Re-organize and comment the main cmake file, and test that all the targets are working properly (on ubuntu).
This commit is contained in:
Enrico Fraccaroli (Galfurian)
+51
-29
@@ -12,6 +12,9 @@ if(NOT CMAKE_BUILD_TYPE)
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endif()
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# =============================================================================
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# Options
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# =============================================================================
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# Add operating system specific option.
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message(STATUS "Crosscompiling : ${CMAKE_CROSSCOMPILING}")
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message(STATUS "System name : ${CMAKE_HOST_SYSTEM_NAME}")
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@@ -54,7 +57,6 @@ else()
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endif()
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endif()
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# =============================================================================
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# Add the debugging option.
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set(DEBUGGING_TYPE "DEBUG_STDIO" CACHE STRING "Chose the type of debugging: DEBUG_STDIO DEBUG_LOG")
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set_property(CACHE DEBUGGING_TYPE PROPERTY STRINGS DEBUG_STDIO DEBUG_LOG)
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@@ -64,7 +66,11 @@ else()
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message(FATAL_ERROR "Debugging type ${DEBUGGING_TYPE} is not valid.")
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endif()
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# =============================================================================
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# Compilation directories
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# =============================================================================
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# Add the sub-directories.
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add_subdirectory(programs)
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add_subdirectory(programs/tests)
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@@ -73,7 +79,11 @@ add_subdirectory(libc)
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add_subdirectory(doc/doxygen)
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# =============================================================================
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# Target to generate the EXT2 filesystem.
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# Filesystem construction
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# =============================================================================
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# MentOS is compatible with EXT2 fileystems. This target generates an EXT2
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# fileystem using the content of the `files` folder.
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add_custom_target(filesystem
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BYPRODUCTS ${CMAKE_BINARY_DIR}/rootfs.img
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COMMAND echo '============================================================================='
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@@ -89,33 +99,9 @@ add_custom_target(filesystem
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)
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# =============================================================================
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# First, we need to build the ISO for the cdrom.
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add_custom_target(
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cdrom.iso
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COMMAND cp ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin ${CMAKE_SOURCE_DIR}/iso/boot
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COMMAND grub-mkrescue -o cdrom.iso ${CMAKE_SOURCE_DIR}/iso
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DEPENDS kernel-bootloader.bin
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)
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# Emulator Generic Options
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# =============================================================================
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# Update GDB symbol file.
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add_custom_target(
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gdb_file
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BYPRODUCTS ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel.bin > ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/tests/test_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/prog_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break boot.c: boot_main" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break kernel.c: kmain" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "target remote localhost:1234" >> ${CMAKE_BINARY_DIR}/.gdbinit
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DEPENDS kernel-bootloader.bin
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DEPENDS all_programs
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DEPENDS all_tests
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DEPENDS libc
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)
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# =============================================================================
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# Set the emulator.
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set(EMULATOR qemu-system-i386)
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# Set the debug type.
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@@ -132,6 +118,9 @@ set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -m 1096M)
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -drive file=${CMAKE_BINARY_DIR}/rootfs.img,format=raw)
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# =============================================================================
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# Booting with QEMU for fun
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# =============================================================================
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# This first target runs the emualtor passing the kernel binary file.
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add_custom_target(
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qemu
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@@ -140,6 +129,27 @@ add_custom_target(
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)
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# =============================================================================
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# Booting with QEMU+GDB for debugging
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# =============================================================================
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# First, we need to generate a GDB file containing all the symbols of all our
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# executables.
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add_custom_target(
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.gdbinit
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BYPRODUCTS ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel.bin > ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/tests/test_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/prog_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break boot.c: boot_main" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break kernel.c: kmain" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "target remote localhost:1234" >> ${CMAKE_BINARY_DIR}/.gdbinit
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DEPENDS kernel-bootloader.bin
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DEPENDS all_programs
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DEPENDS all_tests
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DEPENDS libc
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)
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# This second target runs the emualtor passing the kernel binary file, and also
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# the `-s -S` options. This basically tells the emulator to run the kernel in
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# debug mode, and pause it up until a debugger connects to it.
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@@ -153,10 +163,22 @@ add_custom_target(
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COMMAND echo "\n\n"
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COMMAND ${EMULATOR} ${EMULATOR_FLAGS} -s -S -kernel ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin
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DEPENDS kernel-bootloader.bin
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DEPENDS gdb_file
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DEPENDS .gdbinit
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)
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# =============================================================================
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# Booting with QEMU+GRUB
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# =============================================================================
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# First, we need to build the ISO for the cdrom.
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add_custom_target(
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cdrom.iso
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COMMAND cp -rf ${CMAKE_SOURCE_DIR}/iso .
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COMMAND cp ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin ${CMAKE_BINARY_DIR}/iso/boot
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COMMAND grub-mkrescue -o ${CMAKE_BINARY_DIR}/cdrom.iso ${CMAKE_BINARY_DIR}/iso
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DEPENDS kernel-bootloader.bin
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)
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# This third target runs the emualtor, but this time, the kernel binary file is
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# inside the cdrom, so we will not pass the `-kernel` option. We will pass the
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# `-cdrom` option and the `-boot d` option, all the other options will remain
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@@ -165,4 +187,4 @@ add_custom_target(
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qemu-grub
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COMMAND ${EMULATOR} ${EMULATOR_FLAGS} -boot d -cdrom ${CMAKE_BINARY_DIR}/cdrom.iso
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DEPENDS cdrom.iso
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)
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)
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