[Bug c/37973] New: -MM fails with when used with -combine

[Bug c/37973] New: -MM fails with when used with -combine

[jdybnis at gmail dot com]

> echo > x1.c
> echo > x2.c
> gcc -combine -MM x1.c x2.c
cc1: error: too many filenames given.  Type cc1 --help for usage
> gcc -combine -MM -save-temps x1.c x2.c
i686-apple-darwin9-gcc-4.2.1: internal gcc abort in main, at
/var/tmp/gcc_42/gcc_42-5564~1/src/gcc/gcc.c:6967

>gcc -v -combine -MM x1.c x2.c
Using built-in specs.
Target: i686-apple-darwin9
Configured with: /var/tmp/gcc_42/gcc_42-5564~1/src/configure --disable-checking
--enable-werror --prefix=/usr --mandir=/usr/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.2/
--with-gxx-include-dir=/usr/include/c++/4.0.0 --with-slibdir=/usr/lib
--build=i686-apple-darwin9 --host=i686-apple-darwin9
--target=i686-apple-darwin9
Thread model: posix
gcc version 4.2.1 (Apple Inc. build 5564)
 /usr/libexec/gcc/i686-apple-darwin9/4.2.1/cc1 -E -quiet -v -MM -D__DYNAMIC__
x1.c x2.c -fPIC -mmacosx-version-min=10.5.5 -mtune=core2
ignoring nonexistent directory
"/usr/lib/gcc/i686-apple-darwin9/4.2.1/../../../../i686-apple-darwin9/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/lib/gcc/i686-apple-darwin9/4.2.1/include
 /usr/include
 /System/Library/Frameworks (framework directory)
 /Library/Frameworks (framework directory)
End of search list.
cc1: error: too many filenames given.  Type cc1 --help for usage


-- 
           Summary: -MM fails with when used with -combine
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jdybnis at gmail dot com
 GCC build triplet: i686-apple-darwin9
  GCC host triplet: i686-apple-darwin9
GCC target triplet: i686-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37973

[Bug c/37973] -MM fails with when used with -combine

[tromey at gcc dot gnu dot org]

------- Comment #1 from tromey at gcc dot gnu dot org  2009-03-30 01:15 -------
This is not really a bug.  I don't think -MM is intended to work
with -combine.
This restriction should be documented, though.


-- 

tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-03-30 01:15:49
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37973

[Bug c/37973] Document that -MM and -combine don't mix

[ohnobinki at ohnopublishing dot net]

------- Comment #2 from ohnobinki at ohnopublishing dot net  2010-04-09 01:17 -------
(In reply to comment #1)
> This is not really a bug.  I don't think -MM is intended to work
> with -combine.
-combine's existing documentation would make it seem that gcc should call cc1
multiple times, once for each file, because it's in a situation where the
underlying processor does not support multiple files at a time. This would be
analogous to -combine being automatically disabled when a language other than C
is being compiled.


-- 

ohnobinki at ohnopublishing dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ohnobinki at ohnopublishing
                   |                            |dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37973

[Bug c/37973] Document that -MM and -combine don't mix

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2010-09-17 09:06 -------
-combine has been removed from GCC 4.6 in favor of LTO, closing as WONTFIX.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37973