_r)) {
     if (!Args.hasArg(options::OPT_shared))
       CmdArgs.push_back(
           Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
@@ -124,7 +125,8 @@
   bool NeedsSanitizerDeps = addSanitizerRuntimes(getToolChain(), Args, CmdArgs);
   AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
 
-  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
+  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
+                   options::OPT_r)) {
     if (getToolChain().ShouldLinkCXXStdlib(Args))
       getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
     if (Args.hasArg(options::OPT_fstack_protector) ||
@@ -161,11 +163,13 @@
     }
   }
 
-  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
+  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
+                   options::OPT_r)) {
     CmdArgs.push_back(
         Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
+    CmdArgs.push_back(
+        Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
   }
-  CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
 
   getToolChain().addProfileRTLibs(Args, CmdArgs);
 

clang/test/Driver/solaris-ld.c

diff --git a/clang/test/Driver/solaris-ld.c b/clang/test/Driver/solaris-ld.c
index d40e5da..57b2b1b 100644
--- a/clang/test/Driver/solaris-ld.c
+++ b/clang/test/Driver/solaris-ld.c
@@ -108,3 +108,13 @@
 // CHECK-SPARC32-SHARED-SAME: "-lc"
 // CHECK-SPARC32-SHARED-NOT: "-lgcc"
 // CHECK-SPARC32-SHARED-NOT: "-lm"
+
+// -r suppresses default -l and crt*.o, values-*.o like -nostdlib.
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o \
+// RUN:     --target=sparc-sun-solaris2.11 -r 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-RELOCATABLE
+// CHECK-RELOCATABLE:     "-L
+// CHECK-RELOCATABLE:     "-r"
+// CHECK-RELOCATABLE-NOT: "-l
+// CHECK-RELOCATABLE-NOT: {{.*}}crt{{[^.]+}}.o
+// CHECK-RELOCATABLE-NOT: {{.*}}values-{{[^.]+}}.o