ExtUtils::CppGuess

NAME

ExtUtils::CppGuess − guess C++ compiler and flags

SYNOPSIS

With Extutils::MakeMaker:

use ExtUtils::CppGuess;
my $guess = ExtUtils::CppGuess−>new;
WriteMakefile
( # MakeMaker args,
$guess−>makemaker_options,
);

With Module::Build:

my $guess = ExtUtils::CppGuess−>new;
my $build = Module::Build−>new
( # Module::Build arguments
$guess−>module_build_options,
);
$build−>create_build_script;

DESCRIPTION

"ExtUtils::CppGuess" attempts to guess the system’s C ++ compiler that is compatible with the C compiler that your perl was built with.

It can generate the necessary options to the Module::Build constructor or to ExtUtils::MakeMaker’s "WriteMakefile" function.

METHODS

new
Creates a new "ExtUtils::CppGuess" object. Takes the path to the C compiler as the "cc" argument, but falls back to the value of $Config{cc}, which should be what you want anyway.

You can specify "extra_compiler_flags" and "extra_linker_flags" (as strings) which will be merged in with the auto-detected ones.

module_build_options
Returns the correct options to the constructor of "Module::Build". These are:

extra_compiler_flags
extra_linker_flags
config => { cc => ... }, # as of 0.15

Please note the above may have problems on Perl <= 5.8 with ExtUtils::CBuilder <= 0.280230 due to a Perl RE issue.

makemaker_options
Returns the correct options to the "WriteMakefile" function of "ExtUtils::MakeMaker". These are:

CCFLAGS
dynamic_lib => { OTHERLDFLAGS => ... }
CC # as of 0.15

If you specify the extra compiler or linker flags in the constructor, they’ll be merged into "CCFLAGS" or "OTHERLDFLAGS" respectively.

is_gcc
Returns true if the detected compiler is in the gcc family.

is_msvc
Returns true if the detected compiler is in the MS VC family.

is_clang
Returns true if the detected compiler is in the Clang family.

is_sunstudio
Returns true if the detected compiler is in the Sun Studio family.

add_extra_compiler_flags
Takes a string as argument that is added to the string of extra compiler flags.

add_extra_linker_flags
Takes a string as argument that is added to the string of extra linker flags.

compiler_command
Returns the string that can be passed to "system" to execute the compiler. Will include the flags returned as the Module::Build "extra_compiler_flags".

Added in 0.13.

linker_flags
The same as returned as the Module::Build "extra_linker_flags".

Added in 0.13.

iostream_fname
Returns the filename to "#include" to get iostream capability.

This can be used a bit creatively to be portable in one’s XS files, as the tests for this module need to be:

# in Makefile.PL:
$guess−>add_extra_compiler_flags(
'−DINCLUDE_DOT=' .
($guess−>iostream_fname =~ /\./ ? 1 : 0)
);
// in your .xs file:
#if INCLUDE_DOT
#include <string.h>
#else
#include <string>
#endif

Added in 0.15.

cpp_flavor_defs
Returns the text for a header that "#define"s "__INLINE_CPP_STANDARD_HEADERS" and "__INLINE_CPP_NAMESPACE_STD" if the standard headers and namespace are available. This is determined by trying to compile C ++ with "#define <iostream>" − if it succeeds, the symbols will be defined, else commented.

Added in 0.15.

AUTHOR

Mattia Barbon <mbarbon@cpan.org>

Steffen Mueller <smueller@cpan.org>

Tobias Leich <froggs@cpan.org>

COPYRIGHT AND LICENSE

Copyright 2010, 2011 by Mattia Barbon.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.