Re: Using Cons and Mingw32

[Marcello Pietrobon]

Thank you,
I could get easily to the problem.
The PATH of the gcc/g++ bins was not correct in the Conscript.

By the way, with Mingw32 it is generally better NOT to have GCC_EXEC_PREFIX
set , because it creates interferences with Cygwin.
(see for example
http://www.geocrawler.com/lists/3/SourceForge/6013/0/4741305/).

Thank you

Marcello

Alex Jacques wrote:

> Perhaps your mingw32 g++ installation relies on one of the numerous
> environment variables that can affect it's operation, such as
> GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, C_INCLUDE_PATH or
> CPLUS_INCLUDE_PATH (see gcc manual). I know that I've had problems like
> that with gcc and g++ (more the latter).
>
> One quick trick to see if it's a user environment var problem like that
> (I'm assuming g++ works ok if you invoke it directly from a "DOS Window"
> command line) is to do this:
>
> $CONS = new cons(ENV => {%ENV},
>                    # all those other cons vars
>                 );
>
> This drags your entire user environment into the cons environment. Hence
> it's probably not a good long term solution, but is a helpful test. If
> it works then you can narrow down the environment vars you need.
>
> -----Original Message-----
> From: address@hidden [mailto:address@hidden
> Behalf Of Marcello Pietrobon
> Sent: Wednesday, November 29, 2000 7:53 PM
> To: address@hidden
> Subject: Using Cons and Mingw32
>
> Hi,
> I am trying to use cons to compile with g++ of mingw32.
> >From a Dos Box without Cons everything is working fine.
>
> If  I use Cons with 'cl' (i.e. Microsoft Visual C++) everything is
> working fine.
> I use something like:
>     CCCOM => '%CC %CFLAGS %_IFLAGS /c %< /FR%>:d\\ /Fo%>:d\\ /Fp%>:b.pch
> /Fd%>:d\\
> ',
>     LINKCOM  => '%LINK %LDFLAGS /pdb:%<:b.pdb %IMPLIB /out:%> %< %_LDIRS
> %LIBS ',
>
> But if I use g++ Cons with g++:
>   CCCOM         => '%CC %CFLAGS %_IFLAGS -c %<',
>   CXXCOM        => '%CXX %CXXFLAGS %_IFLAGS -c %<',
> then I have the following interpretation error:
> =================
> g++: installation problem, cannot exec `cpp': No such file or directory
> cons.pl: *** [build\hello.o] Error 1
> cons.pl: errors constructing build\hello.o
> =================
>
> >From a Perl shell I can easily do (once the file  build\hello.cpp
> exists):
> system('g++  -c build\hello.cpp');
> without any errors.
>
> The cons file is cons-2.2.0 without any changes.
> I append the construct and conscript files.
> As you see, under Win32 (I use WIndows 2000) I have to override all the
> defaults.
> Is the first time I am using g++ with cons. If  by chance you can see
> any other
> errors, please tell me.
>
> Thank you
>
> Marcello
>
> ==============================================
> Construct file:
>
> Export qw(CONS BUILD EXPORT);
>
> ##with Microsoft Visual C++
> #  $CONS = new cons(
> #  ENV => {
> #       PATH =>
> "C:\\GNU\\Perl\\bin\\;C:\\WINNT\\system32;C:\\WINNT;C:\\WINNT\\system32\
> \WBEM;C:\\WINNT\\system32;C:\\WINNT;C:\\WINNT\\System32\\Wbem;C:\\PROGRA
> ~1\\MICROS~3\\Common\\msdev98\\BIN;C:\\PROGRA~1\\MICROS~3\\VC98\\BIN;C:\
> \PROGRA~1\\MICROS~3\\Common\\TOOLS\\WINNT;C:\\PROGRA~1\\MICROS~3\\Common
> \\TOOLS",
>
> #              INCLUDE =>
> "C:\\PROGRA~1\\MICROS~3\\VC98\\ATL\\INCLUDE;C:\\PROGRA~1\\MICROS~3\\VC98
> \\INCLUDE;C:\\PROGRA~1\\MICROS~3\\VC98\\MFC\\INCLUDE",
>
> #       LIB =>
> "C:\\PROGRA~1\\MICROS~3\\VC98\\LIB;C:\\PROGRA~1\\MICROS~3\\VC98\\MFC\\LI
> B;",
> #          },
> #    CCCOM => '%CC %CFLAGS %_IFLAGS /c %< /FR%>:d\\ /Fo%>:d\\
> /Fp%>:b.pch
> /Fd%>:d\\ ',
> #    LINKCOM  => '%LINK %LDFLAGS /pdb:%<:b.pdb %IMPLIB /out:%> %<
> %_LDIRS %LIBS ',
>
> #  CC => 'cl',
> # );
>
> ##with Mingw32
>   $CONS = new cons(
>   CC            => 'g++',
>   CFLAGS        => '',
>   #CCCOM         => '%CC %CFLAGS %_IFLAGS -c %< -o %>',
>   INCDIRPREFIX  => '-I',
>   CXX           => '%CC',
>   CXXFLAGS      => '%CFLAGS',
>   #CXXCOM        => '%CXX %CXXFLAGS %_IFLAGS -c %< -o %>',
>   LINK          => '%CXX',
>   LINKCOM       => '%LINK %LDFLAGS -o %> %< %_LDIRS %LIBS',
>   LINKMODULECOM => '%LD -r -o %> %<',
>   LIBDIRPREFIX  => '-L',
>   AR            => 'ar',
>   ARFLAGS       => 'r',
>   ARCOM         => "%AR %ARFLAGS %> %<\n%RANLIB %>",
>   RANLIB        => 'ranlib',
>   AS            => 'as',
>   ASFLAGS       => '',
>   ASCOM         => '%AS %ASFLAGS %< -o %>',
>   LD            => 'ld',
>   LDFLAGS       => '',
>   PREFLIB       => 'lib',
>   SUFEXE        => '.exe',
>   SUFLIB        => '.a',
>   SUFLIBS       => '.so:.a',
>   SUFOBJ        => '.o',
>   #$ENV           => { 'PATH' => '/bin:/usr/bin' },
>
>   #these are some necessary changes
>   #(because g++ doesn't seems to accept -c and -o together, but I will
> check
> better after the main problem has been resolved)
>   CCCOM         => '%CC %CFLAGS %_IFLAGS -c %<',
>   CXXCOM        => '%CXX %CXXFLAGS %_IFLAGS -c %<',
>
>   ENV => {
>        PATH => 'C:\GNU\Gcc-2.95.2-1\lib\gcc-lib\bin',
>        INCLUDE => 'C:\GNU\Gcc-2.95.2-1\lib\gcc-lib\include',
>        LIB => 'C:\GNU\Gcc-2.95.2-1\lib\gcc-lib\lib',
>           },
>  );
>
>  $BUILD = "build";
>  $EXPORT = "export";
>  Link $BUILD => ".";
>   Build ("$BUILD/Conscript");
> ==========================================================
>
> Conscript file:
>
>  #Install $CONS qq(exp), qq(hello.c);       # (###)
> Import qw(CONS BUILD EXPORT);
>
>  $src = 'hello.cpp';
>  $tgt = 'hello.exe';
>   Program $CONS $tgt, $src;
>  $EXPORT = $BUILD;
>  if ($EXPORT ne $BUILD) {
>   Install $CONS "#$EXPORT",  $tgt;
>  }
>  $path = "$EXPORT\\$tgt";
> ==========================================================
>
> _______________________________________________
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>
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