Support NO_UI if libraries aren't found on Linux

misc/factor.sh

@@ -10,6 +10,7 @@ shopt -s nocaseglob
 OS=
 ARCH=
 WORD=
+NO_UI=0
 
 ensure_program_installed() {
 	echo -n "Checking for $1..."
@@ -49,6 +50,34 @@ check_installed_programs() {
 	check_gcc_version
 }
 
+check_library_exists() {
+	GCC_TEST=factor-library-test.c
+	GCC_OUT=factor-library-test.out
+	echo "Checking for library $1"
+	echo "int main(){return 0;}" > $GCC_TEST
+	gcc $GCC_TEST -o $GCC_OUT -l $1
+	if [[ $? -ne 0 ]] ; then
+		echo "Warning: library $1 not found."
+		echo "***Factor will compile NO_UI=1"
+		NO_UI=1
+	fi
+	rm -f GCC_TEST
+	rm -f GCC_OUT
+}
+
+check_X11_libraries() {
+	check_library_exists freetype
+	check_library_exists GLU
+	check_library_exists GL
+	check_library_exists X11
+}
+
+check_libraries() {
+	case $OS in
+		linux) check_X11_libraries;;
+	esac
+}
+
 check_factor_exists() {
 	if [[ -d "factor" ]] ; then
 		echo "A directory called 'factor' already exists."
@@ -151,7 +180,7 @@ make_clean() {
 }
 
 make_factor() {
-	make $MAKE_TARGET -j5
+	make NO_UI=$NO_UI $MAKE_TARGET -j5
 	check_ret make
 }
 
@@ -185,31 +214,33 @@ usage() {
 	echo "usage: $0 install|update"
 }
 
-case "$1" in
-	install)
+install() {
 	check_factor_exists
 	check_installed_programs
 	find_build_info
+	check_libraries
 	git_clone
 	cd_factor
 	make_factor
 	get_boot_image
 	maybe_download_dlls
 	bootstrap
-	;;
+}
 
-	update)
+update() {
 	check_installed_programs
 	find_build_info
+	check_libraries
 	git_pull_factorcode
 	make_clean
 	make_factor
 	delete_boot_images
 	get_boot_image
 	bootstrap
-	;;
+}
 
-	*)
-		usage
-	;;
+case "$1" in
+	install) install ;;
+	update) update ;;
+	*) usage ;;
 esac