Sources + Header Build

Added Source pulling via curl.

scripts/check.sh

@@ -0,0 +1,12 @@
+#/bin/sh
+
+while IFS= read -r url; do \
+[ -z "$url" ] && continue; \
+fname="$(printf '%s' "$url" | sed -E 's/[?#].*$//' | sed -E 's!.*/!!')"; \
+if [ -e "$(OUTDIR)/$fname" ]; then \
+	printf "SKIP: %s (already exists)\n" "$fname"; \
+else \
+	printf "GET: %s -> %s\n" "$url" "$fname"; \
+	curl -o "./sources/$fname" "$url" || { printf "ERROR: failed to download %s\n" "$url"; exit 1; }; \
+fi; \
+done < ${SOURCES_FILE}; \

scripts/headers.sh

@@ -0,0 +1,27 @@
+#/bin/sh
+
+ARCH=$(uname -m)
+FROOT="${ARCH}-musllvm"
+LINUX_TAR=$(printf '%s' "$url" | sed -E 's/[?#].*$//' | sed -E 's!.*/!!' | grep -i linux)
+LINUX_SOURCE="${LINUX_TAR%%.tar*}"
+
+if command -v "clang" >/dev/null 2>&1 && command -v "lld" >/dev/null 2>&1; then
+        export LLVM=1
+        export LLVM=IAS
+fi
+
+tar -xpf ./sources/${LINUX_TAR} ./build
+
+mkdir -pv ./build/${FROOT}/include
+
+echo "Building Headers"
+pushd ./build/${LINUX_SOURCE}
+
+make mrproper
+make headers
+find usr/include \( -name .install -o -name ..install.cmd \) -exec rm -vf {} \;
+cp -rv usr/include/* ../${FROOT}/include/
+rm -v ../${FROOT}/include/Makefile
+
+popd
+