diff --git a/packages/libllvm/build.sh b/packages/libllvm/build.sh
index 3044c9fb2..fde8f095e 100644
--- a/packages/libllvm/build.sh
+++ b/packages/libllvm/build.sh
@@ -58,9 +58,11 @@ TERMUX_PKG_HAS_DEBUG=false
 # common.min.50.ompt.optional should be common.deb.50.ompt.optional when doing debug build
 
 termux_step_post_extract_package() {
-	mv clang-${TERMUX_PKG_VERSION}.src tools/clang
-	mv lld-${TERMUX_PKG_VERSION}.src tools/lld
-	mv openmp-${TERMUX_PKG_VERSION}.src projects/openmp
+	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+		mv clang-${TERMUX_PKG_VERSION}.src tools/clang
+		mv lld-${TERMUX_PKG_VERSION}.src tools/lld
+		mv openmp-${TERMUX_PKG_VERSION}.src projects/openmp
+	fi
 }
 
 termux_step_host_build() {
@@ -72,9 +74,11 @@ termux_step_host_build() {
 }
 
 termux_step_pre_configure() {
-	mkdir projects/openmp/runtime/src/android
-	cp $TERMUX_PKG_BUILDER_DIR/nl_types.h projects/openmp/runtime/src/android
-	cp $TERMUX_PKG_BUILDER_DIR/nltypes_stubs.cpp projects/openmp/runtime/src/android
+	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+		mkdir projects/openmp/runtime/src/android
+		cp $TERMUX_PKG_BUILDER_DIR/nl_types.h projects/openmp/runtime/src/android
+		cp $TERMUX_PKG_BUILDER_DIR/nltypes_stubs.cpp projects/openmp/runtime/src/android
+	fi
 
 	cd $TERMUX_PKG_BUILDDIR
 	export LLVM_DEFAULT_TARGET_TRIPLE=$TERMUX_HOST_PLATFORM
diff --git a/scripts/build/termux_step_patch_package.sh b/scripts/build/termux_step_patch_package.sh
index ddba5a53b..033bc9fd0 100644
--- a/scripts/build/termux_step_patch_package.sh
+++ b/scripts/build/termux_step_patch_package.sh
@@ -6,12 +6,14 @@ termux_step_patch_package() {
 	if [ "$TERMUX_DEBUG" = "true" ]; then
 		DEBUG_PATCHES=$(find $TERMUX_PKG_BUILDER_DIR -mindepth 1 -maxdepth 1 -name \*.patch.debug)
 	fi
-	# Suffix patch with ".patch32" or ".patch64" to only apply for these bitnesses:
-	shopt -s nullglob
-	for patch in $TERMUX_PKG_BUILDER_DIR/*.patch{$TERMUX_ARCH_BITS,} $DEBUG_PATCHES; do
-		test -f "$patch" && sed "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" "$patch" | \
-			sed "s%\@TERMUX_HOME\@%${TERMUX_ANDROID_HOME}%g" | \
-			patch --silent -p1
-	done
-	shopt -u nullglob
+	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+		# Suffix patch with ".patch32" or ".patch64" to only apply for these bitnesses:
+		shopt -s nullglob
+		for patch in $TERMUX_PKG_BUILDER_DIR/*.patch{$TERMUX_ARCH_BITS,} $DEBUG_PATCHES; do
+			test -f "$patch" && sed "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" "$patch" | \
+				sed "s%\@TERMUX_HOME\@%${TERMUX_ANDROID_HOME}%g" | \
+				patch --silent -p1
+		done
+		shopt -u nullglob
+	fi
 }
diff --git a/scripts/build/termux_step_setup_variables.sh b/scripts/build/termux_step_setup_variables.sh
index e59a85aac..15c09d01a 100644
--- a/scripts/build/termux_step_setup_variables.sh
+++ b/scripts/build/termux_step_setup_variables.sh
@@ -133,6 +133,7 @@ termux_step_setup_variables() {
 	TERMUX_CMAKE_BUILD=Ninja # Which cmake generator to use
 	TERMUX_PKG_HAS_DEBUG=true # set to false if debug build doesn't exist or doesn't work, for example for python based packages
 	TERMUX_PKG_METAPACKAGE=false
+	TERMUX_PKG_QUICK_REBUILD=false # set this temporarily when iterating on a large package and you don't want the source and build directories wiped every time you make a mistake
 
 	unset CFLAGS CPPFLAGS LDFLAGS CXXFLAGS
 }
diff --git a/scripts/build/termux_step_start_build.sh b/scripts/build/termux_step_start_build.sh
index d15f328c3..4eb2a894b 100644
--- a/scripts/build/termux_step_start_build.sh
+++ b/scripts/build/termux_step_start_build.sh
@@ -128,15 +128,21 @@ termux_step_start_build() {
                         -e "s|@TERMUX_ARCH@|$TERMUX_ARCH|g" > $TERMUX_PREFIX/bin/llvm-config
                         chmod 755 $TERMUX_PREFIX/bin/llvm-config
 	fi
-	# Following directories may contain files with read-only permissions which
-	# makes them undeletable. We need to fix that.
-	[ -d "$TERMUX_PKG_BUILDDIR" ] && chmod +w -R "$TERMUX_PKG_BUILDDIR"
-	[ -d "$TERMUX_PKG_SRCDIR" ] && chmod +w -R "$TERMUX_PKG_SRCDIR"
+	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+		# Following directories may contain files with read-only permissions which
+		# makes them undeletable. We need to fix that.
+		[ -d "$TERMUX_PKG_BUILDDIR" ] && chmod +w -R "$TERMUX_PKG_BUILDDIR"
+		[ -d "$TERMUX_PKG_SRCDIR" ] && chmod +w -R "$TERMUX_PKG_SRCDIR"
 
-	# Cleanup old state:
-	rm -Rf "$TERMUX_PKG_BUILDDIR" \
-		"$TERMUX_PKG_PACKAGEDIR" \
-		"$TERMUX_PKG_SRCDIR" \
+		# Cleanup old build state:
+		rm -Rf "$TERMUX_PKG_BUILDDIR" \
+			"$TERMUX_PKG_SRCDIR"
+	else
+		TERMUX_PKG_SKIP_SRC_EXTRACT=true
+	fi
+
+	# Cleanup old packaging state:
+	rm -Rf "$TERMUX_PKG_PACKAGEDIR" \
 		"$TERMUX_PKG_TMPDIR" \
 		"$TERMUX_PKG_MASSAGEDIR"