Finally, here's the hardest part. Create a file named
Makefile. It will contain the Makefile rules that
are in charge of downloading, configuring, compiling and installing
- the software. Below is an example that we will comment
- afterwards.
1 # $Id$
- 2 include $(TOPDIR)/rules.mk
- 3 PKG_NAME:=foo
- 4 PKG_VERSION:=1.0
- 5 PKG_RELEASE:=1
- 6 PKG_MD5SUM:=4584f226523776a3cdd2fb6f8212ba8d
- 8 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
- 9 PKG_SOURCE_URL:=http://www.foosoftware.org/downloads
- 10 PKG_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
- 11 PKG_IPK:=$(PACKAGE_DIR)/$(PKG_NAME)_$(PKG_VERSION)-$(PKG_RELEASE)_$(ARCH).ipk
- 12 PKG_IPK_DIR:=$(PKG_DIR)/ipkg
- 13
- 14 $(DL_DIR)/$(PKG_SOURCE):
- 15 $(SCRIPT_DIR)/download.pl $(DL_DIR) $(PKG_SOURCE) $(PKG_MD5SUM) $(PKG_SOURCE_URL)
+ 2
+ 3 include $(TOPDIR)/rules.mk
+ 4
+ 5 PKG_NAME:=foo
+ 6 PKG_VERSION:=1.0
+ 7 PKG_RELEASE:=1
+ 8 PKG_MD5SUM:=4584f226523776a3cdd2fb6f8212ba8d
+ 9
+ 10 PKG_SOURCE_URL:=http://www.foosoftware.org/downloads
+ 11 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+ 12 PKG_CAT:=zcat
+ 13
+ 14 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+ 15 PKG_INSTALL_DIR:=$(PKG_BUILD_DIR)/ipkg-install
16
- 17 $(PKG_DIR)/.source: $(DL_DIR)/$(PKG_SOURCE)
- 18 zcat $(DL_DIR)/$(PKG_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
- 19 touch $(PKG_DIR)/.source
+ 17 include $(TOPDIR)/package/rules.mk
+ 18
+ 19 $(eval $(call PKG_template,FOO,foo,$(PKG_VERSION)-$(PKG_RELEASE),$(ARCH)))
20
- 21 $(PKG_DIR)/.configured: $(PKG_DIR)/.source
- 22 (cd $(PKG_DIR); \
+ 21 $(PKG_BUILD_DIR)/.configured: $(PKG_BUILD_DIR)/.prepared
+ 22 (cd $(PKG_BUILD_DIR); \
23 $(TARGET_CONFIGURE_OPTS) \
24 CFLAGS="$(TARGET_CFLAGS)" \
25 ./configure \
@@ -485,36 +485,37 @@ foo-compile: bar-compile
28 --build=$(GNU_HOST_NAME) \
29 --prefix=/usr \
30 --sysconfdir=/etc \
- 31 );
- 32 touch $(PKG_DIR)/.configured;
- 33
- 34 $(PKG_DIR)/$(PKG_NAME): $(PKG_DIR)/.configured
- 35 $(MAKE) CC=$(TARGET_CC) -C $(PKG_DIR)
- 36
- 37 $(PKG_IPK): $(PKG_DIR)/$(PKG_NAME)
- 38 $(SCRIPT_DIR)/make-ipkg-dir.sh $(PKG_IPK_DIR) $(PKG_NAME).control $(PKG_VERSION)-$(PKG_RELEASE) $(ARCH)
- 39 $(MAKE) prefix=$(PKG_IPK_DIR)/usr -C $(PKG_DIR) install
- 40 rm -Rf $(PKG_IPK_DIR)/usr/man
- 41 $(IPKG_BUILD) $(PKG_IPK_DIR) $(PACKAGE_DIR)
- 42
- 43 $(IPKG_STATE_DIR)/info/$(PKG_NAME).list: $(PKG_IPK)
- 44 $(IPKG) install $(PKG_IPK)
- 45
- 46 prepare: $(PKG_DIR)/.source
- 47 compile: $(PKG_IPK)
- 48 install: $(IPKG_STATE_DIR)/info/$(PKG_NAME).list
- 49 clean:
- 50 rm -rf $(PKG_DIR)
- 51 rm -f $(PKG_IPK)
+ 31 --with-bar="$(STAGING_DIR)/usr" \
+ 32 );
+ 33 touch $@
+ 34
+ 35 $(PKG_BUILD_DIR)/.built:
+ 36 rm -rf $(PKG_INSTALL_DIR)
+ 37 mkdir -p $(PKG_INSTALL_DIR)
+ 38 $(MAKE) -C $(PKG_BUILD_DIR) \
+ 39 $(TARGET_CONFIGURE_OPTS) \
+ 40 install_prefix="$(PKG_INSTALL_DIR)" \
+ 41 all install
+ 42 touch $@
+ 43
+ 44 $(IPKG_FOO):
+ 46 install -d -m0755 $(IDIR_FOO)/usr/sbin
+ 47 cp -fpR $(PKG_INSTALL_DIR)/usr/sbin/foo $(IDIR_FOO)/usr/sbin
+ 49 $(RSTRIP) $(IDIR_FOO)
+ 50 $(IPKG_BUILD) $(IDIR_FOO) $(PACKAGE_DIR)
+ 51
+ 52 mostlyclean:
+ 53 make -C $(PKG_BUILD_DIR) clean
+ 54 rm $(PKG_BUILD_DIR)/.built
First of all, this Makefile example works for a single
binary software. For other software such as libraries or more
complex stuff with multiple binaries, it should be adapted. Look at
- the other Makefile files in the package
+ the other Makefile files in the package/
directory.
At lines 3-12, a couple of useful variables are defined :
+At lines 5-15, a couple of useful variables are defined:
PKG_NAME : The package name, e.g. foo.PKG_RELEASE : The release number that will be
- appended to the version number of your ipkg package.
+ appended to the version number of your ipkg package.PKG_MD5SUM : The md5sum of the software archive.
-
- PKG_SOURCE : The name of the tarball of
- your package on the download website of FTP site. As you can see
- PKG_NAME and PKG_VERSION are used.PKG_MD5SUM : The md5sum of the software archive.PKG_SOURCE_URL : Space separated list of the HTTP
or FTP sites from which the archive is downloaded. It must include the complete
path to the directory where FOO_SOURCE can be
found.PKG_DIR : The directory into which the software
+ PKG_SOURCE : The name of the tarball of
+ your package on the download website of FTP site. As you can see
+ PKG_NAME and PKG_VERSION are used.PKG_CAT : The tool needed for extraction of the
+ software archive.PKG_BUILD_DIR : The directory into which the software
will be configured and compiled. Basically, it's a subdirectory
- of BUILD_DIR which is created upon decompression of
+ of BUILD_DIR which is created upon extraction of
the tarball.PKG_IPK : The resulting ipkg package
+ PKG_INSTALL_DIR : The directory into the software
+ will be installed. It is a subdirectory of PKG_BUILD_DIR.Lines 14-15 defines a target that downloads the tarball from
- the remote site to the download directory
- (DL_DIR).
Lines 17-19 defines a target and associated rules that - uncompress the downloaded tarball. As you can see, this target - depends on the tarball file, so that the previous target (line - 14-15) is called before executing the rules of the current - target. Uncompressing is followed by touching a hidden file - to mark the software has having been uncompressed. This trick is - used everywhere in Buildroot Makefile to split steps - (download, uncompress, configure, compile, install) while still - having correct dependencies.
- -Lines 21-32 defines a target and associated rules that +
In Line 3 and 17 we include common variables and routines to simplify + the process of ipkg creation. It includes routines to download, verify + and extract the software package archives.
+ +Line 19 contains the magic line which automatically creates the + ipkg for us.
+ +Lines 21-33 defines a target and associated rules that
configures the software. It depends on the previous target (the
- hidden .source file) so that we are sure the software has
+ hidden .prepared file) so that we are sure the software has
been uncompressed. In order to configure it, it basically runs the
well-known ./configurescript. As we may be doing
cross-compilation, target, host and
@@ -571,41 +569,21 @@ foo-compile: bar-compile
filesystem. Finally it creates a .configured file to
mark the software as configured.
Lines 34-35 defines a target and a rule that compiles the +
Lines 35-42 defines a target and a rule that compiles the
software. This target will create the binary file in the
compilation directory, and depends on the software being already
configured (hence the reference to the .configured
- file). It basically runs make inside the source
- directory.
Lines 37-41 defines a target and associated rules that create
- the ipkg package which can optionally be embedded into
- the resulting firmware image. It depends on the binary file in
- the source directory, to make sure the software has been compiled.
- It uses the make-ipkg-dir.sh script, which will create the ipkg
- build directory for your package, copy your control file into
- that directory and add version and architecture information.
- Then it calls the install target of the
- software Makefile by passing a prefix
- argument, so that the Makefile doesn't try to install
- the software inside host /usr but inside target
- /usr. After the installation, the
- /usr/man directory inside the target filesystem is
- removed to save space.
+ file). Afterwards it installs the resulting binary into the
+ PKG_INSTALL_DIR. It basically runs
+ make install inside the source directory.
Lines 44-50 defines a target and associated rules that create
+ the ipkg package, which can optionally be embedded into
+ the resulting firmware image. It manually installs all files you
+ want to integrate in your resulting ipkg. RSTRIP will
+ recursevily strip all binaries and libraries.
Finally IPKG_BUILD is called to create the package.
Line 43 and 44 define the installation target of your package, - which will embed the software into the target filesystem.
- -Lines 46-51 define the main targets that the Makefile in the
- package dir calls.
-
prepare : Download and unpack the sourcecompile : Compile the source and create the packageinstall : Embed the package into the target filesystemclean : Remove all the files created by the build processAs you can see, adding a software to buildroot is simply a @@ -614,12 +592,14 @@ foo-compile: bar-compile the software.
If you package software that might be useful for other persons, - don't forget to send a patch to OpenWrt developers !
+ don't forget to send a patch to OpenWrt developers! + Use the mail address: patches@openwrt.org +To learn more about OpenWrt Buildroot you can visit this - website: http://openwrt.org/
+To learn more about OpenWrt you can visit this website: + http://openwrt.org/