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Re: mpfr issues when Installing gcc 3.4 on fedora core

The only warning it reports is this immediately after detecting gmp and mpfr

*** This configuration is not supported in the following subdirectories:
    target-libada gnattools target-libgfortran target-libffi
target-zlib target-libjava zlib target-libobjc target-boehm-gc

The other suggestions u have said were typos: I have used
LD_LIBRARY_PATH with /usr/local/lib and --with-mpfr=/usr/local

I got the 3.4 sources from the gcc site. Is there a way I can get
prebuilt binaries ?


On 1/3/07, Joe Buck <> wrote:
On Wed, Jan 03, 2007 at 08:11:35PM -0500, drizzle drizzle wrote:
> Hi
>          I have tried everything any page might say on this, still
> stuck. Any help would be great
> Hi all
> I am trying to install 3.4 on my AMD turion 64 machine with fedora
> core.

You mean 4.3 (or rather a snapshot or svn checkout, since 4.3 does not
exist yet).

> But run into messages like this on gmake. Configure is fine
> libbackend.a(builtins.o): In function `fold_builtin_cbrt':
> ../.././gcc/builtins.c:7175: undefined reference to `mpfr_cbrt'
> libbackend.a(builtins.o): In function `fold_builtin_exponent':
> ../.././gcc/builtins.c:8183: undefined reference to `mpfr_exp10'
> libbackend.a(builtins.o): In function `fold_builtin_1':
> ../.././gcc/builtins.c:9400: undefined reference to `mpfr_erf'
> ../.././gcc/builtins.c:9406: undefined reference to `mpfr_erfc'

Does the configure output report any warnings about having the wrong
version of mpfr?

> Installed mpfr and gmp and verified mpfr.h and gmp.h exist in
> /usr/local/include and libmpfr.a , etc exists in
> /usr/local/lib
> I have tried the following things
> 1../configure  --with-mpfr=/usr/local/lib --with-gmp=/usr/local

Should be --with-mpfr=/usr/local

> 2. ./configure --with-mpfr-build=<source director of mpfr>
> --with-gmp-build=<source directory of gmp>

Not sure why that one didn't work.

> 3. --with-mpfr-lib, --with-mpfr-include,
> 4. Update LD_LIBRARY_PATH to also include /usr/local/
> 5.--enable-languages=c,c++ --disable-mpfr

LD_LIBRARY_PATH has to have /usr/local/lib, not /usr/local.
Please check that.  I suspect that this is the root of the problem.
I also think that gcc should be more robust in dealing with an not on the LD_LIBRARY_PATH that it has already found
via configure, but that's another story.

--disable-mpfr is not an option; mpfr is required now.

> I just want a working gcc 3.4 and I really dont care for this
> precision library. Any sugesstions on how to get it to work ...

If you want 3.4, then get it from or a mirror,
and you won't need mpfr.

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