Re: Using different compilers

[Sanatan Rai]

: On Wed, 1 Aug 2001, Sanatan Rai wrote:
: > I am using cons to build a simulation project in C++. However, I am using
: > a library which is in (ANSI) C. How do I tell cons to use gcc and not g++
: > when building the library? I tried putting an override command in the
: > Conscript file for the library, but that didn't work.
:
: Set the CXX construction variable when you create or clone the
: environment:
:
:       $env = new cons ( CXX => 'gcc' );
:

        Nope, that doesn't work.

I have two directories that need to be done

        #./sim
        #./prng

sim has the C++ code that needs to be compiled with g++, prng has the
library which needs to be compiled with gcc.

Since #./Construct has

$SIM = new cons(
        CC => 'g++',
        ...
) ;

all compilations invoke g++. I tried defining

$SIM2 = $SIM->clone(
        CC => 'gcc'
) ;

and then:

# Get variables from parent
Import qw( SIM SIM2 INCLUDE LIB ) ;

# Install the products of this library
Install $SIM $INCLUDE, 'config.h'; # Necessary to compile prng
Install $SIM $INCLUDE, 'prng.h' ;
Install $SIM $LIB, 'libprng.a' ;

# Build libprng
Library $SIM 'libprng.a', 'anti.c', 'compound.c', 'cons.c', 'dicg.c',
'eicg.c',
'external.c', 'file.c', 'icg.c', 'lcg.c', 'meicg.c','mt19937.c', 'prng.c',
'qcg.
c', 'sub.c', 'support.c' ;

This calls gcc allright, but it puts things in the wrong places: in
particular it create a directory called TOP in #./sim and put everything
in bin there. (I have the following in #./Construct

# Top most directory
$TOP = '#.' ;

# Shared variables
Export qw( SIM SIM2 INCLUDE LIB  BIN ) ;

# Share directory def
$INCLUDE = "$TOP/include" ;
$LIB     = "$TOP/lib" ;
$BIN     = "TOP/bin" ;


I can always build the library separately, but to avoid that sort of thing
is precisely why I am using cons.

Thanks!

--Sanatan





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Sanatan Rai,                      | E.-mail: address@hidden
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