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meson: Derive defines from header/function names
This is what Autoconf already does for us, so just do this. Avoids people making typos while adding header or function checks. Because we use a config.h.meson, such typos won't even be noticed. Also, starting from Meson 0.36.0, the XCode 8 workaround that we use for clock_gettime is no longer needed.
This commit is contained in:
Nirbheek Chauhan
parent
2cc2fd7b77
commit
97f39cae63
2 changed files with 56 additions and 113 deletions
167
meson.build
167
meson.build
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@ -101,127 +101,82 @@ endforeach
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# FIXME: should really be called HOST_CPU or such
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cdata.set('TARGET_CPU', '"@0@"'.format(host_machine.cpu()))
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check_headers = [['dlfcn.h','HAVE_DLFCN_H'],
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['inttypes.h', 'HAVE_INTTYPES_H'],
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['memory.h', 'HAVE_MEMORY_H'],
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['poll.h', 'HAVE_POLL_H'],
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['stdint.h', 'HAVE_STDINT_H'],
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['stdio_ext.h', 'HAVE_STDIO_EXT_H'],
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['strings.h', 'HAVE_STRINGS_H'],
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['string.h', 'HAVE_STRING_H'],
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['sys/param.h', 'HAVE_SYS_PARAM_H'],
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['sys/poll.h', 'HAVE_SYS_POLL_H'],
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['sys/prctl.h', 'HAVE_SYS_PRCTL_H'],
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['sys/socket.h', 'HAVE_SYS_SOCKET_H'],
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['sys/stat.h', 'HAVE_SYS_STAT_H'],
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['sys/times.h', 'HAVE_SYS_TIMES_H'],
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['sys/time.h', 'HAVE_SYS_TIME_H'],
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['sys/types.h', 'HAVE_SYS_TYPES_H'],
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['sys/utsname.h', 'HAVE_SYS_UTSNAME_H'],
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['sys/wait.h', 'HAVE_SYS_WAIT_H'],
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['ucontext.h', 'HAVE_UCONTEXT_H'],
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['unistd.h', 'HAVE_UNISTD_H'],
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['valgrind/valgrind.h', 'HAVE_VALGRIND_VALGRIND_H'],
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['sys/resource.h', 'HAVE_SYS_RESOURCE_H'],
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check_headers = [
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'dlfcn.h',
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'inttypes.h',
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'memory.h',
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'poll.h',
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'stdint.h',
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'stdio_ext.h',
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'strings.h',
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'string.h',
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'sys/param.h',
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'sys/poll.h',
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'sys/prctl.h',
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'sys/socket.h',
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'sys/stat.h',
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'sys/times.h',
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'sys/time.h',
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'sys/types.h',
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'sys/utsname.h',
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'sys/wait.h',
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'ucontext.h',
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'unistd.h',
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'valgrind/valgrind.h',
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'sys/resource.h',
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]
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if host_machine.system() == 'windows'
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check_headers += [ ['winsock2.h', 'HAVE_WINSOCK2_H'] ]
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check_headers += ['winsock2.h']
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endif
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foreach h : check_headers
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if cc.has_header(h.get(0))
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cdata.set(h.get(1), 1)
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if cc.has_header(h)
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define = 'HAVE_' + h.underscorify().to_upper()
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cdata.set(define, 1)
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endif
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endforeach
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gmtoff_src = '''#include <time.h>
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int main(void) {
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struct tm t;
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t.tm_gmtoff = 0;
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return 0;
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}
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'''
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if cc.compiles(gmtoff_src, name : 'tm_gmtoff from time.h')
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if cc.has_member('struct tm', 'tm_gmtoff', prefix : '#include <time.h>')
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cdata.set('HAVE_TM_GMTOFF', 1)
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endif
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if cc.has_function('gmtime_r', prefix : '#include<time.h>')
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cdata.set('HAVE_GMTIME_R', 1)
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endif
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check_functions = [
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'gmtime_r',
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'sigaction',
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'getrusage',
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'fseeko',
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'ftello',
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'fsetpos',
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'fgetpos',
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'poll',
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'pselect',
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'getpagesize',
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'clock_gettime',
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# These are needed by libcheck
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'getline',
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'mkstemp',
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'alarm',
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'gettimeofday',
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]
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foreach f : check_functions
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if cc.has_function(f)
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define = 'HAVE_' + f.underscorify().to_upper()
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cdata.set(define, 1)
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endif
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endforeach
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cdata.set('HAVE_MMAP', 1)
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if cc.has_function('localtime_r', prefix : '#include<time.h>')
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cdata.set('HAVE_LOCALTIME_R', 1)
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# Needed by libcheck
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cdata.set('HAVE_DECL_LOCALTIME_R', 1)
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endif
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if cc.has_function('sigaction', prefix : '#include<signal.h>')
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cdata.set('HAVE_SIGACTION', 1)
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endif
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have_getrusage = cc.has_function('getrusage', prefix : '#include <sys/time.h>\n#include <sys/resource.h>')
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if have_getrusage
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cdata.set('HAVE_GETRUSAGE', 1)
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endif
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if cc.has_function('fseeko', prefix : '#include<stdio.h>')
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cdata.set('HAVE_FSEEKO', 1)
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endif
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if cc.has_function('ftello', prefix : '#include<stdio.h>')
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cdata.set('HAVE_FTELLO', 1)
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endif
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if cc.has_function('fsetpos', prefix : '#include<stdio.h>')
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cdata.set('HAVE_FSETPOS', 1)
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endif
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if cc.has_function('fgetpos', prefix : '#include<stdio.h>')
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cdata.set('HAVE_FGETPOS', 1)
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endif
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if cc.has_function('poll', prefix : '#include<poll.h>')
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cdata.set('HAVE_POLL', 1)
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endif
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if cc.has_function('pselect', prefix : '#include<sys/select.h>')
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cdata.set('HAVE_PSELECT', 1)
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endif
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cdata.set('HAVE_MMAP', 1)
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if cc.has_function('posix_memalign', prefix : '#include<stdlib.h>')
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cdata.set('HAVE_POSIX_MEMALIGN', 1)
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endif
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if cc.has_function('getpagesize', prefix : '#include<unistd.h>')
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cdata.set('HAVE_GETPAGESIZE', 1)
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endif
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# With XCode 8, clock_gettime will be incorrectly detected as being available
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# regardless of what version of OS X you target because the symbol is available
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# in the .tbd file as a weak symbol.
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# See: https://bugzilla.gnome.org/show_bug.cgi?id=772451
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#
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# We cannot simply do cc.has_function with -Wl,-no_weak_imports because the
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# check does its own prototype decl that doesn't trigger that compiler flag.
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#
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# It's only starting from macOS 10.12 and iOS 10.0 that clock_gettime is
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# actually available, so we can unconditionally disable it for older versions.
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disable_clock_gettime_src = '''#include <AvailabilityMacros.h>
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#include <TargetConditionals.h>
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#if defined(TARGET_OS_MAC)
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# if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
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# error "Not compiling for OS X 10.12 or later"
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# endif
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#else
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# if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_10_0
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# error "Not compiling for iOS 10.0 or later"
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# endif
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#endif
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'''
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if cc.has_function('clock_gettime', prefix : '#include <time.h>')
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if host_machine.system() == 'darwin'
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if cc.compiles(disable_clock_gettime_src, name : 'target darwin/ios version has clock_gettime')
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cdata.set('HAVE_CLOCK_GETTIME', 1)
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endif
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else
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cdata.set('HAVE_CLOCK_GETTIME', 1)
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endif
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endif
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# We only want to use the __declspec(dllexport/import) dance in GST_EXPORT when
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# building with MSVC
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@ -244,24 +199,12 @@ if cc.has_function('strdup', prefix : '#include <string.h>')
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elif cc.has_function('_strdup', prefix : '#include <string.h>')
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cdata.set('HAVE__STRDUP', 1) # Windows (MSVC)
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endif
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if cc.has_function('getline', prefix : '#include <stdio.h>')
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cdata.set('HAVE_GETLINE', 1)
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endif
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if cc.has_function('mkstemp', prefix : '#include <stdlib.h>')
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cdata.set('HAVE_MKSTEMP', 1)
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endif
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if host_machine.system() != 'windows'
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cdata.set('HAVE_FORK', 1)
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else
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# libcheck requires HAVE_FORK to be 0 when fork() is not available
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cdata.set('HAVE_FORK', 0)
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endif
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if cc.has_function('alarm', prefix : '#include <unistd.h>')
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cdata.set('HAVE_ALARM', 1)
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endif
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if cc.has_function('gettimeofday', prefix : '#include <sys/time.h>')
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cdata.set('HAVE_GETTIMEOFDAY', 1)
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endif
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if cc.has_function('strsignal', prefix : '#include <string.h>')
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cdata.set('HAVE_DECL_STRSIGNAL', 1)
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endif
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@ -9,7 +9,7 @@ if not disable_gst_debug
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gst_tracers_sources += ['gstlog.c']
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endif
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if have_getrusage
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if cdata.has('HAVE_GETRUSAGE')
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gst_tracers_sources += ['gstrusage.c']
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endif
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