Statically link OpenOCD and Risc-V toolchain on Linux (#4)

* Build OpenOCD and Risc-V toolchain as static on Linux

* Reinstate Risc-V toolchain build

Author: will-v-pi

.github/workflows/build.yml

@@ -4,7 +4,7 @@ permissions:
   contents: write
 
 env:
-  SKIP_RISCV: 1
+  SKIP_RISCV: 0
 
 jobs:
   build_windows:

packages/linux/openocd/build-openocd.sh

@@ -2,6 +2,9 @@
 
 set -euo pipefail
 
+export CFLAGS=-static
+export LDFLAGS=-static
+
 cd openocd
 sed -i -e 's/uint /unsigned int /g' ./src/flash/nor/rp2040.c
 ./bootstrap

packages/linux/riscv/build-riscv-gcc.sh

@@ -2,6 +2,9 @@
 
 set -euo pipefail
 
+export CFLAGS=-static
+export LDFLAGS=-static
+
 INSTALLDIR="riscv-install"
 rm -rf $INSTALLDIR
 mkdir -p $INSTALLDIR