blob: 549856362998229f6a84dc67e95949b3c49f8a24 [file] [log] [blame]
# CMake support related to building libffi.
include(CheckTypeSize)
include(CheckFunctionExists)
function(setup_libffi libffi_srcroot)
# FIXME: currently hard-coded
set(VERSION "3.99999")
set(STDC_HEADERS 1)
# FIXME: hoist this up into a common config-checking section (combine
# with similar check in libbacktrace cmake).
# For the moment, require that the target system supports mmap.
check_symbol_exists(mmap "sys/mman.h" HAVE_MMAP)
if(NOT HAVE_MMAP)
message(SEND_ERROR "Support for mmap() is required -- setup failed.")
else()
set(HAVE_MMAP_ANON 1)
set(HAVE_MMAP_FILE 1)
endif()
# Is this 32-bit or 64-bit x86?
if(SIZEOF_VOID_P STREQUAL 4)
set(HAVE_64BIT 0)
else()
set(HAVE_64BIT 1)
set(HAVE_AS_X86_64_UNWIND_SECTION_TYPE 1)
endif()
# Pick up correct sources based on arch.
set(c_srcs
"${libffi_srcroot}/src/closures.c"
"${libffi_srcroot}/src/prep_cif.c"
"${libffi_srcroot}/src/types.c"
"${libffi_srcroot}/src/raw_api.c"
"${libffi_srcroot}/src/java_raw_api.c"
"${libffi_srcroot}/src/x86/ffi.c")
set(asm_srcs
"${libffi_srcroot}/src/x86/sysv.S")
if(HAVE_64BIT)
list(APPEND c_srcs "${libffi_srcroot}/src/x86/ffi64.c" "${libffi_srcroot}/src/x86/ffiw64.c")
list(APPEND asm_srcs "${libffi_srcroot}/src/x86/unix64.S")
list(APPEND asm_srcs "${libffi_srcroot}/src/x86/win64.S")
endif()
set_source_files_properties(${asm_srcs} PROPERTIES LANGUAGE C)
# Set target based on arch.
if(HAVE_64BIT)
set(TARGET X86_64)
else()
set(TARGET X86)
endif()
# Misc x86 and llvm setup.
set(HAVE_AS_REGISTER_PSEUDO_OP 0)
set(HAVE_AS_CFI_PSEUDO_OP 1)
set(HAVE_AS_X86_PCREL 1)
set(HAVE_RO_EH_FRAME 1)
set(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE 1)
# These are options for FFI that we want to hard-wire on
set(FFI_CLOSURES 1)
set(FFI_GO_CLOSURES 1)
set(FFI_DEBUG off)
set(FFI_EXEC_TRAMPOLINE_TABLE 0)
set(FFI_MMAP_EXEC_WRIT 0)
# Copy correct version of ffitarget.h to libgo binary root.
file(COPY "${libffi_srcroot}/src/x86/ffitarget.h" DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
# At this point we can generate the necessary headers.
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/fficonfig.h.cmake" "${CMAKE_CURRENT_BINARY_DIR}/fficonfig.h")
configure_file ("${libffi_srcroot}/include/ffi.h.in" "${CMAKE_CURRENT_BINARY_DIR}/ffi.h")
# Create libffi object libraries
add_library(libffi_nonpiclib OBJECT EXCLUDE_FROM_ALL ${c_srcs} ${asm_srcs})
set_target_properties(libffi_nonpiclib PROPERTIES COMPILE_FLAGS "")
target_include_directories(libffi_nonpiclib PUBLIC "${libffi_srcroot}/include")
add_library(libffi_piclib OBJECT EXCLUDE_FROM_ALL ${c_srcs} ${asm_srcs})
set_target_properties(libffi_piclib PROPERTIES COMPILE_FLAGS "-fPIC")
target_include_directories(libffi_piclib PUBLIC "${libffi_srcroot}/include")
endfunction()