------- Comment #3 from fxcoudert at gcc dot gnu dot org 2010-01-02 19:53
-------
OK, I can reproduce the issue.
1. I have a GCC trunk (rev. 155544). In there I put symlinks to gmp-4.3.1,
mpfr-2.4.2 and mpc-0.8.1
2. From an empty build directory, I configure with: ../trunk/configure
--prefix=/Users/fx/devel/gcc/irun --enable-languages=c
3. "make" fails with:
checking for __gmpz_init in -lgmp... no
configure: error: libgmp not found or uses a different ABI.
make[2]: *** [configure-stage1-mpc] Error 1
make[1]: *** [stage1-bubble] Error 2
make: *** [all] Error 2
The problem is actually not an ABI one, but that the mpc configure fails with:
configure:10805: checking for __gmpz_init in -lgmp
configure:10830: gcc -o conftest -g -fkeep-inline-functions
-I/Users/fx/devel/gcc/ibin-intree/./gmp -I/Users/fx/devel/gcc/trunk/mpfr
conftest.c -lgmp >&5
ld: library not found for -lgmp
The problem is that mpc isn't told where to find the gmp and mpfr libraries. It
is confirmed by the mpc configure command-line (from mpc/config.log):
/Users/fx/devel/gcc/trunk/mpc/configure --cache-file=./config.cache
--prefix=/Users/fx/devel/gcc/irun --enable-languages=c
--program-transform-name=s,y,y, --disable-option-checking
--build=x86_64-apple-darwin10.2.0 --host=x86_64-apple-darwin10.2.0
--target=x86_64-apple-darwin10.2.0 --srcdir=../../trunk/mpc
--disable-intermodule --enable-checking=yes,types --disable-coverage
--enable-languages=c --disable-shared
--with-gmp-include=/Users/fx/devel/gcc/ibin-intree/./gmp
--with-mpfr-include=/Users/fx/devel/gcc/trunk/mpfr
This can be contrasted with mpfr, which is configured with
'--with-gmp-build=/Users/fx/devel/gcc/ibin-intree/./gmp', and thus knows where
to find libgmp. So it seems that the following patch should be applied to
configure.ac:
Index: configure.ac
===================================================================
--- configure.ac (revision 155544)
+++ configure.ac (working copy)
@@ -1287,7 +1287,7 @@
if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d
${srcdir}/mpfr; then
gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/.libs -L$$r/$(HOST_SUBDIR)/mpfr/_libs
'"$gmplibs"
gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
- extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr'
+ extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr
--with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/.libs'
# Do not test the mpfr version. Assume that it is sufficient, since
# it is in the source tree, and the library has not been built yet
# but it would be included on the link line in the version check below
@@ -1321,7 +1321,7 @@
gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/.libs -L$$r/$(HOST_SUBDIR)/gmp/_libs
'"$gmplibs"
gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
extra_mpfr_configure_flags='--with-gmp-build=$$r/$(HOST_SUBDIR)/gmp'
- extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp'
+ extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp
--with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/.libs'
# Do not test the gmp version. Assume that it is sufficient, since
# it is in the source tree, and the library has not been built yet
# but it would be included on the link line in the version check below
Except that on some targets, ".libs" is actually called "_libs". I don't know
how to deal with that.
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-01-02 19:53:42
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42424
