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package platform::BASE;
use strict;
use warnings;
use Carp;
# Assume someone set @INC right before loading this module
use configdata;
# Globally defined "platform specific" extensions, available for uniformity
sub depext { '.d' }
# Functions to convert internal file representations to platform specific
# ones. Note that these all depend on extension functions that MUST be
# defined per platform.
#
# Currently known internal or semi-internal extensions are:
#
# .a For libraries that are made static only.
# Internal libraries only.
# .o For object files.
# .s, .S Assembler files. This is an actual extension on Unix
# .res Resource file. This is an actual extension on Windows
sub binname { return $_[1] } # Name of executable binary
sub dsoname { return $_[1] } # Name of dynamic shared object (DSO)
sub sharedname { return __isshared($_[1]) ? $_[1] : undef } # Name of shared lib
sub staticname { return __base($_[1], '.a') } # Name of static lib
# Convenience function to convert the shlib version to an acceptable part
# of a file or directory name. By default, we consider it acceptable as is.
sub shlib_version_as_filename { return $config{shlib_version} }
# Convenience functions to convert the possible extension of an input file name
sub bin { return $_[0]->binname($_[1]) . $_[0]->binext() }
sub dso { return $_[0]->dsoname($_[1]) . $_[0]->dsoext() }
sub sharedlib { return __concat($_[0]->sharedname($_[1]), $_[0]->shlibext()) }
sub staticlib { return $_[0]->staticname($_[1]) . $_[0]->libext() }
# More convenience functions for intermediary files
sub def { return __base($_[1], '.ld') . $_[0]->defext() }
sub obj { return __base($_[1], '.o') . $_[0]->objext() }
sub res { return __base($_[1], '.res') . $_[0]->resext() }
sub dep { return __base($_[1], '.o') . $_[0]->depext() } # <- objname
sub asm { return __base($_[1], '.s') . $_[0]->asmext() }
# Another set of convenience functions for standard checks of certain
# internal extensions and conversion from internal to platform specific
# extension. Note that the latter doesn't deal with libraries because
# of ambivalence
sub isdef { return $_[1] =~ m|\.ld$|; }
sub isobj { return $_[1] =~ m|\.o$|; }
sub isres { return $_[1] =~ m|\.res$|; }
sub isasm { return $_[1] =~ m|\.s$|; }
sub iscppasm { return $_[1] =~ m|\.S$|; }
sub isstaticlib { return $_[1] =~ m|\.a$|; }
sub convertext {
if ($_[0]->isdef($_[1])) { return $_[0]->def($_[1]); }
if ($_[0]->isobj($_[1])) { return $_[0]->obj($_[1]); }
if ($_[0]->isres($_[1])) { return $_[0]->res($_[1]); }
if ($_[0]->isasm($_[1])) { return $_[0]->asm($_[1]); }
if ($_[0]->isstaticlib($_[1])) { return $_[0]->staticlib($_[1]); }
return $_[1];
}
# Helpers ############################################################
# __base EXPR, LIST
# This returns the given path (EXPR) with the matching suffix from LIST stripped
sub __base {
my $path = shift;
foreach (@_) {
if ($path =~ m|\Q${_}\E$|) {
return $`;
}
}
return $path;
}
# __isshared EXPR
# EXPR is supposed to be a library name. This will return true if that library
# can be assumed to be a shared library, otherwise false
sub __isshared {
return !($disabled{shared} || $_[0] =~ /\.a$/);
}
# __concat LIST
# Returns the concatenation of all elements of LIST if none of them is
# undefined. If one of them is undefined, returns undef instead.
sub __concat {
my $result = '';
foreach (@_) {
return undef unless defined $_;
$result .= $_;
}
return $result;
}
1;
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