[Bug other/35250] New: gmp and mpfr are erroneously configured with --target

[nightstrike at gmail dot com]

When gmp and mpfr are in the build tree of gcc, they will be automatically
configured and build.  However, some of the options passed to configure are
incorrect according to the GMP manual:

[Begin quote] "Note that the `--target' option is not appropriate for
GMP. It's for use when building compiler tools, with `--host' being
where they will run, and `--target' what they'll produce code for.
Ordinary programs or libraries like GMP are only interested in the
`--host' part, being where they'll run. (Some past versions of GMP
used `--target' incorrectly.)" [End quote]


"--target" should be removed from both configure lines.  Here is the
Makefile.def that I was looking at:

host_modules= { module= gmp; lib_path=.libs; bootstrap=true;
               extra_configure_flags='--disable-shared';
               no_install= true;
               host="none-${host_vendor}-${host_os}";
               target="none-${host_vendor}-${host_os}"; };
host_modules= { module= mpfr; lib_path=.libs; bootstrap=true;
               extra_configure_flags='--disable-shared
--with-gmp-build=$$r/$(HOST_SUBDIR)/gmp';
               no_install= true;
               host="none-${host_vendor}-${host_os}";
               target="none-${host_vendor}-${host_os}"; };


Here is a patch:

Index: Makefile.def
===================================================================
--- Makefile.def        (revision 132380)
+++ Makefile.def        (working copy)
@@ -61,13 +61,11 @@ host_modules= { module= gettext; };
 host_modules= { module= gmp; lib_path=.libs; bootstrap=true;
                extra_configure_flags='--disable-shared';
                no_install= true;
-               host="none-${host_vendor}-${host_os}";
-               target="none-${host_vendor}-${host_os}"; };
+               host="none-${host_vendor}-${host_os}"; };
 host_modules= { module= mpfr; lib_path=.libs; bootstrap=true;
                extra_configure_flags='--disable-shared
--with-gmp-build=$$r/$(HOST_SUBDIR)/gmp';
                no_install= true;
-               host="none-${host_vendor}-${host_os}";
-               target="none-${host_vendor}-${host_os}"; };
+               host="none-${host_vendor}-${host_os}"; };
 host_modules= { module= gnuserv; };
 host_modules= { module= gprof; };
 host_modules= { module= gzip; };


-- 
           Summary: gmp and mpfr are erroneously configured with --target
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nightstrike at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35250