diff options
Diffstat (limited to 'mesonbuild/compilers/c.py')
| -rw-r--r-- | mesonbuild/compilers/c.py | 108 |
1 files changed, 74 insertions, 34 deletions
diff --git a/mesonbuild/compilers/c.py b/mesonbuild/compilers/c.py index 8af7abc..b62155b 100644 --- a/mesonbuild/compilers/c.py +++ b/mesonbuild/compilers/c.py @@ -12,14 +12,17 @@ # See the License for the specific language governing permissions and # limitations under the License. -import subprocess, os.path, re +import re +import glob +import os.path +import subprocess from .. import mlog from .. import coredata from . import compilers from ..mesonlib import ( EnvironmentException, version_compare, Popen_safe, listify, - for_windows, for_darwin, for_cygwin, for_haiku, + for_windows, for_darwin, for_cygwin, for_haiku, for_openbsd, ) from .compilers import ( @@ -800,6 +803,22 @@ class CCompiler(Compiler): return False raise RuntimeError('BUG: {!r} check failed unexpectedly'.format(n)) + def _get_patterns(self, env, prefixes, suffixes, shared=False): + patterns = [] + for p in prefixes: + for s in suffixes: + patterns.append(p + '{}.' + s) + if shared and for_openbsd(self.is_cross, env): + # Shared libraries on OpenBSD can be named libfoo.so.X.Y: + # https://www.openbsd.org/faq/ports/specialtopics.html#SharedLibs + # + # This globbing is probably the best matching we can do since regex + # is expensive. It's wrong in many edge cases, but it will match + # correctly-named libraries and hopefully no one on OpenBSD names + # their files libfoo.so.9a.7b.1.0 + patterns.append('lib{}.so.[0-9]*.[0-9]*') + return patterns + def get_library_naming(self, env, libtype, strict=False): ''' Get library prefixes and suffixes for the target platform ordered by @@ -830,18 +849,37 @@ class CCompiler(Compiler): else: # Linux/BSDs shlibext = ['so'] + patterns = [] # Search priority if libtype in ('default', 'shared-static'): - suffixes = shlibext + stlibext + patterns += self._get_patterns(env, prefixes, shlibext, True) + patterns += self._get_patterns(env, prefixes, stlibext, False) elif libtype == 'static-shared': - suffixes = stlibext + shlibext + patterns += self._get_patterns(env, prefixes, stlibext, False) + patterns += self._get_patterns(env, prefixes, shlibext, True) elif libtype == 'shared': - suffixes = shlibext + patterns += self._get_patterns(env, prefixes, shlibext, True) elif libtype == 'static': - suffixes = stlibext + patterns += self._get_patterns(env, prefixes, stlibext, False) else: raise AssertionError('BUG: unknown libtype {!r}'.format(libtype)) - return prefixes, suffixes + return patterns + + @staticmethod + def _get_trials_from_pattern(pattern, directory, libname): + f = os.path.join(directory, pattern.format(libname)) + if '*' in pattern: + # NOTE: globbing matches directories and broken symlinks + # so we have to do an isfile test on it later + return glob.glob(f) + return [f] + + @staticmethod + def _get_file_from_list(files): + for f in files: + if os.path.isfile(f): + return f + return None def find_library_real(self, libname, env, extra_dirs, code, libtype): # First try if we can just add the library as -l. @@ -851,36 +889,38 @@ class CCompiler(Compiler): args = ['-l' + libname] if self.links(code, env, extra_args=args): return args - # Search in the system libraries too - system_dirs = self.get_library_dirs() # Not found or we want to use a specific libtype? Try to find the # library file itself. - prefixes, suffixes = self.get_library_naming(env, libtype) - # Triply-nested loops! + patterns = self.get_library_naming(env, libtype) for d in extra_dirs: - for suffix in suffixes: - for prefix in prefixes: - trial = os.path.join(d, prefix + libname + '.' + suffix) - if os.path.isfile(trial): - return [trial] - for d in system_dirs: - for suffix in suffixes: - for prefix in prefixes: - trial = os.path.join(d, prefix + libname + '.' + suffix) - # When searching the system paths used by the compiler, we - # need to check linking with link-whole, as static libs - # (.a) need to be checked to ensure they are the right - # architecture, e.g. 32bit or 64-bit. - # Just a normal test link won't work as the .a file doesn't - # seem to be checked by linker if there are no unresolved - # symbols from the main C file. - extra_link_args = self.get_link_whole_for([trial]) - extra_link_args = self.linker_to_compiler_args(extra_link_args) - if (os.path.isfile(trial) and - self.links(code, env, - extra_args=extra_link_args)): - return [trial] - # XXX: For OpenBSD and macOS we (may) need to search for libfoo.x{,.y.z}.ext + for p in patterns: + trial = self._get_trials_from_pattern(p, d, libname) + if not trial: + continue + trial = self._get_file_from_list(trial) + if not trial: + continue + return [trial] + # Search in the system libraries too + for d in self.get_library_dirs(): + for p in patterns: + trial = self._get_trials_from_pattern(p, d, libname) + if not trial: + continue + trial = self._get_file_from_list(trial) + if not trial: + continue + # When searching the system paths used by the compiler, we + # need to check linking with link-whole, as static libs + # (.a) need to be checked to ensure they are the right + # architecture, e.g. 32bit or 64-bit. + # Just a normal test link won't work as the .a file doesn't + # seem to be checked by linker if there are no unresolved + # symbols from the main C file. + extra_link_args = self.get_link_whole_for([trial]) + extra_link_args = self.linker_to_compiler_args(extra_link_args) + if self.links(code, env, extra_args=extra_link_args): + return [trial] return None def find_library_impl(self, libname, env, extra_dirs, code, libtype): |