http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49502
Summary: Unable to build gcc with gmp/mpc/mpfr in its tree and
flag "--enable-cxx"
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: franck.z.bugzi...@orange.fr
*** the exact version of GCC;
configure:4184: gcc --version >&5
gcc (GCC) 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)
*** the system type;
uname -m = i686
uname -r = 1.7.9(0.237/5/3)
uname -s = CYGWIN_NT-5.1
uname -v = 2011-03-29 10:10
My Cygwin is recent (one week old).
My Cygwin version of libtool is 2.4-1.
It was run on a Dual Core, Windows XP SP 3, with Cygwin environment.
*** the options given when GCC was configured/built;
$ /cygdrive/c/gcc-4.6.0/configure --enable-cxx
*** the complete command line that triggers the bug;
$ make
more precisely:
It's a failure with a tag passed to libtool.
Took place in objdir/gmp/mpn.
With the command:
/bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I.
-I/cygdrive/c/gcc-4.6.0/gmp/mpn -I.. -D__GMP_WITHIN_GMP
-I/cygdrive/c/gcc-4.6.0/gmp -DOPERATION_`echo fib_table | sed 's/_$//'`
-DNO_ASM -g -fkeep-inline-functions -c -o fib_table.lo fib_table.c
*** the compiler output (error messages, warnings, etc.); and
messages sent:
libtool: compile: unable to infer tagged configuration
libtool: compile: specify a tag with `--tag'
backtraces from "make"s rewinding from /home/Défaut/objdir/gmp/mpn (make[5]) to
/home/Défaut/objdir (make):
[fib_table.lo] Error 1 (in mpn)
[all-recursive] Error 1 (in gmp)
[all] Error 2 (in gmp)
[all-stage1-gmp] Error 2 (in objdir)
[stage1-bubble] Error 2 (in objdir)
[all] Error 2
*** the preprocessed file (*.i*) that triggers the bug, generated by adding
-save-temps to the complete compilation command, or, in the case of a bug
report for the GNAT front end, a complete set of source files (see below).
not relevant (?) it's an issue with how the "libtool" utility was generated by
gmp's "configure" script with the parameters it got from gcc's makefile.
Namely, as found in gmp/config.log :
$ /cygdrive/c/gcc-4.6.0/gmp/configure --cache-file=./config.cache --enable-cxx
--enable-languages=c,c++,fortran,java,lto,objc --program-transform-name=s,y,y,
--disable-option-checking --build=i686-pc-cygwin --host=none-pc-cygwin
--target=none-pc-cygwin --srcdir=/cygdrive/c/gcc-4.6.0/gmp
--disable-intermodule --enable-checking=yes,types --disable-coverage
--enable-languages=c,lto --disable-shared
*** Extra-precision about the source compiled.
I have the same source tree for gcc, gcc/gmp, gcc/mpc and gcc/mpfr as the one
advised in the pre-requisite web page at gcc.gnu.org (4.6.0, 4.3.2, 0.9 and
3.0.1).
(see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49072 , for history, but all
the information for reproduceability has been reproduced here.)
gcc output is in an "objdir" directory separate from my gcc source directory.
As far as I can remember from my various attempts, a configure command with
--enable-cxx flag when I built gmp separately from gcc worked. I'll try it
again if you wish so as to make sure it's not a gmp issue.
