scripts: template_setup_posix: Use wget from host tools on macOS

The GNU Project does not distribute official binaries for wget on macOS,
and obtaining trustworthy pre-compiled wget binary on macOS outside
package managers can be difficult.

This commit updates the POSIX setup script to use the wget executable
included in the Zephyr SDK host tools to download the SDK components on
macOS.

Note that the system wget is still used on Linux because wget
availability is not an issue on Linux.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

scripts/template_setup_posix

@@ -213,7 +213,19 @@ echo
 
 # Check dependencies
 check_command cmake 90
-check_command wget 91
+[[ "${host}" =~ ^linux-.* ]] && check_command wget 91
+
+# Resolve wget binary path
+if [[ "${host}" =~ ^macos-.* ]]; then
+  # Use wget from the SDK host tools on macOS
+  wget=" \
+    ${PWD}/hosttools/opt/wget/bin/wget \
+     --ca-certificate ${PWD}/hosttools/opt/wget/etc/ssl/cert.pem \
+    "
+else
+  # Use the system wget on Linux
+  wget="wget"
+fi
 
 # Ask for user inputs if no argument is specified
 if [ "${interactive}" = "y" ]; then
@@ -238,7 +250,7 @@ if [ "${do_gnu_toolchain}" = "y" ]; then
     echo "Installing '${toolchain}' GNU toolchain ..."
 
     # Download toolchain archive
-    wget -q --show-progress -N -O "${toolchain_filename}" "${toolchain_uri}"
+    ${wget} -q --show-progress -N -O "${toolchain_filename}" "${toolchain_uri}"
     if [ $? != 0 ]; then
       rm -f "${toolchain_filename}"
       echo "ERROR: GNU toolchain download failed"
@@ -265,7 +277,7 @@ if [ "${do_llvm_toolchain}" = "y" ] && [ ! -d "llvm" ]; then
   toolchain_uri="${dl_rel_base}/${toolchain_filename}"
 
   # Download toolchain archive
-  wget -q --show-progress -N -O "${toolchain_filename}" "${toolchain_uri}"
+  ${wget} -q --show-progress -N -O "${toolchain_filename}" "${toolchain_uri}"
   if [ $? != 0 ]; then
     rm -f "${toolchain_filename}"
     echo "ERROR: LLVM toolchain download failed"