Fix to find PDA with cmake when building with alibuild.

Author: Barthelemy

RORC/cmake/FindPDA.cmake

@@ -4,13 +4,20 @@
 #  PDA_INCLUDE_DIRS - The PDA include directories
 #  PDA_LIBRARIES    - The libraries needed to use PDA
 #  PDA_DEFINITIONS  - Compiler switches required for using PDA
+#
+# This script can use the following variables:
+#  PDA_ROOT - Installation root to tell this module where to look. (it tries /usr and /usr/local otherwise)
 
 find_package(PkgConfig)
 
-#set(PDA_PREFIX "/usr/local" CACHE PATH "A path where to look for PDA in addition to default paths.")
+# find includes
+find_path(PDA_INCLUDE_DIR device_operator.h
+        HINTS ${PDA_ROOT}/include /usr/local/include /usr/include PATH_SUFFIXES "pda")
+# Remove the final "pda"
+get_filename_component(PDA_INCLUDE_DIR ${PDA_INCLUDE_DIR} DIRECTORY)
 
-find_path(PDA_INCLUDE_DIR pda/device_operator.h)
-find_library(PDA_LIBRARY NAMES pda)
+# find libraries
+find_library(PDA_LIBRARY NAMES pda HINTS /usr/local/lib /usr/lib ${PDA_ROOT}/lib)
 
 set(PDA_LIBRARIES ${PDA_LIBRARY})
 set(PDA_INCLUDE_DIRS ${PDA_INCLUDE_DIR})
@@ -20,7 +27,4 @@ include(FindPackageHandleStandardArgs)
 # if all listed variables are TRUE
 find_package_handle_standard_args(PDA DEFAULT_MSG PDA_LIBRARY PDA_INCLUDE_DIR)
 
-# Because case is a problem some times
-#set(PDA_FOUND ${PDA_FOUND}) # Not this time!
-
 mark_as_advanced(PDA_INCLUDE_DIR PDA_LIBRARY)