Fix finding of alsa library when compiling with CMake.

CMakeLists.txt

@@ -324,7 +324,7 @@ add_definitions(-DHAVE_CONFIG_H)
 add_definitions(${ORTP_CPPFLAGS})
 
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/FindMS2.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/FindMS2.cmake)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/FindMS2.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/FindMS2.cmake @ONLY)
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/FindMS2.cmake
 	DESTINATION share/cmake/Modules
 	PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ

FindMS2.cmake.in

@@ -76,7 +76,7 @@ if(@ENABLE_VIDEO@)
 	endif()
 endif()
 
-set(_MS2ROOT_PATHS
+set(_MS2_ROOT_PATHS
 	${WITH_MS2}
 	${CMAKE_INSTALL_PREFIX}
 )

cmake/FindALSA.cmake

+############################################################################
+# FindALSA.txt
+# Copyright (C) 2014  Belledonne Communications, Grenoble France
+#
+############################################################################
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+############################################################################
+#
+# - Find the ALSA include file and library
+#
+#  ALSA_FOUND - system has ALSA
+#  ALSA_INCLUDE_DIRS - the ALSA include directory
+#  ALSA_LIBRARIES - The libraries needed to use ALSA
+
+include(CheckSymbolExists)
+
+set(_ALSA_ROOT_PATHS
+	${WITH_ALSA}
+	${CMAKE_INSTALL_PREFIX}
+)
+
+find_path(ALSA_INCLUDE_DIRS
+	NAMES alsa/asoundlib.h
+	HINTS _ALSA_ROOT_PATHS
+	PATH_SUFFIXES include
+)
+if(ALSA_INCLUDE_DIRS)
+	set(HAVE_ALSA_ASOUNDLIB_H 1)
+endif()
+
+find_library(ALSA_LIBRARIES
+	NAMES asound
+	HINTS _ALSA_ROOT_PATHS
+	PATH_SUFFIXES bin lib
+)
+
+if(ALSA_LIBRARIES)
+	cmake_push_check_state(RESET)
+	list(APPEND CMAKE_REQUIRED_INCLUDES ${ALSA_INCLUDE_DIRS})
+	list(APPEND CMAKE_REQUIRED_LIBRARIES ${ALSA_LIBRARIES})
+	check_symbol_exists(snd_pcm_open "alsa/asoundlib.h" HAVE_SND_PCM_OPEN)
+	cmake_pop_check_state()
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(ALSA
+	DEFAULT_MSG
+	ALSA_INCLUDE_DIRS ALSA_LIBRARIES HAVE_ALSA_ASOUNDLIB_H HAVE_SND_PCM_OPEN
+)
+
+mark_as_advanced(ALSA_INCLUDE_DIRS ALSA_LIBRARIES HAVE_ALSA_ASOUNDLIB_H HAVE_SND_PCM_OPEN)