Greg Ward | 170bdc0 | 1999-07-10 02:04:22 +0000 | [diff] [blame^] | 1 | """distutils.unixccompiler |
| 2 | |
| 3 | Contains the UnixCCompiler class, a subclass of CCompiler that handles |
| 4 | the "typical" Unix-style command-line C compiler: |
| 5 | * macros defined with -Dname[=value] |
| 6 | * macros undefined with -Uname |
| 7 | * include search directories specified with -Idir |
| 8 | * libraries specified with -lllib |
| 9 | * library search directories specified with -Ldir |
| 10 | * compile handled by 'cc' (or similar) executable with -c option: |
| 11 | compiles .c to .o |
| 12 | * link static library handled by 'ar' command (possibly with 'ranlib') |
| 13 | * link shared library handled by 'cc -shared' |
| 14 | """ |
| 15 | |
| 16 | # created 1999/07/05, Greg Ward |
| 17 | |
| 18 | __rcsid__ = "$Id$" |
| 19 | |
| 20 | import string |
| 21 | from types import * |
| 22 | from sysconfig import \ |
| 23 | CC, CCSHARED, CFLAGS, OPT, LDSHARED, LDFLAGS, RANLIB, AR, SO |
| 24 | from ccompiler import CCompiler |
| 25 | |
| 26 | |
| 27 | # XXX Things not currently handled: |
| 28 | # * optimization/debug/warning flags; we just use whatever's in Python's |
| 29 | # Makefile and live with it. Is this adequate? If not, we might |
| 30 | # have to have a bunch of subclasses GNUCCompiler, SGICCompiler, |
| 31 | # SunCCompiler, and I suspect down that road lies madness. |
| 32 | # * even if we don't know a warning flag from an optimization flag, |
| 33 | # we need some way for outsiders to feed preprocessor/compiler/linker |
| 34 | # flags in to us -- eg. a sysadmin might want to mandate certain flags |
| 35 | # via a site config file, or a user might want to set something for |
| 36 | # compiling this module distribution only via the setup.py command |
| 37 | # line, whatever. As long as these options come from something on the |
| 38 | # current system, they can be as system-dependent as they like, and we |
| 39 | # should just happily stuff them into the preprocessor/compiler/linker |
| 40 | # options and carry on. |
| 41 | |
| 42 | |
| 43 | class UnixCCompiler (CCompiler): |
| 44 | |
| 45 | # XXX any -I and -D options that we get from Makefile (via sysconfig) |
| 46 | # are preserved, but not treated specially: that is, they are not put |
| 47 | # in the self.include_dirs and self.macros, etc. lists that we inherit |
| 48 | # from CCompiler. I'm not sure if this is right, wrong or indifferent, |
| 49 | # but it should probably be a documented part of the CCompiler API: |
| 50 | # ie. there are *three* kinds of include directories, those from the |
| 51 | # compiler, those from Python's Makefiles, and those supplied to |
| 52 | # {add,set}_include_dirs() -- and 'set_include_dirs()' only overrides |
| 53 | # the last kind! I suspect the same applies to libraries and library |
| 54 | # directories -- anything else? |
| 55 | |
| 56 | def __init__ (self): |
| 57 | |
| 58 | CCompiler.__init__ (self) |
| 59 | |
| 60 | self.preprocess_options = None |
| 61 | self.compile_options = None |
| 62 | |
| 63 | # munge CC and OPT together in case there are flags stuck in CC |
| 64 | (self.cc, self.ccflags) = \ |
| 65 | _split_command (CC + ' ' + OPT) |
| 66 | self.ccflags_shared = string.split (CCSHARED) |
| 67 | |
| 68 | (self.ld_shared, self.ldflags_shared) = \ |
| 69 | _split_command (LDSHARED) |
| 70 | |
| 71 | |
| 72 | def compile (self, |
| 73 | sources, |
| 74 | macros=[], |
| 75 | includes=[]): |
| 76 | |
| 77 | if type (macros) is not ListType: |
| 78 | raise TypeError, \ |
| 79 | "'macros' (if supplied) must be a list of tuples" |
| 80 | if type (includes) is not ListType: |
| 81 | raise TypeError, \ |
| 82 | "'includes' (if supplied) must be a list of strings" |
| 83 | |
| 84 | pp_opts = _gen_preprocess_options (self.macros + macros, |
| 85 | self.include_dirs + includes) |
| 86 | |
| 87 | # use of ccflags_shared means we're blithely assuming that we're |
| 88 | # compiling for inclusion in a shared object! (will have to fix |
| 89 | # this when I add the ability to build a new Python) |
| 90 | cc_args = ['-c'] + pp_opts + \ |
| 91 | self.ccflags + self.ccflags_shared + \ |
| 92 | sources |
| 93 | |
| 94 | # this will change to 'spawn' when I have it! |
| 95 | print string.join ([self.cc] + cc_args, ' ') |
| 96 | |
| 97 | |
| 98 | # XXX punting on 'link_static_lib()' for now -- it might be better for |
| 99 | # CCompiler to mandate just 'link_binary()' or some such to build a new |
| 100 | # Python binary; it would then take care of linking in everything |
| 101 | # needed for the new Python without messing with an intermediate static |
| 102 | # library. |
| 103 | |
| 104 | def link_shared_lib (self, |
| 105 | objects, |
| 106 | output_libname, |
| 107 | libraries=None, |
| 108 | library_dirs=None): |
| 109 | # XXX should we sanity check the library name? (eg. no |
| 110 | # slashes) |
| 111 | self.link_shared_object (objects, "lib%s%s" % (output_libname, SO)) |
| 112 | |
| 113 | |
| 114 | def link_shared_object (self, |
| 115 | objects, |
| 116 | output_filename, |
| 117 | libraries=[], |
| 118 | library_dirs=[]): |
| 119 | |
| 120 | lib_opts = _gen_lib_options (self.libraries + libraries, |
| 121 | self.library_dirs + library_dirs) |
| 122 | ld_args = self.ldflags_shared + lib_opts + \ |
| 123 | objects + ['-o', output_filename] |
| 124 | |
| 125 | print string.join ([self.ld_shared] + ld_args, ' ') |
| 126 | |
| 127 | |
| 128 | # class UnixCCompiler |
| 129 | |
| 130 | |
| 131 | def _split_command (cmd): |
| 132 | """Split a command string up into the progam to run (a string) and |
| 133 | the list of arguments; return them as (cmd, arglist).""" |
| 134 | args = string.split (cmd) |
| 135 | return (args[0], args[1:]) |
| 136 | |
| 137 | |
| 138 | def _gen_preprocess_options (macros, includes): |
| 139 | |
| 140 | # XXX it would be nice (mainly aesthetic, and so we don't generate |
| 141 | # stupid-looking command lines) to go over 'macros' and eliminate |
| 142 | # redundant definitions/undefinitions (ie. ensure that only the |
| 143 | # latest mention of a particular macro winds up on the command |
| 144 | # line). I don't think it's essential, though, since most (all?) |
| 145 | # Unix C compilers only pay attention to the latest -D or -U |
| 146 | # mention of a macro on their command line. Similar situation for |
| 147 | # 'includes'. I'm punting on both for now. Anyways, weeding out |
| 148 | # redundancies like this should probably be the province of |
| 149 | # CCompiler, since the data structures used are inherited from it |
| 150 | # and therefore common to all CCompiler classes. |
| 151 | |
| 152 | |
| 153 | pp_opts = [] |
| 154 | for macro in macros: |
| 155 | if len (macro) == 1: # undefine this macro |
| 156 | pp_opts.append ("-U%s" % macro[0]) |
| 157 | elif len (macro) == 2: |
| 158 | if macro[1] is None: # define with no explicit value |
| 159 | pp_opts.append ("-D%s" % macro[0]) |
| 160 | else: |
| 161 | # XXX *don't* need to be clever about quoting the |
| 162 | # macro value here, because we're going to avoid the |
| 163 | # shell at all costs when we spawn the command! |
| 164 | pp_opts.append ("-D%s=%s" % macro) |
| 165 | |
| 166 | for dir in includes: |
| 167 | pp_opts.append ("-I%s" % dir) |
| 168 | |
| 169 | return pp_opts |
| 170 | |
| 171 | # _gen_preprocess_options () |
| 172 | |
| 173 | |
| 174 | def _gen_lib_options (libraries, library_dirs): |
| 175 | |
| 176 | lib_opts = [] |
| 177 | |
| 178 | for dir in library_dirs: |
| 179 | lib_opts.append ("-L%s" % dir) |
| 180 | |
| 181 | # XXX it's important that we *not* remove redundant library mentions! |
| 182 | # sometimes you really do have to say "-lfoo -lbar -lfoo" in order to |
| 183 | # resolve all symbols. I just hope we never have to say "-lfoo obj.o |
| 184 | # -lbar" to get things to work -- that's certainly a possibility, but a |
| 185 | # pretty nasty way to arrange your C code. |
| 186 | |
| 187 | for lib in libraries: |
| 188 | lib_opts.append ("-l%s" % lib) |
| 189 | |
| 190 | return lib_opts |
| 191 | |
| 192 | # _gen_lib_options () |