[Bug bootstrap/54260] GCC 4.7.1 fails to build.

[Fetrovsky at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54260

--- Comment #3 from Feto <Fetrovsky at gmail dot com> 2012-08-15 23:48:07 UTC ---
Hi,

Thanks for the response.  I've looked at the corresponding config.log, and
looked into the problems there, but I can't seem to make sense of what's going
on.  I get:

 98 configure:3373: /home/Feto/sw/gcc/build/./gcc/xgcc
-B/home/Feto/sw/gcc/build/./gcc/ -B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include    -o conftest -g -O2  
conftest.c  >&5
 99 /home/Feto/sw/gcc/build/./gcc/cc1: error while loading shared libraries:
libmpc.so.2: cannot open shared object
    file: No such file or directory
100 configure:3376: $? = 1
101 configure:3564: checking for suffix of object files
102 configure:3586: /home/Feto/sw/gcc/build/./gcc/xgcc
-B/home/Feto/sw/gcc/build/./gcc/ -B/usr/local/x86_64-unknown-
    linux-gnu/bin/ -B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -
    isystem /usr/local/x86_64-unknown-linux-gnu/sys-include    -c -g -O2 
conftest.c >&5
103 /home/Feto/sw/gcc/build/./gcc/cc1: error while loading shared libraries:
libmpc.so.2: cannot open shared object
    file: No such file or directory
104 configure:3590: $? = 1
105 configure: failed program was:
106 | /* confdefs.h */
107 | #define PACKAGE_NAME "GNU C Runtime Library"
108 | #define PACKAGE_TARNAME "libgcc"
109 | #define PACKAGE_VERSION "1.0"
110 | #define PACKAGE_STRING "GNU C Runtime Library 1.0"
111 | #define PACKAGE_BUGREPORT ""
112 | #define PACKAGE_URL "http://www.gnu.org/software/libgcc/"
113 | /* end confdefs.h.  */
114 |
115 | int
116 | main ()
117 | {
118 |
119 |   ;
120 |   return 0;
121 | }
122 configure:3604: error: in
`/home/Feto/sw/gcc/build/x86_64-unknown-linux-gnu/libgcc':
123 configure:3607: error: cannot compute suffix of object files: cannot
compile
124 See `config.log' for more details.


So I tried compiling the test file (conftest.c) like so:

/home/Feto/sw/gcc/build/./gcc/xgcc -B/home/Feto/sw/gcc/build/./gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include    -o conftest -g -O2  
conftest.c

I made sure libmpc is properly installed, the proper location is passed to
configure, and so on.  I'm not sure what else to try.

[Feto@fet libgcc]$ ll /usr/local/lib/libmpc*
-rw-r--r-- 1 root root 211870 Aug 14 15:27 /usr/local/lib/libmpc.a
-rwxr-xr-x 1 root root    946 Aug 14 15:27 /usr/local/lib/libmpc.la
lrwxrwxrwx 1 root root     15 Aug 14 15:27 /usr/local/lib/libmpc.so ->
libmpc.so.2.0.0
lrwxrwxrwx 1 root root     15 Aug 14 15:27 /usr/local/lib/libmpc.so.2 ->
libmpc.so.2.0.0
-rwxr-xr-x 1 root root  98008 Aug 14 15:27 /usr/local/lib/libmpc.so.2.0.0
[Feto@fet libgcc]$ ld -lmpc
ld: warning: cannot find entry symbol _start; not setting start address
[Feto@fet libgcc]$


Thank you,


- Daniel