contrib/src/main.mak

   1 # Main makefile for VLC 3rd party libraries ("contrib")
   2 # Copyright (C) 2003-2011 the VideoLAN team
   3 #
   4 # This file is under the same license as the vlc package.
   5
   6 all: install
   7
   8 # bootstrap configuration
   9 include config.mak
  10
  11 TOPSRC ?= ../../contrib
  12 TOPDST ?= ..
  13 SRC := $(TOPSRC)/src
  14 TARBALLS := $(TOPSRC)/tarballs
  15
  16 PATH :=$(abspath ../../extras/tools/build/bin):$(PATH)
  17 export PATH
  18
  19 PKGS_ALL := $(patsubst $(SRC)/%/rules.mak,%,$(wildcard $(SRC)/*/rules.mak))
  20 DATE := $(shell date +%Y%m%d)
  21 VPATH := $(TARBALLS)
  22
  23 # Common download locations
  24 GNU ?= http://ftp.gnu.org/gnu
  25 SF := https://netcologne.dl.sourceforge.net/
  26 VIDEOLAN := http://downloads.videolan.org/pub/videolan
  27 CONTRIB_VIDEOLAN := http://downloads.videolan.org/pub/contrib
  28 GITHUB := https://github.com/
  29
  30 #
  31 # Machine-dependent variables
  32 #
  33
  34 PREFIX ?= $(TOPDST)/$(HOST)
  35 PREFIX := $(abspath $(PREFIX))
  36 BUILDPREFIX ?= $(TOPDST)
  37 BUILDPREFIX := $(abspath $(BUILDPREFIX))
  38 BUILDBINDIR ?= $(BUILDPREFIX)/bin
  39 ifneq ($(HOST),$(BUILD))
  40 HAVE_CROSS_COMPILE = 1
  41 endif
  42 ARCH := $(shell $(SRC)/get-arch.sh $(HOST))
  43
  44 ifeq ($(ARCH)-$(HAVE_WIN32),x86_64-1)
  45 HAVE_WIN64 := 1
  46 endif
  47
  48 ifdef HAVE_CROSS_COMPILE
  49 need_pkg = 1
  50 else
  51 need_pkg = $(shell $(PKG_CONFIG) $(1) || echo 1)
  52 endif
  53
  54 #
  55 # Default values for tools
  56 #
  57 ifndef HAVE_CROSS_COMPILE
  58 ifneq ($(findstring $(origin CC),undefined default),)
  59 CC := gcc
  60 endif
  61 ifneq ($(findstring $(origin CXX),undefined default),)
  62 CXX := g++
  63 endif
  64 ifneq ($(findstring $(origin LD),undefined default),)
  65 LD := ld
  66 endif
  67 ifneq ($(findstring $(origin AR),undefined default),)
  68 AR := ar
  69 endif
  70 ifneq ($(findstring $(origin RANLIB),undefined default),)
  71 RANLIB := ranlib
  72 endif
  73 ifneq ($(findstring $(origin STRIP),undefined default),)
  74 STRIP := strip
  75 endif
  76 ifneq ($(findstring $(origin WIDL),undefined default),)
  77 WIDL := widl
  78 endif
  79 else
  80 ifneq ($(findstring $(origin CC),undefined default),)
  81 CC := $(HOST)-gcc
  82 endif
  83 ifneq ($(findstring $(origin CXX),undefined default),)
  84 CXX := $(HOST)-g++
  85 endif
  86 ifneq ($(findstring $(origin LD),undefined default),)
  87 LD := $(HOST)-ld
  88 endif
  89 ifneq ($(findstring $(origin AR),undefined default),)
  90 AR := $(HOST)-ar
  91 endif
  92 ifneq ($(findstring $(origin RANLIB),undefined default),)
  93 RANLIB := $(HOST)-ranlib
  94 endif
  95 ifneq ($(findstring $(origin STRIP),undefined default),)
  96 STRIP := $(HOST)-strip
  97 endif
  98 ifneq ($(findstring $(origin WIDL),undefined default),)
  99 WIDL := $(HOST)-widl
 100 endif
 101 endif
 102
 103 ifdef HAVE_ANDROID
 104 ifneq ($(findstring $(origin CC),undefined default),)
 105 CC :=  clang
 106 endif
 107 ifneq ($(findstring $(origin CXX),undefined default),)
 108 CXX := clang++
 109 endif
 110 endif
 111
 112 ifdef HAVE_MACOSX
 113 MIN_OSX_VERSION=10.7
 114 EXTRA_CFLAGS += -isysroot $(MACOSX_SDK) -mmacosx-version-min=$(MIN_OSX_VERSION) -DMACOSX_DEPLOYMENT_TARGET=$(MIN_OSX_VERSION)
 115 EXTRA_CXXFLAGS += -stdlib=libc++
 116 EXTRA_LDFLAGS += -Wl,-syslibroot,$(MACOSX_SDK) -mmacosx-version-min=$(MIN_OSX_VERSION) -isysroot $(MACOSX_SDK) -DMACOSX_DEPLOYMENT_TARGET=$(MIN_OSX_VERSION)
 117 ifeq ($(ARCH),x86_64)
 118 EXTRA_CFLAGS += -m64
 119 EXTRA_LDFLAGS += -m64
 120 else
 121 EXTRA_CFLAGS += -m32
 122 EXTRA_LDFLAGS += -m32
 123 endif
 124
 125 XCODE_FLAGS = MACOSX_DEPLOYMENT_TARGET=$(MIN_OSX_VERSION) -sdk macosx$(OSX_VERSION) -arch $(ARCH)
 126
 127 endif
 128
 129 CCAS=$(CC) -c
 130
 131 ifdef HAVE_IOS
 132 CC=xcrun clang
 133 CXX=xcrun clang++
 134 ifdef HAVE_NEON
 135 AS=perl $(abspath ../../extras/tools/build/bin/gas-preprocessor.pl) $(CC)
 136 CCAS=gas-preprocessor.pl $(CC) -c
 137 else
 138 CCAS=$(CC) -c
 139 endif
 140 AR=xcrun ar
 141 LD=xcrun ld
 142 STRIP=xcrun strip
 143 RANLIB=xcrun ranlib
 144 EXTRA_CFLAGS += $(CFLAGS)
 145 EXTRA_LDFLAGS += $(LDFLAGS)
 146 endif
 147
 148 ifdef HAVE_WIN32
 149 ifneq ($(shell $(CC) $(CFLAGS) -E -dM -include _mingw.h - < /dev/null | grep -E __MINGW64_VERSION_MAJOR),)
 150 HAVE_MINGW_W64 := 1
 151 endif
 152 endif
 153
 154 ifdef HAVE_SOLARIS
 155 ifeq ($(ARCH),x86_64)
 156 EXTRA_CFLAGS += -m64
 157 EXTRA_LDFLAGS += -m64
 158 else
 159 EXTRA_CFLAGS += -m32
 160 EXTRA_LDFLAGS += -m32
 161 endif
 162 endif
 163
 164 cppcheck = $(shell $(CC) $(CFLAGS) -E -dM - < /dev/null | grep -E $(1))
 165
 166 EXTRA_CFLAGS += -I$(PREFIX)/include
 167 CPPFLAGS := $(CPPFLAGS) $(EXTRA_CFLAGS)
 168 CFLAGS := $(CFLAGS) $(EXTRA_CFLAGS) -g
 169 CXXFLAGS := $(CXXFLAGS) $(EXTRA_CFLAGS) $(EXTRA_CXXFLAGS) -g
 170 EXTRA_LDFLAGS += -L$(PREFIX)/lib
 171 LDFLAGS := $(LDFLAGS) $(EXTRA_LDFLAGS)
 172
 173 ifndef WITH_OPTIMIZATION
 174 CFLAGS := $(CFLAGS) -O0
 175 CXXFLAGS := $(CXXFLAGS) -O0
 176 else
 177 CFLAGS := $(CFLAGS) -O2
 178 CXXFLAGS := $(CXXFLAGS) -O2
 179 endif
 180
 181 # Do not export those! Use HOSTVARS.
 182
 183 # Do the FPU detection, after we have figured out our compilers and flags.
 184 ifneq ($(findstring $(ARCH),aarch64 i386 ppc ppc64 sparc sparc64 x86_64),)
 185 # This should be consistent with include/vlc_cpu.h
 186 HAVE_FPU = 1
 187 else ifneq ($(findstring $(ARCH),arm),)
 188 ifneq ($(call cppcheck, __VFP_FP__)),)
 189 ifeq ($(call cppcheck, __SOFTFP__),)
 190 HAVE_FPU = 1
 191 endif
 192 endif
 193 else ifneq ($(call cppcheck, __mips_hard_float),)
 194 HAVE_FPU = 1
 195 endif
 196
 197 ACLOCAL_AMFLAGS += -I$(PREFIX)/share/aclocal
 198 export ACLOCAL_AMFLAGS
 199
 200 #########
 201 # Tools #
 202 #########
 203
 204 PKG_CONFIG ?= pkg-config
 205 ifdef HAVE_CROSS_COMPILE
 206 # This inhibits .pc file from within the cross-compilation toolchain sysroot.
 207 # Hopefully, nobody ever needs that.
 208 PKG_CONFIG_PATH := /usr/share/pkgconfig
 209 PKG_CONFIG_LIBDIR := /usr/$(HOST)/lib/pkgconfig
 210 export PKG_CONFIG_LIBDIR
 211 endif
 212 PKG_CONFIG_PATH := $(PREFIX)/lib/pkgconfig:$(PKG_CONFIG_PATH)
 213 export PKG_CONFIG_PATH
 214
 215 ifndef GIT
 216 ifeq ($(shell git --version >/dev/null 2>&1 || echo FAIL),)
 217 GIT = git
 218 endif
 219 endif
 220 GIT ?= $(error git not found!)
 221
 222 ifndef SVN
 223 ifeq ($(shell svn --version >/dev/null 2>&1 || echo FAIL),)
 224 SVN = svn
 225 endif
 226 endif
 227 SVN ?= $(error subversion client (svn) not found!)
 228
 229 ifeq ($(shell curl --version >/dev/null 2>&1 || echo FAIL),)
 230 download = curl -f -L -- "$(1)" > "$@"
 231 else ifeq ($(shell wget --version >/dev/null 2>&1 || echo FAIL),)
 232 download = (rm -f $@.tmp && \
 233         wget --passive -c -p -O $@.tmp "$(1)" && \
 234         touch $@.tmp && \
 235         mv $@.tmp $@ )
 236 else ifeq ($(which fetch >/dev/null 2>&1 || echo FAIL),)
 237 download = (rm -f $@.tmp && \
 238         fetch -p -o $@.tmp "$(1)" && \
 239         touch $@.tmp && \
 240         mv $@.tmp $@)
 241 else
 242 download = $(error Neither curl nor wget found!)
 243 endif
 244
 245 download_pkg = $(call download,$(CONTRIB_VIDEOLAN)/$(2)/$(lastword $(subst /, ,$(@)))) || \
 246         ( $(call download,$(1)) && echo "Please upload this package $(lastword $(subst /, ,$(@))) to our FTP" )
 247
 248 ifeq ($(shell which xz >/dev/null 2>&1 || echo FAIL),)
 249 XZ = xz
 250 else
 251 XZ ?= $(error XZ (LZMA) compressor not found!)
 252 endif
 253
 254 ifeq ($(shell sha512sum --version >/dev/null 2>&1 || echo FAIL),)
 255 SHA512SUM = sha512sum --check
 256 else ifeq ($(shell shasum --version >/dev/null 2>&1 || echo FAIL),)
 257 SHA512SUM = shasum -a 512 --check
 258 else ifeq ($(shell openssl version >/dev/null 2>&1 || echo FAIL),)
 259 SHA512SUM = openssl dgst -sha512
 260 else
 261 SHA512SUM = $(error SHA-512 checksumming not found!)
 262 endif
 263
 264 ifeq ($(shell protoc --version >/dev/null 2>&1 || echo FAIL),)
 265 PROTOC = protoc
 266 else
 267 PROTOC ?= $(error Protobuf compiler (protoc) not found!)
 268 endif
 269
 270 #
 271 # Common helpers
 272 #
 273 HOSTCONF := --prefix="$(PREFIX)"
 274 HOSTCONF += --datarootdir="$(PREFIX)/share"
 275 HOSTCONF += --includedir="$(PREFIX)/include"
 276 HOSTCONF += --libdir="$(PREFIX)/lib"
 277 HOSTCONF += --build="$(BUILD)" --host="$(HOST)" --target="$(HOST)"
 278 HOSTCONF += --program-prefix=""
 279 # libtool stuff:
 280 HOSTCONF += --enable-static --disable-shared --disable-dependency-tracking
 281 ifdef HAVE_WIN32
 282 HOSTCONF += --without-pic
 283 PIC :=
 284 else
 285 HOSTCONF += --with-pic
 286 PIC := -fPIC
 287 endif
 288
 289 HOSTTOOLS := \
 290         CC="$(CC)" CXX="$(CXX)" LD="$(LD)" \
 291         AR="$(AR)" CCAS="$(CCAS)" RANLIB="$(RANLIB)" STRIP="$(STRIP)" \
 292         PATH="$(PREFIX)/bin:$(PATH)"
 293 HOSTVARS := $(HOSTTOOLS) \
 294         CPPFLAGS="$(CPPFLAGS)" \
 295         CFLAGS="$(CFLAGS)" \
 296         CXXFLAGS="$(CXXFLAGS)" \
 297         LDFLAGS="$(LDFLAGS)"
 298 HOSTVARS_PIC := $(HOSTTOOLS) \
 299         CPPFLAGS="$(CPPFLAGS) $(PIC)" \
 300         CFLAGS="$(CFLAGS) $(PIC)" \
 301         CXXFLAGS="$(CXXFLAGS) $(PIC)" \
 302         LDFLAGS="$(LDFLAGS)"
 303
 304 download_git = \
 305         rm -Rf -- "$(@:.tar.xz=)" && \
 306         $(GIT) init --bare "$(@:.tar.xz=)" && \
 307         (cd "$(@:.tar.xz=)" && \
 308         $(GIT) remote add origin "$(1)" && \
 309         $(GIT) fetch origin "$(2)") && \
 310         (cd "$(@:.tar.xz=)" && \
 311         $(GIT) archive --prefix="$(notdir $(@:.tar.xz=))/" \
 312                 --format=tar "$(3)") > "$(@:.xz=)" && \
 313         echo "$(3) $(@)" > "$(@:.tar.xz=.githash)" && \
 314         rm -Rf -- "$(@:.tar.xz=)" && \
 315         $(XZ) --stdout "$(@:.xz=)" > "$@.tmp" && \
 316         rm -f "$(@:.xz=)" && \
 317         mv -f -- "$@.tmp" "$@"
 318 check_githash = \
 319         h=`sed -n -e "s,^\([0-9a-fA-F]\{40\}\) $<,\1,p" \
 320                 < "$(<:.tar.xz=.githash)"` && \
 321         test "$$h" = "$1"
 322
 323 checksum = \
 324         $(foreach f,$(filter $(TARBALLS)/%,$^), \
 325                 grep -- " $(f:$(TARBALLS)/%=%)$$" \
 326                         "$(SRC)/$(patsubst .sum-%,%,$@)/$(2)SUMS" &&) \
 327         (cd $(TARBALLS) && $(1) /dev/stdin) < \
 328                 "$(SRC)/$(patsubst .sum-%,%,$@)/$(2)SUMS"
 329 CHECK_SHA512 = $(call checksum,$(SHA512SUM),SHA512)
 330 UNPACK = $(RM) -R $@ \
 331         $(foreach f,$(filter %.tar.gz %.tgz,$^), && tar xvzf $(f)) \
 332         $(foreach f,$(filter %.tar.bz2,$^), && tar xvjf $(f)) \
 333         $(foreach f,$(filter %.tar.xz,$^), && tar xvJf $(f)) \
 334         $(foreach f,$(filter %.zip,$^), && unzip $(f))
 335 UNPACK_DIR = $(patsubst %.tar,%,$(basename $(notdir $<)))
 336 APPLY = (cd $(UNPACK_DIR) && patch -fp1) <
 337 pkg_static = (cd $(UNPACK_DIR) && ../../../contrib/src/pkg-static.sh $(1))
 338 MOVE = mv $(UNPACK_DIR) $@ && touch $@
 339
 340 AUTOMAKE_DATA_DIRS=$(foreach n,$(foreach n,$(subst :, ,$(shell echo $$PATH)),$(abspath $(n)/../share)),$(wildcard $(n)/automake*))
 341 UPDATE_AUTOCONFIG = for dir in $(AUTOMAKE_DATA_DIRS); do \
 342                 if test -f "$${dir}/config.sub" -a -f "$${dir}/config.guess"; then \
 343                         cp "$${dir}/config.sub" "$${dir}/config.guess" $(UNPACK_DIR); \
 344                         break; \
 345                 fi; \
 346         done
 347
 348 ifdef HAVE_IOS
 349 AUTORECONF = AUTOPOINT=true autoreconf
 350 else
 351 AUTORECONF = autoreconf
 352 endif
 353 RECONF = mkdir -p -- $(PREFIX)/share/aclocal && \
 354         cd $< && $(AUTORECONF) -fiv $(ACLOCAL_AMFLAGS)
 355 CMAKE = cmake . -DCMAKE_TOOLCHAIN_FILE=$(abspath toolchain.cmake) \
 356                 -DCMAKE_INSTALL_PREFIX=$(PREFIX) $(CMAKE_GENERATOR)
 357
 358 #
 359 # Per-package build rules
 360 #
 361 PKGS_FOUND :=
 362 include $(SRC)/*/rules.mak
 363
 364 ifeq ($(PKGS_DISABLE), all)
 365 PKGS :=
 366 endif
 367 #
 368 # Targets
 369 #
 370 ifneq ($(filter $(PKGS_DISABLE),$(PKGS_ENABLE)),)
 371 $(error Same package(s) disabled and enabled at the same time)
 372 endif
 373 # Apply automatic selection (= remove distro packages):
 374 PKGS_AUTOMATIC := $(filter-out $(PKGS_FOUND),$(PKGS))
 375 # Apply manual selection (from bootstrap):
 376 PKGS_MANUAL := $(sort $(PKGS_ENABLE) $(filter-out $(PKGS_DISABLE),$(PKGS_AUTOMATIC)))
 377 # Resolve dependencies:
 378 PKGS_DEPS := $(filter-out $(PKGS_FOUND) $(PKGS_MANUAL),$(sort $(foreach p,$(PKGS_MANUAL),$(DEPS_$(p)))))
 379 PKGS := $(sort $(PKGS_MANUAL) $(PKGS_DEPS))
 380
 381 fetch: $(PKGS:%=.sum-%)
 382 fetch-all: $(PKGS_ALL:%=.sum-%)
 383 install: $(PKGS:%=.%)
 384
 385 mostlyclean:
 386         -$(RM) $(foreach p,$(PKGS_ALL),.$(p) .sum-$(p) .dep-$(p))
 387         -$(RM) toolchain.cmake
 388         -$(RM) -R "$(PREFIX)"
 389         -$(RM) -R "$(BUILDBINDIR)"
 390         -$(RM) -R */
 391
 392 clean: mostlyclean
 393         -$(RM) $(TARBALLS)/*.*
 394
 395 distclean: clean
 396         $(RM) config.mak
 397         unlink Makefile
 398
 399 PREBUILT_URL=http://download.videolan.org/pub/videolan/contrib/$(HOST)/vlc-contrib-$(HOST)-latest.tar.bz2
 400
 401 vlc-contrib-$(HOST)-latest.tar.bz2:
 402         $(call download,$(PREBUILT_URL))
 403
 404 prebuilt: vlc-contrib-$(HOST)-latest.tar.bz2
 405         -$(UNPACK)
 406         $(RM) -r $(TOPDST)/$(HOST)
 407         mv $(HOST) $(TOPDST)
 408         cd $(TOPDST)/$(HOST) && $(SRC)/change_prefix.sh
 409 ifdef HAVE_WIN32
 410 ifndef HAVE_CROSS_COMPILE
 411         $(RM) `find $(TOPDST)/$(HOST)/bin | file -f- | grep ELF | awk -F: '{print $$1}' | xargs`
 412 endif
 413 endif
 414
 415 package: install
 416         rm -Rf tmp/
 417         mkdir -p tmp/
 418         cp -R $(PREFIX) tmp/
 419         # remove useless files
 420         cd tmp/$(notdir $(PREFIX)); \
 421                 cd share; rm -Rf man doc gtk-doc info lua projectM; cd ..; \
 422                 rm -Rf man sbin etc lib/lua lib/sidplay
 423         cd tmp/$(notdir $(PREFIX)) && $(abspath $(SRC))/change_prefix.sh $(PREFIX) @@CONTRIB_PREFIX@@
 424         (cd tmp && tar c $(notdir $(PREFIX))/) | bzip2 -c > ../vlc-contrib-$(HOST)-$(DATE).tar.bz2
 425
 426 list:
 427         @echo All packages:
 428         @echo '  $(PKGS_ALL)' | tr " " "\n" | sort | tr "\n" " " |fmt
 429         @echo Distribution-provided packages:
 430         @echo '  $(PKGS_FOUND)' | tr " " "\n" | sort | tr "\n" " " |fmt
 431         @echo Automatically selected packages:
 432         @echo '  $(PKGS_AUTOMATIC)' | tr " " "\n" | sort | tr "\n" " " |fmt
 433         @echo Manually deselected packages:
 434         @echo '  $(PKGS_DISABLE)' | tr " " "\n" | sort | tr "\n" " " |fmt
 435         @echo Manually selected packages:
 436         @echo '  $(PKGS_ENABLE)' | tr " " "\n" | sort | tr "\n" " " |fmt
 437         @echo Depended-on packages:
 438         @echo '  $(PKGS_DEPS)' | tr " " "\n" | sort | tr "\n" " " |fmt
 439         @echo To-be-built packages:
 440         @echo '  $(PKGS)' | tr " " "\n" | sort | tr "\n" " " |fmt
 441
 442 help:
 443         @cat $(SRC)/help.txt
 444
 445 .PHONY: all fetch fetch-all install mostlyclean clean distclean package list help prebuilt
 446
 447 # CMake toolchain
 448 toolchain.cmake:
 449         $(RM) $@
 450 ifdef HAVE_WIN32
 451 ifdef HAVE_WINDOWSPHONE
 452         echo "set(CMAKE_SYSTEM_NAME WindowsPhone)" >> $@
 453 else
 454 ifdef HAVE_WINSTORE
 455         echo "set(CMAKE_SYSTEM_NAME WindowsStore)" >> $@
 456 else
 457         echo "set(CMAKE_SYSTEM_NAME Windows)" >> $@
 458 endif
 459 endif
 460 ifndef WITH_OPTIMIZATION
 461         echo "set(CMAKE_BUILD_TYPE Debug)" >> $@
 462 else
 463         echo "set(CMAKE_BUILD_TYPE Release)" >> $@
 464 endif
 465 ifdef HAVE_CROSS_COMPILE
 466         echo "set(CMAKE_RC_COMPILER $(HOST)-windres)" >> $@
 467 endif
 468 endif
 469 ifdef HAVE_DARWIN_OS
 470         echo "set(CMAKE_SYSTEM_NAME Darwin)" >> $@
 471         echo "set(CMAKE_C_FLAGS $(CFLAGS) $(EXTRA_CFLAGS))" >> $@
 472         echo "set(CMAKE_CXX_FLAGS $(CFLAGS) $(EXTRA_CXXFLAGS))" >> $@
 473         echo "set(CMAKE_LD_FLAGS $(LDFLAGS))" >> $@
 474         echo "set(CMAKE_AR ar CACHE FILEPATH "Archiver")" >> $@
 475 ifdef HAVE_IOS
 476         echo "set(CMAKE_OSX_SYSROOT $(IOS_SDK))" >> $@
 477 else
 478         echo "set(CMAKE_OSX_SYSROOT $(MACOSX_SDK))" >> $@
 479 endif
 480 endif
 481 ifdef HAVE_CROSS_COMPILE
 482         echo "set(_CMAKE_TOOLCHAIN_PREFIX $(HOST)-)" >> $@
 483 ifdef HAVE_ANDROID
 484 # cmake will overwrite our --sysroot with a native (host) one on Darwin
 485 # Set it to "" right away to short-circuit this behaviour
 486         echo "set(CMAKE_CXX_SYSROOT_FLAG \"\")" >> $@
 487         echo "set(CMAKE_C_SYSROOT_FLAG \"\")" >> $@
 488 endif
 489 endif
 490         echo "set(CMAKE_C_COMPILER $(CC))" >> $@
 491         echo "set(CMAKE_CXX_COMPILER $(CXX))" >> $@
 492         echo "set(CMAKE_FIND_ROOT_PATH $(PREFIX))" >> $@
 493         echo "set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)" >> $@
 494         echo "set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)" >> $@
 495         echo "set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)" >> $@
 496
 497 # Default pattern rules
 498 .sum-%: $(SRC)/%/SHA512SUMS
 499         $(CHECK_SHA512)
 500         touch $@
 501
 502 .sum-%:
 503         $(error Download and check target not defined for $*)
 504
 505 # Dummy dependency on found packages
 506 $(patsubst %,.dep-%,$(PKGS_FOUND)): .dep-%:
 507         touch $@
 508
 509 # Real dependency on missing packages
 510 $(patsubst %,.dep-%,$(filter-out $(PKGS_FOUND),$(PKGS_ALL))): .dep-%: .%
 511         touch -r $< $@
 512
 513 .SECONDEXPANSION:
 514
 515 # Dependency propagation (convert 'DEPS_foo = bar' to '.foo: .bar')
 516 $(foreach p,$(PKGS_ALL),.$(p)): .%: $$(foreach d,$$(DEPS_$$*),.dep-$$(d))
 517
 518 .DELETE_ON_ERROR: