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116 lines
4.8 KiB
Python
116 lines
4.8 KiB
Python
# encoding: utf-8
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# xshlib.py -- advanced linking utils
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# Copyright (C) 2019 mittorn
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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from waflib import Logs, Utils, TaskGen, Task
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from waflib.Tools import ccroot, c, cxx
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MAIN_BINARY = 'xash'
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def options(opt):
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opt.add_option('--static-linking', action='store', dest='STATIC_LINKING', default=None)
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def configure(conf):
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if conf.options.STATIC_LINKING:
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conf.find_program('ld')
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conf.find_program('objcopy')
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conf.env.STATIC_LINKING = conf.options.STATIC_LINKING
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conf.add_os_flags('LD_RELOCATABLE_FLAGS')
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def build(bld):
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if bld.env.STATIC_LINKING:
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apply_static(MAIN_BINARY,*bld.env.STATIC_LINKING.split(','))
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class objcopy_relocatable_lib(Task.Task):
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"remove all exports except of lib_${NAME}_exports"
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no_errcheck_out = True
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run_str = '${OBJCOPY} -G lib_${NAME}_exports ${SRC[0].abspath()} ${TGT[0].abspath()}'
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def keyword(self):
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return 'ObjCopy'
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class xshlib(ccroot.link_task):
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"make relocatable library"
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no_errcheck_out = True
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run_str = '${LD} -r -o ${TGT[0].abspath()} ${LD_RELOCATABLE_FLAGS} ${CCLNK_SRC_F}${SRC}'
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def add_target(self, target):
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"create objcopy task for target"
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if not self.env.LD_RELOCATABLE_FLAGS:
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self.env.LD_RELOCATABLE_FLAGS = []
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if '-m32' in self.env.LINKFLAGS:
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self.env.LD_RELOCATABLE_FLAGS.append('-melf_i386')
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base = self.generator.path
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target_unstripped = base.find_or_declare('%s.unstripped.o'% target)
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target_stripped = base.find_or_declare('%s.o'% target)
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self.set_outputs(target_unstripped)
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self.generator.objcopy_task= self.generator.create_task('objcopy_relocatable_lib', target_unstripped, target_stripped)
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self.generator.objcopy_task.env['NAME'] = target
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class cprogram_static(c.cprogram):
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"build static c program"
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run_str = '${LINK_CC} -static ${LINKFLAGS} ${CCLNK_SRC_F}${SRC} ${CCLNK_TGT_F}${TGT[0].abspath()} ${RPATH_ST:RPATH} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${FRAMEWORK_ST:FRAMEWORK} ${ARCH_ST:ARCH} ${STLIB_MARKER} ${STLIBPATH_ST:STLIBPATH} ${STLIB_ST:STLIB} ${STLIB_MARKER} ${LIBPATH_ST:LIBPATH} ${LIB_ST:LIB} ${LDFLAGS}'
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class cxxprogram_static(cxx.cxxprogram):
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"build static cxx program"
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run_str = '${LINK_CXX} -static ${LINKFLAGS} ${CXXLNK_SRC_F}${SRC} ${CXXLNK_TGT_F}${TGT[0].abspath()} ${RPATH_ST:RPATH} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${FRAMEWORK_ST:FRAMEWORK} ${ARCH_ST:ARCH} ${STLIB_MARKER} ${STLIBPATH_ST:STLIBPATH} ${STLIB_ST:STLIB} ${STLIB_MARKER} ${LIBPATH_ST:LIBPATH} ${LIB_ST:LIB} ${LDFLAGS}'
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# usevars are same
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ccroot.USELIB_VARS['cprogram_static'] = ccroot.USELIB_VARS['cxxprogram_static'] = ccroot.USELIB_VARS['cxxprogram']
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def apply_static(main, *reloc):
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"apply xshlib tasks and generate files"
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def write_libraries_list(out_node):
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"generate library list"
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libraries = reloc
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externs = '\n'.join(['extern table_t lib_%s_exports[];' % e for e in libraries])
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table = '\n'.join(['{ "%s", &lib_%s_exports },' % (e, e) for e in libraries])
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out_node.write('%s\nstruct {const char *name;void *func;} libs[] = {\n%s\n{0,0}\n};\n' % (externs, table ))
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def write_export_list(name, in_node, out_node):
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"generate exports list for library"
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exports = in_node.read().splitlines()
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externs = '\n'.join(['extern void %s(void);' % e for e in exports])
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table = '\n'.join(['{ "%s", &%s },' % (e, e) for e in exports])
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out_node.write('%s\nstruct {const char *name;void *func;} lib_%s_exports[] = {\n%s\n{0,0}\n};\n' % (externs, name, table ))
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@TaskGen.feature('cshlib', 'cxxshlib')
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@TaskGen.before('process_source', 'propogate_uselib_vars')
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def apply_xshlib(self):
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"apply xshlib feature and inject link_helper.c to sources"
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if self.name in reloc:
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for k in ('cshlib', 'cxxshlib'):
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if k in self.features:
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self.features.remove(k)
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self.features.append('xshlib')
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in_node = self.path.get_src().make_node('exports.txt')
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bldnode = self.path.get_bld()
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bldnode.mkdir()
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out_node = bldnode.make_node('link_helper.c')
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write_export_list(self.name,in_node, out_node)
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self.source = Utils.to_list(self.source) + [out_node]
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@TaskGen.feature('cshlib', 'cxxshlib', 'cprogram', 'cxxprogram', 'cprogram_static', 'cxxprogram_static')
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@TaskGen.before('process_source')
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def add_deps(self):
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"add all relocatable objects to main binary source list"
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if self.name == main:
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write_libraries_list(self.path.get_bld().make_node('generated_library_tables.h'))
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for t in reloc:
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self.source += [self.bld.get_tgen_by_name(t).objcopy_task.outputs[0]]
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