Use ConfigToolDependency for pcap

mesonbuild/dependencies/base.py

@@ -46,8 +46,6 @@ class DependencyMethods(Enum):
     QMAKE = 'qmake'
     # Just specify the standard link arguments, assuming the operating system provides the library.
     SYSTEM = 'system'
-    # Detect using pcap-config
-    PCAPCONFIG = 'pcap-config'
     # Detect using libwmf-config
     LIBWMFCONFIG = 'libwmf-config'
     # This is only supported on OSX - search the frameworks directory by name.
@@ -59,6 +57,7 @@ class DependencyMethods(Enum):
     # For backewards compatibility
     SDLCONFIG = 'sdlconfig'
     CUPSCONFIG = 'cups-config'
+    PCAPCONFIG = 'pcap-config'
 
 
 class Dependency:
@@ -78,7 +77,8 @@ class Dependency:
 
         # This sets per-too config methods which are deprecated to to the new
         # generic CONFIG_TOOL value.
-        if method in [DependencyMethods.SDLCONFIG, DependencyMethods.CUPSCONFIG]:
+        if method in [DependencyMethods.SDLCONFIG, DependencyMethods.CUPSCONFIG,
+                      DependencyMethods.PCAPCONFIG]:
             mlog.warning(textwrap.dedent("""\
                 Configuration method {} has been deprecated in favor of
                 'config-tool'. This will be removed in a future version of

mesonbuild/dependencies/misc.py

@@ -26,8 +26,11 @@ from .. import mesonlib
 from ..mesonlib import Popen_safe, extract_as_list
 from ..environment import detect_cpu_family
 
-from .base import DependencyException, DependencyMethods
-from .base import ExternalDependency, ExternalProgram, ExtraFrameworkDependency, PkgConfigDependency
+from .base import (
+    DependencyException, DependencyMethods, ExternalDependency,
+    ExternalProgram, ExtraFrameworkDependency, PkgConfigDependency,
+    ConfigToolDependency,
+)
 
 # On windows 3 directory layouts are supported:
 # * The default layout (versioned) installed:
@@ -687,9 +690,9 @@ class Python3Dependency(ExternalDependency):
 class PcapDependency(ExternalDependency):
     def __init__(self, environment, kwargs):
         super().__init__('pcap', environment, None, kwargs)
+        kwargs['required'] = False
         if DependencyMethods.PKGCONFIG in self.methods:
             try:
-                kwargs['required'] = False
                 pcdep = PkgConfigDependency('pcap', environment, kwargs)
                 if pcdep.found():
                     self.type_name = 'pkgconfig'
@@ -700,25 +703,26 @@ class PcapDependency(ExternalDependency):
                     return
             except Exception as e:
                 mlog.debug('Pcap not found via pkgconfig. Trying next, error was:', str(e))
-        if DependencyMethods.PCAPCONFIG in self.methods:
-            pcapconf = shutil.which('pcap-config')
-            if pcapconf:
-                stdo = Popen_safe(['pcap-config', '--cflags'])[1]
-                self.compile_args = stdo.strip().split()
-                stdo = Popen_safe(['pcap-config', '--libs'])[1]
-                self.link_args = stdo.strip().split()
-                self.version = self.get_pcap_lib_version()
-                self.is_found = True
-                mlog.log('Dependency', mlog.bold('pcap'), 'found:',
-                         mlog.green('YES'), '(%s)' % pcapconf)
-                return
-            mlog.debug('Could not find pcap-config binary, trying next.')
+        if DependencyMethods.CONFIG_TOOL in self.methods:
+            try:
+                ctdep = ConfigToolDependency.factory(
+                    'pcap', environment, None, kwargs, ['pcap-config'], 'pcap-config')
+                if ctdep.found():
+                    self.config = ctdep.config
+                    self.type_name = 'config-tool'
+                    self.compile_args = ctdep.get_config_value(['--cflags'], 'compile_args')
+                    self.link_args = ctdep.get_config_value(['--libs'], 'link_args')
+                    self.version = self.get_pcap_lib_version()
+                    self.is_found = True
+                    return
+            except Exception as e:
+                mlog.debug('Pcap not found via pcap-config. Trying next, error was:', str(e))
 
     def get_methods(self):
         if mesonlib.is_osx():
-            return [DependencyMethods.PKGCONFIG, DependencyMethods.PCAPCONFIG, DependencyMethods.EXTRAFRAMEWORK]
+            return [DependencyMethods.PKGCONFIG, DependencyMethods.CONFIG_TOOL, DependencyMethods.EXTRAFRAMEWORK]
         else:
-            return [DependencyMethods.PKGCONFIG, DependencyMethods.PCAPCONFIG]
+            return [DependencyMethods.PKGCONFIG, DependencyMethods.CONFIG_TOOL]
 
     def get_pcap_lib_version(self):
         return self.compiler.get_return_value('pcap_lib_version', 'string',

test cases/frameworks/19 pcap/meson.build

@@ -8,3 +8,7 @@ assert(pcap_ver.split('.').length() > 1, 'pcap version is "@0@"'.format(pcap_ver
 e = executable('pcap_prog', 'pcap_prog.c', dependencies : pcap_dep)
 
 test('pcaptest', e)
+
+# Ensure discovery bia the configuration tools work also
+pcap_dep = dependency('pcap', version : '>=1.0', method : 'pcap-config')
+pcap_dep = dependency('pcap', version : '>=1.0', method : 'config-tool')