[PATCH] D58326: [Driver][Gnu] Support -nolibc flag

[Petr Hosek via Phabricator via llvm-commits]

This revision was not accepted when it landed; it landed in state "Needs Review".
This revision was automatically updated to reflect the committed changes.
Closed by commit rL354210: [Driver][Gnu] Support -nolibc flag (authored by phosek, committed by ).
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Changed prior to commit:
  https://reviews.llvm.org/D58326?vs=187151&id=187152#toc

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58326/new/

https://reviews.llvm.org/D58326

Files:
  cfe/trunk/lib/Driver/ToolChains/Gnu.cpp
  cfe/trunk/test/Driver/nodefaultlib.c
  cfe/trunk/test/Driver/nolibc.c


Index: cfe/trunk/test/Driver/nodefaultlib.c
===================================================================
--- cfe/trunk/test/Driver/nodefaultlib.c
+++ cfe/trunk/test/Driver/nodefaultlib.c
@@ -1,4 +1,4 @@
-// RUN: %clang -target i686-pc-linux-gnu -### -nodefaultlibs %s 2>&1 | FileCheck -check-prefix=TEST1 %s
+// RUN: %clang -target i686-pc-linux-gnu -### -rtlib=libgcc -nodefaultlibs %s 2>&1 | FileCheck -check-prefix=TEST1 %s
 // TEST1-NOT: start-group
 // TEST1-NOT: "-lgcc"
 // TEST1-NOT: "-lc"
Index: cfe/trunk/test/Driver/nolibc.c
===================================================================
--- cfe/trunk/test/Driver/nolibc.c
+++ cfe/trunk/test/Driver/nolibc.c
@@ -0,0 +1,5 @@
+// RUN: %clang -target i686-pc-linux-gnu -### -rtlib=libgcc -nolibc %s 2>&1 | FileCheck %s
+// CHECK: crtbegin
+// CHECK: "-lgcc"
+// CHECK-NOT: "-lc"
+// CHECK: crtend
Index: cfe/trunk/lib/Driver/ToolChains/Gnu.cpp
===================================================================
--- cfe/trunk/lib/Driver/ToolChains/Gnu.cpp
+++ cfe/trunk/lib/Driver/ToolChains/Gnu.cpp
@@ -518,7 +518,8 @@
       if (Args.hasArg(options::OPT_fsplit_stack))
         CmdArgs.push_back("--wrap=pthread_create");
 
-      CmdArgs.push_back("-lc");
+      if (!Args.hasArg(options::OPT_nolibc))
+        CmdArgs.push_back("-lc");
 
       // Add IAMCU specific libs, if needed.
       if (IsIAMCU)


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