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+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+# Ralf Habacker, 2006 (rh)
+# Yinon Ehrlich, 2009
+
+"""
+gcc/llvm detection.
+"""
+
+from waflib.Tools import ccroot, ar
+from waflib.Configure import conf
+
+@conf
+def find_gcc(conf):
+ """
+ Find the program gcc, and if present, try to detect its version number
+ """
+ cc = conf.find_program(['gcc', 'cc'], var='CC')
+ conf.get_cc_version(cc, gcc=True)
+ conf.env.CC_NAME = 'gcc'
+
+@conf
+def gcc_common_flags(conf):
+ """
+ Common flags for gcc on nearly all platforms
+ """
+ v = conf.env
+
+ v.CC_SRC_F = []
+ v.CC_TGT_F = ['-c', '-o']
+
+ if not v.LINK_CC:
+ v.LINK_CC = v.CC
+
+ v.CCLNK_SRC_F = []
+ v.CCLNK_TGT_F = ['-o']
+ v.CPPPATH_ST = '-I%s'
+ v.DEFINES_ST = '-D%s'
+
+ v.LIB_ST = '-l%s' # template for adding libs
+ v.LIBPATH_ST = '-L%s' # template for adding libpaths
+ v.STLIB_ST = '-l%s'
+ v.STLIBPATH_ST = '-L%s'
+ v.RPATH_ST = '-Wl,-rpath,%s'
+
+ v.SONAME_ST = '-Wl,-h,%s'
+ v.SHLIB_MARKER = '-Wl,-Bdynamic'
+ v.STLIB_MARKER = '-Wl,-Bstatic'
+
+ v.cprogram_PATTERN = '%s'
+
+ v.CFLAGS_cshlib = ['-fPIC']
+ v.LINKFLAGS_cshlib = ['-shared']
+ v.cshlib_PATTERN = 'lib%s.so'
+
+ v.LINKFLAGS_cstlib = ['-Wl,-Bstatic']
+ v.cstlib_PATTERN = 'lib%s.a'
+
+ v.LINKFLAGS_MACBUNDLE = ['-bundle', '-undefined', 'dynamic_lookup']
+ v.CFLAGS_MACBUNDLE = ['-fPIC']
+ v.macbundle_PATTERN = '%s.bundle'
+
+@conf
+def gcc_modifier_win32(conf):
+ """Configuration flags for executing gcc on Windows"""
+ v = conf.env
+ v.cprogram_PATTERN = '%s.exe'
+
+ v.cshlib_PATTERN = '%s.dll'
+ v.implib_PATTERN = '%s.dll.a'
+ v.IMPLIB_ST = '-Wl,--out-implib,%s'
+
+ v.CFLAGS_cshlib = []
+
+ # Auto-import is enabled by default even without this option,
+ # but enabling it explicitly has the nice effect of suppressing the rather boring, debug-level messages
+ # that the linker emits otherwise.
+ v.append_value('LINKFLAGS', ['-Wl,--enable-auto-import'])
+
+@conf
+def gcc_modifier_cygwin(conf):
+ """Configuration flags for executing gcc on Cygwin"""
+ gcc_modifier_win32(conf)
+ v = conf.env
+ v.cshlib_PATTERN = 'cyg%s.dll'
+ v.append_value('LINKFLAGS_cshlib', ['-Wl,--enable-auto-image-base'])
+ v.CFLAGS_cshlib = []
+
+@conf
+def gcc_modifier_darwin(conf):
+ """Configuration flags for executing gcc on MacOS"""
+ v = conf.env
+ v.CFLAGS_cshlib = ['-fPIC']
+ v.LINKFLAGS_cshlib = ['-dynamiclib']
+ v.cshlib_PATTERN = 'lib%s.dylib'
+ v.FRAMEWORKPATH_ST = '-F%s'
+ v.FRAMEWORK_ST = ['-framework']
+ v.ARCH_ST = ['-arch']
+
+ v.LINKFLAGS_cstlib = []
+
+ v.SHLIB_MARKER = []
+ v.STLIB_MARKER = []
+ v.SONAME_ST = []
+
+@conf
+def gcc_modifier_aix(conf):
+ """Configuration flags for executing gcc on AIX"""
+ v = conf.env
+ v.LINKFLAGS_cprogram = ['-Wl,-brtl']
+ v.LINKFLAGS_cshlib = ['-shared','-Wl,-brtl,-bexpfull']
+ v.SHLIB_MARKER = []
+
+@conf
+def gcc_modifier_hpux(conf):
+ v = conf.env
+ v.SHLIB_MARKER = []
+ v.STLIB_MARKER = []
+ v.CFLAGS_cshlib = ['-fPIC','-DPIC']
+ v.cshlib_PATTERN = 'lib%s.sl'
+
+@conf
+def gcc_modifier_openbsd(conf):
+ conf.env.SONAME_ST = []
+
+@conf
+def gcc_modifier_osf1V(conf):
+ v = conf.env
+ v.SHLIB_MARKER = []
+ v.STLIB_MARKER = []
+ v.SONAME_ST = []
+
+@conf
+def gcc_modifier_platform(conf):
+ """Execute platform-specific functions based on *gcc_modifier_+NAME*"""
+ # * set configurations specific for a platform.
+ # * the destination platform is detected automatically by looking at the macros the compiler predefines,
+ # and if it's not recognised, it fallbacks to sys.platform.
+ gcc_modifier_func = getattr(conf, 'gcc_modifier_' + conf.env.DEST_OS, None)
+ if gcc_modifier_func:
+ gcc_modifier_func()
+
+def configure(conf):
+ """
+ Configuration for gcc
+ """
+ conf.find_gcc()
+ conf.find_ar()
+ conf.gcc_common_flags()
+ conf.gcc_modifier_platform()
+ conf.cc_load_tools()
+ conf.cc_add_flags()
+ conf.link_add_flags()
+ conf.check_gcc_o_space()
+