Add a "--with-xlen=*" argument to build.sh (#39)priv-1.7

A few people have run into trouble building a consistent 32-bit
userspace.  With any luck, this will aid them.

1 files changed, 13 insertions, 3 deletions

diff --git a/build.sh b/build.sh
index b79ad23..9a67525 100755
--- a/build.sh
+++ b/build.sh
@@ -3,14 +3,24 @@
 # Script to build RISC-V ISA simulator, proxy kernel, and GNU toolchain.
 # Tools will be installed to $RISCV.
 
+with_xlen=64
+while [[ "$1" != "" ]]
+do
+   case "$1" in
+   --with-xlen=*) with_xlen="$(echo "$1" | cut -d= -f2-)" ;;
+   *) echo "Unknown argument $1" >2; exit 1;;
+   esac
+   shift
+done
+
 . build.common
 
 echo "Starting RISC-V Toolchain build process"
 
 build_project riscv-fesvr --prefix=$RISCV
 build_project riscv-isa-sim --prefix=$RISCV --with-fesvr=$RISCV
-build_project riscv-gnu-toolchain --prefix=$RISCV
-CC= CXX= build_project riscv-pk --prefix=$RISCV/riscv64-unknown-elf --host=riscv64-unknown-elf
-build_project riscv-tests --prefix=$RISCV/riscv64-unknown-elf
+build_project riscv-gnu-toolchain --prefix=$RISCV --with-xlen="$with_xlen"
+CC= CXX= build_project riscv-pk --prefix=$RISCV/riscv"$with_xlen"-unknown-elf --host=riscv"$with_xlen"-unknown-elf
+build_project riscv-tests --prefix=$RISCV/riscv"$with_xlen"-unknown-elf
 
 echo -e "\\nRISC-V Toolchain installation completed!"