Make meson configuration more modular

1 files changed, 25 insertions, 0 deletions

diff --git a/meson/library/meson.build b/meson/library/meson.build
new file mode 100644
index 0000000..5533fb5
--- /dev/null
+++ b/meson/library/meson.build
@@ -0,0 +1,25 @@
+# Copyright 2020-2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+# General code to determine the library type to build.
+#
+# Unfortunately, meson's default_library option does not handle real-world
+# situations out of the box.  In particular, it is usually necessary to specify
+# different flags for static and shared builds of C libraries so that symbols
+# can be exported.  To work around this, we do not support default_library=both
+# on Windows.  On other platforms with GCC-like compilers, we can support both
+# because symbols can safely be exported in the same way (giving them default
+# visibility) in both static and shared builds.
+
+if get_option('default_library') == 'both'
+  if host_machine.system() == 'windows'
+    error('default_library=both is not supported on Windows')
+  endif
+
+  library_type = 'both_libraries'
+elif get_option('default_library') == 'shared'
+  library_type = 'shared_library'
+else
+  library_type = 'static_library'
+  add_project_arguments(['-DPUGL_STATIC'], language: ['c', 'cpp', 'objc'])
+endif