LibC+LibSanitizer+LibSystem: Remove static libc

Static libc on Serenity is broken in a more than one way and requires a
lot of patches to bring it to a usable and useful state. Therefore,
instead of keeping it around (and breaking even more) during the
upcoming libc build refactor, let's just delete it.

Userland/Libraries/LibC/CMakeLists.txt

@@ -118,7 +118,6 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option")
 
 # Note: We link all these against NoCoverage so that we don't break ports by requiring coverage symbols
 # in runtime/startup objects.
-# Since all native serenity applications use dynamic libraries, prevent coverage on libc.a as well
 
 add_library(crt0 STATIC crt0.cpp)
 add_dependencies(crt0 install_libc_headers)
@@ -167,35 +166,11 @@ endif()
 
 set_source_files_properties(ssp.cpp PROPERTIES COMPILE_FLAGS "-fno-stack-protector")
 
-add_library(LibCStaticWithoutDeps STATIC ${SOURCES})
-target_link_libraries(LibCStaticWithoutDeps PUBLIC ssp LibTimeZone PRIVATE NoCoverage)
-add_dependencies(LibCStaticWithoutDeps LibSystem LibUBSanitizer)
-
-add_custom_target(LibCStatic
-        COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibCStaticWithoutDeps>
-        COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibSystemStatic>
-        COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibUBSanitizerStatic>
-        COMMAND ${CMAKE_AR} -rcs ${CMAKE_CURRENT_BINARY_DIR}/libc.a *.o
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-        DEPENDS LibCStaticWithoutDeps LibSystemStatic LibUBSanitizerStatic
-        )
-
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libc.a DESTINATION ${CMAKE_INSTALL_PREFIX}/usr/lib/)
-file(GLOB TEMP_OBJ_FILES ${CMAKE_CURRENT_BINARY_DIR}/*.o)
-set_property(
-        TARGET LibCStatic
-        APPEND
-        PROPERTY ADDITIONAL_CLEAN_FILES ${TEMP_OBJ_FILES}
-)
-
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nolibc")
 serenity_libc(LibC c)
 add_dependencies(LibC crti crt0 crt0_shared crtn install_libc_headers)
 target_link_libraries(LibC PRIVATE LibSystem LibTimeZone)
 
-# We mark LibCStatic as a dependency of LibC because this triggers the build of the LibCStatic target
-add_dependencies(LibC LibCStatic)
-
 # Provide a linker script instead of various other libraries that tells everything to link against LibC.
 file(WRITE "${CMAKE_STAGING_PREFIX}/${CMAKE_INSTALL_LIBDIR}/libpthread.so" "INPUT(libc.so)")
 file(WRITE "${CMAKE_STAGING_PREFIX}/${CMAKE_INSTALL_LIBDIR}/libdl.so" "INPUT(libc.so)")

Userland/Libraries/LibSanitizer/CMakeLists.txt

@@ -10,7 +10,3 @@ set_source_files_properties(../LibC/ssp_nonshared.cpp PROPERTIES COMPILE_FLAGS "
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdlib")
 serenity_libc(LibUBSanitizer ubsan)
 add_dependencies(LibUBSanitizer install_libc_headers)
-
-add_library(LibUBSanitizerStatic STATIC ${SOURCES})
-add_dependencies(LibUBSanitizerStatic install_libc_headers)
-target_link_libraries(LibUBSanitizerStatic PRIVATE NoCoverage)

Userland/Libraries/LibSystem/CMakeLists.txt

@@ -6,8 +6,3 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdlib")
 serenity_libc(LibSystem system)
 add_dependencies(LibSystem install_libc_headers)
 target_include_directories(LibSystem PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
-
-add_library(LibSystemStatic STATIC ${SOURCES})
-add_dependencies(LibSystemStatic install_libc_headers)
-target_include_directories(LibSystemStatic PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
-target_link_libraries(LibSystemStatic PRIVATE NoCoverage)