meson: define PL_STATIC/PL_EXPORT when building library

Author: kasper93

meson.build

@@ -6,7 +6,7 @@ project('libplacebo', ['c', 'cpp'],
     'c_std=c11',
     'cpp_std=c++20',
   ],
-  meson_version: '>=0.63',
+  meson_version: '>=1.3.0',
   version: '@0@.@1@.@2@'.format(
     # Major version
     7,

src/meson.build

@@ -245,7 +245,8 @@ endif
 ### Main library build process
 inc = include_directories('./include')
 lib = library('placebo', sources,
-  c_args: ['-DPL_EXPORT'],
+  c_static_args: ['-DPL_STATIC'],
+  c_shared_args: ['-DPL_EXPORT'],
   install: true,
   dependencies: build_deps + glad_dep,
   soversion: apiver,