[petsc-dev] CFLAGS / LDFLAGS and cxx error

[Wesley Smith]

I was trying to set the -arch flag for compilation and linking, but it
seems to interfere somehow with the cxx compiler.  Even providing one
explicitly doesn't seem to work.  Is there a way to force compilation
as i386 instead of x86_64?

bleeps:petsc-dev wesleysmith$ ./configure --with-cc=gcc
--with-clanguage=cxx --download-boost --with-fc=0 --download-parmetis
--with-shared --with-dynamic --download-mpich --with-sieve
--CFLAGS="-arch i386" --LDFLAGS="-arch i386"
===============================================================================
             Configuring PETSc to compile on your system
===============================================================================
TESTING: check from
config.libraries(config/BuildSystem/config/libraries.py:133)

           *******************************************************************************
         UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log
for details):
-------------------------------------------------------------------------------
Could not find a CXX compiler. Please set with the option --with-cxx
or -CXX and load the config.compilers module.
*******************************************************************************

bleeps:petsc-dev wesleysmith$ ./configure --with-cc=gcc
--with-clanguage=cxx --download-boost --with-fc=0 --download-parmetis
--with-shared --with-dynamic --download-mpich --with-sieve
--CFLAGS="-arch i386" --LDFLAGS="-arch i386" --with-cxx=g++
===============================================================================
             Configuring PETSc to compile on your system
===============================================================================
TESTING: checkCxxCompiler from
config.setCompilers(config/BuildSystem/config/setCompilers.py:638)

*******************************************************************************
         UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log
for details):
-------------------------------------------------------------------------------
C++ compiler you provided with -with-cxx=g++ does not work
*******************************************************************************

bleeps:petsc-dev wesleysmith$ ./configure --with-cc=gcc
--with-clanguage=cxx --download-boost --with-fc=0 --download-parmetis
--with-shared --with-dynamic --download-mpich --with-sieve
--CFLAGS="-arch i386" --LDFLAGS="-arch i386" --with-cxx=gcc
===============================================================================
             Configuring PETSc to compile on your system
===============================================================================
TESTING: checkCxxCompiler from
config.setCompilers(config/BuildSystem/config/setCompilers.py:638)

*******************************************************************************
         UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log
for details):
-------------------------------------------------------------------------------
Cannot use C compiler gcc as the C++ compiler passed in with --with-cxx
*******************************************************************************