build: Allow recipes to enable cmake support for meson

This was disabled as an optimisation on Windows but might be needed by
some recipes, so let's allow them to opt-in.

Part-of: <https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/682>

1 files changed, 10 insertions, 2 deletions

diff --git a/cerbero/build/build.py b/cerbero/build/build.py
index ec9ed017..9434026b 100644
--- a/cerbero/build/build.py
+++ b/cerbero/build/build.py
@@ -732,6 +732,8 @@ class Meson (Build, ModifyEnvBase) :
     # Build files require a build machine compiler when cross-compiling
     meson_needs_build_machine_compiler = False
     meson_builddir = "_builddir"
+    # We do not use cmake dependency files by default, speed up the build by disabling it
+    need_cmake = False
 
     def __init__(self):
         self.meson_options = self.meson_options or {}
@@ -757,6 +759,10 @@ class Meson (Build, ModifyEnvBase) :
         if not self.make_clean:
             self.make_clean = self.make + ['clean']
 
+        # Allow CMake dependencies to be found if requested
+        if self.need_cmake:
+            self.append_env('CMAKE_PREFIX_PATH', self.config.prefix, sep=os.pathsep)
+
     @staticmethod
     def _get_option_value(opt_type, value):
         if opt_type == 'feature':
@@ -894,8 +900,10 @@ class Meson (Build, ModifyEnvBase) :
             else:
                 props[key] += value
 
-        # We do not use cmake dependency files, speed up the build by disabling it
-        binaries = {'cmake': ['false']}
+        if self.need_cmake:
+            binaries = {}
+        else:
+            binaries = {'cmake': ['false']}
         # Get qmake and moc paths
         if self.config.qt5_qmake_path:
             binaries['qmake'] = [self.config.qt5_qmake_path]