kumquat-buildroot/package/ejabberd/ejabberd.mk
Arnout Vandecappelle 7d69a79624 packages: use backtick instead of $(shell ...) make function
It is often difficult to know exactly when make will expand the
variable, and usually it can only be expanded after the dependencies
have been built (e.g. pkg-config or the .pc file). Using a backtick
instead makes it very clear that it will be expanded only while
executing the command.

This change is useful for two cases:

1. The per-package staging (and host) directory will be created as part
   of the configure step, so any $(shell ...) variable that is used in
   the configure step will fail because the directory doesn't exist
   yet.

2. 'make printvars' evaluates the variables it prints. It will therefore
   trigger a lot of errors from missing .pc files and others. The
   backticks, on the other hand, are not expanded, so with this change
   the output of 'make printvars' becomes clean again.

This commit contains only the easy changes: replace $(shell ...) with
`...`, and also replace ' with " where needed. Follow-up commits will
tackle the more complicated cases that need additional explanation.

After this change, the following instances of $(shell ...) will remain:

- All assignments that use :=
- All variables that are used in make conditionals (which don't expand
  the backticks).
- All variables that only refer to system executables and make
  variables that don't change.
- The calls to check-host-* in dependencies.mk, because it is eval'ed.

[Original patch by Fabio Porcedda, but extended quite a bit by Arnout.]

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-07-15 00:42:01 +02:00

52 lines
1.6 KiB
Makefile

################################################################################
#
# ejabberd
#
################################################################################
EJABBERD_VERSION = 15.06
EJABBERD_SITE = $(call github,processone,ejabberd,$(EJABBERD_VERSION))
EJABBERD_LICENSE = GPLv2+ with OpenSSL exception
EJABBERD_LICENSE_FILES = COPYING
EJABBERD_DEPENDENCIES = getent openssl host-erlang-lager erlang-lager \
erlang-p1-cache-tab erlang-p1-iconv erlang-p1-sip \
erlang-p1-stringprep erlang-p1-xml erlang-p1-yaml erlang-p1-zlib
EJABBERD_USE_AUTOCONF = YES
EJABBERD_AUTORECONF = YES
ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
EJABBERD_DEPENDENCIES += linux-pam
endif
EJABBERD_ERLANG_LIBS = sasl crypto public_key ssl mnesia inets compiler
# Guess answers for these tests, configure will bail out otherwise
# saying error: cannot run test program while cross compiling.
EJABBERD_CONF_ENV = \
ac_cv_erlang_root_dir="$(HOST_DIR)/usr/lib/erlang" \
$(foreach lib,$(EJABBERD_ERLANG_LIBS), \
ac_cv_erlang_lib_dir_$(lib)="`package/ejabberd/check-erlang-lib $(lib)`")
define EJABBERD_INSTALL_TARGET_CMDS
$(TARGET_MAKE_ENV) $(MAKE) DESTDIR=$(TARGET_DIR) install -C $(@D)
endef
# Delete HOST_DIR prefix from ERL path in ejabberctl script.
define EJABBERD_FIX_EJABBERDCTL
$(SED) 's,ERL=$(HOST_DIR),ERL=,' '$(TARGET_DIR)/usr/sbin/ejabberdctl'
endef
EJABBERD_POST_INSTALL_TARGET_HOOKS += EJABBERD_FIX_EJABBERDCTL
define EJABBERD_USERS
ejabberd -1 ejabberd -1 * /var/lib/ejabberd /bin/sh - ejabberd daemon
endef
define EJABBERD_INSTALL_INIT_SYSV
$(INSTALL) -D -m 0755 package/ejabberd/S50ejabberd \
$(TARGET_DIR)/etc/init.d/S50ejabberd
endef
$(eval $(rebar-package))