add basic rtems support as a new playground

mk/build.mk

@@ -179,11 +179,14 @@ else
 ifeq ($(ADK_TARGET_OS_BAREMETAL),y)
 	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final
 endif
+ifeq ($(ADK_TARGET_OS_RTEMS),y)
+	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/compile target/install target/targethelp
+endif
 ifeq ($(ADK_TARGET_OS_FROSTED),y)
 	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/config-prepare target/compile target/install target/targethelp
 endif
 ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
-	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/config-prepare target/compile target/install target/targethelp
+	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/compile target/install target/targethelp
 endif
 ifeq ($(ADK_TARGET_OS_LINUX),y)
 	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/config-prepare target/compile package_clean package/compile root_clean package/install target/install package_index

mk/vars.mk

@@ -82,13 +82,19 @@ else
 GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-abiv2-$(ADK_TARGET_LINUXTYPE)
 endif
 endif
-ifeq ($(ADK_TARGET_LIB_NEWLIB),y)
-ifeq ($(ADK_TARGET_OS_FROSTED),y)
-GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-frosted-$(ADK_TARGET_SUFFIX)
-else
+ifeq ($(ADK_TARGET_OS_BAREMETAL),y)
 GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_SUFFIX)
 endif
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_OS)-$(ADK_TARGET_SUFFIX)
+endif
+ifeq ($(ADK_TARGET_OS_RTEMS),y)
+GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_OS)
+endif
+ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
+GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_OS)
 endif
+
 TARGET_CROSS:=		$(TOOLCHAIN_DIR)/usr/bin/$(GNU_TARGET_NAME)-
 TARGET_COMPILER_PREFIX?=${TARGET_CROSS}
 CONFIGURE_TRIPLE:=	--build=${GNU_HOST_NAME} \

scripts/create-menu

@@ -98,7 +98,7 @@ config ADK_TARGET_CHOOSE_ARCH
 	bool "choose architecture"
 
 EOD
-for os in linux frosted zephyr baremetal; do
+for os in linux frosted rtems zephyr baremetal; do
   for arch in $(cat $topdir/target/$os/arch.lst);do
     OS=$(echo $os | tr '[:lower:]' '[:upper:]')
     ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')

target/Makefile

@@ -140,11 +140,6 @@ config-prepare: $(ADK_TOPDIR)/.config
 	    >$(BUILD_DIR)/.frostedapps
 endif
 
-ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
-config-prepare: $(ADK_TOPDIR)/.config
-	echo foo
-endif
-
 ifeq ($(ADK_TARGET_OS_FROSTED),y)
 prepare: frosted-prepare
 compile: frosted-compile
@@ -152,6 +147,13 @@ install: frosted-install
 targethelp: frosted-targethelp
 endif
 
+ifeq ($(ADK_TARGET_OS_RTEMS),y)
+prepare: rtems-prepare
+compile: rtems-compile
+install: rtems-install
+targethelp: rtems-targethelp
+endif
+
 ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
 prepare: zephyr-prepare
 compile: zephyr-compile

target/config/Config.in.libc

@@ -130,6 +130,7 @@ config ADK_TARGET_LIB_NEWLIB
 		ADK_TARGET_ARCH_XTENSA) && \
 		(ADK_TARGET_OS_BAREMETAL || \
 		 ADK_TARGET_OS_FROSTED || \
+		 ADK_TARGET_OS_RTEMS || \
 		 ADK_TARGET_OS_ZEPHYR )
 	help
 	  https://sourceware.org/newlib/
@@ -176,7 +177,8 @@ config ADK_TARGET_LIB_NEWLIB_2_5_0
 	depends on ADK_TARGET_LIB_NEWLIB \
 		&& !ADK_TARGET_ARCH_RISCV \
 		&& !ADK_TARGET_ARCH_XTENSA \
-		&& !ADK_TARGET_OS_FROSTED
+		&& !ADK_TARGET_OS_FROSTED \
+		&& !ADK_TARGET_OS_RTEMS
 
 config ADK_TARGET_LIB_NEWLIB_RISCV
 	bool "2.4.0-riscv"
@@ -198,18 +200,18 @@ endchoice
 
 choice
 prompt "Threading"
+depends on ADK_TARGET_LIB_UCLIBC_NG
 
 config ADK_TARGET_WITH_NPTL
 	bool "enable NPTL"
-	depends on ADK_TARGET_SUPPORTS_NPTL && ADK_TARGET_SUPPORTS_THREADS && !ADK_TARGET_LIB_NEWLIB
+	depends on ADK_TARGET_SUPPORTS_NPTL && ADK_TARGET_SUPPORTS_THREADS
 
 config ADK_TARGET_WITH_LT
 	bool "enable Linuxthreads"
-	depends on ADK_TARGET_SUPPORTS_LT && ADK_TARGET_SUPPORTS_THREADS && ADK_TARGET_LIB_UCLIBC_NG
+	depends on ADK_TARGET_SUPPORTS_LT && ADK_TARGET_SUPPORTS_THREADS
 
 config ADK_TARGET_WITHOUT_THREADS
 	bool "disable threads"
-	depends on ADK_TARGET_LIB_UCLIBC_NG || ADK_TARGET_LIB_NEWLIB
 
 endchoice
 
@@ -278,4 +280,4 @@ config ADK_TARGET_SUFFIX
 	default "muslfdpic" if ADK_TARGET_LIB_MUSL && ADK_TARGET_BINFMT_FDPIC
 	default "musl" if ADK_TARGET_LIB_MUSL
 	default "eabi" if ADK_TARGET_LIB_NEWLIB && ADK_TARGET_ARCH_ARM
-	default "elf" if ADK_TARGET_LIB_NEWLIB
+	default "elf" if ADK_TARGET_LIB_NEWLIB && ADK_TARGET_OS_BAREMETAL

target/config/Config.in.os

@@ -9,6 +9,16 @@ config ADK_TARGET_OS_LINUX
 	help
 	  Create a Linux system or toolchain.
 
+config ADK_TARGET_OS_BAREMETAL
+	bool "Bare metal"
+	help
+	  Create a bare metal appliance or toolchain.
+
+config ADK_TARGET_OS_RTEMS
+	bool "RTEMS"
+	help
+	  Create a RTEMS appliance or toolchain.
+
 config ADK_TARGET_OS_FROSTED
 	bool "Frosted"
 	help
@@ -19,9 +29,11 @@ config ADK_TARGET_OS_ZEPHYR
 	help
 	  Create a zephyr appliance or toolchain.
 
-config ADK_TARGET_OS_BAREMETAL
-	bool "Bare metal"
-	help
-	  Create a bare metal appliance or toolchain.
-
 endchoice
+
+config ADK_TARGET_OS
+	string
+	default "linux" if ADK_TARGET_OS_LINUX
+	default "frosted" if ADK_TARGET_OS_FROSTED
+	default "rtems5.0.0" if ADK_TARGET_OS_RTEMS
+	default "zephyr" if ADK_TARGET_OS_ZEPHYR

target/rtems/Makefile

@@ -0,0 +1,33 @@
+# This file is part of the OpenADK project. OpenADK is copyrighted
+# material, please see the LICENCE file in the top-level directory.
+
+include $(ADK_TOPDIR)/rules.mk
+
+prepare:
+	if [ ! -d $(BUILD_DIR)/rtems ]; then \
+		cd $(BUILD_DIR) ;\
+		git clone git://git.rtems.org/rtems.git ;\
+	fi
+	if [ ! -f $(BUILD_DIR)/rtems/configure ]; then \
+		cd $(BUILD_DIR)/rtems && ./bootstrap ;\
+	fi
+	-mkdir $(BUILD_DIR)/rtems-build
+	cd $(BUILD_DIR)/rtems-build && \
+		PATH='$(TARGET_PATH)' $(BUILD_DIR)/rtems/configure \
+		--prefix=$(BUILD_DIR)/rtems-install
+		--target=$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_OS) \
+		--enable-tests=samples \
+
+compile:
+	PATH='$(TARGET_PATH)' $(MAKE) -C \
+	     $(BUILD_DIR)/rtems-build
+
+install:
+	-mkdir $(BUILD_DIR)/rtems-install
+	PATH='$(TARGET_PATH)' $(MAKE) -C \
+	     $(BUILD_DIR)/rtems-build install
+
+clean:
+
+targethelp:
+

target/rtems/arch.lst

@@ -0,0 +1,14 @@
+arm
+bfin
+lm32
+m68k
+mips
+nios2
+or1k
+ppc
+riscv
+sh
+sparc
+sparc64
+x86
+x86_64

toolchain/gcc/Makefile

@@ -56,6 +56,8 @@ GCC_CONFOPTS:=		--prefix=$(TOOLCHAIN_DIR)/usr \
 			--disable-werror \
 			--disable-nls
 
+ifeq ($(ADK_TARGET_OS_LINUX),y)
+ifeq ($(ADK_TARGET_LIB_UCLIBC_NG),y)
 ifeq ($(ADK_TARGET_WITH_NPTL),y)
 GCC_FINAL_CONFOPTS:=	--enable-tls --enable-threads --enable-libatomic
 GCC_TLS_CONFOPTS:=	--enable-tls
@@ -68,6 +70,15 @@ ifeq ($(ADK_TARGET_LIB_WITHOUT_THREADS)$(ADK_TARGET_WITHOUT_THREADS),y)
 GCC_FINAL_CONFOPTS:=	--disable-tls --disable-threads --disable-libatomic
 GCC_TLS_CONFOPTS:=	--disable-tls
 endif
+else
+GCC_FINAL_CONFOPTS:=	--enable-tls --enable-threads --enable-libatomic
+GCC_TLS_CONFOPTS:=	--enable-tls
+endif
+endif
+
+ifeq ($(ADK_TARGET_OS_RTEMS),y)
+GCC_FINAL_CONFOPTS:=	--enable-libatomic
+endif
 
 ifeq ($(ADK_TARGET_LIB_NEWLIB),y)
 GCC_FINAL_CONFOPTS+=	--with-newlib