[John Houck] Bug#271232: AC_F77_LIBRARY_LDFLAGS should ignore -lcrt2.o on Mac OS X

[Ben Pfaff]

Following bug was reported against the Debian packaging of
Autoconf.  It seems like more of an upstream thing to me, because
Debian has little to do with Mac OS X, so I'm passing it along
instead of taking action myself.

-------------------- Start of forwarded message --------------------
From: John Houck <address@hidden>
Date: Sat, 11 Sep 2004 23:36:42 -0400
To: address@hidden
Message-ID: <address@hidden>

Package: autoconf
Version: 2.59-5

When used with g77-3.4.1 on Mac OS X, AC_F77_DUMMY_MAIN()
fails, causing the configure script to halt with an error.

The following one-character patch for fortran.m4 seems to solve
the problem:

--- /usr/share/autoconf/autoconf/fortran.m4     Sun Jun 20 19:43:54 2004
+++ /tmp/fortran.m4     Sat Sep 11 09:27:02 2004
@@ -647,7 +647,7 @@
              [_AC_LINKER_OPTION([$ac_arg], ac_cv_[]_AC_LANG_ABBREV[]_libs)])
           ;;
           # Ignore these flags.
-        -lang* | -lcrt[[01]].o | -lcrtbegin.o | -lc | -lgcc | -libmil | 
-LANG:=*)
+        -lang* | -lcrt[[012]].o | -lcrtbegin.o | -lc | -lgcc | -libmil | 
-LANG:=*)
           ;;
         -lkernel32)
           test x"$CYGWIN" != xyes && 
ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg"

Note that a similar patch (to ignore -lcrt1.o) was applied by
John W. Eaton on 2003-07-25.

This minimal configure.ac file can be used to reproduce the
problem:

AC_INIT(configure)
AC_CANONICAL_HOST
AC_PROG_F77
AC_F77_LIBRARY_LDFLAGS
AC_F77_DUMMY_MAIN(,
  AC_DEFINE(F77_DUMMY_MAIN,MAIN__)
)


Here is the config.log file from a failed run of the resulting
configure script:


This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by configure, which was
generated by GNU Autoconf 2.59.  Invocation command line was

  $ ./configure 

## --------- ##
## Platform. ##
## --------- ##

hostname = xxx.local
uname -m = Power Macintosh
uname -r = 7.5.0
uname -s = Darwin
uname -v = Darwin Kernel Version 7.5.0: Thu Aug  5 19:26:16 PDT 2004; 
root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC 

/usr/bin/uname -p = powerpc
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
hostinfo               = Mach kernel version:
         Darwin Kernel Version 7.5.0:
Thu Aug  5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC


Kernel configured for a single processor only.
1 processor is physically available.
Processor type: ppc7450 (PowerPC 7450)
Processor active: 0
Primary memory available: 512.00 megabytes.
Default processor set: 58 tasks, 126 threads, 1 processors
Load average: 1.76, Mach factor: 0.44
unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /tmp/bin
PATH: /usr/local/bin
PATH: /sw/bin
PATH: /sw/sbin
PATH: /usr/bin
PATH: /bin
PATH: /usr/sbin
PATH: /sbin
PATH: /usr/X11R6/bin


## ----------- ##
## Core tests. ##
## ----------- ##

configure:1290: checking build system type
configure:1308: result: powerpc-apple-darwin7.5.0
configure:1316: checking host system type
configure:1330: result: powerpc-apple-darwin7.5.0
configure:1389: checking for g77
configure:1405: found /usr/local/bin/g77
configure:1415: result: g77
configure:1430: checking for Fortran 77 compiler version
configure:1433: g77 --version </dev/null >&5
GNU Fortran (GCC) 3.4.1
Copyright (C) 2004 Free Software Foundation, Inc.

GNU Fortran comes with NO WARRANTY, to the extent permitted by law.
You may redistribute copies of GNU Fortran
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING
or type the command `info -f g77 Copying'.
configure:1436: $? = 0
configure:1438: g77 -v </dev/null >&5
Reading specs from /usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/specs
Configured with: ../gcc/configure --enable-threads=posix --enable-languages=f77
Thread model: posix
gcc version 3.4.1
configure:1441: $? = 0
configure:1443: g77 -V </dev/null >&5
g77: `-V' option must have argument
configure:1446: $? = 1
configure:1460: checking for Fortran 77 compiler default output file name
configure:1463: g77   conftest.f  >&5
configure:1466: $? = 0
configure:1512: result: a.out
configure:1517: checking whether the Fortran 77 compiler works
configure:1523: ./a.out
configure:1526: $? = 0
configure:1543: result: yes
configure:1550: checking whether we are cross compiling
configure:1552: result: no
configure:1555: checking for suffix of executables
configure:1557: g77 -o conftest   conftest.f  >&5
configure:1560: $? = 0
configure:1585: result: 
configure:1591: checking for suffix of object files
configure:1602: g77 -c  conftest.f >&5
configure:1605: $? = 0
configure:1627: result: o
configure:1635: checking whether we are using the GNU Fortran 77 compiler
configure:1649: g77 -c  conftest.F >&5
configure:1655: $? = 0
configure:1658: test -z                          || test ! -s conftest.err
configure:1661: $? = 0
configure:1664: test -s conftest.o
configure:1667: $? = 0
configure:1680: result: yes
configure:1686: checking whether g77 accepts -g
configure:1698: g77 -c -g conftest.f >&5
configure:1704: $? = 0
configure:1707: test -z                          || test ! -s conftest.err
configure:1710: $? = 0
configure:1713: test -s conftest.o
configure:1716: $? = 0
configure:1728: result: yes
configure:1758: checking how to get verbose linking output from g77
configure:1769: g77 -c -g -O2 conftest.f >&5
configure:1775: $? = 0
configure:1778: test -z                          || test ! -s conftest.err
configure:1781: $? = 0
configure:1784: test -s conftest.o
configure:1787: $? = 0
configure:1804: g77 -o conftest -g -O2 -v  conftest.f  >&5
Reading specs from /usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/specs
Configured with: ../gcc/configure --enable-threads=posix --enable-languages=f77
Thread model: posix
gcc version 3.4.1
 /usr/local/libexec/gcc/powerpc-apple-darwin6.8/3.4.1/f771 conftest.f -fPIC 
-quiet -dumpbase conftest.f -auxbase conftest -g -O2 -version -o 
/var/tmp//cc9fXbo8.s
GNU F77 version 3.4.1 (powerpc-apple-darwin6.8)
        compiled by GNU C version 3.4.1.
GGC heuristics: --param ggc-min-expand=65 --param ggc-min-heapsize=65536
 as -arch ppc -o /var/tmp//ccGUsfd1.o /var/tmp//cc9fXbo8.s
 /usr/local/libexec/gcc/powerpc-apple-darwin6.8/3.4.1/collect2 -arch ppc 
-dynamic -o conftest -lcrt1.o -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. 
/var/tmp//ccGUsfd1.o -lfrtbegin -lg2c -lgcc_s -lgcc -lSystem |
 c++filt
configure:1859: result: -v
configure:1861: checking for Fortran libraries of g77
configure:1882: g77 -o conftest -g -O2 -v  conftest.f  >&5
Reading specs from /usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/specs
Configured with: ../gcc/configure --enable-threads=posix --enable-languages=f77
Thread model: posix
gcc version 3.4.1
 /usr/local/libexec/gcc/powerpc-apple-darwin6.8/3.4.1/f771 conftest.f -fPIC 
-quiet -dumpbase conftest.f -auxbase conftest -g -O2 -version -o 
/var/tmp//ccu5QtiJ.s
GNU F77 version 3.4.1 (powerpc-apple-darwin6.8)
        compiled by GNU C version 3.4.1.
GGC heuristics: --param ggc-min-expand=65 --param ggc-min-heapsize=65536
 as -arch ppc -o /var/tmp//ccdw2JMf.o /var/tmp//ccu5QtiJ.s
 /usr/local/libexec/gcc/powerpc-apple-darwin6.8/3.4.1/collect2 -arch ppc 
-dynamic -o conftest -lcrt1.o -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. 
/var/tmp//ccdw2JMf.o -lfrtbegin -lg2c -lgcc_s -lgcc -lSystem |
 c++filt
configure:2043: result:  -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem
configure:2100: checking for gcc
configure:2116: found /usr/bin/gcc
configure:2126: result: gcc
configure:2370: checking for C compiler version
configure:2373: gcc --version </dev/null >&5
gcc (GCC) 3.3 20030304 (Apple Computer, Inc. build 1495)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:2376: $? = 0
configure:2378: gcc -v </dev/null >&5
Reading specs from /usr/libexec/gcc/darwin/ppc/3.3/specs
Thread model: posix
gcc version 3.3 20030304 (Apple Computer, Inc. build 1495)
configure:2381: $? = 0
configure:2383: gcc -V </dev/null >&5
gcc: `-V' option must have argument
configure:2386: $? = 1
configure:2389: checking whether we are using the GNU C compiler
configure:2421: gcc -c   conftest.c >&5
configure:2427: $? = 0
configure:2430: test -z                          || test ! -s conftest.err
configure:2433: $? = 0
configure:2436: test -s conftest.o
configure:2439: $? = 0
configure:2452: result: yes
configure:2458: checking whether gcc accepts -g
configure:2487: gcc -c -g  conftest.c >&5
configure:2493: $? = 0
configure:2496: test -z                          || test ! -s conftest.err
configure:2499: $? = 0
configure:2502: test -s conftest.o
configure:2505: $? = 0
configure:2516: result: yes
configure:2533: checking for gcc option to accept ANSI C
configure:2611: gcc  -c -g -O2  conftest.c >&5
configure:2617: $? = 0
configure:2620: test -z                          || test ! -s conftest.err
configure:2623: $? = 0
configure:2626: test -s conftest.o
configure:2629: $? = 0
configure:2647: result: none needed
configure:2665: gcc -c -g -O2  conftest.c >&5
conftest.c:2: error: parse error before "me"
configure:2671: $? = 1
configure: failed program was:
| #ifndef __cplusplus
|   choke me
| #endif
configure:2823: checking for dummy main to link with Fortran libraries
configure:2862: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2868: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| 
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN MAIN__
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN MAIN_
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN __main
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN MAIN
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN _MAIN
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN __MAIN
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN main_
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN main__
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2918: gcc -o conftest -g -O2   conftest.c   -lcrt2.o 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem >&5
ld: multiple definitions of symbol ___darwin_gcc3_preregister_frame_info
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/crt2.o definition of 
___darwin_gcc3_preregister_frame_info in section (__TEXT,__text)
configure:2924: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #define F77_DUMMY_MAIN _main
| #ifdef F77_DUMMY_MAIN
| 
| #  ifdef __cplusplus
|      extern "C"
| #  endif
|    int F77_DUMMY_MAIN() { return 1; }
| 
| #endif
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2957: result: unknown
configure:2977: error: linking to Fortran libraries from C fails
See `config.log' for more details.

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_build=powerpc-apple-darwin7.5.0
ac_cv_build_alias=powerpc-apple-darwin7.5.0
ac_cv_c_compiler_gnu=yes
ac_cv_env_CC_set=
ac_cv_env_CC_value=
ac_cv_env_CFLAGS_set=
ac_cv_env_CFLAGS_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_F77_set=
ac_cv_env_F77_value=
ac_cv_env_FFLAGS_set=
ac_cv_env_FFLAGS_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_exeext=
ac_cv_f77_compiler_gnu=yes
ac_cv_f77_dummy_main=unknown
ac_cv_f77_libs=' -lcrt2.o -L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem'
ac_cv_fortran_dummy_main=unknown
ac_cv_host=powerpc-apple-darwin7.5.0
ac_cv_host_alias=powerpc-apple-darwin7.5.0
ac_cv_objext=o
ac_cv_prog_ac_ct_CC=gcc
ac_cv_prog_ac_ct_F77=g77
ac_cv_prog_cc_g=yes
ac_cv_prog_cc_stdc=
ac_cv_prog_f77_g=yes
ac_cv_prog_f77_v=-v

## ----------------- ##
## Output variables. ##
## ----------------- ##

CC='gcc'
CFLAGS='-g -O2'
CPPFLAGS=''
DEFS=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EXEEXT=''
F77='g77'
FFLAGS='-g -O2'
FLIBS=' -lcrt2.o -L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1 
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.1/../../.. -lfrtbegin -lg2c 
-lgcc_s -lSystem'
LDFLAGS=''
LIBS=''
OBJEXT='o'
PACKAGE_BUGREPORT=''
PACKAGE_NAME=''
PACKAGE_STRING=''
PACKAGE_TARNAME=''
PACKAGE_VERSION=''
PATH_SEPARATOR=':'
SHELL='/bin/sh'
ac_ct_CC='gcc'
ac_ct_F77='g77'
bindir='${exec_prefix}/bin'
build='powerpc-apple-darwin7.5.0'
build_alias=''
build_cpu='powerpc'
build_os='darwin7.5.0'
build_vendor='apple'
datadir='${prefix}/share'
exec_prefix='NONE'
host='powerpc-apple-darwin7.5.0'
host_alias=''
host_cpu='powerpc'
host_os='darwin7.5.0'
host_vendor='apple'
includedir='${prefix}/include'
infodir='${prefix}/info'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localstatedir='${prefix}/var'
mandir='${prefix}/man'
oldincludedir='/usr/include'
prefix='NONE'
program_transform_name='s,x,x,'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target_alias=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

#define PACKAGE_BUGREPORT ""
#define PACKAGE_NAME ""
#define PACKAGE_STRING ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""

configure: exit 1






-------------------- End of forwarded message --------------------

-- 
"...I've forgotten where I was going with this,
 but you can bet it was scathing."
--DesiredUsername