nsprpub/config/rules.mk

   1 #! gmake
   2 #
   3 # This Source Code Form is subject to the terms of the Mozilla Public
   4 # License, v. 2.0. If a copy of the MPL was not distributed with this
   5 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   6
   7 ################################################################################
   8 # We used to have a 4 pass build process.  Now we do everything in one pass.
   9 #
  10 # export - Create generated headers and stubs. Publish public headers to
  11 #          dist/<arch>/include.
  12 #          Create libraries. Publish libraries to dist/<arch>/lib.
  13 #          Create programs.
  14 #
  15 # libs - obsolete.  Now a synonym of "export".
  16 #
  17 # all - the default makefile target.  Now a synonym of "export".
  18 #
  19 # install - Install headers, libraries, and programs on the system.
  20 #
  21 # Parameters to this makefile (set these before including):
  22 #
  23 # a)
  24 #       TARGETS -- the target to create
  25 #                       (defaults to $LIBRARY $PROGRAM)
  26 # b)
  27 #       DIRS    -- subdirectories for make to recurse on
  28 #                       (the 'all' rule builds $TARGETS $DIRS)
  29 # c)
  30 #       CSRCS   -- .c files to compile
  31 #                       (used to define $OBJS)
  32 # d)
  33 #       PROGRAM -- the target program name to create from $OBJS
  34 #                       ($OBJDIR automatically prepended to it)
  35 # e)
  36 #       LIBRARY -- the target library name to create from $OBJS
  37 #                       ($OBJDIR automatically prepended to it)
  38 #
  39 ################################################################################
  40
  41 ifndef topsrcdir
  42 topsrcdir=$(MOD_DEPTH)
  43 endif
  44
  45 ifndef srcdir
  46 srcdir=.
  47 endif
  48
  49 ifndef NSPR_CONFIG_MK
  50 include $(topsrcdir)/config/config.mk
  51 endif
  52
  53 ifdef USE_AUTOCONF
  54 ifdef CROSS_COMPILE
  55 ifdef INTERNAL_TOOLS
  56 CC=$(HOST_CC)
  57 CCC=$(HOST_CXX)
  58 CFLAGS=$(HOST_CFLAGS)
  59 CXXFLAGS=$(HOST_CXXFLAGS)
  60 LDFLAGS=$(HOST_LDFLAGS)
  61 endif
  62 endif
  63 endif
  64
  65 #
  66 # This makefile contains rules for building the following kinds of
  67 # libraries:
  68 # - LIBRARY: a static (archival) library
  69 # - SHARED_LIBRARY: a shared (dynamic link) library
  70 # - IMPORT_LIBRARY: an import library, used only on Windows and OS/2
  71 #
  72 # The names of these libraries can be generated by simply specifying
  73 # LIBRARY_NAME and LIBRARY_VERSION.
  74 #
  75
  76 ifdef LIBRARY_NAME
  77 ifeq (,$(filter-out WINNT WINCE OS2,$(OS_ARCH)))
  78
  79 #
  80 # Win95 and OS/2 require library names conforming to the 8.3 rule.
  81 # other platforms do not.
  82 #
  83 ifeq (,$(filter-out WIN95 WINCE WINMO OS2,$(OS_TARGET)))
  84 SHARED_LIBRARY  = $(OBJDIR)/$(LIBRARY_NAME)$(LIBRARY_VERSION).$(DLL_SUFFIX)
  85 SHARED_LIB_PDB  = $(OBJDIR)/$(LIBRARY_NAME)$(LIBRARY_VERSION).pdb
  86 ifdef MSC_VER
  87 LIBRARY         = $(OBJDIR)/$(LIBRARY_NAME)$(LIBRARY_VERSION)_s.$(LIB_SUFFIX)
  88 IMPORT_LIBRARY  = $(OBJDIR)/$(LIBRARY_NAME)$(LIBRARY_VERSION).$(LIB_SUFFIX)
  89 else
  90 LIBRARY         = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION)_s.$(LIB_SUFFIX)
  91 IMPORT_LIBRARY  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).$(LIB_SUFFIX)
  92 endif
  93 else
  94 SHARED_LIBRARY  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).$(DLL_SUFFIX)
  95 SHARED_LIB_PDB  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).pdb
  96 LIBRARY         = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION)_s.$(LIB_SUFFIX)
  97 IMPORT_LIBRARY  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).$(LIB_SUFFIX)
  98 endif
  99
 100 else
 101
 102 LIBRARY         = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).$(LIB_SUFFIX)
 103 ifeq ($(OS_ARCH)$(OS_RELEASE), AIX4.1)
 104 SHARED_LIBRARY  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION)_shr.a
 105 else
 106 ifdef MKSHLIB
 107 SHARED_LIBRARY  = $(OBJDIR)/lib$(LIBRARY_NAME)$(LIBRARY_VERSION).$(DLL_SUFFIX)
 108 endif
 109 endif
 110
 111 endif
 112 endif
 113
 114 ifndef TARGETS
 115 ifeq (,$(filter-out WINNT WINCE OS2,$(OS_ARCH)))
 116 TARGETS         = $(LIBRARY) $(SHARED_LIBRARY) $(IMPORT_LIBRARY)
 117 ifdef MOZ_DEBUG_SYMBOLS
 118 ifdef MSC_VER
 119 ifneq (,$(filter-out 1100 1200,$(MSC_VER)))
 120 TARGETS         += $(SHARED_LIB_PDB)
 121 endif
 122 endif
 123 endif
 124 else
 125 TARGETS         = $(LIBRARY) $(SHARED_LIBRARY)
 126 endif
 127 endif
 128
 129 #
 130 # OBJS is the list of object files.  It can be constructed by
 131 # specifying CSRCS (list of C source files) and ASFILES (list
 132 # of assembly language source files).
 133 #
 134
 135 ifndef OBJS
 136 OBJS            = $(addprefix $(OBJDIR)/,$(CSRCS:.c=.$(OBJ_SUFFIX))) \
 137                   $(addprefix $(OBJDIR)/,$(ASFILES:.$(ASM_SUFFIX)=.$(OBJ_SUFFIX)))
 138 endif
 139
 140 ALL_TRASH               = $(TARGETS) $(OBJS) $(RES) $(filter-out . .., $(OBJDIR)) LOGS TAGS $(GARBAGE) \
 141                           $(NOSUCHFILE) \
 142                           $(OBJS:.$(OBJ_SUFFIX)=.i_o) \
 143                           so_locations
 144
 145 ifndef RELEASE_LIBS_DEST
 146 RELEASE_LIBS_DEST       = $(RELEASE_LIB_DIR)
 147 endif
 148
 149 define MAKE_IN_DIR
 150         $(MAKE) -C $(dir) $@
 151
 152 endef # do not remove the blank line!
 153
 154 ifdef DIRS
 155 LOOP_OVER_DIRS = $(foreach dir,$(DIRS),$(MAKE_IN_DIR))
 156 endif
 157
 158 ################################################################################
 159
 160 all:: export
 161
 162 export::
 163         +$(LOOP_OVER_DIRS)
 164
 165 libs:: export
 166
 167 clean::
 168         rm -rf $(OBJS) $(RES) so_locations $(NOSUCHFILE) $(GARBAGE)
 169         +$(LOOP_OVER_DIRS)
 170
 171 clobber::
 172         rm -rf $(OBJS) $(RES) $(TARGETS) $(filter-out . ..,$(OBJDIR)) $(GARBAGE) so_locations $(NOSUCHFILE)
 173         +$(LOOP_OVER_DIRS)
 174
 175 realclean clobber_all::
 176         rm -rf $(wildcard *.OBJ *.OBJD) dist $(ALL_TRASH)
 177         +$(LOOP_OVER_DIRS)
 178
 179 distclean::
 180         rm -rf $(wildcard *.OBJ *.OBJD) dist $(ALL_TRASH) $(DIST_GARBAGE)
 181         +$(LOOP_OVER_DIRS)
 182
 183 install:: $(RELEASE_BINS) $(RELEASE_HEADERS) $(RELEASE_LIBS)
 184 ifdef RELEASE_BINS
 185         $(NSINSTALL) -t -m 0755 $(RELEASE_BINS) $(DESTDIR)$(bindir)
 186 endif
 187 ifdef RELEASE_HEADERS
 188         $(NSINSTALL) -t -m 0644 $(RELEASE_HEADERS) $(DESTDIR)$(includedir)/$(include_subdir)
 189 endif
 190 ifdef RELEASE_LIBS
 191         $(NSINSTALL) -t -m 0755 $(RELEASE_LIBS) $(DESTDIR)$(libdir)/$(lib_subdir)
 192 endif
 193         +$(LOOP_OVER_DIRS)
 194
 195 release:: export
 196 ifdef RELEASE_BINS
 197         @echo "Copying executable programs and scripts to release directory"
 198         @if test -z "$(BUILD_NUMBER)"; then \
 199                 echo "BUILD_NUMBER must be defined"; \
 200                 false; \
 201         else \
 202                 true; \
 203         fi
 204         @if test ! -d $(RELEASE_BIN_DIR); then \
 205                 rm -rf $(RELEASE_BIN_DIR); \
 206                 $(NSINSTALL) -D $(RELEASE_BIN_DIR);\
 207         else \
 208                 true; \
 209         fi
 210         cp $(RELEASE_BINS) $(RELEASE_BIN_DIR)
 211 endif
 212 ifdef RELEASE_LIBS
 213         @echo "Copying libraries to release directory"
 214         @if test -z "$(BUILD_NUMBER)"; then \
 215                 echo "BUILD_NUMBER must be defined"; \
 216                 false; \
 217         else \
 218                 true; \
 219         fi
 220         @if test ! -d $(RELEASE_LIBS_DEST); then \
 221                 rm -rf $(RELEASE_LIBS_DEST); \
 222                 $(NSINSTALL) -D $(RELEASE_LIBS_DEST);\
 223         else \
 224                 true; \
 225         fi
 226         cp $(RELEASE_LIBS) $(RELEASE_LIBS_DEST)
 227 endif
 228 ifdef RELEASE_HEADERS
 229         @echo "Copying header files to release directory"
 230         @if test -z "$(BUILD_NUMBER)"; then \
 231                 echo "BUILD_NUMBER must be defined"; \
 232                 false; \
 233         else \
 234                 true; \
 235         fi
 236         @if test ! -d $(RELEASE_HEADERS_DEST); then \
 237                 rm -rf $(RELEASE_HEADERS_DEST); \
 238                 $(NSINSTALL) -D $(RELEASE_HEADERS_DEST);\
 239         else \
 240                 true; \
 241         fi
 242         cp $(RELEASE_HEADERS) $(RELEASE_HEADERS_DEST)
 243 endif
 244         +$(LOOP_OVER_DIRS)
 245
 246 alltags:
 247         rm -f TAGS tags
 248         find . -name dist -prune -o \( -name '*.[hc]' -o -name '*.cp' -o -name '*.cpp' \) -print | xargs etags -a
 249         find . -name dist -prune -o \( -name '*.[hc]' -o -name '*.cp' -o -name '*.cpp' \) -print | xargs ctags -a
 250
 251 $(NFSPWD):
 252         cd $(@D); $(MAKE) $(@F)
 253
 254 $(PROGRAM): $(OBJS)
 255         @$(MAKE_OBJDIR)
 256 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 257 ifdef MOZ_PROFILE_USE
 258 # In the second pass, we need to merge the pgc files into the pgd file.
 259 # The compiler would do this for us automatically if they were in the right
 260 # place, but they're in dist/bin.
 261         python $(topsrcdir)/build/win32/pgomerge.py \
 262                 $(notdir $(PROGRAM:.exe=)) $(DIST)/bin
 263 endif   # MOZ_PROFILE_USE
 264         $(CC) $(OBJS) -Fe$@ -link $(LDFLAGS) $(OS_LIBS) $(EXTRA_LIBS)
 265 ifdef MT
 266         @if test -f $@.manifest; then \
 267                 $(MT) -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;1; \
 268                 rm -f $@.manifest; \
 269         fi
 270 endif   # MSVC with manifest tool
 271 ifdef MOZ_PROFILE_GENERATE
 272 # touch it a few seconds into the future to work around FAT's
 273 # 2-second granularity
 274         touch -t `date +%Y%m%d%H%M.%S -d "now+5seconds"` pgo.relink
 275 endif   # MOZ_PROFILE_GENERATE
 276 else    # WINNT && !GCC
 277         $(CC) -o $@ $(CFLAGS) $(OBJS) $(LDFLAGS) $(WRAP_LDFLAGS)
 278 endif   # WINNT && !GCC
 279 ifdef ENABLE_STRIP
 280         $(STRIP) $@
 281 endif
 282
 283 # Same as OBJS, but without any file that matches p*vrsion.o, since these
 284 # collide for static libraries, and are not useful for that case anyway.
 285 STATICLIB_OBJS = $(filter-out $(OBJDIR)/p%vrsion.$(OBJ_SUFFIX),$(OBJS))
 286 $(LIBRARY): $(STATICLIB_OBJS)
 287         @$(MAKE_OBJDIR)
 288         rm -f $@
 289         $(AR) $(AR_FLAGS) $(STATICLIB_OBJS) $(AR_EXTRA_ARGS)
 290         $(RANLIB) $@
 291
 292 ifeq ($(OS_TARGET), OS2)
 293 $(IMPORT_LIBRARY): $(MAPFILE)
 294         rm -f $@
 295         $(IMPLIB) $@ $(MAPFILE)
 296 else
 297 ifeq (,$(filter-out WIN95 WINCE WINMO,$(OS_TARGET)))
 298 # PDBs and import libraries need to depend on the shared library to
 299 # order dependencies properly.
 300 $(IMPORT_LIBRARY): $(SHARED_LIBRARY)
 301 $(SHARED_LIB_PDB): $(SHARED_LIBRARY)
 302 endif
 303 endif
 304
 305 $(SHARED_LIBRARY): $(OBJS) $(RES) $(MAPFILE)
 306         @$(MAKE_OBJDIR)
 307         rm -f $@
 308 ifeq ($(OS_ARCH)$(OS_RELEASE), AIX4.1)
 309         echo "#!" > $(OBJDIR)/lib$(LIBRARY_NAME)_syms
 310         nm -B -C -g $(OBJS) \
 311                 | awk '/ [T,D] / {print $$3}' \
 312                 | sed -e 's/^\.//' \
 313                 | sort -u >> $(OBJDIR)/lib$(LIBRARY_NAME)_syms
 314         $(LD) $(XCFLAGS) -o $@ $(OBJS) -bE:$(OBJDIR)/lib$(LIBRARY_NAME)_syms \
 315                 -bM:SRE -bnoentry $(OS_LIBS) $(EXTRA_LIBS)
 316 else    # AIX 4.1
 317 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 318 ifdef MOZ_PROFILE_USE
 319         python $(topsrcdir)/build/win32/pgomerge.py \
 320                 $(notdir $(SHARED_LIBRARY:.$(DLL_SUFFIX)=)) $(DIST)/bin
 321 endif   # MOZ_PROFILE_USE
 322         $(LINK_DLL) -MAP $(DLLBASE) $(DLL_LIBS) $(EXTRA_LIBS) $(OBJS) $(RES)
 323 ifdef MT
 324         @if test -f $@.manifest; then \
 325                 $(MT) -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;2; \
 326                 rm -f $@.manifest; \
 327         fi
 328 endif   # MSVC with manifest tool
 329 ifdef MOZ_PROFILE_GENERATE
 330         touch -t `date +%Y%m%d%H%M.%S -d "now+5seconds"` pgo.relink
 331 endif   # MOZ_PROFILE_GENERATE
 332 else    # WINNT && !GCC
 333         $(MKSHLIB) $(OBJS) $(RES) $(LDFLAGS) $(WRAP_LDFLAGS) $(EXTRA_LIBS)
 334 endif   # WINNT && !GCC
 335 endif   # AIX 4.1
 336 ifdef ENABLE_STRIP
 337         $(STRIP) $@
 338 endif
 339
 340 ################################################################################
 341
 342 ifdef MOZ_PROFILE_USE
 343 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 344 # When building with PGO, we have to make sure to re-link
 345 # in the MOZ_PROFILE_USE phase if we linked in the
 346 # MOZ_PROFILE_GENERATE phase. We'll touch this pgo.relink
 347 # file in the link rule in the GENERATE phase to indicate
 348 # that we need a relink.
 349 $(SHARED_LIBRARY): pgo.relink
 350
 351 $(PROGRAM): pgo.relink
 352
 353 endif   # WINNT && !GCC
 354 endif   # MOZ_PROFILE_USE
 355
 356 ifneq (,$(MOZ_PROFILE_GENERATE)$(MOZ_PROFILE_USE))
 357 ifdef NS_USE_GCC
 358 # Force rebuilding libraries and programs in both passes because each
 359 # pass uses different object files.
 360 $(PROGRAM) $(SHARED_LIBRARY) $(LIBRARY): FORCE
 361 .PHONY: FORCE
 362 endif
 363 endif
 364
 365 ################################################################################
 366
 367 ifdef MOZ_PROFILE_GENERATE
 368 # Clean up profiling data during PROFILE_GENERATE phase
 369 export::
 370 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 371         $(foreach pgd,$(wildcard *.pgd),pgomgr -clear $(pgd);)
 372 else
 373 ifdef NS_USE_GCC
 374         -$(RM) *.gcda
 375 endif
 376 endif
 377 endif
 378
 379 ################################################################################
 380
 381 ifeq ($(OS_ARCH),WINNT)
 382 $(RES): $(RESNAME)
 383         @$(MAKE_OBJDIR)
 384 # The resource compiler does not understand the -U option.
 385 ifdef NS_USE_GCC
 386         $(RC) $(RCFLAGS) $(filter-out -U%,$(DEFINES)) $(INCLUDES:-I%=--include-dir %) -o $@ $<
 387 else
 388         $(RC) $(RCFLAGS) $(filter-out -U%,$(DEFINES)) $(INCLUDES) -Fo$@ $<
 389 endif # GCC
 390         @echo $(RES) finished
 391 endif
 392
 393 $(MAPFILE): $(LIBRARY_NAME).def
 394         @$(MAKE_OBJDIR)
 395 ifeq ($(OS_ARCH),SunOS)
 396         grep -v ';-' $< | \
 397         sed -e 's,;+,,' -e 's; DATA ;;' -e 's,;;,,' -e 's,;.*,;,' > $@
 398 endif
 399 ifeq ($(OS_ARCH),OS2)
 400         echo LIBRARY $(LIBRARY_NAME)$(LIBRARY_VERSION) INITINSTANCE TERMINSTANCE > $@
 401         echo PROTMODE >> $@
 402         echo CODE    LOADONCALL MOVEABLE DISCARDABLE >> $@
 403         echo DATA    PRELOAD MOVEABLE MULTIPLE NONSHARED >> $@
 404         echo EXPORTS >> $@
 405         grep -v ';+' $< | grep -v ';-' | \
 406         sed -e 's; DATA ;;' -e 's,;;,,' -e 's,;.*,,' -e 's,\([\t ]*\),\1_,' | \
 407         awk 'BEGIN {ord=1;} { print($$0 " @" ord " RESIDENTNAME"); ord++;}'     >> $@
 408         $(ADD_TO_DEF_FILE)
 409 endif
 410
 411 #
 412 # Translate source filenames to absolute paths. This is required for
 413 # debuggers under Windows and OS/2 to find source files automatically.
 414 #
 415
 416 ifeq (,$(filter-out AIX OS2,$(OS_ARCH)))
 417 NEED_ABSOLUTE_PATH = 1
 418 endif
 419
 420 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 421 NEED_ABSOLUTE_PATH = 1
 422 endif
 423
 424 ifdef NEED_ABSOLUTE_PATH
 425 # The quotes allow absolute paths to contain spaces.
 426 pr_abspath = "$(if $(findstring :,$(1)),$(1),$(if $(filter /%,$(1)),$(1),$(CURDIR)/$(1)))"
 427 endif
 428
 429 $(OBJDIR)/%.$(OBJ_SUFFIX): %.cpp
 430         @$(MAKE_OBJDIR)
 431 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 432         $(CCC) -Fo$@ -c $(CCCFLAGS) $(call pr_abspath,$<)
 433 else
 434 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINCE)
 435         $(CCC) -Fo$@ -c $(CCCFLAGS) $<
 436 else
 437 ifdef NEED_ABSOLUTE_PATH
 438         $(CCC) -o $@ -c $(CCCFLAGS) $(call pr_abspath,$<)
 439 else
 440         $(CCC) -o $@ -c $(CCCFLAGS) $<
 441 endif
 442 endif
 443 endif
 444
 445 WCCFLAGS1 = $(subst /,\\,$(CFLAGS))
 446 WCCFLAGS2 = $(subst -I,-i=,$(WCCFLAGS1))
 447 WCCFLAGS3 = $(subst -D,-d,$(WCCFLAGS2))
 448 $(OBJDIR)/%.$(OBJ_SUFFIX): %.c
 449         @$(MAKE_OBJDIR)
 450 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINNT)
 451         $(CC) -Fo$@ -c $(CFLAGS) $(call pr_abspath,$<)
 452 else
 453 ifeq ($(NS_USE_GCC)_$(OS_ARCH),_WINCE)
 454         $(CC) -Fo$@ -c $(CFLAGS) $<
 455 else
 456 ifdef NEED_ABSOLUTE_PATH
 457         $(CC) -o $@ -c $(CFLAGS) $(call pr_abspath,$<)
 458 else
 459         $(CC) -o $@ -c $(CFLAGS) $<
 460 endif
 461 endif
 462 endif
 463
 464
 465 $(OBJDIR)/%.$(OBJ_SUFFIX): %.s
 466         @$(MAKE_OBJDIR)
 467         $(AS) -o $@ $(ASFLAGS) -c $<
 468
 469 %.i: %.c
 470         $(CC) -C -E $(CFLAGS) $< > $*.i
 471
 472 %: %.pl
 473         rm -f $@; cp $< $@; chmod +x $@
 474
 475 #
 476 # HACK ALERT
 477 #
 478 # The only purpose of this rule is to pass Mozilla's Tinderbox depend
 479 # builds (http://tinderbox.mozilla.org/showbuilds.cgi).  Mozilla's
 480 # Tinderbox builds NSPR continuously as part of the Mozilla client.
 481 # Because NSPR's make depend is not implemented, whenever we change
 482 # an NSPR header file, the depend build does not recompile the NSPR
 483 # files that depend on the header.
 484 #
 485 # This rule makes all the objects depend on a dummy header file.
 486 # Touch this dummy header file to force the depend build to recompile
 487 # everything.
 488 #
 489 # This rule should be removed when make depend is implemented.
 490 #
 491
 492 DUMMY_DEPEND_H = $(topsrcdir)/config/prdepend.h
 493
 494 $(filter $(OBJDIR)/%.$(OBJ_SUFFIX),$(OBJS)): $(OBJDIR)/%.$(OBJ_SUFFIX): $(DUMMY_DEPEND_H)
 495
 496 # END OF HACK
 497
 498 ################################################################################
 499 # Special gmake rules.
 500 ################################################################################
 501
 502 #
 503 # Disallow parallel builds with MSVC < 8 since it can't open the PDB file in
 504 # parallel.
 505 #
 506 ifeq (,$(filter-out 1200 1300 1310,$(MSC_VER)))
 507 .NOTPARALLEL:
 508 endif
 509
 510 #
 511 # Re-define the list of default suffixes, so gmake won't have to churn through
 512 # hundreds of built-in suffix rules for stuff we don't need.
 513 #
 514 .SUFFIXES:
 515 .SUFFIXES: .a .$(OBJ_SUFFIX) .c .cpp .s .h .i .pl
 516
 517 #
 518 # Fake targets.  Always run these rules, even if a file/directory with that
 519 # name already exists.
 520 #
 521 .PHONY: all alltags clean export install libs realclean release
 522
 523 #
 524 # List the target pattern of an implicit rule as a dependency of the
 525 # special target .PRECIOUS to preserve intermediate files made by
 526 # implicit rules whose target patterns match that file's name.
 527 # (See GNU Make documentation, Edition 0.51, May 1996, Sec. 10.4,
 528 # p. 107.)
 529 #
 530 .PRECIOUS: $(OBJDIR)/%.$(OBJ_SUFFIX)