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| ExtUtils::CppGuess(3) | User Contributed Perl Documentation | ExtUtils::CppGuess(3) |
NAME
ExtUtils::CppGuess - guess C++ compiler and flagsSYNOPSIS
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.
cpp_standard_flag
$guess->cpp_standard_flag( $standard_name )
Given a string $standard_name that is currently one of
- "C++98"
- "C++11"
- "C++14"
- "C++17"
returns a string with a flag that can be used to tell the compiler to support that version of the C++ standard or dies if version is not supported.
Added in version v0.22.
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.
| 2021-05-31 | perl v5.32.1 |
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