add detailed summary

lcm-java/meson.build

@@ -1,11 +1,40 @@
 lcm_java_sources = ['lcm/util/JImage.java', 'lcm/util/TableSorter.java', 'lcm/util/BufferedRandomAccessFile.java', 'lcm/util/ParameterListener.java', 'lcm/util/ParameterGUI.java', 'lcm/util/ClassDiscoverer.java', 'lcm/util/ColorMapper.java', 'lcm/spy/Spy.java', 'lcm/spy/ObjectPanel.java', 'lcm/spy/ChartData.java', 'lcm/spy/ChannelData.java', 'lcm/spy/ZoomableChartScrollWheel.java', 'lcm/spy/SpyPlugin.java', 'lcm/spy/LCMTypeDatabase.java', 'lcm/logging/LogDiagnostic.java', 'lcm/logging/JScrubber.java', 'lcm/logging/JScrubberListener.java', 'lcm/logging/Log.java', 'lcm/logging/LogPlayer.java', 'lcm/lcm/LCMDataOutputStream.java', 'lcm/lcm/Provider.java', 'lcm/lcm/LCMDataInputStream.java', 'lcm/lcm/UDPMulticastProvider.java', 'lcm/lcm/LCMSubscriber.java', 'lcm/lcm/URLParser.java', 'lcm/lcm/MessageAggregator.java', 'lcm/lcm/MemqProvider.java', 'lcm/lcm/LCMEncodable.java', 'lcm/lcm/LCM.java', 'lcm/lcm/LogFileProvider.java', 'lcm/lcm/TCPProvider.java', 'lcm/lcm/TCPService.java']
+lcm_java_doc_classes = ['lcm/lcm/LCM.java', 'lcm/lcm/LCMEncodable.java', 'lcm/lcm/LCMSubscriber.java', 'lcm/lcm/MessageAggregator.java', 'lcm/logging/Log.java']
 
-jar('lcm-java',
-  lcm_java_sources,
-  install_dir : 'share/java')
+proceed_build = 'yes'
+error_messages = ['Java is not currently supported! Try at your own risk.']
 
-lcm_java_doc_classes = ['lcm/lcm/LCM.java', 'lcm/lcm/LCMEncodable.java', 'lcm/lcm/LCMSubscriber.java', 'lcm/lcm/MessageAggregator.java', 'lcm/logging/Log.java']
+if get_option('lcm_enable_java').disabled()
+  proceed_build = disabler()
+  error_messages += ['Meson configured with -Dlcm_enable_java=disabled']
+elif not add_languages('java', required : get_option('lcm_enable_java').enabled())
+  proceed_build = disabler()
+  error_messages += ['Missing dependency java']
+else
+  jchart2d_dep = dependency('jchart2d', required : get_option('lcm_enable_java').enabled())
+  if not jchart2d_dep.found()
+    proceed_build = disabler()
+    error_messages += ['Missing dependency jchart2d']
+  endif
+endif
+
+if not is_disabler(proceed_build)
+  jar('lcm-java',
+    lcm_java_sources,
+    install_dir : 'share/java')
+  jar('doc-java',
+    lcm_java_doc_classes,
+    install_dir : 'docs/_build/javadocs')
+endif
+
+summary(
+  {'Build Java bindings and utilities' : not is_disabler(proceed_build)},
+  section : 'Options',
+  bool_yn : true)
+if error_messages.length() > 0
+  summary({'- Build Java bindings and utilities error(s)': error_messages},
+    section: 'Options')
+endif
 
-jar('doc-java',
-  lcm_java_doc_classes,
-  install_dir : 'docs/_build/javadocs')
+unset_variable('error_messages')
+unset_variable('proceed_build')

lcm-lua/meson.build

@@ -1,6 +1,33 @@
 lcm_lua_sources = ['init.c', 'lualcm_hash.c', 'lualcm_lcm.c', 'lualcm_pack.c', 'lua_ref_helper.c', 'utf8_check.c']
 
-lcm_lua_lib = library('lcm-lua', lcm_lua_sources,
-  c_args : '-Wextra',
-  dependencies : [lcm_lib_dep, lua_dep],
-  install : true)
+proceed_build = 'yes'
+error_messages = []
+
+if get_option('lcm_enable_lua').disabled()
+  proceed_build = disabler()
+  error_messages += ['Meson configured with -Dlcm_enable_lua=disabled']
+else 
+  lua_dep = dependency('lua', required : get_option('lcm_enable_lua').enabled())
+  if not lua_dep.found()
+    proceed_build = disabler()
+    error_messages += ['Missing dependency lua']
+  endif
+endif
+
+if not is_disabler(proceed_build)
+  lcm_lua_lib = library('lcm-lua', lcm_lua_sources,
+    c_args : '-Wextra',
+    dependencies : [lcm_lib_dep, lua_dep],
+    install : true)
+endif
+
+summary({'Build Lua bindings and utilities': not is_disabler(proceed_build)},
+        section: 'Options',
+        bool_yn: true)
+if error_messages.length() > 0
+    summary({'- Build Lua bindings and utilities error(s)': error_messages},
+        section: 'Options')
+endif
+
+unset_variable('error_messages')
+unset_variable('proceed_build')

lcm-python/meson.build

@@ -1,28 +1,54 @@
-py_installation = pymod.find_installation()
-python_site = py_installation.get_path('platlib').replace(py_installation.get_path('data') / '', '')
-python_include = py_installation.get_path('include')
-
 lcm_python_sources = ['module.c', 'pyeventlog.c', 'pylcm.c', 'pylcm_subscription.c']
 
-if windows
-  # lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
-  #   dependencies : lcm_static_lib_dep,
-  #   include_directories : include_directories(python_include),
-  #   install : true)
-  message('Python not currently supported in this LCM build for Windows')
-elif host_machine.system() == 'darwin' #macos
-  lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
-    dependencies : lcm_static_lib_dep,
-    include_directories : include_directories(python_include),
-    link_args : '-undefined dynamic_lookup -Wl,-no_fixup_chains',
-    install : true)
+proceed_build = 'yes'
+error_messages = []
+
+if get_option('lcm_enable_python').disabled()
+  proceed_build = disabler()
+  error_messages += ['Meson configured with -Dlcm_enable_python=disabled']
 else
-  lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
-    dependencies : lcm_static_lib_dep,
-    include_directories : include_directories(python_include),
-    install_dir : python_site + '/lcm',
-    install : true)
+  pymod = import('python', required : get_option('lcm_enable_lua').enabled())
+  if not pymod.found()
+    proceed_build = disabler()
+    error_messages += ['Missing dependency python']
+  endif
+endif
+
+if not is_disabler(proceed_build)
+  py_installation = pymod.find_installation()
+  python_site = py_installation.get_path('platlib').replace(py_installation.get_path('data') / '', '')
+  python_include = py_installation.get_path('include')
+  if windows
+    # lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
+    #   dependencies : lcm_static_lib_dep,
+    #   include_directories : include_directories(python_include),
+    #   install : true)
+    error_messages += ['Python not currently supported in this LCM build for Windows! Not building.']
+  elif host_machine.system() == 'darwin' #macos
+    lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
+      dependencies : lcm_static_lib_dep,
+      include_directories : include_directories(python_include),
+      link_args : '-undefined dynamic_lookup -Wl,-no_fixup_chains',
+      install : true)
+  else
+    lcm_python_lib = py_installation.extension_module('lcm', lcm_python_sources,
+      dependencies : lcm_static_lib_dep,
+      include_directories : include_directories(python_include),
+      install_dir : python_site + '/lcm',
+      install : true)
+  endif
+
+  install_data('lcm/__init__.py', install_dir :'python/lcm')
+  install_data('lcm/__init__.py', install_dir :python_site + '/lcm')
+endif
+
+summary({'Build Python bindings and utilities': not is_disabler(proceed_build)},
+        section: 'Options',
+        bool_yn: true)
+if error_messages.length() > 0
+    summary({'- Build Python bindings and utilities error(s)': error_messages},
+        section: 'Options')
 endif
 
-install_data('lcm/__init__.py', install_dir :'python/lcm')
-install_data('lcm/__init__.py', install_dir :python_site + '/lcm')
+unset_variable('error_messages')
+unset_variable('proceed_build')

meson.build

@@ -18,7 +18,7 @@ if windows
   ws2_32 = cpp.find_library('ws2_32')
 endif
 
-# Core modules
+### Core modules ###
 # lcm-gen compiles with warnings that cannot be disabled when lcm is used
 # as a Meson subproject in a parent project with more warnings enabled. Allow
 # parent projects to disable compilation of lcm-gen to fix warnings as needed.
@@ -40,29 +40,15 @@ if not get_option('lcm_enable_examples').disabled()
   subdir('liblcm-test')
 endif
 
+### Extra modules ###
 # Python (Work in progress)
 # Currently doesn't compile for Windows
-if not get_option('lcm_enable_python').disabled()
-  pymod = import('python', required : get_option('lcm_enable_python'))
-  if pymod.found()
-    subdir('lcm-python')
-  endif
-endif
-
+subdir('lcm-python')
 # Java (Work in progress)
 # Not working and need jchart2d dependencies or subproject build
-# if not get_option('lcm_enable_java').disabled()
-#   add_languages('java')
-#   subdir('lcm-java')
-# endif
-
+subdir('lcm-java')
 # Lua
-if not get_option('lcm_enable_lua').disabled()
-  lua_dep = dependency('lua', required : get_option('lcm_enable_lua'))
-  if lua_dep.found()
-    subdir('lcm-lua')
-  endif
-endif
+subdir('lcm-lua')
 
 # Disabled because require pro meson wizardry to support without user-defined functions
 # Unit tests
@@ -80,13 +66,24 @@ if not get_option('lcm_install_pkgconfig').disabled()
   subdir('lcm-pkgconfig')
 endif
 
-summary({'Build test and example programs': get_option('lcm_enable_examples'),
-        'Build Python bindings and utilities': get_option('lcm_enable_python'),
-        'Build Java bindings and utilities': get_option('lcm_enable_java'),
-        'Build Lua bindings and utilities': get_option('lcm_enable_lua'),
-        'Build unit tests': get_option('lcm_enable_tests'),
-        'Install autotools support M4 macros': get_option('lcm_install_m4macros'),
-        'Install pkg-config files': get_option('lcm_install_pkgconfig'),
-        'Build shared libraries': get_option('build_shared_libs'),
-        'Build lcmgen core modules': get_option('lcm_enable_lcmgen'),
-        }, section : 'Options')
+enabled_options = {'Build test and example programs': get_option('lcm_enable_examples'),
+                    'Build unit tests': get_option('lcm_enable_tests'),
+                    'Install autotools support M4 macros': get_option('lcm_install_m4macros'),
+                    'Install pkg-config files': get_option('lcm_install_pkgconfig'),
+                    'Build shared libraries': get_option('build_shared_libs'),
+                    'Build lcmgen core modules': get_option('lcm_enable_lcmgen')}
+
+summary_reference = {}
+
+foreach option, state: enabled_options 
+  if option == 'Build unit tests'
+    summary_reference += {option: false}
+    summary_reference += {'- Build unit tests errors(s)': 'Unit tests are currently unsupported!'}
+  else 
+    summary_reference += {option: not state.disabled()}
+  endif
+endforeach
+
+summary(summary_reference,
+        section : 'Options',
+        bool_yn : true)

meson_options.txt

@@ -2,7 +2,7 @@ option('lcm_enable_examples', type : 'feature', value : 'enabled', description :
 option('lcm_enable_python', type : 'feature', value : 'auto', description : 'Build Python bindings and utilities')
 option('lcm_enable_java', type : 'feature', value : 'auto', description : 'Build Java bindings and utilities')
 option('lcm_enable_lua', type : 'feature', value : 'auto', description : 'Build Lua bindings and utilities')
-option('lcm_enable_tests', type : 'feature', value : 'enabled', description : 'Build unit tests')
+option('lcm_enable_tests', type : 'feature', value : 'disabled', description : 'Build unit tests')
 option('lcm_install_m4macros', type : 'feature', value : 'enabled', description : 'Install autotools support M4 macros')
 option('lcm_install_pkgconfig', type : 'feature', value : 'enabled', description : 'Install pkg-config files')
 option('build_shared_libs', type : 'feature', value: 'enabled', description : 'Build shared libraries')