posix/Makefile

   1 # Copyright (C) 1991-2019 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <https://www.gnu.org/licenses/>.
  17
  18 #
  19 #       Sub-makefile for POSIX portion of the library.
  20 #
  21 subdir  := posix
  22
  23 include ../Makeconfig
  24
  25 headers := sys/utsname.h sys/times.h sys/wait.h sys/types.h unistd.h          \
  26            glob.h regex.h wordexp.h fnmatch.h                                 \
  27            getopt.h bits/getopt_core.h bits/getopt_ext.h bits/getopt_posix.h  \
  28            bits/types.h bits/typesizes.h bits/pthreadtypes.h                  \
  29            bits/pthreadtypes-arch.h bits/thread-shared-types.h                \
  30            bits/posix1_lim.h bits/posix2_lim.h bits/posix_opt.h               \
  31            bits/local_lim.h tar.h bits/utsname.h bits/confname.h              \
  32            bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h            \
  33            bits/sched.h bits/cpu-set.h re_comp.h wait.h bits/environments.h   \
  34            cpio.h spawn.h bits/unistd.h bits/types/struct_sched_param.h       \
  35            bits/unistd_ext.h
  36
  37 routines :=                                                                   \
  38         uname                                                                 \
  39         times                                                                 \
  40         wait waitpid wait3 wait4 waitid                                       \
  41         alarm sleep pause nanosleep                                           \
  42         fork vfork _exit                                                      \
  43         execve fexecve execv execle execl execvp execlp execvpe               \
  44         getpid getppid                                                        \
  45         getuid geteuid getgid getegid getgroups setuid setgid group_member    \
  46         getpgid setpgid getpgrp bsd-getpgrp setpgrp getsid setsid             \
  47         getresuid getresgid setresuid setresgid                               \
  48         pathconf sysconf fpathconf                                            \
  49         glob glob64 globfree globfree64 glob_pattern_p fnmatch regex          \
  50         glob-lstat-compat glob64-lstat-compat                                 \
  51         confstr                                                               \
  52         getopt getopt1                                                        \
  53         sched_setp sched_getp sched_sets sched_gets sched_yield sched_primax  \
  54         sched_primin sched_rr_gi sched_getaffinity sched_setaffinity          \
  55         getaddrinfo gai_strerror wordexp                                      \
  56         pread pwrite pread64 pwrite64                                         \
  57         spawn_faction_init spawn_faction_destroy spawn_faction_addclose       \
  58         spawn_faction_addopen spawn_faction_adddup2 spawn_valid_fd            \
  59         spawn_faction_addchdir spawn_faction_addfchdir                        \
  60         spawnattr_init spawnattr_destroy                                      \
  61         spawnattr_getdefault spawnattr_setdefault                             \
  62         spawnattr_getflags spawnattr_setflags                                 \
  63         spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni           \
  64         spawnattr_getsigmask spawnattr_getschedpolicy spawnattr_getschedparam \
  65         spawnattr_setsigmask spawnattr_setschedpolicy spawnattr_setschedparam \
  66         posix_madvise                                                         \
  67         get_child_max sched_cpucount sched_cpualloc sched_cpufree \
  68         streams-compat
  69
  70 aux             := init-posix environ
  71 tests           := test-errno tstgetopt testfnm runtests runptests \
  72                    tst-preadwrite tst-preadwrite64 test-vfork regexbug1 \
  73                    tst-mmap tst-mmap-offset tst-getaddrinfo tst-truncate \
  74                    tst-truncate64 tst-fork tst-fnmatch tst-regexloc tst-dir \
  75                    tst-chmod bug-regex1 bug-regex2 bug-regex3 bug-regex4 \
  76                    tst-gnuglob tst-gnuglob64 tst-regex bug-regex6 bug-regex7 \
  77                    bug-regex8 bug-regex9 bug-regex10 bug-regex11 bug-regex12 \
  78                    bug-regex13 bug-regex14 bug-regex15 bug-regex16 \
  79                    bug-regex17 bug-regex18 bug-regex19 \
  80                    bug-regex21 bug-regex22 bug-regex23 bug-regex24 \
  81                    bug-regex25 bug-regex26 bug-regex27 bug-regex28 \
  82                    bug-regex29 bug-regex30 bug-regex31 bug-regex32 \
  83                    tst-nice tst-nanosleep tst-regex2 \
  84                    transbug tst-rxspencer tst-pcre tst-boost \
  85                    bug-ga1 tst-vfork1 tst-vfork2 tst-vfork3 tst-waitid \
  86                    tst-getaddrinfo2 bug-glob2 bug-glob3 tst-sysconf \
  87                    tst-execvp1 tst-execvp2 tst-execlp1 tst-execlp2 \
  88                    tst-execv1 tst-execv2 tst-execl1 tst-execl2 \
  89                    tst-execve1 tst-execve2 tst-execle1 tst-execle2 \
  90                    tst-execvp3 tst-execvp4 \
  91                    tst-execvpe1 tst-execvpe2 tst-execvpe3 tst-execvpe4 \
  92                    tst-execvpe5 tst-execvpe6 \
  93                    tst-getaddrinfo3 tst-fnmatch2 tst-cpucount tst-cpuset \
  94                    bug-getopt1 bug-getopt2 bug-getopt3 bug-getopt4 \
  95                    bug-getopt5 tst-getopt_long1 bug-regex34 bug-regex35 \
  96                    tst-pathconf tst-rxspencer-no-utf8 \
  97                    tst-fnmatch3 bug-regex36 \
  98                    tst-fnmatch4 tst-fnmatch5 \
  99                    tst-posix_spawn-fd tst-posix_spawn-setsid \
 100                    tst-posix_fadvise tst-posix_fadvise64 \
 101                    tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
 102                    tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
 103                    bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
 104                    tst-wordexp-nocmd
 105 tests-internal  := bug-regex5 bug-regex20 bug-regex33 \
 106                    tst-rfc3484 tst-rfc3484-2 tst-rfc3484-3 \
 107                    tst-glob_lstat_compat tst-spawn4-compat
 108 xtests          := bug-ga2 tst-getaddrinfo4 tst-getaddrinfo5
 109 ifeq (yes,$(build-shared))
 110 test-srcs       := globtest
 111 tests           += wordexp-test tst-exec tst-spawn tst-spawn2 tst-spawn3
 112 endif
 113 ifeq (yesyes,$(build-shared)$(have-thread-library))
 114 tests           += tst-getopt-cancel
 115 endif
 116 tests-static    = tst-exec-static tst-spawn-static
 117 tests           += $(tests-static)
 118 others          := getconf
 119 install-bin     := getconf
 120 install-others-programs := $(inst_libexecdir)/getconf
 121
 122 before-compile  += $(objpfx)posix-conf-vars-def.h
 123
 124 # So they get cleaned up.
 125 generated += $(addprefix wordexp-test-result, 1 2 3 4 5 6 7 8 9 10) \
 126              annexc annexc.out wordexp-tst.out bug-regex2-mem.out \
 127              bug-regex2.mtrace bug-regex14-mem.out bug-regex14.mtrace \
 128              bug-regex21-mem.out bug-regex21.mtrace \
 129              bug-regex31-mem.out bug-regex31.mtrace \
 130              tst-rxspencer-no-utf8-mem.out tst-rxspencer-no-utf8.mtrace \
 131              tst-getconf.out \
 132              tst-pcre-mem.out tst-pcre.mtrace tst-boost-mem.out \
 133              tst-boost.mtrace bug-ga2.mtrace bug-ga2-mem.out \
 134              bug-glob2.mtrace bug-glob2-mem.out tst-vfork3-mem.out \
 135              tst-vfork3.mtrace getconf.speclist tst-fnmatch-mem.out \
 136              tst-fnmatch.mtrace bug-regex36.mtrace \
 137              testcases.h ptestcases.h
 138
 139 ifeq ($(run-built-tests),yes)
 140 ifeq (yes,$(build-shared))
 141 tests-special += $(objpfx)globtest.out $(objpfx)wordexp-tst.out
 142 endif
 143 endif
 144
 145 # Run a test on the header files we use.
 146 # XXX Please note that for now we ignore the result of this test.
 147 tests-special += $(objpfx)annexc.out
 148 ifeq ($(run-built-tests),yes)
 149 tests-special += $(objpfx)bug-regex2-mem.out $(objpfx)bug-regex14-mem.out \
 150                  $(objpfx)bug-regex21-mem.out $(objpfx)bug-regex31-mem.out \
 151                  $(objpfx)tst-rxspencer-no-utf8-mem.out $(objpfx)tst-pcre-mem.out \
 152                  $(objpfx)tst-boost-mem.out $(objpfx)tst-getconf.out \
 153                  $(objpfx)bug-glob2-mem.out $(objpfx)tst-vfork3-mem.out \
 154                  $(objpfx)tst-fnmatch-mem.out $(objpfx)bug-regex36-mem.out \
 155                  $(objpfx)tst-glob-tilde-mem.out
 156 xtests-special += $(objpfx)bug-ga2-mem.out
 157 endif
 158
 159 include ../Rules
 160
 161 ifeq ($(run-built-tests),yes)
 162 # globtest and wordexp-test currently only works with shared libraries
 163 ifeq (yes,$(build-shared))
 164 $(objpfx)globtest.out: globtest.sh $(objpfx)globtest
 165         $(SHELL) $< $(common-objpfx) '$(test-via-rtld-prefix)' \
 166                 '$(test-program-prefix)' '$(test-wrapper-env)' > $@; \
 167         $(evaluate-test)
 168 $(objpfx)wordexp-tst.out: wordexp-tst.sh $(objpfx)wordexp-test
 169         $(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
 170                  '$(run-program-env)' '$(test-program-prefix-after-env)' > $@; \
 171         $(evaluate-test)
 172 endif
 173
 174 LOCALES := cs_CZ.UTF-8 da_DK.ISO-8859-1 de_DE.ISO-8859-1 de_DE.UTF-8 \
 175            en_US.UTF-8 es_US.ISO-8859-1 es_US.UTF-8 ja_JP.EUC-JP tr_TR.UTF-8 \
 176            cs_CZ.ISO-8859-2
 177 include ../gen-locales.mk
 178
 179 $(objpfx)bug-regex1.out: $(gen-locales)
 180 $(objpfx)bug-regex4.out: $(gen-locales)
 181 $(objpfx)bug-regex5.out: $(gen-locales)
 182 $(objpfx)bug-regex6.out: $(gen-locales)
 183 $(objpfx)bug-regex17.out: $(gen-locales)
 184 $(objpfx)bug-regex18.out: $(gen-locales)
 185 $(objpfx)bug-regex19.out: $(gen-locales)
 186 $(objpfx)bug-regex20.out: $(gen-locales)
 187 $(objpfx)bug-regex22.out: $(gen-locales)
 188 $(objpfx)bug-regex23.out: $(gen-locales)
 189 $(objpfx)bug-regex25.out: $(gen-locales)
 190 $(objpfx)bug-regex26.out: $(gen-locales)
 191 $(objpfx)bug-regex30.out: $(gen-locales)
 192 $(objpfx)bug-regex32.out: $(gen-locales)
 193 $(objpfx)bug-regex33.out: $(gen-locales)
 194 $(objpfx)bug-regex34.out: $(gen-locales)
 195 $(objpfx)bug-regex35.out: $(gen-locales)
 196 $(objpfx)tst-fnmatch.out: $(gen-locales)
 197 $(objpfx)tst-fnmatch4.out: $(gen-locales)
 198 $(objpfx)tst-fnmatch5.out: $(gen-locales)
 199 $(objpfx)tst-regex.out: $(gen-locales)
 200 $(objpfx)tst-regex2.out: $(gen-locales)
 201 $(objpfx)tst-regexloc.out: $(gen-locales)
 202 $(objpfx)tst-rxspencer.out: $(gen-locales)
 203 $(objpfx)tst-rxspencer-no-utf8.out: $(gen-locales)
 204 $(objpfx)tst-regcomp-truncated.out: $(gen-locales)
 205 endif
 206
 207 # If we will use the generic uname implementation, we must figure out what
 208 # it will say by examining the system, and write the results in config-name.h.
 209 uname.c: $(objpfx)config-name.h
 210 $(objpfx)config-name.h: $(..)scripts/config-uname.sh $(common-objpfx)config.make
 211         $(make-target-directory)
 212         $< '$(config-os)' '$(config-release)' \
 213            '$(config-machine)-$(config-vendor)' > $@.new
 214         mv -f $@.new $@
 215
 216 CFLAGS-getaddrinfo.c += -DRESOLVER -fexceptions
 217 CFLAGS-pause.c += -fexceptions -fasynchronous-unwind-tables
 218 CFLAGS-pread.c += -fexceptions -fasynchronous-unwind-tables
 219 CFLAGS-pread64.c += -fexceptions -fasynchronous-unwind-tables
 220 CFLAGS-pwrite.c += -fexceptions -fasynchronous-unwind-tables
 221 CFLAGS-pwrite64.c += -fexceptions -fasynchronous-unwind-tables
 222 CFLAGS-sleep.c += -fexceptions
 223 CFLAGS-wait.c += -fexceptions -fasynchronous-unwind-tables
 224 CFLAGS-waitid.c += -fexceptions -fasynchronous-unwind-tables
 225 CFLAGS-waitpid.c += -fexceptions -fasynchronous-unwind-tables
 226 CFLAGS-getopt.c += -fexceptions
 227 CFLAGS-wordexp.c += -fexceptions
 228 CFLAGS-wordexp.os = -fomit-frame-pointer
 229 CFLAGS-sysconf.c += -fexceptions -DGETCONF_DIR='"$(libexecdir)/getconf"'
 230 CFLAGS-pathconf.c += -fexceptions
 231 CFLAGS-fpathconf.c += -fexceptions
 232 CFLAGS-spawn.c += -fexceptions
 233 CFLAGS-spawn.os = -fomit-frame-pointer
 234 CFLAGS-spawnp.c += -fexceptions
 235 CFLAGS-spawnp.os = -fomit-frame-pointer
 236 CFLAGS-spawni.c += -fexceptions
 237 CFLAGS-spawni.os = -fomit-frame-pointer
 238 CFLAGS-glob.c += $(uses-callbacks) -fexceptions
 239 CFLAGS-glob64.c += $(uses-callbacks) -fexceptions
 240 CFLAGS-getconf.c += -DGETCONF_DIR='"$(libexecdir)/getconf"'
 241 CFLAGS-execve.os = -fomit-frame-pointer
 242 CFLAGS-fexecve.os = -fomit-frame-pointer
 243 CFLAGS-execv.os = -fomit-frame-pointer
 244 CFLAGS-execle.os = -fomit-frame-pointer
 245 CFLAGS-execl.os = -fomit-frame-pointer
 246 CFLAGS-execvp.os = -fomit-frame-pointer
 247 CFLAGS-execlp.os = -fomit-frame-pointer
 248 CFLAGS-nanosleep.c += -fexceptions -fasynchronous-unwind-tables
 249
 250 tstgetopt-ARGS = -a -b -cfoobar --required foobar --optional=bazbug \
 251                 --none random --col --color --colour
 252
 253 tst-exec-ARGS = -- $(host-test-program-cmd)
 254 tst-exec-static-ARGS = $(tst-exec-ARGS)
 255 tst-execvpe5-ARGS = -- $(host-test-program-cmd)
 256 tst-spawn-ARGS = -- $(host-test-program-cmd)
 257 tst-spawn-static-ARGS = $(tst-spawn-ARGS)
 258 tst-dir-ARGS = `pwd` `cd $(common-objdir)/$(subdir); pwd` `cd $(common-objdir); pwd` $(objpfx)tst-dir
 259 tst-chmod-ARGS = $(objdir)
 260 tst-vfork3-ARGS = --test-dir=$(objpfx)
 261
 262 tst-rxspencer-ARGS = --utf8 rxspencer/tests
 263 tst-rxspencer-no-utf8-ARGS = rxspencer/tests
 264 tst-pcre-ARGS = PCRE.tests
 265 tst-boost-ARGS = BOOST.tests
 266 bug-glob1-ARGS = "$(objpfx)"
 267 tst-execvp3-ARGS = --test-dir=$(objpfx)
 268 CFLAGS-tst-spawn3.c += -DOBJPFX=\"$(objpfx)\"
 269
 270 $(objpfx)testcases.h: TESTS TESTS2C.sed
 271         LC_ALL=C sed -f TESTS2C.sed < $< > $@T
 272         mv $@T $@
 273 $(objpfx)runtests.o: $(objpfx)testcases.h
 274
 275 $(objpfx)ptestcases.h: PTESTS PTESTS2C.sed
 276         LC_ALL=C sed -f PTESTS2C.sed < $< > $@T
 277         mv $@T $@
 278 $(objpfx)runptests.o: $(objpfx)ptestcases.h
 279
 280 $(objpfx)tst-getopt-cancel: $(shared-thread-library)
 281
 282 test-xfail-annexc = yes
 283 $(objpfx)annexc.out: $(objpfx)annexc
 284         $(dir $<)$(notdir $<) '$(CC)' \
 285           '$(patsubst %,-I../%,$(sorted-subdirs)) -I../include $(+sysdep-includes) $(sysincludes) -I..' > $@; \
 286         $(evaluate-test)
 287
 288 annexc-CFLAGS = -O
 289 $(objpfx)annexc: annexc.c
 290         $(native-compile)
 291
 292 tst-fnmatch-ENV += MALLOC_TRACE=$(objpfx)tst-fnmatch.mtrace
 293
 294 $(objpfx)tst-fnmatch-mem.out: $(objpfx)tst-fnmatch.out
 295         $(common-objpfx)malloc/mtrace $(objpfx)tst-fnmatch.mtrace > $@; \
 296         $(evaluate-test)
 297
 298 bug-regex2-ENV = MALLOC_TRACE=$(objpfx)bug-regex2.mtrace
 299
 300 $(objpfx)bug-regex2-mem.out: $(objpfx)bug-regex2.out
 301         $(common-objpfx)malloc/mtrace $(objpfx)bug-regex2.mtrace > $@; \
 302         $(evaluate-test)
 303
 304 bug-regex14-ENV = MALLOC_TRACE=$(objpfx)bug-regex14.mtrace
 305
 306 $(objpfx)bug-regex14-mem.out: $(objpfx)bug-regex14.out
 307         $(common-objpfx)malloc/mtrace $(objpfx)bug-regex14.mtrace > $@; \
 308         $(evaluate-test)
 309
 310 bug-regex21-ENV = MALLOC_TRACE=$(objpfx)bug-regex21.mtrace
 311
 312 $(objpfx)bug-regex21-mem.out: $(objpfx)bug-regex21.out
 313         $(common-objpfx)malloc/mtrace $(objpfx)bug-regex21.mtrace > $@; \
 314         $(evaluate-test)
 315
 316 bug-regex31-ENV = MALLOC_TRACE=$(objpfx)bug-regex31.mtrace
 317
 318 $(objpfx)bug-regex31-mem.out: $(objpfx)bug-regex31.out
 319         $(common-objpfx)malloc/mtrace $(objpfx)bug-regex31.mtrace > $@; \
 320         $(evaluate-test)
 321
 322 bug-regex36-ENV = MALLOC_TRACE=$(objpfx)bug-regex36.mtrace
 323
 324 $(objpfx)bug-regex36-mem.out: $(objpfx)bug-regex36.out
 325         $(common-objpfx)malloc/mtrace $(objpfx)bug-regex36.mtrace > $@; \
 326         $(evaluate-test)
 327
 328 tst-vfork3-ENV = MALLOC_TRACE=$(objpfx)tst-vfork3.mtrace
 329
 330 $(objpfx)tst-vfork3-mem.out: $(objpfx)tst-vfork3.out
 331         $(common-objpfx)malloc/mtrace $(objpfx)tst-vfork3.mtrace > $@; \
 332         $(evaluate-test)
 333
 334 # tst-rxspencer.mtrace is not generated, only
 335 # tst-rxspencer-no-utf8.mtrace, since otherwise the file has almost
 336 # 100M and takes very long time to process.
 337 tst-rxspencer-no-utf8-ENV += MALLOC_TRACE=$(objpfx)tst-rxspencer-no-utf8.mtrace
 338 $(objpfx)tst-rxspencer-no-utf8-mem.out: $(objpfx)tst-rxspencer-no-utf8.out
 339         $(common-objpfx)malloc/mtrace $(objpfx)tst-rxspencer-no-utf8.mtrace \
 340                                       > $@; \
 341         $(evaluate-test)
 342
 343 tst-pcre-ENV = MALLOC_TRACE=$(objpfx)tst-pcre.mtrace
 344 $(objpfx)tst-pcre-mem.out: $(objpfx)tst-pcre.out
 345         $(common-objpfx)malloc/mtrace $(objpfx)tst-pcre.mtrace > $@; \
 346         $(evaluate-test)
 347
 348 tst-boost-ENV = MALLOC_TRACE=$(objpfx)tst-boost.mtrace
 349 $(objpfx)tst-boost-mem.out: $(objpfx)tst-boost.out
 350         $(common-objpfx)malloc/mtrace $(objpfx)tst-boost.mtrace > $@; \
 351         $(evaluate-test)
 352
 353 $(objpfx)tst-getconf.out: tst-getconf.sh $(objpfx)getconf
 354         $(SHELL) $< $(common-objpfx) '$(built-program-cmd)' > $@; \
 355         $(evaluate-test)
 356
 357 $(objpfx)bug-ga2-mem.out: $(objpfx)bug-ga2.out
 358         $(common-objpfx)malloc/mtrace $(objpfx)bug-ga2.mtrace > $@; \
 359         $(evaluate-test)
 360
 361 bug-ga2-ENV = MALLOC_TRACE=$(objpfx)bug-ga2.mtrace
 362
 363 bug-glob2-ENV = MALLOC_TRACE=$(objpfx)bug-glob2.mtrace
 364
 365 $(objpfx)bug-glob2-mem.out: $(objpfx)bug-glob2.out
 366         $(common-objpfx)malloc/mtrace $(objpfx)bug-glob2.mtrace > $@; \
 367         $(evaluate-test)
 368
 369 tst-glob-tilde-ENV = MALLOC_TRACE=$(objpfx)tst-glob-tilde.mtrace
 370
 371 $(objpfx)tst-glob-tilde-mem.out: $(objpfx)tst-glob-tilde.out
 372         $(common-objpfx)malloc/mtrace $(objpfx)tst-glob-tilde.mtrace > $@; \
 373         $(evaluate-test)
 374
 375 $(inst_libexecdir)/getconf: $(inst_bindir)/getconf \
 376                             $(objpfx)getconf.speclist FORCE
 377         $(addprefix $(..)./scripts/mkinstalldirs ,\
 378                     $(filter-out $(wildcard $@),$@))
 379         while read spec; do \
 380           ln -f $< $@/$$spec.new || $(INSTALL_PROGRAM) $< $@/$$spec.new; \
 381           mv -f $@/$$spec.new $@/$$spec; \
 382         done < $(objpfx)getconf.speclist
 383
 384 $(objpfx)getconf.speclist: getconf-speclist.c posix-envs.def
 385         $(compile.c) -E -o - \
 386             | sed -n -e '/@@@PRESENT_/s/@@@PRESENT_//p' > $@.new
 387         mv -f $@.new $@
 388
 389 # This file is only actually needed at install time.  But forcing it to
 390 # be built both makes it available for eyeball inspection and avoids the
 391 # surprise of things that look like compilation being done by 'make install'.
 392 others: $(objpfx)getconf.speclist
 393
 394 $(objpfx)posix-conf-vars-def.h: $(..)scripts/gen-posix-conf-vars.awk \
 395                                 posix-conf-vars.list Makefile
 396         $(make-target-directory)
 397         $(AWK) -f $(filter-out Makefile, $^) > $@.tmp
 398         mv -f $@.tmp $@