CMake: Link libSoundTouch dynamically if v2.1.1 is available

1 files changed, 86 insertions, 0 deletions

diff --git a/cmake/modules/FindSoundTouch.cmake b/cmake/modules/FindSoundTouch.cmake
new file mode 100644
index 0000000000..a9d92d5f43
--- /dev/null
+++ b/cmake/modules/FindSoundTouch.cmake
@@ -0,0 +1,86 @@
+# This file is part of Mixxx, Digital DJ'ing software.
+# Copyright (C) 2001-2020 Mixxx Development Team
+# Distributed under the GNU General Public Licence (GPL) version 2 or any later
+# later version. See the LICENSE file for details.
+
+#[=======================================================================[.rst:
+FindSoundTouch
+--------------
+
+Finds the SoundTouch library.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+This module provides the following imported targets, if found:
+
+``SoundTouch::SoundTouch``
+  The SoundTouch library
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This will define the following variables:
+
+``SoundTouch_FOUND``
+  True if the system has the SoundTouch library.
+``SoundTouch_INCLUDE_DIRS``
+  Include directories needed to use SoundTouch.
+``SoundTouch_LIBRARIES``
+  Libraries needed to link to SoundTouch.
+``SoundTouch_DEFINITIONS``
+  Compile definitions needed to use SoundTouch.
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``SoundTouch_INCLUDE_DIR``
+  The directory containing ``soundtouch/SoundTouch.h``.
+``SoundTouch_LIBRARY``
+  The path to the SoundTouch library.
+
+#]=======================================================================]
+
+find_package(PkgConfig QUIET)
+if(PkgConfig_FOUND)
+  pkg_check_modules(PC_SoundTouch QUIET SoundTouch>=2.1.1)
+endif()
+
+find_path(SoundTouch_INCLUDE_DIR
+  NAMES soundtouch/SoundTouch.h
+  PATHS ${PC_SoundTouch_INCLUDE_DIRS}
+  DOC "SoundTouch include directory")
+mark_as_advanced(SoundTouch_INCLUDE_DIR)
+
+find_library(SoundTouch_LIBRARY
+  NAMES SoundTouch
+  PATHS ${PC_SoundTouch_LIBRARY_DIRS}
+  DOC "SoundTouch library"
+)
+mark_as_advanced(SoundTouch_LIBRARY)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(
+  SoundTouch
+  DEFAULT_MSG
+  SoundTouch_LIBRARY
+  SoundTouch_INCLUDE_DIR
+)
+
+if(SoundTouch_FOUND)
+  set(SoundTouch_LIBRARIES "${SoundTouch_LIBRARY}")
+  set(SoundTouch_INCLUDE_DIRS "${SoundTouch_INCLUDE_DIR}")
+  set(SoundTouch_DEFINITIONS ${PC_SoundTouch_CFLAGS_OTHER})
+
+  if(NOT TARGET SoundTouch::SoundTouch)
+    add_library(SoundTouch::SoundTouch UNKNOWN IMPORTED)
+    set_target_properties(SoundTouch::SoundTouch
+      PROPERTIES
+        IMPORTED_LOCATION "${SoundTouch_LIBRARY}"
+        INTERFACE_COMPILE_OPTIONS "${PC_SoundTouch_CFLAGS_OTHER}"
+        INTERFACE_INCLUDE_DIRECTORIES "${SoundTouch_INCLUDE_DIR}"
+    )
+  endif()
+endif()