cmake_minimum_required(VERSION 3.16)
project(FxLibc VERSION 1.0.0 LANGUAGES C ASM)

# Options

# * -DFXLIBC_TARGET=<vhex-sh, vhex-x86, casiowin-fx, casiowin-cg, gint>
# * -DSHARED

option(SHARED "Build a shared library")
option(STANDARD_NAMESPACE "Use libc.a and put headers in global include folder")

set(TARGET_FOLDERS ${FXLIBC_TARGET})

if(FXLIBC_TARGET STREQUAL vhex-sh)
  list(APPEND TARGET_FOLDERS vhex-generic sh-generic)
  set(FXLIBC_ARCH sh)
  add_definitions(-D__SUPPORT_VHEX_KERNEL)
endif()

if(FXLIB_TARGET STREQUAL vhex-x86)
  list(APPEND TARGET_FOLDERS vhex-generic x86-generic)
  set(FXLIBC_ARCH x86)
  add_definitions(-D__SUPPORT_VHEX_KERNEL)
endif()

if(FXLIBC_TARGET STREQUAL casiowin-fx)
  list(APPEND TARGET_FOLDERS sh-generic)
  set(FXLIBC_ARCH sh)
  add_definitions(-D__SUPPORT_CASIOWIN_FX9860G)
endif()

if(FXLIBC_TARGET STREQUAL casiowin-cg)
  list(APPEND TARGET_FOLDERS sh-generic)
  set(FXLIBC_ARCH sh)
  add_definitions(-D__SUPPORT_CASIOWIN_FXCG50)
endif()

if(FXLIBC_TARGET STREQUAL gint)
  list(APPEND TARGET_FOLDERS sh-generic)
  set(FXLIBC_ARCH sh)
  add_definitions(-D__SUPPORT_GINT)
endif()

# TODO: Preprocessor definitions for configuration
# configure_file()

# libc.{a,so} libfxlibc.{a,so}

add_compile_options(-Wall -Wextra -std=c11 -ffreestanding -Os)
if(FXLIBC_ARCH STREQUAL sh)
  add_compile_options(
    "$<$<COMPILE_LANGUAGE:C>:-m3;-mb>"
    "$<$<COMPILE_LANGUAGE:ASM>:-m4-nofpu;-mb;-Wa,--dsp>")
endif()

# Building

set(SOURCES
  src/libc/stdio/vsnprintf.c
  src/libc/stdio/sprintf.c
  src/libc/stdio/dprintf.c
  src/libc/stdio/snprintf.c
  src/libc/stdio/puts.c
  src/libc/stdio/vsprintf.c
  src/libc/stdio/putc.c
  src/libc/stdio/internal/printf_actions.c
  src/libc/stdio/internal/printf_options.c
  src/libc/stdio/internal/printf_common.c
  src/libc/stdio/internal/printf.h
  src/libc/stdio/vdprintf.c
  src/libc/stdio/printf.c
  src/libc/stdlib/calloc.c
  src/libc/stdlib/reallocarray.c
  src/libc/string/strchr.c
  src/libc/string/strcpy.c
  src/libc/string/memcpy.c
  src/libc/string/strcat.c
  src/libc/string/memset.c
  src/libc/string/strcmp.c
  src/libc/string/strdup.c
  src/libc/string/strlen.c)

if(vhex-generic IN_LIST TARGET_FOLDERS)
  # TODO
endif()

if(vhex-sh IN_LIST TARGET_FOLDERS)
  list(APPEND SOURCES
    src/libc/signal/target/vhex-sh/kill.S
    src/libc/signal/target/vhex-sh/signal.S
    src/libc/stdlib/target/vhex-sh/free.S
    src/libc/stdlib/target/vhex-sh/malloc.S
    src/libc/stdlib/target/vhex-sh/realloc.S
    src/posix/fcntl/target/vhex-sh/open.S
    src/posix/sys/wait/target/vhex-sh/wait.S
    src/posix/sys/wait/target/vhex-sh/waitpid.S
    src/posix/unistd/target/vhex-sh/read.S
    src/posix/unistd/target/vhex-sh/getppid.S
    src/posix/unistd/target/vhex-sh/close.S
    src/posix/unistd/target/vhex-sh/fork_execve.S
    src/posix/unistd/target/vhex-sh/lseek.S
    src/posix/unistd/target/vhex-sh/getpid.S
    src/posix/unistd/target/vhex-sh/getpgid.S
    src/posix/unistd/target/vhex-sh/setpgid.S
    src/posix/unistd/target/vhex-sh/write.S)
endif()

if(sh-generic IN_LIST TARGET_FOLDERS)
  list(APPEND SOURCES
    src/libc/setjmp/target/sh-generic/setjmp.S
    src/libc/setjmp/target/sh-generic/longjmp.S)
endif()

if(casiowin-fx IN_LIST TARGET_FOLDERS)
  list(APPEND SOURCES
    src/posix/unistd/target/casiowin-fx/close.S)
endif()



# TODO: All targets

add_library(fxlibc ${SOURCES})
target_include_directories(fxlibc PRIVATE include/)
foreach(FOLDER IN LISTS TARGET_FOLDERS)
  target_include_directories(fxlibc PRIVATE include/target/${FOLDER}/)
endforeach()

set_target_properties(fxlibc PROPERTIES
  OUTPUT_NAME "c") # libc.a

# Install

install(TARGETS fxlibc DESTINATION lib/)
install(DIRECTORY include/ DESTINATION include/ PATTERN "target" EXCLUDE)

foreach(FOLDER IN LISTS TARGET_FOLDERS)
  if(EXISTS include/target/${FOLDER}/)
    install(DIRECTORY include/target/${FOLDER}/ DESTINATION include/)
  endif()
endforeach()