all wallet dependencies merged to single static lib

1 files changed, 118 insertions, 0 deletions

diff --git a/cmake/MergeStaticLibs.cmake b/cmake/MergeStaticLibs.cmake
new file mode 100644
index 000000000..346687a72
--- /dev/null
+++ b/cmake/MergeStaticLibs.cmake
@@ -0,0 +1,118 @@
+
+
+# Merge_static_libs(outlib lib1 lib2 ... libn) merges a number of static
+# libs into a single static library
+function(merge_static_libs outlib )
+	set(libs ${ARGV})
+	list(REMOVE_AT libs 0)
+# Create a dummy file that the target will depend on
+	set(dummyfile ${CMAKE_CURRENT_BINARY_DIR}/${outlib}_dummy.c)
+	file(WRITE ${dummyfile} "const char * dummy = \"${dummyfile}\";")
+	
+	add_library(${outlib} STATIC ${dummyfile})
+
+	if("${CMAKE_CFG_INTDIR}" STREQUAL ".")
+		set(multiconfig FALSE)
+	else()
+		set(multiconfig TRUE)
+	endif()
+	
+# First get the file names of the libraries to be merged	
+	foreach(lib ${libs})
+		get_target_property(libtype ${lib} TYPE)
+		if(NOT libtype STREQUAL "STATIC_LIBRARY")
+			message(FATAL_ERROR "Merge_static_libs can only process static libraries")
+		endif()
+		if(multiconfig)
+			foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
+				get_target_property("libfile_${CONFIG_TYPE}" ${lib} "LOCATION_${CONFIG_TYPE}")
+				list(APPEND libfiles_${CONFIG_TYPE} ${libfile_${CONFIG_TYPE}})
+			endforeach()
+		else()
+			get_target_property(libfile ${lib} LOCATION)
+			list(APPEND libfiles "${libfile}")
+		endif(multiconfig)
+	endforeach()
+	message(STATUS "will be merging ${libfiles}")
+# Just to be sure: cleanup from duplicates
+	if(multiconfig)	
+		foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
+			list(REMOVE_DUPLICATES libfiles_${CONFIG_TYPE})
+			set(libfiles ${libfiles} ${libfiles_${CONFIG_TYPE}})
+		endforeach()
+	endif()
+	list(REMOVE_DUPLICATES libfiles)
+
+# Now the easy part for MSVC and for MAC
+  if(MSVC)
+    # lib.exe does the merging of libraries just need to conver the list into string
+	foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
+		set(flags "")
+		foreach(lib ${libfiles_${CONFIG_TYPE}})
+			set(flags "${flags} ${lib}")
+		endforeach()
+		string(TOUPPER "STATIC_LIBRARY_FLAGS_${CONFIG_TYPE}" PROPNAME)
+		set_target_properties(${outlib} PROPERTIES ${PROPNAME} "${flags}")
+	endforeach()
+	
+  elseif(APPLE)
+    # Use OSX's libtool to merge archives
+	if(multiconfig)
+		message(FATAL_ERROR "Multiple configurations are not supported")
+	endif()
+	get_target_property(outfile ${outlib} LOCATION)  
+	add_custom_command(TARGET ${outlib} POST_BUILD
+		COMMAND rm ${outfile}
+		COMMAND /usr/bin/libtool -static -o ${outfile} 
+		${libfiles}
+	)
+  else() 
+  # general UNIX - need to "ar -x" and then "ar -ru"
+	if(multiconfig)
+		message(FATAL_ERROR "Multiple configurations are not supported")
+	endif()
+	get_target_property(outfile ${outlib} LOCATION)
+	message(STATUS "outfile location is ${outfile}")
+	foreach(lib ${libfiles})
+# objlistfile will contain the list of object files for the library
+		set(objlistfile ${lib}.objlist)
+		set(objdir ${lib}.objdir)
+		set(objlistcmake  ${objlistfile}.cmake)
+# we only need to extract files once 
+		if(${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/cmake.check_cache IS_NEWER_THAN ${objlistcmake})
+#---------------------------------			
+			FILE(WRITE ${objlistcmake}
+"# Extract object files from the library
+message(STATUS \"Extracting object files from ${lib}\")
+EXECUTE_PROCESS(COMMAND ${CMAKE_AR} -x ${lib}                
+                WORKING_DIRECTORY ${objdir})
+# save the list of object files
+EXECUTE_PROCESS(COMMAND ls . 
+				OUTPUT_FILE ${objlistfile}
+                WORKING_DIRECTORY ${objdir})")
+#---------------------------------					
+			file(MAKE_DIRECTORY ${objdir})
+			add_custom_command(
+				OUTPUT ${objlistfile}
+				COMMAND ${CMAKE_COMMAND} -P ${objlistcmake}
+				DEPENDS ${lib})
+		endif()
+		list(APPEND extrafiles "${objlistfile}")
+		# relative path is needed by ar under MSYS
+		file(RELATIVE_PATH objlistfilerpath ${objdir} ${objlistfile})
+		add_custom_command(TARGET ${outlib} POST_BUILD
+			COMMAND ${CMAKE_COMMAND} -E echo "Running: ${CMAKE_AR} ru ${outfile} @${objlistfilerpath}"
+			COMMAND ${CMAKE_AR} ru "${outfile}" @"${objlistfilerpath}"
+			WORKING_DIRECTORY ${objdir})		
+	endforeach()
+	add_custom_command(TARGET ${outlib} POST_BUILD
+			COMMAND ${CMAKE_COMMAND} -E echo "Running: ${CMAKE_RANLIB} ${outfile}"
+			COMMAND ${CMAKE_RANLIB} ${outfile})
+  endif()
+  file(WRITE ${dummyfile}.base "const char* ${outlib}_sublibs=\"${libs}\";")
+  add_custom_command( 
+		OUTPUT  ${dummyfile}
+		COMMAND ${CMAKE_COMMAND}  -E copy ${dummyfile}.base ${dummyfile}
+		DEPENDS ${libs} ${extrafiles})
+
+ endfunction()