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-rw-r--r--share/mk/compress.mk40
1 files changed, 40 insertions, 0 deletions
diff --git a/share/mk/compress.mk b/share/mk/compress.mk
new file mode 100644
index 0000000..6502930
--- /dev/null
+++ b/share/mk/compress.mk
@@ -0,0 +1,40 @@
+########################################################################
+# Copyright 2023 Alejandro Colomar <alx@kernel.org>
+# SPDX-License-Identifier: GPL-3.0-or-later
+########################################################################
+
+
+ifndef MAKEFILE_COMPRESS_INCLUDED
+MAKEFILE_COMPRESS_INCLUDED := 1
+
+
+Z :=
+ifeq ($(Z),)
+else ifeq ($(Z),.bz2)
+else ifeq ($(Z),.gz)
+else ifeq ($(Z),.lz)
+else ifeq ($(Z),.xz)
+else
+$(warning "Z": "$(Z)")
+$(error Valid values for "Z": ["", ".bz2", ".gz", ".lz", ".xz"])
+endif
+
+
+DEFAULT_BZIP2FLAGS :=
+EXTRA_BZIP2FLAGS :=
+BZIP2FLAGS := $(DEFAULT_BZIP2FLAGS) $(EXTRA_BZIP2FLAGS)
+
+DEFAULT_GZIPFLAGS :=
+EXTRA_GZIPFLAGS :=
+GZIPFLAGS := $(DEFAULT_GZIPFLAGS) $(EXTRA_GZIPFLAGS)
+
+DEFAULT_LZIPFLAGS :=
+EXTRA_LZIPFLAGS :=
+LZIPFLAGS := $(DEFAULT_LZIPFLAGS) $(EXTRA_LZIPFLAGS)
+
+DEFAULT_XZFLAGS :=
+EXTRA_XZFLAGS :=
+XZFLAGS := $(DEFAULT_XZFLAGS) $(EXTRA_XZFLAGS)
+
+
+endif # include guard