Introduce cmake-based rewrite of KBuild

Introducing CMake is an important step in a larger effort to make
Zephyr easy to use for application developers working on different
platforms with different development environment needs.

Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.

This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.

For users that just want to continue their work with minimal
disruption the following should suffice:

Install CMake 3.8.2+

Port any out-of-tree Makefiles to CMake.

Learn the absolute minimum about the new command line interface:

$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..

$ cd build
$ make

PR: #4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html

Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>

arch/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(common)
+add_subdirectory(${ARCH})

arch/arc/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Enable debug support in mdb
+# Dwarf version 2 can be recognized by mdb
+# The default dwarf version in gdb is not recognized by mdb
+zephyr_cc_option(-g3 -gdwarf-2)
+
+# Without this (poorly named) option, compiler may generate undefined
+# references to abort().
+# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63691
+zephyr_cc_option(-fno-delete-null-pointer-checks)
+
+zephyr_cc_option_ifdef (CONFIG_LTO         -flto)
+
+add_subdirectory(soc/${SOC_PATH})
+add_subdirectory(core)

arch/arc/core/CMakeLists.txt

@@ -0,0 +1,23 @@
+zephyr_sources(
+	thread.c
+	thread_entry_wrapper.S
+	cpu_idle.S
+	fast_irq.S
+	fatal.c
+	fault.c
+	fault_s.S
+	irq_manage.c
+	cache.c
+	timestamp.c
+	isr_wrapper.S
+	regular_irq.S
+	swap.S
+	sys_fatal_error_handler.c
+	prep_c.c
+	reset.S
+	vector_table.c
+	)
+
+zephyr_sources_if_kconfig(irq_offload.c)
+zephyr_sources_ifdef(CONFIG_ATOMIC_OPERATIONS_CUSTOM atomic.c)
+add_subdirectory_ifdef(CONFIG_CPU_HAS_MPU mpu)

arch/arc/core/mpu/CMakeLists.txt

@@ -0,0 +1,2 @@
+zephyr_sources_if_kconfig(arc_core_mpu.c)
+zephyr_sources_if_kconfig(arc_mpu.c)

arch/arc/soc/em11d/CMakeLists.txt

@@ -0,0 +1,14 @@
+zephyr_library_include_directories(${PROJECT_SOURCE_DIR}/drivers)
+
+zephyr_cc_option(-mcpu=em4_fpuda -mno-sdata -mdiv-rem -mswap -mnorm)
+zephyr_cc_option(-mmpy-option=6 -mbarrel-shifter)
+zephyr_cc_option(--param l1-cache-size=16384)
+zephyr_cc_option(--param l1-cache-line-size=32)
+zephyr_cc_option_ifdef(CONFIG_CODE_DENSITY -mcode-density)
+zephyr_cc_option_ifdef(CONFIG_FLOAT -mfpu=fpuda_all)
+
+
+zephyr_sources(
+  soc.c
+  soc_config.c
+  )

arch/arc/soc/em7d/CMakeLists.txt

@@ -0,0 +1,21 @@
+zephyr_library_include_directories(${PROJECT_SOURCE_DIR}/drivers)
+
+zephyr_cc_option(-mcpu=-mcpu=em4_dmips -mno-sdata)
+zephyr_cc_option(-mdiv-rem -mswap -mnorm)
+zephyr_cc_option(-mmpy-option=6 -mbarrel-shifter)
+zephyr_cc_option(--param l1-cache-size=16384)
+zephyr_cc_option(--param l1-cache-line-size=32)
+
+zephyr_cc_option_ifdef(CONFIG_CODE_DENSITY -mcode-density)
+
+if(CONFIG_BOARD_EM_STARTERKIT_R23)
+  message(FATAL "em7d from em starterkit 2.3 is not supported")
+endif()
+
+
+zephyr_sources(
+  soc.c
+  soc_config.c
+  )
+
+zephyr_source_ifdef(CONFIG_ARC_MPU_ENABLE arc_mpu_regions.c)

arch/arc/soc/em9d/CMakeLists.txt

@@ -0,0 +1,14 @@
+zephyr_library_include_directories(${PROJECT_SOURCE_DIR}/drivers)
+
+zephyr_cc_option(-mcpu=em4_fpus -mno-sdata -mdiv-rem -mswap -mnorm)
+zephyr_cc_option(-mdiv-rem -mswap -mnorm)
+zephyr_cc_option(-mmpy-option=6 -mbarrel-shifter)
+
+zephyr_cc_option_ifdef(CONFIG_CODE_DENSITY -mcode-density)
+zephyr_cc_option_ifdef(CONFIG_FLOAT -mfpu=fpuda_all)
+
+
+zephyr_sources(
+  soc.c
+  soc_config.c
+  )

arch/arc/soc/quark_se_c1000_ss/CMakeLists.txt

@@ -0,0 +1,17 @@
+zephyr_library_include_directories(${PROJECT_SOURCE_DIR}/drivers)
+zephyr_include_directories(${PROJECT_SOURCE_DIR}/arch/x86/soc/intel_quark)
+
+zephyr_cc_option(-mcpu=quarkse_em -mno-sdata)
+
+zephyr_compile_definitions_ifdef(
+  CONFIG_SOC_QUARK_SE_C1000_SS
+  QM_SENSOR=1
+  SOC_SERIES=quark_se
+  )
+
+zephyr_sources(
+  soc.c
+  soc_config.c
+  power.c
+  soc_power.S
+  )

arch/arm/CMakeLists.txt

@@ -0,0 +1,21 @@
+zephyr_cc_option_ifdef(CONFIG_LTO -flto)
+
+set(ARCH_FOR_cortex-m0     armv6-m     )
+set(ARCH_FOR_cortex-m0plus armv6-m     )
+set(ARCH_FOR_cortex-m3     armv7-m     )
+set(ARCH_FOR_cortex-m4     armv7e-m    )
+set(ARCH_FOR_cortex-m23    armv8-m.base)
+set(ARCH_FOR_cortex-m33    armv8-m.main)
+
+if(${ARCH_FOR_${GCC_M_CPU}})
+    set(ARCH_FLAG -march=${ARCH_FOR_${GCC_M_CPU}})
+endif()
+
+zephyr_compile_options(
+  -mabi=aapcs
+  ${TOOLCHAIN_C_FLAGS}
+  ${ARCH_FLAG}
+  )
+
+add_subdirectory(soc)
+add_subdirectory(core)

arch/arm/core/CMakeLists.txt

@@ -0,0 +1,20 @@
+zephyr_sources(
+  exc_exit.S
+  irq_init.c
+  swap.S
+  fault.c
+  irq_manage.c
+  thread.c
+  cpu_idle.S
+  fault_s.S
+  fatal.c
+  sys_fatal_error_handler.c
+  thread_abort.c
+)
+
+zephyr_sources_ifdef(CONFIG_GEN_SW_ISR_TABLE isr_wrapper.S)
+zephyr_sources_ifdef(CONFIG_CPLUSPLUS __aeabi_atexit.c)
+zephyr_sources_ifdef(CONFIG_IRQ_OFFLOAD irq_offload.c)
+
+add_subdirectory_ifdef(CONFIG_CPU_CORTEX_M cortex_m)
+add_subdirectory_ifdef(CONFIG_CPU_HAS_MPU  cortex_m/mpu)

arch/arm/core/cortex_m/CMakeLists.txt

@@ -0,0 +1,9 @@
+zephyr_sources(
+  vector_table.S
+  reset.S
+  nmi_on_reset.S
+  prep_c.c
+  scb.c
+  nmi.c
+  exc_manage.c
+  )

arch/arm/core/cortex_m/mpu/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_sources_ifdef(CONFIG_ARM_CORE_MPU arm_core_mpu.c)
+zephyr_sources_if_kconfig(               arm_mpu.c)
+zephyr_sources_if_kconfig(               nxp_mpu.c)

arch/arm/soc/CMakeLists.txt

@@ -0,0 +1,6 @@
+if(SOC_FAMILY)
+  add_subdirectory(${SOC_FAMILY})
+else()
+  add_subdirectory(${SOC_NAME})
+endif()
+

arch/arm/soc/arm/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(${SOC_SERIES})

arch/arm/soc/arm/beetle/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_sources(
+  soc.c
+  power.c
+  )
+zephyr_sources_ifdef(CONFIG_ARM_MPU_ENABLE arm_mpu_regions.c)

arch/arm/soc/arm/mps2/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_sources(
+  soc.c
+  )

arch/arm/soc/atmel_sam/CMakeLists.txt

@@ -0,0 +1,8 @@
+# Makefile - Atmel SAM MCU family
+#
+# Copyright (c) 2016 Piotr Mienkowski
+# SPDX-License-Identifier: Apache-2.0
+#
+
+add_subdirectory(${SOC_SERIES})
+add_subdirectory_ifdef(CONFIG_ASF common)

arch/arm/soc/atmel_sam/common/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories(.)
+zephyr_sources(
+  soc_pmc.c
+  soc_gpio.c
+  )

arch/arm/soc/atmel_sam/sam3x/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_sources(
+  soc.c
+  )

arch/arm/soc/atmel_sam/sam4s/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_sources(
+  soc.c
+  )

arch/arm/soc/atmel_sam/same70/CMakeLists.txt

@@ -0,0 +1,4 @@
+zephyr_sources(
+  soc.c
+  soc_config.c
+  )

arch/arm/soc/nordic_nrf5/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories(
+  include
+)
+
+add_subdirectory(${SOC_SERIES})

arch/arm/soc/nordic_nrf5/nrf51/CMakeLists.txt

@@ -0,0 +1,9 @@
+zephyr_compile_definitions_ifdef(
+  CONFIG_SOC_SERIES_NRF51X
+  NRF51
+  NRF51822
+  )
+
+zephyr_sources(
+  soc.c
+  )

arch/arm/soc/nordic_nrf5/nrf52/CMakeLists.txt

@@ -0,0 +1,8 @@
+zephyr_compile_definitions_ifdef(CONFIG_SOC_NRF52832 NRF52832_XXAA)
+zephyr_compile_definitions_ifdef(CONFIG_SOC_NRF52840 NRF52840_XXAA)
+
+zephyr_sources(
+  mpu_regions.c
+  power.c
+  soc.c
+  )

arch/arm/soc/nxp_kinetis/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(${SOC_SERIES})

arch/arm/soc/nxp_kinetis/k6x/CMakeLists.txt

@@ -0,0 +1,8 @@
+zephyr_sources(
+  soc.c
+  wdog.S
+  )
+zephyr_sources_ifdef(
+  CONFIG_HAS_SYSMPU
+  nxp_mpu_regions.c
+  )

arch/arm/soc/nxp_kinetis/kl2x/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources(soc.c)

arch/arm/soc/nxp_kinetis/kwx/CMakeLists.txt

@@ -0,0 +1,4 @@
+zephyr_sources_ifdef(CONFIG_SOC_MKW24D5 wdog.S soc_kw2xd.c)
+zephyr_sources_ifdef(CONFIG_SOC_MKW22D5 wdog.S soc_kw2xd.c)
+zephyr_sources_ifdef(CONFIG_SOC_MKW41Z4        soc_kw4xz.c)
+zephyr_sources_ifdef(CONFIG_SOC_MKW40Z4        soc_kw4xz.c)

arch/arm/soc/silabs_exx32/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(${SOC_SERIES})
+add_subdirectory(common)

arch/arm/soc/silabs_exx32/common/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources(soc_gpio.c)

arch/arm/soc/silabs_exx32/efm32wg/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources(soc.c)

arch/arm/soc/st_stm32/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(${SOC_SERIES})
+add_subdirectory(common)

arch/arm/soc/st_stm32/common/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources_ifdef(CONFIG_STM32_ARM_MPU_ENABLE arm_mpu_regions.c)

arch/arm/soc/st_stm32/stm32f0/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_include_directories($ENV{ZEPHYR_BASE}/drivers)
+zephyr_sources(soc.c)
+zephyr_sources_ifdef(CONFIG_GPIO soc_gpio.c)

arch/arm/soc/st_stm32/stm32f1/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories($ENV{ZEPHYR_BASE}/drivers)
+zephyr_sources(
+  soc.c
+  )
+zephyr_sources_ifdef(CONFIG_GPIO soc_gpio.c)

arch/arm/soc/st_stm32/stm32f3/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories($ENV{ZEPHYR_BASE}/drivers)
+zephyr_sources(
+  soc.c
+  )
+zephyr_sources_ifdef(CONFIG_GPIO soc_gpio.c)

arch/arm/soc/st_stm32/stm32f4/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories($ENV{ZEPHYR_BASE}/drivers)
+zephyr_sources(
+  soc.c
+  )
+zephyr_sources_ifdef(CONFIG_GPIO soc_gpio.c)

arch/arm/soc/st_stm32/stm32l4/CMakeLists.txt

@@ -0,0 +1,5 @@
+zephyr_include_directories($ENV{ZEPHYR_BASE}/drivers)
+zephyr_sources(
+  soc.c
+  )
+zephyr_sources_ifdef(CONFIG_GPIO soc_gpio.c)

arch/arm/soc/ti_lm3s6965/CMakeLists.txt

@@ -0,0 +1,4 @@
+zephyr_sources(
+  soc.c
+  soc_config.c
+  )

arch/arm/soc/ti_simplelink/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(${SOC_SERIES})

arch/arm/soc/ti_simplelink/cc2650/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources(soc.c)

arch/arm/soc/ti_simplelink/cc32xx/CMakeLists.txt

@@ -0,0 +1 @@
+zephyr_sources(soc.c)

arch/arm/soc/ti_simplelink/msp432p4xx/CMakeLists.txt

@@ -0,0 +1,2 @@
+zephyr_compile_definitions(-D__MSP432P401R__)
+zephyr_sources(soc.c)

arch/common/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Put functions and data in their own binary sections so that ld can
+# garbage collect them
+zephyr_cc_option(-ffunction-sections -fdata-sections)
+
+zephyr_sources_ifdef(
+  CONFIG_GEN_ISR_TABLES
+  isr_tables.c
+  )
+
+zephyr_sources_ifdef(
+  CONFIG_EXECUTION_BENCHMARKING
+  timing_info_bench.c
+  )

arch/nios2/CMakeLists.txt

@@ -0,0 +1,37 @@
+if(CONFIG_GP_NONE)
+set(gpopt none)
+elseif(CONFIG_GP_LOCAL)
+set(gpopt local)
+elseif(CONFIG_GP_GLOBAL)
+set(gpopt global)
+elseif(CONFIG_GP_ALL_DATA)
+set(gpopt data)
+endif()
+
+# Set Global Pointer option based on Kconfig.
+zephyr_cc_option(-mgpopt=${gpopt})
+
+# TODO Find a way to pull this out of system.h somehow
+# instead of having Kconfig for it
+
+if(CONFIG_HAS_MUL_INSTRUCTION)
+zephyr_cc_option(-mhw-mul)
+else()
+zephyr_cc_option(-mno-hw-mul)
+endif()
+
+if(CONFIG_HAS_MULX_INSTRUCTION)
+zephyr_cc_option(-mhw-mulx)
+else()
+zephyr_cc_option(-mno-hw-mulx)
+endif()
+
+if(CONFIG_HAS_DIV_INSTRUCTION)
+zephyr_cc_option(-mhw-div)
+else()
+zephyr_cc_option(-mno-hw-div)
+endif()
+
+
+add_subdirectory(soc/${SOC_PATH})
+add_subdirectory(core)

arch/nios2/core/CMakeLists.txt

@@ -0,0 +1,14 @@
+zephyr_sources(
+	thread.c
+	cpu_idle.c
+	fatal.c
+	irq_manage.c
+	swap.S
+	prep_c.c
+	reset.S
+	cache.c
+	exception.S
+	crt0.S
+	)
+
+zephyr_sources_if_kconfig(irq_offload.c)

arch/nios2/soc/nios2f-zephyr/CMakeLists.txt

@@ -0,0 +1,2 @@
+
+set($ENV{NIOS2_CPU_SOF} $ENV{ZEPHYR_BASE}/arch/nios2/soc/nios2f-zephyr/cpu/ghrd_10m50da.sof)

arch/riscv32/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_subdirectory(soc)
+add_subdirectory(core)
+
+set_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-littleriscv)