depends: Add RISC-V support

depends/.gitignore

@@ -8,3 +8,5 @@ i686*
 mips*
 arm*
 aarch64*
+riscv32*
+riscv64*

depends/Makefile

@@ -167,7 +167,7 @@ $(host_prefix)/share/config.site: check-packages
 check-packages: check-sources
 
 clean-all: clean
-	@rm -rf $(SOURCES_PATH) x86_64* i686* mips* arm* aarch64*
+	@rm -rf $(SOURCES_PATH) x86_64* i686* mips* arm* aarch64* riscv32* riscv64*
 
 clean:
 	@rm -rf $(WORK_PATH) $(BASE_CACHE) $(BUILD)

depends/README.md

@@ -25,6 +25,8 @@ Common `host-platform-triplets` for cross compilation are:
 - `x86_64-apple-darwin11` for macOS
 - `arm-linux-gnueabihf` for Linux ARM 32 bit
 - `aarch64-linux-gnu` for Linux ARM 64 bit
+- `riscv32-linux-gnu` for Linux RISC-V 32 bit
+- `riscv64-linux-gnu` for Linux RISC-V 64 bit
 
 No other options are needed, the paths are automatically configured.
 
@@ -43,6 +45,9 @@ For linux (including i386, ARM) cross compilation:
 
     sudo apt-get install curl g++-aarch64-linux-gnu g++-4.8-aarch64-linux-gnu gcc-4.8-aarch64-linux-gnu binutils-aarch64-linux-gnu g++-arm-linux-gnueabihf g++-4.8-arm-linux-gnueabihf gcc-4.8-arm-linux-gnueabihf binutils-arm-linux-gnueabihf g++-4.8-multilib gcc-4.8-multilib binutils-gold bsdmainutils
 
+For linux RISC-V 64-bit cross compilation (there are no packages for 32-bit):
+
+    sudo apt-get install curl g++-riscv64-linux-gnu binutils-riscv64-linux-gnu
 
 Dependency Options:
 The following can be set when running make: make FOO=bar

depends/packages/openssl.mk

@@ -52,6 +52,8 @@ $(package)_config_opts_aarch64_linux=linux-generic64
 $(package)_config_opts_mipsel_linux=linux-generic32
 $(package)_config_opts_mips_linux=linux-generic32
 $(package)_config_opts_powerpc_linux=linux-generic32
+$(package)_config_opts_riscv32_linux=linux-generic32
+$(package)_config_opts_riscv64_linux=linux-generic64
 $(package)_config_opts_x86_64_darwin=darwin64-x86_64-cc
 $(package)_config_opts_x86_64_mingw32=mingw64
 $(package)_config_opts_i686_mingw32=mingw