find_library: Add 'has_headers' kwarg

A library without its headers is often useless, so it is common to check
them together.

2 files changed, 24 insertions, 0 deletions

diff --git a/test cases/common/209 find_library and headers/foo.h b/test cases/common/209 find_library and headers/foo.h
new file mode 100644
index 000000000..014e06e82
--- /dev/null
+++ b/test cases/common/209 find_library and headers/foo.h
@@ -0,0 +1 @@
+#define VAL 42
diff --git a/test cases/common/209 find_library and headers/meson.build b/test cases/common/209 find_library and headers/meson.build
new file mode 100644
index 000000000..bcd71f12a
--- /dev/null
+++ b/test cases/common/209 find_library and headers/meson.build
@@ -0,0 +1,23 @@
+project('find library and headers', 'c')
+
+cc = meson.get_compiler('c')
+
+if not cc.find_library('z', required : false).found()
+  error('MESON_SKIP_TEST: zlib not found.')
+endif
+
+lib = cc.find_library('z',
+  has_headers : 'foo.h',
+  required : false)
+assert(not lib.found(), 'Header should be missing')
+
+lib = cc.find_library('z',
+  has_headers : 'foo.h',
+  header_include_directories : include_directories('.'))
+assert(lib.found(), 'Header should be found')
+
+lib = cc.find_library('z',
+  has_headers : ['foo.h', 'bar.h'],
+  header_include_directories : include_directories('.'),
+  required : false)
+assert(not lib.found(), 'One header should be missing')