updated readme with correct infomation on toolchain install for linux systems.

Now tested as being able to build hex/binary/elf files using the
`otto.sh` menu option 2.

README.md

@@ -37,6 +37,7 @@ mkdir ./build && cd ./build
 mkdir /usr/local/riscv && chmod -R 0775 /usr/local/riscv
 
 # Setup to build newlib for 32bit embedded and compressed cpus.
+# Not needed for ch32fun as it uses musl
 ./configure --prefix=/usr/local/riscv --with-arch=rv32ec \
     --with-arch=rv32ec \
     --with-abi=ilp32e \
@@ -58,6 +59,36 @@ make -j4 build-binutils
 Pretty much the same as FreeBSD, just follow the toolchain's `README.md` files 
 instructions.
 
+First download the tar.gz file from the link in the requirements(Xpack).
+
+Once you've downloaded the latest release extract the archive into it's own
+file.
+
+You should then move the contents into a new directory like so.
+
+```sh
+sudo mkdir -p /opt/riscv
+tar -xvzf ./xpack<name_here>
+sudo mv ./xpack<name_here>/* /opt/riscv/
+```
+
+You will also need to add the location to your path so it's picked up in your
+terminal.
+
+```sh
+# Appends the new location on to the existing path variable.
+echo "export PATH=/opt/riscv/bin:$PATH" >> ~/.bashrc
+
+# Sources the bashrc(config file) to update current terminal session.
+source ~/.bashrc
+
+```
+
+After following the above steps you should now have a working RISC-V toolchain
+that can be used for development.
+
+
+
 
 ## TODO
 

riscv32-toolchain.cmake

@@ -33,14 +33,16 @@ set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
 if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "FreeBSD")
     message("OS:: FreeBSD")
     #set(NEWLIB /usr/local/riscv/riscv32-unknown-elf/include)
-    set(NEWLIB /usr/local/lib/gcc/riscv32-unknown-elf/11.3.00/include)
+    #set(NEWLIB /usr/local/lib/gcc/riscv32-unknown-elf/11.3.00/include)
-    set(CMAKE_C_COMPILER riscv32-unknown-elf-gcc)
+    set(NEWLIB /compat/linux/opt/riscv/riscv-none-elf/include)
-    set(CMAKE_CXX_COMPILER riscv32-unknown-elf-g++)
+    set(CMAKE_C_COMPILER riscv-none-elf-gcc)
-    set(CMAKE_ASM_COMPILER riscv32-unknown-elf-gcc)
+    set(CMAKE_CXX_COMPILER riscv-none-elf-g++)
+    set(CMAKE_ASM_COMPILER riscv-none-elf-gcc)
 
     # Don't know why this is here?
     #set(CMAKE_FIND_ROOT_PATH /usr/local/riscv/)
-    set(CMAKE_FIND_ROOT_PATH /usr/local/lib/gcc/riscv32-unknown-elf/)
+    #set(CMAKE_FIND_ROOT_PATH /usr/local/lib/gcc/riscv32-unknown-elf/)
+    set(CMAKE_FIND_ROOT_PATH /compat/linux/opt/riscv/)
 
     #set(CMAKE_SYSROOT "/usr/local/riscv/" /usr/local/riscv/riscv32-unknown-elf)