gmoduleconf_conf = configuration_data()

g_module_need_uscore = 0

g_module_broken_rtld_global = 0

g_module_have_dlerror = 0

libdl_dep = [ ]

g_module_lib_args = [ ]

g_module_impl = ''

dlopen_dlsym_test_code = '''

#include <dlfcn.h>

int glib_underscore_test (void) { return 42; }

int main (int argc, char ** argv) {

  void *f1 = (void*)0, *f2 = (void*)0, *handle;

  handle = dlopen ((void*)0, 0);

  if (handle) {

    f1 = dlsym (handle, "glib_underscore_test");

    f2 = dlsym (handle, "_glib_underscore_test");

  }

  return (!f2 || f1);

}'''

# On Windows force native WIN32 shared lib loader

if host_system == 'windows'

  g_module_impl = 'G_MODULE_IMPL_WIN32'

# Force native AIX library loader

# dlopen() filepath must be of the form /path/libname.a(libname.so)

elif host_system == 'aix'

  g_module_impl = 'G_MODULE_IMPL_AR'

elif cc.links(dlopen_dlsym_test_code, name : 'dlopen() and dlsym() in system libraries')

  g_module_impl = 'G_MODULE_IMPL_DL'

# NSLinkModule (dyld) in system libraries (Darwin)

elif cc.has_function('NSLinkModule')

  g_module_impl = 'G_MODULE_IMPL_DYLD'

  g_module_need_uscore = 1

elif cc.links(dlopen_dlsym_test_code, args : '-ldl', name : 'dlopen() and dlsym() in libdl')

  g_module_impl = 'G_MODULE_IMPL_DL'

  libdl_dep = cc.find_library('dl')

  g_module_lib_args = '-ldl'

endif

# additional checks for G_MODULE_IMPL_DL

if g_module_impl == 'G_MODULE_IMPL_DL'

  # FIXME: check for OSF1/5.0 RTLD_GLOBAL brokenness (is this still relevant?)

  # Check whether we need preceding underscores

  if cc.get_id() == 'msvc'

    message('Building for MSVC: assuming that symbols are prefixed with underscore')

    g_module_need_uscore = 1

  elif meson.has_exe_wrapper()

    # FIXME: communicate result via stdout instead of return value, so non-0 return is not printed in bold red

    rres = cc.run(dlopen_dlsym_test_code,

                  args : g_module_lib_args,

                  name : 'dlsym() preceding underscores')

    if host_system == 'windows' or rres.returncode() == 0

      g_module_need_uscore = 1

    endif

  else

    message('Cross-compiling: assuming that symbols aren\'t prefixed with underscore')

    g_module_need_uscore = 0

  endif

  if cc.has_function('dlerror', args : g_module_lib_args)

    g_module_have_dlerror = 1

  endif

endif

# Done, have we got an implementation?

if g_module_impl == ''

  g_module_impl = '0'

  message('WARNING: No suitable GModule implementation found!')

endif

gmoduleconf_conf.set('G_MODULE_IMPL', g_module_impl)

gmoduleconf_conf.set('G_MODULE_SUPPORTED', g_module_impl != '0')

gmoduleconf_conf.set('G_MODULE_HAVE_DLERROR', g_module_have_dlerror)

gmoduleconf_conf.set('G_MODULE_NEED_USCORE', g_module_need_uscore)

gmoduleconf_conf.set('G_MODULE_BROKEN_RTLD_GLOBAL', g_module_broken_rtld_global)

gmoduleconf_h = configure_file(input : 'gmoduleconf.h.in',

                               output : 'gmoduleconf.h',

                               configuration : gmoduleconf_conf)

install_headers(['gmodule.h'], subdir : 'glib-2.0')

gmodule_sources = ['gmodule.c']

if host_system == 'windows'

  gmodule_win_rc = configure_file(

    input: 'gmodule.rc.in',

    output: 'gmodule.rc',

    configuration: glibconfig_conf,

  )

  gmodule_win_res = windows.compile_resources(gmodule_win_rc)

  gmodule_sources += [gmodule_win_res]

endif

libgmodule = library('gmodule-2.0',

  sources : gmodule_sources,

  version : library_version,

  soversion : soversion,

  install : true,

  include_directories : [configinc, gmoduleinc],

  dependencies : [libdl_dep, libglib_dep],

  c_args : ['-DG_LOG_DOMAIN="GModule"', '-DG_DISABLE_DEPRECATED'] + glib_hidden_visibility_args)

libgmodule_dep = declare_dependency(link_with : libgmodule,

  include_directories : gmoduleinc)