Add tizen riscv64 rootfs and cross build support

eng/common/cross/riscv64/tizen/tizen.patch

@@ -0,0 +1,9 @@
+diff -u -r a/usr/lib/libc.so b/usr/lib/libc.so
+--- a/usr/lib64/libc.so	2016-12-30 23:00:08.284951863 +0900
++++ b/usr/lib64/libc.so	2016-12-30 23:00:32.140951815 +0900
+@@ -2,4 +2,4 @@
+    Use the shared library, but some functions are only in
+    the static library, so try that secondarily.  */
+ OUTPUT_FORMAT(elf64-littleriscv)
+-GROUP ( /lib64/libc.so.6 /usr/lib64/libc_nonshared.a  AS_NEEDED ( /lib64/ld-linux-riscv64-lp64d.so.1 ) )
++GROUP ( libc.so.6 libc_nonshared.a  AS_NEEDED ( ld-linux-riscv64-lp64d.so.1 ) )

eng/common/cross/tizen-build-rootfs.sh

@@ -22,6 +22,10 @@ case "$ARCH" in
         TIZEN_ARCH="x86_64"
         LINK_ARCH="x86"
         ;;
+    riscv64)
+        TIZEN_ARCH="riscv64"
+        LINK_ARCH="riscv"
+        ;;
     *)
         echo "Unsupported architecture for tizen: $ARCH"
         exit 1
@@ -58,4 +62,21 @@ rm -rf $TIZEN_TMP_DIR
 echo ">>Start configuring Tizen rootfs"
 ln -sfn asm-${LINK_ARCH} ./usr/include/asm
 patch -p1 < $__TIZEN_CROSSDIR/tizen.patch
+if [[ "$TIZEN_ARCH" == "riscv64" ]]; then
+    echo "Fixing broken symlinks in $PWD"
+    rm ./usr/lib64/libresolv.so
+    ln -s ../../lib64/libresolv.so.2 ./usr/lib64/libresolv.so
+    rm ./usr/lib64/libpthread.so
+    ln -s ../../lib64/libpthread.so.0 ./usr/lib64/libpthread.so
+    rm ./usr/lib64/libdl.so
+    ln -s ../../lib64/libdl.so.2 ./usr/lib64/libdl.so
+    rm ./usr/lib64/libutil.so
+    ln -s ../../lib64/libutil.so.1 ./usr/lib64/libutil.so
+    rm ./usr/lib64/libm.so
+    ln -s ../../lib64/libm.so.6 ./usr/lib64/libm.so
+    rm ./usr/lib64/librt.so
+    ln -s ../../lib64/librt.so.1 ./usr/lib64/librt.so
+    rm ./lib/ld-linux-riscv64-lp64d.so.1
+    ln -s ../lib64/ld-linux-riscv64-lp64d.so.1 ./lib/ld-linux-riscv64-lp64d.so.1
+fi
 echo "<<Finish configuring Tizen rootfs"

eng/common/cross/tizen-fetch.sh

@@ -156,17 +156,28 @@ fetch_tizen_pkgs()
     done
 }
 
+if [ "$TIZEN_ARCH" == "riscv64" ]; then
+    BASE="Tizen-Base-RISCV"
+    UNIFIED="Tizen-Unified-RISCV"
+else
+    BASE="Tizen-Base"
+    UNIFIED="Tizen-Unified"
+fi
+
 Inform "Initialize ${TIZEN_ARCH} base"
-fetch_tizen_pkgs_init standard Tizen-Base
+fetch_tizen_pkgs_init standard $BASE
 Inform "fetch common packages"
 fetch_tizen_pkgs ${TIZEN_ARCH} gcc gcc-devel-static glibc glibc-devel libicu libicu-devel libatomic linux-glibc-devel keyutils keyutils-devel libkeyutils
 Inform "fetch coreclr packages"
-fetch_tizen_pkgs ${TIZEN_ARCH} lldb lldb-devel libgcc libstdc++ libstdc++-devel libunwind libunwind-devel lttng-ust-devel lttng-ust userspace-rcu-devel userspace-rcu
+fetch_tizen_pkgs ${TIZEN_ARCH} libgcc libstdc++ libstdc++-devel libunwind libunwind-devel lttng-ust-devel lttng-ust userspace-rcu-devel userspace-rcu
+if [ "$TIZEN_ARCH" != "riscv64" ]; then
+    fetch_tizen_pkgs ${TIZEN_ARCH} lldb lldb-devel
+fi
 Inform "fetch corefx packages"
 fetch_tizen_pkgs ${TIZEN_ARCH} libcom_err libcom_err-devel zlib zlib-devel libopenssl11 libopenssl1.1-devel krb5 krb5-devel
 
 Inform "Initialize standard unified"
-fetch_tizen_pkgs_init standard Tizen-Unified
+fetch_tizen_pkgs_init standard $UNIFIED
 Inform "fetch corefx packages"
 fetch_tizen_pkgs ${TIZEN_ARCH} gssdp gssdp-devel tizen-release
 

eng/common/cross/toolchain.cmake

@@ -40,7 +40,7 @@ if(TARGET_ARCH_NAME STREQUAL "arm")
     set(TOOLCHAIN "arm-linux-gnueabihf")
   endif()
   if(TIZEN)
-    set(TIZEN_TOOLCHAIN "armv7hl-tizen-linux-gnueabihf/9.2.0")
+    set(TIZEN_TOOLCHAIN "armv7hl-tizen-linux-gnueabihf/13.1.0")
   endif()
 elseif(TARGET_ARCH_NAME STREQUAL "arm64")
   set(CMAKE_SYSTEM_PROCESSOR aarch64)
@@ -49,7 +49,7 @@ elseif(TARGET_ARCH_NAME STREQUAL "arm64")
   elseif(LINUX)
     set(TOOLCHAIN "aarch64-linux-gnu")
     if(TIZEN)
-      set(TIZEN_TOOLCHAIN "aarch64-tizen-linux-gnu/9.2.0")
+      set(TIZEN_TOOLCHAIN "aarch64-tizen-linux-gnu/13.1.0")
     endif()
   elseif(FREEBSD)
     set(triple "aarch64-unknown-freebsd12")
@@ -58,7 +58,7 @@ elseif(TARGET_ARCH_NAME STREQUAL "armel")
   set(CMAKE_SYSTEM_PROCESSOR armv7l)
   set(TOOLCHAIN "arm-linux-gnueabi")
   if(TIZEN)
-    set(TIZEN_TOOLCHAIN "armv7l-tizen-linux-gnueabi/9.2.0")
+    set(TIZEN_TOOLCHAIN "armv7l-tizen-linux-gnueabi/13.1.0")
   endif()
 elseif(TARGET_ARCH_NAME STREQUAL "armv6")
   set(CMAKE_SYSTEM_PROCESSOR armv6l)
@@ -80,6 +80,9 @@ elseif(TARGET_ARCH_NAME STREQUAL "riscv64")
     set(TOOLCHAIN "riscv64-alpine-linux-musl")
   else()
     set(TOOLCHAIN "riscv64-linux-gnu")
+    if(TIZEN)
+      set(TIZEN_TOOLCHAIN "riscv64-tizen-linux-gnu/13.1.0")
+    endif()
   endif()
 elseif(TARGET_ARCH_NAME STREQUAL "s390x")
   set(CMAKE_SYSTEM_PROCESSOR s390x)
@@ -95,7 +98,7 @@ elseif(TARGET_ARCH_NAME STREQUAL "x64")
   elseif(LINUX)
     set(TOOLCHAIN "x86_64-linux-gnu")
     if(TIZEN)
-      set(TIZEN_TOOLCHAIN "x86_64-tizen-linux-gnu/9.2.0")
+      set(TIZEN_TOOLCHAIN "x86_64-tizen-linux-gnu/13.1.0")
     endif()
   elseif(FREEBSD)
     set(triple "x86_64-unknown-freebsd12")
@@ -112,7 +115,7 @@ elseif(TARGET_ARCH_NAME STREQUAL "x86")
     set(TOOLCHAIN "i686-linux-gnu")
   endif()
   if(TIZEN)
-    set(TIZEN_TOOLCHAIN "i586-tizen-linux-gnu/9.2.0")
+    set(TIZEN_TOOLCHAIN "i586-tizen-linux-gnu/13.1.0")
   endif()
 else()
   message(FATAL_ERROR "Arch is ${TARGET_ARCH_NAME}. Only arm, arm64, armel, armv6, ppc64le, riscv64, s390x, x64 and x86 are supported!")
@@ -144,6 +147,10 @@ if(TIZEN)
     include_directories(SYSTEM ${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}/include/c++/)
     include_directories(SYSTEM ${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}/include/c++/x86_64-tizen-linux-gnu)
   endif()
+  if(TARGET_ARCH_NAME STREQUAL "riscv64")
+    include_directories(SYSTEM ${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}/include/c++/)
+    include_directories(SYSTEM ${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}/include/c++/riscv64-tizen-linux-gnu)
+  endif()
 endif()
 
 if(ANDROID)
@@ -270,7 +277,7 @@ if(TARGET_ARCH_NAME MATCHES "^(arm|armel)$")
     add_toolchain_linker_flag("-L${CROSS_ROOTFS}/usr/lib")
     add_toolchain_linker_flag("-L${CROSS_ROOTFS}/usr/lib/gcc/${TIZEN_TOOLCHAIN}")
   endif()
-elseif(TARGET_ARCH_NAME MATCHES "^(arm64|x64)$")
+elseif(TARGET_ARCH_NAME MATCHES "^(arm64|x64|riscv64)$")
   if(TIZEN)
     add_toolchain_linker_flag("-B${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}")
     add_toolchain_linker_flag("-L${CROSS_ROOTFS}/lib64")