Use working directory for executions.

Fixes issue 6318

CMakeLists.txt

@@ -85,19 +85,19 @@ endfunction(enable_precompiled_headers)
 include(FindGit OPTIONAL)
 if(GIT_FOUND AND NOT DOLPHIN_WC_REVISION)
 # defines DOLPHIN_WC_REVISION
-	EXECUTE_PROCESS(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
+	EXECUTE_PROCESS(WORKING_DIRECTORY ${PROJECT_SOURCE_DIR} COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
 	OUTPUT_VARIABLE DOLPHIN_WC_REVISION
 	OUTPUT_STRIP_TRAILING_WHITESPACE)
 # defines DOLPHIN_WC_DESCRIBE
-	EXECUTE_PROCESS(COMMAND ${GIT_EXECUTABLE} describe --always --long --dirty
+	EXECUTE_PROCESS(WORKING_DIRECTORY ${PROJECT_SOURCE_DIR} COMMAND ${GIT_EXECUTABLE} describe --always --long --dirty
 	OUTPUT_VARIABLE DOLPHIN_WC_DESCRIBE
 	OUTPUT_STRIP_TRAILING_WHITESPACE)
 
 # remove hash from description
 	STRING(REGEX REPLACE "-[^-]+((-dirty)?)$" "\\1" DOLPHIN_WC_DESCRIBE "${DOLPHIN_WC_DESCRIBE}")
 
 # defines DOLPHIN_WC_BRANCH
-	EXECUTE_PROCESS(COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
+	EXECUTE_PROCESS(WORKING_DIRECTORY ${PROJECT_SOURCE_DIR} COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
 	OUTPUT_VARIABLE DOLPHIN_WC_BRANCH
 	OUTPUT_STRIP_TRAILING_WHITESPACE)
 endif()
@@ -604,7 +604,7 @@ if(NOT DISABLE_WX AND NOT ANDROID)
 	FIND_PACKAGE(wxWidgets COMPONENTS core aui adv)
 
 	if(wxWidgets_FOUND)
-		EXECUTE_PROCESS(
+		EXECUTE_PROCESS(WORKING_DIRECTORY ${PROJECT_SOURCE_DIR} 
 			COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
 				${wxWidgets_CONFIG_OPTIONS} --version
 			OUTPUT_VARIABLE wxWidgets_VERSION
@@ -619,7 +619,7 @@ if(NOT DISABLE_WX AND NOT ANDROID)
 	endif(wxWidgets_FOUND)
 
 	if(wxWidgets_FOUND)
-		EXECUTE_PROCESS(
+		EXECUTE_PROCESS(WORKING_DIRECTORY ${PROJECT_SOURCE_DIR} 
 			COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
 				${wxWidgets_CONFIG_OPTIONS} --version
 			OUTPUT_VARIABLE wxWidgets_VERSION