cfg.mk

# Customize Makefile.maint.                           -*- makefile -*-
# Copyright (C) 2008-2011 Red Hat, Inc.
# Copyright (C) 2003-2008 Free Software Foundation, Inc.

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Use alpha.gnu.org for alpha and beta releases.
# Use ftp.gnu.org for major releases.
gnu_ftp_host-alpha = alpha.gnu.org
gnu_ftp_host-beta = alpha.gnu.org
gnu_ftp_host-major = ftp.gnu.org
gnu_rel_host = $(gnu_ftp_host-$(RELEASE_TYPE))

url_dir_list = \
  ftp://$(gnu_rel_host)/gnu/coreutils

# We use .gnulib, not gnulib.
gnulib_dir = $(srcdir)/.gnulib

# Tests not to run as part of "make distcheck".
local-checks-to-skip =			\
  changelog-check			\
  check-AUTHORS				\
  makefile-check			\
  makefile_path_separator_check		\
  patch-check				\
  sc_GPL_version			\
  sc_always_defined_macros		\
  sc_cast_of_alloca_return_value	\
  sc_cross_check_PATH_usage_in_tests	\
  sc_dd_max_sym_length			\
  sc_error_exit_success			\
  sc_file_system			\
  sc_immutable_NEWS			\
  sc_makefile_path_separator_check	\
  sc_obsolete_symbols			\
  sc_prohibit_S_IS_definition		\
  sc_prohibit_atoi_atof			\
  sc_prohibit_hash_without_use		\
  sc_prohibit_jm_in_m4			\
  sc_prohibit_quote_without_use		\
  sc_prohibit_quotearg_without_use	\
  sc_prohibit_stat_st_blocks		\
  sc_root_tests				\
  sc_space_tab				\
  sc_sun_os_names			\
  sc_system_h_headers			\
  sc_texinfo_acronym			\
  sc_tight_scope			\
  sc_two_space_separator_in_usage	\
  sc_error_message_uppercase		\
  sc_program_name			\
  sc_require_test_exit_idiom		\
  sc_makefile_check			\
  sc_useless_cpp_parens

# Files that should never cause syntax check failures.
VC_LIST_ALWAYS_EXCLUDE_REGEX = ^docs/news.html.in$$

# Functions like free() that are no-ops on NULL arguments.
useless_free_options =				\
  --name=VIR_FREE				\
  --name=qemuCapsFree				\
  --name=sexpr_free				\
  --name=virBitmapFree                          \
  --name=virCPUDefFree				\
  --name=virCapabilitiesFree			\
  --name=virCapabilitiesFreeGuest		\
  --name=virCapabilitiesFreeGuestDomain		\
  --name=virCapabilitiesFreeGuestFeature	\
  --name=virCapabilitiesFreeGuestMachine	\
  --name=virCapabilitiesFreeHostNUMACell	\
  --name=virCapabilitiesFreeMachines		\
  --name=virCgroupFree				\
  --name=virCommandFree				\
  --name=virConfFreeList			\
  --name=virConfFreeValue			\
  --name=virDomainChrDefFree			\
  --name=virDomainChrSourceDefFree		\
  --name=virDomainControllerDefFree		\
  --name=virDomainDefFree			\
  --name=virDomainDeviceDefFree			\
  --name=virDomainDiskDefFree			\
  --name=virDomainEventCallbackListFree		\
  --name=virDomainEventFree			\
  --name=virDomainEventQueueFree		\
  --name=virDomainFSDefFree			\
  --name=virDomainGraphicsDefFree		\
  --name=virDomainHostdevDefFree		\
  --name=virDomainInputDefFree			\
  --name=virDomainNetDefFree			\
  --name=virDomainObjFree			\
  --name=virDomainSmartcardDefFree		\
  --name=virDomainSnapshotDefFree		\
  --name=virDomainSnapshotObjFree		\
  --name=virDomainSoundDefFree			\
  --name=virDomainVideoDefFree			\
  --name=virDomainWatchdogDefFree		\
  --name=virHashFree				\
  --name=virInterfaceDefFree			\
  --name=virInterfaceIpDefFree			\
  --name=virInterfaceObjFree			\
  --name=virInterfaceProtocolDefFree		\
  --name=virJSONValueFree			\
  --name=virLastErrFreeData			\
  --name=virNWFilterDefFree			\
  --name=virNWFilterEntryFree			\
  --name=virNWFilterHashTableFree		\
  --name=virNWFilterIPAddrLearnReqFree		\
  --name=virNWFilterIncludeDefFree		\
  --name=virNWFilterObjFree			\
  --name=virNWFilterRuleDefFree			\
  --name=virNWFilterRuleInstFree		\
  --name=virNetworkDefFree			\
  --name=virNetworkObjFree			\
  --name=virNodeDeviceDefFree			\
  --name=virNodeDeviceObjFree			\
  --name=virSecretDefFree			\
  --name=virStorageEncryptionFree		\
  --name=virStorageEncryptionSecretFree		\
  --name=virStoragePoolDefFree			\
  --name=virStoragePoolObjFree			\
  --name=virStoragePoolSourceFree		\
  --name=virStorageVolDefFree			\
  --name=virThreadPoolFree			\
  --name=xmlFree				\
  --name=xmlXPathFreeContext			\
  --name=xmlXPathFreeObject

# The following template was generated by this command:
# make ID && aid free|grep '^vi'|sed 's/ .*//;s/^/#   /'
# N virBufferFreeAndReset
# y virCPUDefFree
# y virCapabilitiesFree
# y virCapabilitiesFreeGuest
# y virCapabilitiesFreeGuestDomain
# y virCapabilitiesFreeGuestFeature
# y virCapabilitiesFreeGuestMachine
# y virCapabilitiesFreeHostNUMACell
# y virCapabilitiesFreeMachines
# N virCapabilitiesFreeNUMAInfo FIXME
# y virCgroupFree
# N virConfFree               (diagnoses the "error")
# y virConfFreeList
# y virConfFreeValue
# y virDomainChrDefFree
# y virDomainControllerDefFree
# y virDomainDefFree
# y virDomainDeviceDefFree
# y virDomainDiskDefFree
# y virDomainEventCallbackListFree
# y virDomainEventFree
# y virDomainEventQueueFree
# y virDomainFSDefFree
# n virDomainFree
# n virDomainFreeName (can't fix -- returns int)
# y virDomainGraphicsDefFree
# y virDomainHostdevDefFree
# y virDomainInputDefFree
# y virDomainNetDefFree
# y virDomainObjFree
# y virDomainSnapshotDefFree
# n virDomainSnapshotFree (returns int)
# n virDomainSnapshotFreeName (returns int)
# y virDomainSnapshotObjFree
# y virDomainSoundDefFree
# y virDomainVideoDefFree
# y virDomainWatchdogDefFree
# n virDrvNodeGetCellsFreeMemory (returns int)
# n virDrvNodeGetFreeMemory (returns long long)
# n virFree (dereferences param)
# n virFreeError
# n virHashFree (takes 2 args)
# y virInterfaceDefFree
# n virInterfaceFree (returns int)
# n virInterfaceFreeName
# y virInterfaceIpDefFree
# y virInterfaceObjFree
# n virInterfaceObjListFree
# y virInterfaceProtocolDefFree
# y virJSONValueFree
# y virLastErrFreeData
# y virNWFilterDefFree
# y virNWFilterEntryFree
# n virNWFilterFree (returns int)
# y virNWFilterHashTableFree
# y virNWFilterIPAddrLearnReqFree
# y virNWFilterIncludeDefFree
# n virNWFilterFreeName (returns int)
# y virNWFilterObjFree
# n virNWFilterObjListFree FIXME
# y virNWFilterRuleDefFree
# n virNWFilterRuleFreeInstanceData (typedef)
# y virNWFilterRuleInstFree
# y virNetworkDefFree
# n virNetworkFree (returns int)
# n virNetworkFreeName (returns int)
# y virNetworkObjFree
# n virNetworkObjListFree FIXME
# n virNodeDevCapsDefFree FIXME
# y virNodeDeviceDefFree
# n virNodeDeviceFree (returns int)
# y virNodeDeviceObjFree
# n virNodeDeviceObjListFree FIXME
# n virNodeGetCellsFreeMemory (returns int)
# n virNodeGetFreeMemory (returns non-void)
# y virSecretDefFree
# n virSecretFree (returns non-void)
# n virSecretFreeName (2 args)
# n virSecurityLabelDefFree FIXME
# n virStorageBackendDiskMakeFreeExtent (returns non-void)
# y virStorageEncryptionFree
# y virStorageEncryptionSecretFree
# n virStorageFreeType (enum)
# y virStoragePoolDefFree
# n virStoragePoolFree (returns non-void)
# n virStoragePoolFreeName (returns non-void)
# y virStoragePoolObjFree
# n virStoragePoolObjListFree FIXME
# y virStoragePoolSourceFree
# y virStorageVolDefFree
# n virStorageVolFree (returns non-void)
# n virStorageVolFreeName (returns non-void)
# n virStreamFree

# Avoid uses of write(2).  Either switch to streams (fwrite), or use
# the safewrite wrapper.
sc_avoid_write:
	@prohibit='\<write *\('						\
	in_vc_files='\.c$$'						\
	halt='consider using safewrite instead of write'		\
	  $(_sc_search_regexp)

# Avoid functions that can lead to double-close bugs.
sc_prohibit_close:
	@prohibit='([^>.]|^)\<[fp]?close *\('				\
	halt='use VIR_{FORCE_}[F]CLOSE instead of [f]close'		\
	  $(_sc_search_regexp)
	@prohibit='\<fdopen *\('					\
	halt='use VIR_FDOPEN instead of fdopen'				\
	  $(_sc_search_regexp)

# Prefer virCommand for all child processes.
# XXX - eventually, we want to enhance this to also prohibit virExec.
sc_prohibit_fork_wrappers:
	@prohibit='= *\<(fork|popen|system) *\('			\
	halt='use virCommand for child processes'			\
	  $(_sc_search_regexp)

# Similar to the gnulib maint.mk rule for sc_prohibit_strcmp
# Use STREQLEN or STRPREFIX rather than comparing strncmp == 0, or != 0.
sc_prohibit_strncmp:
	@grep -nE '! *str''ncmp *\(|\<str''ncmp *\(.+\) *[!=]='		\
	    $$($(VC_LIST_EXCEPT))					\
	  | grep -vE ':# *define STR(N?EQLEN|PREFIX)\(' &&		\
	  { echo '$(ME): use STREQLEN or STRPREFIX instead of str''ncmp' \
		1>&2; exit 1; } || :

# Use virAsprintf rather than as'printf since *strp is undefined on error.
sc_prohibit_asprintf:
	@prohibit='\<v?a[s]printf\>'					\
	halt='use virAsprintf, not as'printf				\
	  $(_sc_search_regexp)

# Use snprintf rather than s'printf, even if buffer is provably large enough,
# since gnulib has more guarantees for snprintf portability
sc_prohibit_sprintf:
	@prohibit='\<[s]printf\>'					\
	halt='use snprintf, not s'printf				\
	  $(_sc_search_regexp)

sc_prohibit_strncpy:
	@prohibit='strncpy *\('						\
	halt='use virStrncpy, not strncpy'				\
	  $(_sc_search_regexp)

sc_prohibit_readlink:
	@prohibit='readlink *\('					\
	halt='use virFileResolveLink, not readlink'			\
	  $(_sc_search_regexp)

sc_prohibit_gethostname:
	@prohibit='gethostname *\('					\
	halt='use virGetHostname, not gethostname'			\
	  $(_sc_search_regexp)

sc_prohibit_gettext_noop:
	@prohibit='gettext_noop *\('					\
	halt='use N_, not gettext_noop'					\
	  $(_sc_search_regexp)

sc_prohibit_VIR_ERR_NO_MEMORY:
	@prohibit='\<V''IR_ERR_NO_MEMORY\>'				\
	halt='use virReportOOMError, not V'IR_ERR_NO_MEMORY		\
	  $(_sc_search_regexp)

# Use a subshell for each function, to give the optimal warning message.
include $(srcdir)/Makefile.nonreentrant
sc_prohibit_nonreentrant:
	@fail=0 ; \
	for i in $(NON_REENTRANT) ; \
	do \
	    (prohibit="\\<$$i *\\("					\
	     halt="use $${i}_r, not $$i"				\
	     $(_sc_search_regexp)					\
	    ) || fail=1;						\
	done ; \
	exit $$fail

# Prohibit the inclusion of <ctype.h>.
sc_prohibit_ctype_h:
	@prohibit='^# *include  *<ctype\.h>'				\
	halt="don't use ctype.h; instead, use c-ctype.h"		\
	  $(_sc_search_regexp)

# Ensure that no C source file, docs, or rng schema uses TABs for
# indentation.  Also match *.h.in files, to get libvirt.h.in.  Exclude
# files in gnulib, since they're imported.
sc_TAB_in_indentation:
	@prohibit='^ *	'						\
	in_vc_files='(\.(rng|[ch](\.in)?|html.in|py)|(daemon|tools)/.*\.in)$$' \
	halt='use leading spaces, not TAB, in C, sh, html, py, and RNG schemas' \
	  $(_sc_search_regexp)

ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
|isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper

sc_avoid_ctype_macros:
	@prohibit='\b($(ctype_re)) *\('					\
	halt="don't use ctype macros (use c-ctype.h)"			\
	  $(_sc_search_regexp)

sc_prohibit_virBufferAdd_with_string_literal:
	@prohibit='\<virBufferAdd *\([^,]+, *"[^"]'			\
	halt='use virBufferAddLit, not virBufferAdd, with a string literal' \
	  $(_sc_search_regexp)

# Not only do they fail to deal well with ipv6, but the gethostby*
# functions are also not thread-safe.
sc_prohibit_gethostby:
	@prohibit='\<gethostby(addr|name2?) *\('			\
	halt='use getaddrinfo, not gethostby*'				\
	  $(_sc_search_regexp)

# raw xmlGetProp requires some nasty casts
sc_prohibit_xmlGetProp:
	@prohibit='\<xmlGetProp *\('					\
	halt='use virXMLPropString, not xmlGetProp'			\
	  $(_sc_search_regexp)

# Many of the function names below came from this filter:
# git grep -B2 '\<_('|grep -E '\.c- *[[:alpha:]_][[:alnum:]_]* ?\(.*[,;]$' \
# |sed 's/.*\.c-  *//'|perl -pe 's/ ?\(.*//'|sort -u \
# |grep -vE '^(qsort|if|close|assert|fputc|free|N_|vir.*GetName|.*Unlock|virNodeListDevices|virHashRemoveEntry|freeaddrinfo|.*[fF]ree|xdrmem_create|xmlXPathFreeObject|virUUIDFormat|openvzSetProgramSentinal|polkit_action_unref)$'

msg_gen_function =
msg_gen_function += ESX_ERROR
msg_gen_function += ESX_VI_ERROR
msg_gen_function += macvtapError
msg_gen_function += remoteError
msg_gen_function += lxcError
msg_gen_function += networkLog
msg_gen_function += networkReportError
msg_gen_function += oneError
msg_gen_function += openvzError
msg_gen_function += qemuReportError
msg_gen_function += qemudDispatchClientFailure
msg_gen_function += regerror
msg_gen_function += remoteDispatchFormatError
msg_gen_function += umlReportError
msg_gen_function += vah_error
msg_gen_function += vah_warning
msg_gen_function += vboxError
msg_gen_function += virCommandError
msg_gen_function += virConfError
msg_gen_function += virDomainReportError
msg_gen_function += virHashError
msg_gen_function += virLibConnError
msg_gen_function += virLibDomainError
msg_gen_function += virNetworkReportError
msg_gen_function += virNodeDeviceReportError
msg_gen_function += virRaiseError
msg_gen_function += virReportErrorHelper
msg_gen_function += virReportSystemError
msg_gen_function += virSecurityReportError
msg_gen_function += virSexprError
msg_gen_function += virStorageReportError
msg_gen_function += virXMLError
msg_gen_function += virXenInotifyError
msg_gen_function += virXenStoreError
msg_gen_function += virXendError
msg_gen_function += vmwareError
msg_gen_function += xenapiSessionErrorHandler
msg_gen_function += xenUnifiedError
msg_gen_function += xenXMError
msg_gen_function += VIR_ERROR
msg_gen_function += VIR_ERROR0

# Uncomment the following and run "make syntax-check" to see diagnostics
# that are not yet marked for translation, but that need to be rewritten
# so that they are translatable.
# msg_gen_function += fprintf
# msg_gen_function += testError
# msg_gen_function += virXenError
# msg_gen_function += vshPrint
# msg_gen_function += vshError

func_or := $(shell printf '$(msg_gen_function)'|tr -s '[[:space:]]' '|')
func_re := ($(func_or))

# Look for diagnostics that aren't marked for translation.
# This won't find any for which error's format string is on a separate line.
# The sed filters eliminate false-positives like these:
#    _("...: "
#    "%s", _("no storage vol w..."
sc_libvirt_unmarked_diagnostics:
	@grep -nE							\
	    '\<$(func_re) *\([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))	\
	  | grep -v '_''(' &&						\
	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
	    exit 1; } || :
	@{ grep     -nE '\<$(func_re) *\(.*;$$' $$($(VC_LIST_EXCEPT));   \
	   grep -A1 -nE '\<$(func_re) *\(.*,$$' $$($(VC_LIST_EXCEPT)); } \
	   | sed 's/_("[^"][^"]*"//;s/[	 ]"%s"//'			\
	   | grep '[	 ]"' &&						\
	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
	    exit 1; } || :

# Like the above, but prohibit a newline at the end of a diagnostic.
# This is subject to false positives partly because it naively looks for
# `\n"', which may not be the end of the string, and also because it takes
# two lines of context (the -A2) after the line with the function name.
# FIXME: this rule might benefit from a separate function list, in case
# there are functions to which this one applies but that do not get marked
# diagnostics.
sc_prohibit_newline_at_end_of_diagnostic:
	@grep -A2 -nE							\
	    '\<$(func_re) *\(' $$($(VC_LIST_EXCEPT))			\
	    | grep '\\n"'						\
	  && { echo '$(ME): newline at end of message(s)' 1>&2;		\
	    exit 1; } || :

# Regex for grep -E that exempts generated files from style rules.
preprocessor_exempt = ((qemu|remote)_(driver|protocol)\.h)$$
# Enforce recommended preprocessor indentation style.
sc_preprocessor_indentation:
	@if cppi --version >/dev/null 2>&1; then			\
	  $(VC_LIST_EXCEPT) | grep '\.[ch]$$'				\
	    | grep -vE '$(preprocessor_exempt)' | xargs cppi -a -c	\
	    || { echo '$(ME): incorrect preprocessor indentation' 1>&2;	\
		exit 1; };						\
	else								\
	  echo '$(ME): skipping test $@: cppi not installed' 1>&2;	\
	fi

sc_copyright_format:
	@require='Copyright .*Red 'Hat', Inc\.'				\
	containing='Copyright .*Red 'Hat				\
	halt='Red Hat copyright is missing Inc.'			\
	  $(_sc_search_regexp)
	@prohibit='Copyright [^(].*Red 'Hat				\
	halt='consistently use (C) in Red Hat copyright'		\
	  $(_sc_search_regexp)

# Some functions/macros produce messages intended solely for developers
# and maintainers.  Do not mark them for translation.
sc_prohibit_gettext_markup:
	@prohibit='\<VIR_(WARN|DEBUG)0? *\(_\('				\
	halt='do not mark these strings for translation'		\
	  $(_sc_search_regexp)

# Ensure that the syntax_check_exceptions file list in Makefile.am
# stays in sync with corresponding files in the repository.
sce = syntax_check_exceptions
sc_x_sc_dist_check:
	@test "$$( ($(VC_LIST) | sed -n '/\.x-sc_/p'			\
		     | sed 's|^$(_dot_escaped_srcdir)/||';		\
		   sed -n '/^$(sce) =[	 ]*\\$$/,/[^\]$$/p'		\
		     $(srcdir)/Makefile.am				\
		       | sed 's/^  *//;/^$(sce) =/d'			\
		       | tr -s '\012\\' '  ' | fmt -1			\
		   ) | sort | uniq -u)"					\
	  && { echo 'Makefile.am: $(sce) mismatch' >&2; exit 1; } || :;

# We don't use this feature of maint.mk.
prev_version_file = /dev/null

ifeq (0,$(MAKELEVEL))
  _curr_status = .git-module-status
  # The sed filter accommodates those who check out on a commit from which
  # no tag is reachable.  In that case, git submodule status prints a "-"
  # in column 1 and does not print a "git describe"-style string after the
  # submodule name.  Contrast these:
  # -b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib
  #  b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib (v0.0-2286-gb653eda)
  # $ cat .git-module-status
  # b653eda3ac4864de205419d9f41eec267cb89eeb
  _submodule_hash = sed 's/^[ +-]//;s/ .*//'
  _update_required := $(shell						\
      cd '$(srcdir)';							\
      test -d .git || { echo 0; exit; };				\
      test -f po/Makevars || { echo 1; exit; };				\
      actual=$$(git submodule status | $(_submodule_hash);		\
		git hash-object bootstrap.conf;				\
		git diff .gnulib);					\
      stamp="$$($(_submodule_hash) $(_curr_status) 2>/dev/null)";	\
      test "$$stamp" = "$$actual"; echo $$?)
  _clean_requested = $(filter %clean,$(MAKECMDGOALS))
  ifeq (1,$(_update_required)$(_clean_requested))
    $(info INFO: gnulib update required; running ./autogen.sh first)
Makefile: _autogen
  endif
endif

# Give credit where due:
# Ensure that each commit author email address (possibly mapped via
# git log's .mailmap) appears in our AUTHORS file.
sc_check_author_list:
	@fail=0;							\
	for i in $$(git log --pretty=format:%aE%n|sort -u|grep -v '^$$'); do \
	  sanitized=$$(echo "$$i"|LC_ALL=C sed 's/\([^a-zA-Z0-9_@-]\)/\\\1/g'); \
	  grep -iq "<$$sanitized>" $(srcdir)/AUTHORS			\
	    || { printf '%s\n' "$$i" >&2; fail=1; };			\
	done;								\
	test $$fail = 1							\
	  && echo '$(ME): committer(s) not listed in AUTHORS' >&2;	\
	test $$fail = 0

# It is necessary to call autogen any time gnulib changes.  Autogen
# reruns configure, then we regenerate all Makefiles at once.
.PHONY: _autogen
_autogen:
	$(srcdir)/autogen.sh
	./config.status

# Exempt @...@ uses of these symbols.
_makefile_at_at_check_exceptions = ' && !/(SCHEMA|SYSCONF)DIR/'

# regenerate HACKING as part of the syntax-check
syntax-check: $(top_srcdir)/HACKING