Re: [Mesa3d-dev] libtool problem

[Sven M. H. <pe...@gm...>]

On Mon, Jul 02, 2001 at 04:05:40PM +0200, Marcelo E. Magallon wrote:
> AC_DEFUN(MESA_SYS_AS_FEATURE, [
>   AC_CACHE_CHECK(whether the assembler supports $1,
>                  mesa_cv_sys_as_$1,
>                  MESA_TRY_ASSEMBLE([#include "src/X86/assyntax.h"], $2,
>                                    mesa_cv_sys_as_$1=yes,
>                                    mesa_cv_sys_as_$1=no))
> ])

I changed that to [#include "assyntax.h"].


>  note the test program wants to include "src/X86/assyntax.h".  For this
>  to work, the command line has to read:
> 
>  $ cc [...] -I../.. [...]
> 
>  In config.log I find:
> 
> configure:7290: gcc -c -g -O2 -Wall -fomit-frame-pointer -ffast-math -fexpensive
> -optimizations -fstrict-aliasing -malign-loops=2 -malign-jumps=2 -malign-functio
> ns=2 -D_REENTRANT -DPTHREADS  -I../../src/X86 conftest.S >&5
> conftest.S:1: src/X86/assyntax.h: No such file or directory
> 
>  Note it's using -I../../src/X86
> 
>  MESA_TRY_ASSEMBLE looks like this:
> 
> AC_DEFUN(MESA_TRY_ASSEMBLE, [
>   cat > conftest.S <<EOF
> $1
> 
> $2
> EOF
>   save_ac_ext="$ac_ext"
>   ac_ext=S
>   if AC_TRY_EVAL(ac_compile); then
>     $3;
>   else
>     $4;
>   fi
>   ac_ext="$save_ac_ext"
>   rm -f conftest.S
> ])
> 
>  In the top configure.in file it reads:
> 
> dnl Necessary for assembler sources
> save_ac_ext="$ac_ext"
> save_CPPFLAGS="$CPPFLAGS"
> ac_ext=S
> CPPFLAGS="$CPPFLAGS -I$srcdir/src/X86"
> 
>  what I need there is an extra "-I$srcdir" like this:
> 
> -CPPFLAGS="$CPPFLAGS -I$srcdir/src/X86"
> +CPPFLAGS="$CPPFLAGS -I$srcdir/src/X86 -I$srcdir"

That CPPFLAGS addition "-I$srcdir/src/X86" was originally there for exactly
the purpose of enabling one to #include "assyntax.h". It just got under the
wheels when I pulled the ASM checks out into assembler.m4 and was merely still
lingering around. Now I've put it to use again by stripping the "src/X86/"
from the include line.

Therefore the cross-directory build should now work.

-Sven

-- 
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