Add libquadmath - and use it in gfortran (round FIVE)

[Jack Howarth]

On Sat, Nov 13, 2010 at 10:30:00PM +0100, Tobias Burnus wrote:
> This patch is based on the round FOUR patch at  
> http://gcc.gnu.org/ml/gcc-patches/2010-11/msg01058.html
>
> It consists of:
> - The attached patch
> - The attached changelog
> - The library (unchanged):  
> http://gcc.gnu.org/ml/gcc-patches/2010-11/msg00790/libquadmath.tar.bz2
> - The test case at http://gcc.gnu.org/ml/gcc-patches/2010-11/txt00070.txt
>
> For convenience - due to popular request-, I include again the generated  
> files as additional attachment.
>
> Changes:
>
> a) Changes for configure and friends based on Ralf's review at  
> http://gcc.gnu.org/ml/gcc-patches/2010-11/msg01332.html
>
> b) gcc/testsuite/lib/gfortran.exp: Change handling of libgfortran.spec  
> in testsuite/lib/gfortran.exp. That should fix the problem reported by  
> Steve at http://gcc.gnu.org/ml/gcc-patches/2010-11/msg01339.html
>
> I have successfully bootstrapped and regtested (check-gfortran and  
> libgomp check) the patch on x86-64-linux. The previous patch has been  
> tested on x86-64-Darwin (by Jack), on Cygwin (--disable-shared, by  
> Angelo) and on x86-64 and i686 FreeBSD (by Steve).
>
> OK for the trunk?
>
> Tobias

Tobias,
    You appear to have omitted the change that adds...

# After this, we include a header that can override some of the 
# autodetected settings.
echo '#include "kinds-override.h"'

...to mk-kinds-h.sh again. 
             Jack



> /
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	* Makefile.def: Add libquadmath; build it with language=fortran.
> 	* configure.ac: Add libquadmath.
> 	* Makefile.tpl: Handle multiple libs in check-[+language+].
> 	* Makefile.in: Regenerate.
> 	* configure: Regenerate.
> 
> libquadmath/
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	Initial implementation and checkin.
> 
> gcc/fortran/
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	* gfortranspec.c (find_spec_file): New function.
> 	(lang_specific_driver): Try to find .spec file and use it.
> 	* trans-io.c (iocall): Define IOCALL_X_REAL128/COMPLEX128(,write).
> 	(gfc_build_io_library_fndecls): Build decl for __float128 I/O.
> 	(transfer_expr): Call __float128 I/O functions.
> 	* trans-types.c (gfc_init_kinds): Allow kind-16 belonging
> 	to __float128.
> 
> gcc/testsuite/
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	* gfortran.dg/quad_1.f90: New.
> 	* lib/gcc-defs.exp (gcc-set-multilib-library-path): Use also
> 	compiler arguments.
> 	* lib/gfortran.exp (gfortran_link_flags): Add libquadmath to
> 	library search path; call gcc-set-multilib-library-path with
> 	arguments such that libgfortran.spec is found.
> 	(gfortran_init): Add path for libgfortran.spec to GFORTRAN_UNDER_TEST.
> 
> libgomp/
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	* configure.ac: 
> 	* configure: Regenerate.
> 
> libgfortran/
> 2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
> 	    Tobias Burnus  <burnus@net-b.de>
> 
> 	PR fortran/32049
> 	* Makefile.am: Add missing pow_r16_i4.c, add transfer128.c,
> 	link libquadmath, if used.
> 	* acinclude.m4 (LIBGFOR_CHECK_FLOAT128): Add.
> 	* configure.ac: Use it, touch spec file.
> 	* gfortran.map: Add pow_r16_i4 and
> 	transfer_(real,complex)128(,write) functions.
> 	* intrinsics/cshift0.c (cshift0): Handle __float128 type.
> 	* intrinsics/erfc_scaled_inc.c: Ditto.
> 	* intrinsics/pack_generic.c (pack): Ditto
> 	* intrinsics/spread_generic.c (spread): Ditto.
> 	* intrinsics/unpack_generic.c (unpack1): Ditto.
> 	* io/read.c (convert_real): Ditto.
> 	* io/transfer.c: Update comments.
> 	* io/transfer128.c: New file.
> 	* io/write_float.def (write_float): Handle __float128 type.
> 	* libgfortran.h: #include quadmath_weak.h, define __builtin_infq
> 	and nanq.
> 	* m4/mtype.m4: Handle __float128 type.
> 	* runtime/in_pack_generic.c (internal_pack): Ditto.
> 	* runtime/in_unpack_generic.c (internal_unpack): Ditto.
> 	* kinds-override.h: New file.
> 	* libgfortran.spec.in: Ditto.
> 	* generated/pow_r16_i4.c: Generated.
> 	* Makefile.in: Regenerate.
> 	* configure: Regenerate.
> 	* config.h: Regenerate.
> 	* bessel_r10.c: Regenerate.
> 	* bessel_r16.c: Regenerate.
> 	* bessel_r4.c: Regenerate.
> 	* bessel_r8.c: Regenerate.
> 	* exponent_r16.c: Regenerate.
> 	* fraction_r16.c: Regenerate.
> 	* nearest_r16.c: Regenerate.
> 	* norm2_r10.c: Regenerate.
> 	* norm2_r16.c: Regenerate.
> 	* norm2_r4.c: Regenerate.
> 	* norm2_r8.c: Regenerate.
> 	* rrspacing_r16.c: Regenerate.
> 	* set_exponent_r16.c: Regenerate.
> 	* spacing_r16.c: Regenerate.