[Bug fortran/29275] New: fortran added to language build list even when known buggy version of mpfr found

[lucier at math dot purdue dot edu]

Configured with

 ../configure --prefix=/pkgs/gcc-test --with-gmp=/pkgs/gmp-4.1.4/
--with-mpfr=/pkgs/gmp-4.1.4/

The following messages come up during configure:

checking for correct version of gmp.h... yes
checking for correct version of mpfr.h... buggy version of MPFR detected
checking for any version of mpfr.h... yes
The following languages will be built: c,c++,fortran,java,objc
*** This configuration is not supported in the following subdirectories:
     target-libmudflap target-libada gnattools
    (Any other directories should still work fine.)

In /pkgs/gmp-4.1.4/include/mpfr.h we find

/* Define MPFR version number */
#define MPFR_VERSION_MAJOR 2
#define MPFR_VERSION_MINOR 1
#define MPFR_VERSION_PATCHLEVEL 1

which is indeed insufficient to build gfortran, but gfortran is still
configured in and "make bootstrap" fails with

/Users/gcc-test/programs/gcc/mainline/objdir-64/./prev-gcc/xgcc
-B/Users/gcc-test/programs/gcc/mainline/objdir-64/./prev-gcc/
-B/pkgs/gcc-test/powerpc-apple-darwin8.7.0/bin/ -c   -g -O2 -mdynamic-no-pic
-DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-Wold-style-definition -Wmissing-format-attribute -Werror -fno-common  
-DHAVE_CONFIG_H -I. -Ifortran -I../../gcc -I../../gcc/fortran
-I../../gcc/../include -I./../intl -I../../gcc/../libcpp/include
-I/pkgs/gmp-4.1.4//include -I/pkgs/gmp-4.1.4//include
-I../../gcc/../libdecnumber -I../libdecnumber    ../../gcc/fortran/arith.c -o
fortran/arith.o
cc1: warnings being treated as errors
../../gcc/fortran/arith.c: In function 'gfc_check_real_range':
../../gcc/fortran/arith.c:445: warning: implicit declaration of function
'mpfr_subnormalize'
make[3]: *** [fortran/arith.o] Error 1

[descartes:gcc/mainline/objdir-64] gcc-test% cat ../LAST_UPDATED 
Thu Sep 28 09:43:25 EDT 2006
Thu Sep 28 13:43:25 UTC 2006 (revision 117281M)


-- 
           Summary: fortran added to language build list even when known
                    buggy version of mpfr found
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lucier at math dot purdue dot edu
 GCC build triplet: powerpc-apple-darwin8.7.0
  GCC host triplet: powerpc-apple-darwin8.7.0
GCC target triplet: powerpc-apple-darwin8.7.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29275