btrfs-progs: Add support for DISABLE_DOCUMENTATION

This commit adds the support for a make variable named
"DISABLE_DOCUMENTATION", which allows to disable the build of the
documentation. This is useful in contexts where the tools needed to
build the documentation are not necessarily available.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/Makefile b/Makefile
index 73ef386..28243de 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -57,10 +57,15 @@ btrfs_image_libs = -lpthread
 btrfs_fragments_libs = -lgd -lpng -ljpeg -lfreetype
 
 SUBDIRS =
-BUILDDIRS = $(patsubst %,build-%,$(SUBDIRS)) build-Documentation
-INSTALLDIRS = $(patsubst %,install-%,$(SUBDIRS)) install-Documentation
+BUILDDIRS = $(patsubst %,build-%,$(SUBDIRS))
+INSTALLDIRS = $(patsubst %,install-%,$(SUBDIRS))
 CLEANDIRS = $(patsubst %,clean-%,$(SUBDIRS))
 
+ifneq ($(DISABLE_DOCUMENTATION),1)
+BUILDDIRS += build-Documentation
+INSTALLDIRS += install-Documentation
+endif
+
 .PHONY: $(SUBDIRS)
 .PHONY: $(BUILDDIRS)
 .PHONY: $(INSTALLDIRS)