[PATCH] Making double precision constants work with -fsingle-precision-constant [was: Re: current subversion (rev 115032) compiling issues]

[Marco Trudel]

Hello Carlos

Your patch http://gcc.gnu.org/ml/gcc-patches/2005-12/msg00790.html seems 
to break cross-compiling for windows, see attached forwarded message.


regards
Marco


Marco Trudel wrote:
> Hi list
> 
> I run into errors trying to compile the current subversion state. I 
> compile with this command:
> 
> cd $GCC_BUILD_DIR
> $GCC_SRC_DIR/configure --prefix=$GCC_OUT_DIR \
>     --build=`$GCC_SRC_DIR/config.guess` --host=i686-pc-mingw32 
> --target=i686-pc-mingw32 \
>     --with-sysroot=$GCC_OUT_DIR/sys-root 
> --with-build-sysroot=$GCC_OUT_DIR/sys-root \
>     --enable-languages=c,c++,java \
>     --with-as=$AS --with-ld=$LD --with-gcj=i686-pc-mingw32-gcj\
>     --with-gnu-as --with-gnu-ld \
>     --disable-nls --disable-debug --disable-shared --disable-checking \
>     --enable-threads=win32 --disable-win32-registry 
> --enable-sjlj-exceptions \
>     --enable-libgcj
> make
> 
> My compiler is a gcc 4.1.1 that compiles for i686-pc-mingw32.
> 
> 
> The first problem is:
> $GCC_SRC_DIR/libstdc++-v3/libsupc++/eh_personality.cc:434: error: 
> '_Unwind_GetIPInfo' was not declared in this scope
> 
> Inserting #include "unwind-generic.h" before #include "unwind-cxx.h" 
> solves this one. Inserting it anywhere after "unwind-cxx.h", won't work.
> I don't know if this is correct or not, just solves the first problem...
> 
> Ok, next Problem:
> $GCC_BUILD_DIR/i686-pc-mingw32/libstdc++-v3/include/limits:1011: error: 
> '__FLT_HAS_DENORM__' was not declared in this scope
> $GCC_BUILD_DIR/i686-pc-mingw32/libstdc++-v3/include/limits:1068: error: 
> '__DBL_HAS_DENORM__' was not declared in this scope
> $GCC_BUILD_DIR/i686-pc-mingw32/libstdc++-v3/include/limits:1125: error: 
> '__LDBL_HAS_DENORM__' was not declared in this scope
> 
> Here I'm stuck because I'm unable to find the defining header or source 
> file for these constants... Any ideas?
> 
> 
> regards
> Marco
> 
>