Include FindALSA.cmake

Older versions of CMake don't seem to have it.

1 files changed, 73 insertions, 0 deletions

diff --git a/cmake/FindALSA.cmake b/cmake/FindALSA.cmake
new file mode 100644
index 00000000..519304d6
--- /dev/null
+++ b/cmake/FindALSA.cmake
@@ -0,0 +1,73 @@
+# - Find alsa
+# Find the alsa libraries (asound)
+#
+#  This module defines the following variables:
+#     ALSA_FOUND       - True if ALSA_INCLUDE_DIR & ALSA_LIBRARY are found
+#     ALSA_LIBRARIES   - Set when ALSA_LIBRARY is found
+#     ALSA_INCLUDE_DIRS - Set when ALSA_INCLUDE_DIR is found
+#
+#     ALSA_INCLUDE_DIR - where to find asoundlib.h, etc.
+#     ALSA_LIBRARY     - the asound library
+#     ALSA_VERSION_STRING - the version of alsa found (since CMake 2.8.8)
+#
+
+#=============================================================================
+# Copyright 2009-2011 Kitware, Inc.
+# Copyright 2009-2011 Philip Lowman <[email protected]>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#  * Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+#  * The names of Kitware, Inc., the Insight Consortium, or the names of
+#    any consortium members, or of any contributors, may not be used to
+#    endorse or promote products derived from this software without
+#    specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#=============================================================================
+
+find_path(ALSA_INCLUDE_DIR NAMES alsa/asoundlib.h
+          DOC "The ALSA (asound) include directory"
+)
+
+find_library(ALSA_LIBRARY NAMES asound
+             DOC "The ALSA (asound) library"
+)
+
+if(ALSA_INCLUDE_DIR AND EXISTS "${ALSA_INCLUDE_DIR}/alsa/version.h")
+  file(STRINGS "${ALSA_INCLUDE_DIR}/alsa/version.h" alsa_version_str REGEX "^#define[\t ]+SND_LIB_VERSION_STR[\t ]+\".*\"")
+
+  string(REGEX REPLACE "^.*SND_LIB_VERSION_STR[\t ]+\"([^\"]*)\".*$" "\\1" ALSA_VERSION_STRING "${alsa_version_str}")
+  unset(alsa_version_str)
+endif()
+
+# handle the QUIETLY and REQUIRED arguments and set ALSA_FOUND to TRUE if
+# all listed variables are TRUE
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(ALSA
+                                  REQUIRED_VARS ALSA_LIBRARY ALSA_INCLUDE_DIR
+                                  VERSION_VAR ALSA_VERSION_STRING)
+
+if(ALSA_FOUND)
+  set( ALSA_LIBRARIES ${ALSA_LIBRARY} )
+  set( ALSA_INCLUDE_DIRS ${ALSA_INCLUDE_DIR} )
+endif()
+
+mark_as_advanced(ALSA_INCLUDE_DIR ALSA_LIBRARY)