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asterisk/main/Makefile
Matthew Jordan f5bc032567 Add support for the clang compiler; update RAII_VAR to use BlocksRuntime 
RAII_VAR, which is used extensively in Asterisk to manage reference counted
resources, uses a GCC extension to automatically invoke a cleanup function
when a variable loses scope. While this functionality is incredibly useful
and has prevented a large number of memory leaks, it also prevents Asterisk
from being compiled with clang.

This patch updates the RAII_VAR macro such that it can be compiled with clang.
It makes use of the BlocksRuntime, which allows for a closure to be created
that performs the actual cleanup.

Note that this does not attempt to address the numerous warnings that the clang
compiler catches in Asterisk.

Much thanks for this patch goes to:
* The folks on StackOverflow who asked this question and Leushenko for
  providing the answer that formed the basis of this code:
  http://stackoverflow.com/questions/24959440/rewrite-gcc-cleanup-macro-with-nested-function-for-clang
* Diederik de Groot, who has been extremely patient in working on getting this
  patch into Asterisk.

Review: https://reviewboard.asterisk.org/r/4370/

ASTERISK-24133
ASTERISK-23666
ASTERISK-20399
ASTERISK-20850 #close
Reported by: Diederik de Groot
patches:
  RAII_CLANG.patch uploaded by Diederik de Groot (License 6600)
........

Merged revisions 432807 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@432808 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2015-03-12 12:39:26 +00:00

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Makefile
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#
# Asterisk -- An open source telephony toolkit.
#
# Makefile to build main Asterisk binary
#
# Copyright (C) 1999-2006, Digium, Inc.
#
# Mark Spencer <markster@digium.com>
#
# This program is free software, distributed under the terms of
# the GNU General Public License
#
-include $(ASTTOPDIR)/menuselect.makeopts $(ASTTOPDIR)/menuselect.makedeps $(ASTTOPDIR)/makeopts.embed_rules $(ASTTOPDIR)/makeopts
all: asterisk
include $(ASTTOPDIR)/Makefile.moddir_rules
# Must include the extra ast_expr2.c, ast_expr2f.c, in case they need to be regenerated (because to force regeneration, we delete them)
SRC:=$(wildcard *.c) ast_expr2.c ast_expr2f.c
ifeq ($(AST_ASTERISKSSL),yes)
SRC:=$(filter-out libasteriskssl.c,$(SRC))
endif
OBJSFILTER=fskmodem_int.o fskmodem_float.o cygload.o buildinfo.o
OBJS=$(filter-out $(OBJSFILTER),$(SRC:.c=.o))
# we need to link in the objects statically, not as a library, because
# otherwise modules will not have them available if none of the static
# objects use it.
OBJS+=stdtime/localtime.o
ASTSSL_LIBS:=$(OPENSSL_LIB)
AST_LIBS+=$(BKTR_LIB)
AST_LIBS+=$(LIBXML2_LIB)
AST_LIBS+=$(LIBXSLT_LIB)
AST_LIBS+=$(SQLITE3_LIB)
AST_LIBS+=$(ASTSSL_LIBS)
AST_LIBS+=$(JANSSON_LIB)
AST_LIBS+=$(URIPARSER_LIB)
AST_LIBS+=$(UUID_LIB)
AST_LIBS+=$(CRYPT_LIB)
AST_LIBS+=$(AST_CLANG_BLOCKS_LIBS)
ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc kfreebsd-gnu),)
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
AST_LIBS+=-ldl
endif
ifneq (x$(CAP_LIB),x)
AST_LIBS+=$(CAP_LIB)
endif
AST_LIBS+=-lpthread $(EDITLINE_LIB) -lm -lresolv
else
AST_LIBS+=$(EDITLINE_LIB) -lm
endif
ifneq ($(findstring BETTER_BACKTRACES,$(MENUSELECT_CFLAGS)),)
AST_LIBS+=$(BFD_LIB)
endif
ifneq ($(findstring darwin,$(OSARCH)),)
AST_LIBS+=-lresolv
ASTLINK=-mmacosx-version-min=10.6 -Xlinker -undefined -Xlinker dynamic_lookup -force_flat_namespace
ASTLINK+=/usr/lib/bundle1.o
else
# These are used for all but Darwin
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
ASTLINK+=-Wl,--export-dynamic
else
ASTLINK+=${GC_LDFLAGS}
endif
ifneq ($(findstring BSD,$(OSARCH)),)
LDFLAGS+=-L/usr/local/lib
endif
endif
ifeq ($(OSARCH),FreeBSD)
# -V is understood by BSD Make, not by GNU make.
BSDVERSION=$(shell make -V OSVERSION -f /usr/share/mk/bsd.port.subdir.mk)
AST_LIBS+=$(shell if test $(BSDVERSION) -lt 502102 ; then echo "-lc_r"; else echo "-pthread"; fi)
AST_LIBS+=-lcrypto
endif
ifneq ($(findstring $(OSARCH), mingw32 cygwin ),)
AST_LIBS+=-lminires -ldl
ASTLINK+=-shared -Wl,--out-implib,libasterisk.a
endif
ifeq ($(OSARCH),NetBSD)
AST_LIBS+=-lpthread -lcrypto -lm -L/usr/pkg/lib $(EDITLINE_LIB)
endif
ifeq ($(OSARCH),OpenBSD)
AST_LIBS+=-lcrypto -lpthread -lm $(EDITLINE_LIB)
endif
ifeq ($(OSARCH),SunOS)
AST_LIBS+=-lpthread -ldl -lrt -lnsl -lsocket -lresolv
ASTSSL_LIBS+=-L/opt/ssl/lib -L/usr/local/ssl/lib
ASTLINK=
endif
ifneq ($(findstring USE_HOARD_ALLOCATOR,$(MENUSELECT_CFLAGS)),)
ifneq ($(HOARD_LIB),)
AST_LIBS+=$(HOARD_LIB)
endif
endif
ifeq ($(GNU_LD),1)
ASTLINK+=-Wl,--version-script,asterisk.exports
ifeq ($(HAVE_DYNAMIC_LIST),1)
ASTLINK+=-Wl,--dynamic-list,asterisk.dynamics
endif
endif
.PHONY: CHECK_SUBDIR
CHECK_SUBDIR: # do nothing, just make sure that we recurse in the subdir/
editline/libedit.a: CHECK_SUBDIR
cd editline && test -f config.h || CFLAGS="$(PTHREAD_CFLAGS) $(subst $(ASTTOPDIR),../../,$(_ASTCFLAGS:-Werror=) $(ASTCFLAGS))" LDFLAGS="$(_ASTLDFLAGS) $(ASTLDFLAGS)" ./configure --build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM) --with-ncurses=$(NCURSES_DIR) --with-curses=$(CURSES_DIR) --with-termcap=$(TERMCAP_DIR) --with-tinfo=$(TINFO_DIR)
$(MAKE) -C editline libedit.a
ifneq ($(findstring REBUILD_PARSERS,$(MENUSELECT_CFLAGS)),)
ast_expr2.c ast_expr2.h: ast_expr2.y
else
ast_expr2.c ast_expr2.h:
endif
$(ECHO_PREFIX) echo " [BISON] $< -> $@"
$(CMD_PREFIX) $(BISON) -o $@ -d --name-prefix=ast_yy ast_expr2.y
ifneq ($(findstring REBUILD_PARSERS,$(MENUSELECT_CFLAGS)),)
ast_expr2f.c: ast_expr2.fl
else
ast_expr2f.c:
endif
$(ECHO_PREFIX) echo " [FLEX] $< -> $@"
$(CMD_PREFIX) $(FLEX) -o $@ ast_expr2.fl
$(CMD_PREFIX) sed 's@#if __STDC_VERSION__ >= 199901L@#if !defined __STDC_VERSION__ || __STDC_VERSION__ >= 199901L@' $@ > $@.fix
$(CMD_PREFIX) echo "#include \"asterisk.h\"" > $@
$(CMD_PREFIX) echo >> $@
$(CMD_PREFIX) cat $@.fix >> $@
$(CMD_PREFIX) rm $@.fix
ast_expr2f.o: _ASTCFLAGS+=-Wno-unused
testexpr2: ast_expr2f.c ast_expr2.c ast_expr2.h
$(CC) -g -c -Iinclude -DSTANDALONE ast_expr2f.c
$(CC) -g -c -Iinclude -DSTANDALONE ast_expr2.c
$(CC) -g -o testexpr2 ast_expr2f.o ast_expr2.o -lm
rm ast_expr2.o ast_expr2f.o
ifneq ($(LIBEDIT_INTERNAL),no)
LIBEDIT_OBJ=editline/libedit.a
LIBEDIT_INCLUDE=-I. -Ieditline
endif
db.o: _ASTCFLAGS+=$(SQLITE3_INCLUDE)
asterisk.o: _ASTCFLAGS+=$(LIBEDIT_INCLUDE)
cli.o: _ASTCFLAGS+=$(LIBEDIT_INCLUDE)
json.o: _ASTCFLAGS+=$(JANSSON_INCLUDE)
bucket.o: _ASTCFLAGS+=$(URIPARSER_INCLUDE)
crypt.o: _ASTCFLAGS+=$(CRYPT_INCLUDE)
uuid.o: _ASTCFLAGS+=$(UUID_INCLUDE)
ifneq ($(findstring ENABLE_UPLOADS,$(MENUSELECT_CFLAGS)),)
http.o: _ASTCFLAGS+=$(GMIME_INCLUDE)
endif
stdtime/localtime.o: _ASTCFLAGS+=$(AST_NO_STRICT_OVERFLOW) -Wno-format-nonliteral
AST_EMBED_LDSCRIPTS:=$(sort $(EMBED_LDSCRIPTS))
AST_EMBED_LDFLAGS:=$(foreach dep,$(EMBED_LDFLAGS),$(value $(dep)))
AST_EMBED_LIBS:=$(foreach dep,$(EMBED_LIBS),$(value $(dep)))
OBJS:=$(sort $(OBJS))
ifneq ($(findstring $(OSARCH), mingw32 cygwin ),)
MAIN_TGT:=asterisk.dll
asterisk: cygload
mv cygload.exe asterisk.exe
cygload: asterisk.dll
else
MAIN_TGT:=asterisk
endif
ifneq ($(findstring ENABLE_UPLOADS,$(MENUSELECT_CFLAGS)),)
GMIMELDFLAGS+=$(GMIME_LIB)
endif
$(OBJS): _ASTCFLAGS+=-DAST_MODULE=\"core\"
libasteriskssl.o: _ASTCFLAGS+=$(OPENSSL_INCLUDE)
ifeq ($(AST_ASTERISKSSL),yes)
# The ABI *version* of the asteriskssl library; don't change this unless there truly is a
# non-backwards-compatible ABI change in the library
ASTSSL_SO_VERSION=1
ASTSSL_LDLIBS=-L. -lasteriskssl
ifeq ($(findstring darwin,$(OSARCH)),) # not Darwin
ASTSSL_LIB:=libasteriskssl.so
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): _ASTLDFLAGS+=-Wl,-soname=$(ASTSSL_LIB).$(ASTSSL_SO_VERSION)
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskssl\"
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): LIBS+=$(ASTSSL_LIBS)
ifeq ($(GNU_LD),1)
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): SO_SUPPRESS_SYMBOLS=-Wl,--version-script,libasteriskssl.exports,--warn-common
endif
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): SOLINK=$(DYLINK)
# These rules are duplicated from $(ASTTOPDIR)/Makefile.rules because the library name
# being built does not match the "%.so" pattern; there are also additional steps
# required to build a proper shared library (as opposed to the 'loadable module'
# type that are built by the standard rules)
$(ASTSSL_LIB).$(ASTSSL_SO_VERSION): libasteriskssl.o
ifeq ($(GNU_LD),1)
$(CMD_PREFIX) $(ASTTOPDIR)/build_tools/make_linker_version_script libasteriskssl "$(LINKER_SYMBOL_PREFIX)" "$(ASTTOPDIR)"
endif
$(ECHO_PREFIX) echo " [LD] $^ -> $@"
$(CMD_PREFIX) $(CC) $(STATIC_BUILD) -o $@ $(CC_LDFLAGS_SO) $^ $(CC_LIBS)
ifneq ($(LDCONFIG),)
$(LDCONFIG) $(LDCONFIG_FLAGS) .
endif
$(ASTSSL_LIB): $(ASTSSL_LIB).$(ASTSSL_SO_VERSION)
$(LN) -sf $< $@
else # Darwin
ASTSSL_LIB:=libasteriskssl.dylib
# -install_name allows library to be found if installed somewhere other than
# /lib or /usr/lib
$(ASTSSL_LIB): _ASTLDFLAGS+=-dynamiclib -install_name $(ASTLIBDIR)/$(ASTSSL_LIB)
$(ASTSSL_LIB): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskssl\"
$(ASTSSL_LIB): LIBS+=$(ASTSSL_LIBS)
$(ASTSSL_LIB): SOLINK=$(DYLINK)
# Special rules for building a shared library (not a dynamically loadable module)
$(ASTSSL_LIB): libasteriskssl.o
$(ECHO_PREFIX) echo " [LD] $^ -> $@"
$(CMD_PREFIX) $(CC) $(STATIC_BUILD) -o $@ $(CC_LDFLAGS_SO) $^ $(CC_LIBS)
endif
endif
tcptls.o: _ASTCFLAGS+=$(OPENSSL_INCLUDE)
$(MAIN_TGT): $(OBJS) $(ASTSSL_LIB) $(LIBEDIT_OBJ) $(AST_EMBED_LDSCRIPTS)
@$(CC) -c -o buildinfo.o $(_ASTCFLAGS) buildinfo.c $(ASTCFLAGS)
$(ECHO_PREFIX) echo " [LD] $(OBJS) $(LIBEDIT_OBJ) $(AST_EMBED_LDSCRIPTS) -> $@"
$(CMD_PREFIX) $(CXX) $(STATIC_BUILD) -o $@ $(ASTLINK) $(AST_EMBED_LDFLAGS) $(_ASTLDFLAGS) $(ASTLDFLAGS) $(OBJS) $(ASTSSL_LDLIBS) $(LIBEDIT_OBJ) $(AST_EMBED_LDSCRIPTS) buildinfo.o $(AST_LIBS) $(AST_EMBED_LIBS) $(GMIMELDFLAGS) $(LIBEDIT_LIB)
ifeq ($(GNU_LD),1)
$(MAIN_TGT): asterisk.exports
asterisk.exports: asterisk.exports.in
$(CMD_PREFIX) $(ASTTOPDIR)/build_tools/make_linker_version_script asterisk $(LINKER_SYMBOL_PREFIX)
endif
bininstall:
$(INSTALL) -m 755 $(MAIN_TGT) "$(DESTDIR)$(ASTSBINDIR)/"
ifeq ($(AST_ASTERISKSSL),yes)
ifeq ($(findstring darwin,$(OSARCH)),) # not Darwin
$(INSTALL) -m 755 $(ASTSSL_LIB).$(ASTSSL_SO_VERSION) "$(DESTDIR)$(ASTLIBDIR)/"
$(LN) -sf $(ASTSSL_LIB).$(ASTSSL_SO_VERSION) "$(DESTDIR)$(ASTLIBDIR)/$(ASTSSL_LIB)"
else # Darwin
$(INSTALL) -m 755 $(ASTSSL_LIB) "$(DESTDIR)$(ASTLIBDIR)/"
endif
ifneq ($(LDCONFIG),)
$(LDCONFIG) $(LDCONFIG_FLAGS) "$(DESTDIR)$(ASTLIBDIR)/"
endif
endif
$(LN) -sf asterisk "$(DESTDIR)$(ASTSBINDIR)/rasterisk"
binuninstall:
rm -f "$(DESTDIR)$(ASTSBINDIR)/$(MAIN_TGT)"
rm -f "$(DESTDIR)$(ASTSBINDIR)/rasterisk"
rm -f "$(DESTDIR)$(ASTLIBDIR)/$(ASTSSL_LIB).$(ASTSSL_SO_VERSION)"
ifneq ($(LDCONFIG),)
$(LDCONFIG) $(LDCONFIG_FLAGS) "$(DESTDIR)$(ASTLIBDIR)/"
endif
clean::
rm -f asterisk libasteriskssl.o
ifeq ($(AST_ASTERISKSSL),yes)
rm -f $(ASTSSL_LIB) $(ASTSSL_LIB).*
endif
rm -f asterisk.exports libasteriskssl.exports
@if [ -f editline/Makefile ]; then $(MAKE) -C editline distclean ; fi
@$(MAKE) -C stdtime clean
rm -f libresample/src/*.o
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