build: add option to generate a clang compilation database

The compilation database is a JSON file[1] storing all compilation flags. That
is useful for tools using libclang for code completion and error reporting
(for example: YouCompleteMe for vim).

[1]: http://clang.llvm.org/docs/JSONCompilationDatabase.html

1 files changed, 8 insertions, 0 deletions

diff --git a/wscript b/wscript
index cb12a3e37d..8f3961cf97 100644
--- a/wscript
+++ b/wscript
@@ -84,6 +84,11 @@ build_options = [
         'name': '--test',
         'desc': 'test suite (using cmocka)',
         'func': check_pkg_config('cmocka >= 0.4.1'),
+    }, {
+        'name': '--clang-database',
+        'desc': 'generate a clang compilation database',
+        'func': check_true,
+        'default': 'disable',
     }
 ]
 
@@ -891,6 +896,9 @@ def configure(ctx):
     if not ctx.dependency_satisfied('build-date'):
         ctx.env.CFLAGS += ['-DNO_BUILD_TIMESTAMPS']
 
+    if ctx.dependency_satisfied('clang-database'):
+        ctx.load('clang_compilation_database')
+
     ctx.store_dependencies_lists()
 
 def build(ctx):