Hi Everyone,
I have an Ubuntu 9.04 system that I've installed gcc-4.5.1 on, using an in-tree
build of gmp, mpfr, mpc, and libelf.
lu...@node:~$ gcc-4.5.1 -v
Using built-in specs.
COLLECT_GCC=gcc-4.5.1
COLLECT_LTO_WRAPPER=/home/luked/local/libexec/gcc/x86_64-unknown-linux-gnu/4.5.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/home/luked/local --enable-lto
--enable-plugin --enable-multilib --program-suffix=-4.5.1
Thread model: posix
gcc version 4.5.1 (GCC)
I'm evaluating the plugin interface for an academic project, but I have the
following compilation problem. The test I am using is:
lu...@node:~$ cat test.cxx
extern "C" {
#include "gcc-plugin.h"
}
This compiles fine without "-pedantic":
lu...@node:~$ g++-4.5.1 -I`g++-4.5.1 -print-file-name=plugin`/include -c
test.cxx
But adding "-pedantic" results in an error due to a function type mismatch for
getopt.
lu...@node:~$ g++-4.5.1 -I`g++-4.5.1 -print-file-name=plugin`/include
-pedantic -c test.cxx
In file included from
/home/luked/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/plugin/include/gcc-plugin.h:28:0,
from test.cxx:2:
/home/luked/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/plugin/include/system.h:382:53:
error: declaration of ‘int getopt(int, char* const*, const char*)’ throws
different exceptions
/usr/include/getopt.h:152:12: error: from previous declaration ‘int
getopt(int, char* const*, const char*) throw ()’
The plugin/include/system.h does indeed declare getopt without the throw().
luked@:~$ sed -n 380,384p
/home/luked/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/plugin/include/system.h
#if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
extern int getopt (int, char * const *, const char *);
#endif
And my auto-conf.h declares HAVE_DECL_GETOPT 0.
lu...@node:~$ sed -n 679,683p
/home/luked/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/plugin/include/auto-host.h
/* Define to 1 if we found a declaration for 'getopt', otherwise define to 0.
*/
#ifndef USED_FOR_TARGET
#define HAVE_DECL_GETOPT 0
#endif
I don't know what "USED_FOR_TARGET" means, but it isn't defined anywhere inside
of the plugin.
lu...@node1x4x2a:~/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/plugin$ grep
-r USED_FOR_TARGET * | uniq
include/config/i386/i386.h:#ifndef USED_FOR_TARGET
include/auto-host.h:#ifndef USED_FOR_TARGET
include/tm.h:#if defined IN_GCC && !defined GENERATOR_FILE && !defined
USED_FOR_TARGET
include/coretypes.h:#ifndef USED_FOR_TARGET
Does this seem like a configuration bug that I should report, or is it more
likely that there's something wrong with my system?
Thanks,
Luke
