include_directories(
	${CMAKE_CURRENT_SOURCE_DIR}
	${CMAKE_CURRENT_SOURCE_DIR}/../common
)

if (CMAKE_SYSTEM_NAME MATCHES "Linux")
	set(NEF ${CMAKE_SOURCE_DIR}/libelf/native-elf-format.h)
endif()

set(gensrcs
	${CMAKE_SOURCE_DIR}/libelf/libelf_fsize.c
	${CMAKE_SOURCE_DIR}/libelf/libelf_msize.c
	${CMAKE_SOURCE_DIR}/libelf/libelf_convert.c
	${NEF}
)

set(libsrcs
	elf.c
	elf_begin.c
	elf_cntl.c
	elf_end.c
	elf_errmsg.c
	elf_errno.c
	elf_data.c
	elf_fill.c
	elf_flag.c
	elf_getarhdr.c
	elf_getarsym.c
	elf_getbase.c
	elf_getident.c
	elf_hash.c
	elf_kind.c
	elf_memory.c
	elf_next.c
	elf_open.c
	elf_rand.c
	elf_rawfile.c
	elf_phnum.c
	elf_shnum.c
	elf_shstrndx.c
	elf_scn.c
	elf_strptr.c
	elf_update.c
	elf_version.c
	gelf_cap.c
	gelf_checksum.c
	gelf_dyn.c
	gelf_ehdr.c
	gelf_getclass.c
	gelf_fsize.c
	gelf_move.c
	gelf_phdr.c
	gelf_rel.c
	gelf_rela.c
	gelf_shdr.c
	gelf_sym.c
	gelf_syminfo.c
	gelf_symshndx.c
	gelf_xlate.c
	libelf_align.c
	libelf_allocate.c
	libelf_ar.c
	libelf_ar_util.c
	libelf_checksum.c
	libelf_data.c
	libelf_ehdr.c
	libelf_extended.c
	libelf_memory.c
	libelf_open.c
	libelf_phdr.c
	libelf_shdr.c
	libelf_xlate.c
	${gensrcs}
)


set(man3
	elf.3
	elf_begin.3
	elf_cntl.3
	elf_end.3
	elf_errmsg.3
	elf_fill.3
	elf_flagdata.3
	elf_getarhdr.3
	elf_getarsym.3
	elf_getbase.3
	elf_getdata.3
	elf_getident.3
	elf_getscn.3
	elf_getphdrnum.3
	elf_getphnum.3
	elf_getshdrnum.3
	elf_getshnum.3
	elf_getshdrstrndx.3
	elf_getshstrndx.3
	elf_hash.3
	elf_kind.3
	elf_memory.3
	elf_next.3
	elf_open.3
	elf_rawfile.3
	elf_rand.3
	elf_strptr.3
	elf_update.3
	elf_version.3
	gelf.3
	gelf_checksum.3
	gelf_fsize.3
	gelf_getcap.3
	gelf_getclass.3
	gelf_getdyn.3
	gelf_getehdr.3
	gelf_getmove.3
	gelf_getphdr.3
	gelf_getrel.3
	gelf_getrela.3
	gelf_getshdr.3
	gelf_getsym.3
	gelf_getsyminfo.3
	gelf_getsymshndx.3
	gelf_newehdr.3
	gelf_newphdr.3
	gelf_update_ehdr.3
	gelf_xlatetof.3
)

add_library(elfobj OBJECT ${libsrcs})
set_property(TARGET elfobj PROPERTY POSITION_INDEPENDENT_CODE 1)

add_library(elf SHARED $<TARGET_OBJECTS:elfobj>)
add_library(elf_pic STATIC $<TARGET_OBJECTS:elfobj>)
add_library(elf_static ${libsrcs})

set_target_properties(elf PROPERTIES VERSION 1.0)
set_target_properties(elf PROPERTIES SOVERSION 1)
set_target_properties(elf PROPERTIES PUBLIC_HEADER libelf.h)

macro(m4toc outfilename)
add_custom_command(
   OUTPUT ${CMAKE_SOURCE_DIR}/libelf/${outfilename}.c
   COMMAND m4 -DSRCDIR=${CMAKE_SOURCE_DIR}/libelf ${CMAKE_SOURCE_DIR}/libelf/${outfilename}.m4 > ${CMAKE_SOURCE_DIR}/libelf/${outfilename}.c
   DEPENDS ${CMAKE_SOURCE_DIR}/libelf/${outfilename}.m4
   COMMENT "Generated ${outfilename}.c"
)
set_source_files_properties(${CMAKE_SOURCE_DIR}/lib/${outfilename}.c PROPERTIES GENERATED true)
endmacro(m4toc)

macro(install_symlink filepath sympath)
    install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${filepath} ${sympath})")
    install(CODE "message(\"-- Created symlink: ${sympath} -> ${filepath}\")")
endmacro(install_symlink)

add_custom_command(
    OUTPUT ${CMAKE_SOURCE_DIR}/libelf/native-elf-format.h
    COMMAND ${CMAKE_SOURCE_DIR}/common/native-elf-format > ${CMAKE_SOURCE_DIR}/libelf/native-elf-format.h
    DEPENDS ${CMAKE_SOURCE_DIR}/common/native-elf-format
    COMMENT "Generated native-elf-format.h"
)
set_source_files_properties(${CMAKE_SOURCE_DIR}/lib/native-elf-format.h PROPERTIES GENERATED true)

m4toc(libelf_fsize)
m4toc(libelf_msize)
m4toc(libelf_convert)

install(TARGETS elf
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

install(TARGETS elf_pic
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libelf_static.a
	RENAME libelf.a
	DESTINATION lib)

install(FILES gelf.h ../common/elfdefinitions.h DESTINATION include)
install(FILES ${man3} DESTINATION share/man/man3)

# man page links
set(m3dir ${RAVDEST}${CMAKE_INSTALL_MANDIR}/man3)
install_symlink(gelf_checksum.3 ${m3dir}/elf32_checksum.3)
install_symlink(gelf_checksum.3 ${m3dir}/elf64_checksum.3)
install_symlink(gelf_fsize.3    ${m3dir}/elf32_fsize.3)
install_symlink(gelf_fsize.3    ${m3dir}/elf64_fsize.3)
install_symlink(gelf_getehdr.3  ${m3dir}/elf32_getehdr.3)
install_symlink(gelf_getehdr.3  ${m3dir}/elf64_getehdr.3)
install_symlink(gelf_getphdr.3  ${m3dir}/elf32_getphdr.3)
install_symlink(gelf_getphdr.3  ${m3dir}/elf64_getphdr.3)
install_symlink(gelf_getshdr.3  ${m3dir}/elf32_getshdr.3)
install_symlink(gelf_getshdr.3  ${m3dir}/elf64_getshdr.3)
install_symlink(gelf_newehdr.3  ${m3dir}/elf32_newehdr.3)
install_symlink(gelf_newehdr.3  ${m3dir}/elf64_newehdr.3)
install_symlink(gelf_newphdr.3  ${m3dir}/elf32_newphdr.3)
install_symlink(gelf_newphdr.3  ${m3dir}/elf64_newphdr.3)
install_symlink(gelf_xlatetof.3 ${m3dir}/elf32_xlatetof.3)
install_symlink(gelf_xlatetof.3 ${m3dir}/elf64_xlatetof.3)
install_symlink(gelf_xlatetof.3 ${m3dir}/elf32_xlatetom.3)
install_symlink(gelf_xlatetof.3 ${m3dir}/elf64_xlatetom.3)
install_symlink(elf_errmsg.3 ${m3dir}/elf_errno.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagarhdr.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagehdr.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagelf.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagphdr.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagscn.3)
install_symlink(elf_flagdata.3 ${m3dir}/elf_flagshdr.3)
install_symlink(elf_getdata.3 ${m3dir}/elf_newdata.3)
install_symlink(elf_getdata.3 ${m3dir}/elf_rawdata.3)
install_symlink(elf_getscn.3 ${m3dir}/elf_ndxscn.3)
install_symlink(elf_getscn.3 ${m3dir}/elf_newscn.3)
install_symlink(elf_getscn.3 ${m3dir}/elf_nextscn.3)
install_symlink(elf_getshstrndx.3 ${m3dir}/elf_setshstrndx.3)
install_symlink(elf_open.3 ${m3dir}/elf_openmemory.3)
install_symlink(gelf_getcap.3 ${m3dir}/gelf_update_cap.3)
install_symlink(gelf_getdyn.3 ${m3dir}/gelf_update_dyn.3)
install_symlink(gelf_getmove.3 ${m3dir}/gelf_update_move.3)
install_symlink(gelf_getrel.3 ${m3dir}/gelf_update_rel.3)
install_symlink(gelf_getrela.3 ${m3dir}/gelf_update_rela.3)
install_symlink(gelf_getsym.3 ${m3dir}/gelf_update_sym.3)
install_symlink(gelf_getsyminfo.3 ${m3dir}/gelf_update_syminfo.3)
install_symlink(gelf_getsymshndx.3 ${m3dir}/gelf_update_symshndx.3)
install_symlink(gelf_update_ehdr.3 ${m3dir}/gelf_update_phdr.3)
install_symlink(gelf_update_ehdr.3 ${m3dir}/gelf_update_shdr.3)
install_symlink(gelf_xlatetof.3 ${m3dir}/gelf_xlatetom.3)