[CMake] Why I cannot build a dll that embeds perl with cmake?

[Georgios Petasis]

Hi all,

I have some C code that embeds perl into a C application.

If I compile my code with:

cl.exe <result of "perl -MExtUtils::Embed -e ccopts">

and then:

link <result of "perl -MExtUtils::Embed -e ldopts">

the resulting dll works. But if I compile it with cmake, my code always 
crashes, because a perl structure (a global pointer) is left 
uninitialised, and is always NULL. It seems that cmake inserts something 
that changes the building process.
How can I find what commands are executed when the code is compiled/linked?
I even tried the following:

EXECUTE_PROCESS ( COMMAND ${PERL_EXECUTABLE}
                  -MExtUtils::Embed -e ccopts
                  OUTPUT_VARIABLE PERL_OUTPUT
                  RESULT_VARIABLE PERL_RETURN_VALUE )
IF ( NOT PERL_RETURN_VALUE )
  STRING ( REPLACE "-O1" "" ADDITIONAL_PERL_CCOPTS ${PERL_OUTPUT} )
ENDIF ( NOT PERL_RETURN_VALUE )
EXECUTE_PROCESS ( COMMAND ${PERL_EXECUTABLE}
                  -MExtUtils::Embed -e ldopts
                  OUTPUT_VARIABLE PERL_OUTPUT
                  RESULT_VARIABLE PERL_RETURN_VALUE )
IF ( NOT PERL_RETURN_VALUE )
  SET ( ADDITIONAL_PERL_LDOPTS ${PERL_OUTPUT} )
ENDIF ( NOT PERL_RETURN_VALUE )
SET ( CMAKE_C_FLAGS                     "-DUSE_TCL_STUBS 
${ADDITIONAL_PERL_CCOPTS}" )
SET ( CMAKE_C_FLAGS_RELEASE             "" )
SET ( CMAKE_C_FLAGS_DEBUG               "" )
SET ( CMAKE_SHARED_LINKER_FLAGS         ${ADDITIONAL_PERL_LDOPTS} )
SET ( CMAKE_SHARED_LINKER_FLAGS_RELEASE "" )
SET ( CMAKE_SHARED_LINKER_FLAGS_DEBUG   "" )

But it didn't change anything. The produced dll still crashes. Any ideas?

Regards,

George