[LLVMbugs] [Bug 15666] New: clang does not know Red Hat Linux ARM triplets armv7hl-redhat-linux and armv5tel-redhat-linux

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15666

            Bug ID: 15666
           Summary: clang does not know Red Hat Linux ARM triplets
                    armv7hl-redhat-linux and armv5tel-redhat-linux
           Product: clang
           Version: 3.2
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: petersen at redhat.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Clang on Fedora ARM does not work well because clang does not
recognize the Fedora ARM triplets and fallback to software floating point,
causing build failures like this:

clang: warning: unknown platform, assuming -mfloat-abi=soft
In file included from In file included from fsck_messages.c:25:
In file included from /usr/include/assert.hIn file included from :36cache.c:
:In file included from /usr/include/features.h24::
399In file included from :
/usr/include/errno.h:28/usr/include/gnu/stubs.h:
In file included from :/usr/include/features.h7::39911:
: fatal error: /usr/include/gnu/stubs.h'gnu/stubs-soft.h' file not found:
7:11: fatal error: 'gnu/stubs-soft.h' file not found
# include <gnu/stubs-soft.h># include <gnu/stubs-soft.h>
:

See this Fedora ARM bug:
https://bugzilla.redhat.com/show_bug.cgi?id=803433

Earlier I tried a simple naive patch like:

--- llvm-3.2.src/tools/clang/lib/Driver/ToolChains.cpp~    2012-12-17
00:59:27.000000000 +0900
+++ llvm-3.2.src/tools/clang/lib/Driver/ToolChains.cpp    2013-02-12
19:18:00.755164292 +0900
@@ -1054,10 +1054,12 @@
   static const char *const ARMLibDirs[] = { "/lib" };
   static const char *const ARMTriples[] = {
     "arm-linux-gnueabi",
-    "arm-linux-androideabi"
+    "arm-linux-androideabi",
+    "armv5tel-redhat-linux",
   };
   static const char *const ARMHFTriples[] = {
     "arm-linux-gnueabihf",
+    "armv7hl-redhat-linux",
   };

but it was not sufficient - maybe fixes are also needed to on the llvm side,
perhaps?

(Similarly ppc64-redhat-linux is also not supported.)

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