configure.ac

   1 # Process this file with autoconf to produce a configure script.
   2
   3 AC_PREREQ([2.69])
   4 AC_INIT([got-portable],
   5         m4_esyscmd_s(util/got-portable-ver.sh),
   6         [thomas@xteddy.org])
   7 AC_CONFIG_AUX_DIR(etc)
   8 AC_CONFIG_SRCDIR([lib/rcsutil.h])
   9 AM_INIT_AUTOMAKE([foreign subdir-objects])
  10
  11 AC_CONFIG_HEADERS([include/got_compat.h])
  12
  13 AC_DEFINE_UNQUOTED(VERSION, $VERSION)
  14 AC_SUBST(VERSION)
  15 AC_SUBST(GOT_RELEASE)
  16
  17 AC_DEFINE_UNQUOTED([GOT_VERSION], VERSION, [GoT version string])
  18 AC_DEFINE_UNQUOTED([GOT_VERSION_NUMBER], VERSION, [Got version number])
  19
  20 AC_USE_SYSTEM_EXTENSIONS
  21 AC_CANONICAL_HOST
  22
  23 AC_CONFIG_SUBDIRS([template])
  24 AC_ARG_ENABLE([cvg],
  25                AS_HELP_STRING([--enable-cvg],
  26                               [EXPERIMENTAL: cvg - cvs-like-git]))
  27
  28 # Override gotd's empty_path location.
  29 AC_ARG_WITH([gotd-empty-path],
  30             [AS_HELP_STRING([--with-gotd-empty-path],
  31                             [gotd empty path])
  32             ],
  33             [GOTD_EMPTY_PATHC=$withval]
  34             [])
  35 AC_SUBST(GOTD_EMPTY_PATHC)
  36
  37 # Override where git's libexec helpers are located for gitwrapper.
  38 AC_ARG_WITH([gitwrapper-git-libexec-path],
  39             [AS_HELP_STRING([--with-gitwrapper-git-libexec-path],
  40                             [git libexec path for gitwrapper])
  41             ],
  42             [GITWRAPPER_LIBEXEC_PATHC=$withval]
  43             [])
  44 AC_SUBST(GITWRAPPER_LIBEXEC_PATHC)
  45
  46 # When CFLAGS isn't set at this stage and gcc is detected by the macro below,
  47 # autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an
  48 # empty default.
  49 : ${CFLAGS=""}
  50
  51 # Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because
  52 # AC_CHECK_HEADER doesn't give us any other way to update the include
  53 # paths. But for Makefile.am we want to use AM_CPPFLAGS and friends.
  54 SAVED_CFLAGS="$CFLAGS"
  55 SAVED_CPPFLAGS="$CPPFLAGS"
  56 SAVED_LDFLAGS="$LDFLAGS"
  57
  58 # YACC override
  59 YACC_OVERRIDE="yes"
  60
  61 # Checks for programs.
  62 AC_PROG_CC
  63 AC_PROG_CPP
  64 AC_PROG_INSTALL
  65 AC_PROG_LN_S
  66 AC_PROG_MAKE_SET
  67 if test -z "$YACC"; then
  68 YACC_OVERRIDE="no"
  69 AC_PROG_YACC
  70 fi
  71 AM_PROG_AR
  72 AC_PROG_RANLIB
  73 PKG_PROG_PKG_CONFIG
  74
  75 if test "$YACC_OVERRIDE" = "yes"; then
  76         AC_MSG_NOTICE("Using YACC set from environment: $YACC")
  77 fi
  78
  79 # Checks for header files.
  80 AC_CHECK_HEADERS([ \
  81         fcntl.h \
  82         getopt.h \
  83         langinfo.h \
  84         libutil.h \
  85         limits.h \
  86         linux/landlock.h \
  87         locale.h \
  88         netdb.h \
  89         netinet/in.h \
  90         paths.h \
  91         poll.h \
  92         sha.h \
  93         sha1.h \
  94         sha2.h \
  95         sha256.h \
  96         stddef.h \
  97         stdint.h \
  98         stdlib.h \
  99         string.h \
 100         sys/ioctl.h \
 101         sys/param.h \
 102         sys/poll.h \
 103         sys/queue.h \
 104         sys/select.h \
 105         sys/socket.h \
 106         sys/time.h \
 107         sys/tree.h \
 108         tls.h \
 109         util.h \
 110         unistd.h \
 111         wchar.h \
 112 ])
 113
 114 AC_HEADER_DIRENT
 115 AC_CHECK_DECL([F_CLOSEM],
 116               HAVE_FCNTL_CLOSEM
 117               AC_DEFINE([HAVE_FCNTL_CLOSEM], [1],
 118                         [Use F_CLOSEM fcntl for closefrom]),
 119                         [],
 120                         [#include <limits.h>
 121                          #include <fcntl.h>
 122                         ]
 123 )
 124
 125 AC_MSG_CHECKING([for /proc/pid/fd directory])
 126 if test -d "/proc/$$/fd" ; then
 127         AC_DEFINE([HAVE_PROC_PID], [1], [Define if you have /proc/$pid/fd])
 128         AC_MSG_RESULT([yes])
 129 else
 130         AC_MSG_RESULT([no])
 131 fi
 132
 133 AC_MSG_CHECKING([whether program_invocation_short_name is defined])
 134 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 135         #include <argp.h>
 136 ]], [[
 137         program_invocation_short_name = "test";
 138 ]])], [
 139         AC_MSG_RESULT([yes])
 140         AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
 141                 [Define if program_invocation_short_name is defined])
 142 ], [
 143         AC_MSG_RESULT([no])
 144 ])
 145
 146 # Look for prctl(PR_SET_NAME).
 147 AC_CHECK_DECL(
 148         [PR_SET_NAME],
 149         [AC_DEFINE([HAVE_PR_SET_NAME], [1], [Define if PR_SET_NAME is defined])],
 150         [],
 151         [#include <sys/prctl.h>]
 152 )
 153
 154 AM_CONDITIONAL([HAVE_SHA2], [test "x$ac_cv_header_sha2_h" = xyes || \
 155         test "x$ac_cv_header_sha256_h" = xyes])
 156
 157 AC_CACHE_CHECK([whether getopt has optreset support],
 158                 ac_cv_have_getopt_optreset, [
 159         AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <getopt.h> ]],
 160                 [[ extern int optreset; optreset = 0; ]])],
 161         [ ac_cv_have_getopt_optreset="yes" ],
 162         [ ac_cv_have_getopt_optreset="no"
 163         ])
 164 ])
 165
 166 AM_CONDITIONAL([HAVE_GETOPT], [test "x$ac_cv_have_getopt_optreset" = "xyes"])
 167 if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then
 168         AC_DEFINE([HAVE_GETOPT_OPTRESET], [1],
 169                 [Define if your getopt(3) defines and uses optreset])
 170 fi
 171
 172 AC_CHECK_MEMBERS([struct pollfd.fd], [], [], [[
 173 #include <sys/types.h>
 174 #ifdef HAVE_POLL_H
 175 #include <poll.h>
 176 #endif
 177 #ifdef HAVE_SYS_POLL_H
 178 #include <sys/poll.h>
 179 #endif
 180 ]])
 181
 182 # Checks for typ edefs, structures, and compiler characteristics.
 183 AC_CHECK_HEADER_STDBOOL
 184 AC_C_INLINE
 185 AC_TYPE_INT64_T
 186 AC_TYPE_MODE_T
 187 AC_TYPE_OFF_T
 188 AC_TYPE_PID_T
 189 AC_TYPE_SIZE_T
 190 AC_TYPE_SSIZE_T
 191 AC_TYPE_UINT16_T
 192 AC_TYPE_UINT32_T
 193 AC_TYPE_UINT64_T
 194 AC_TYPE_UINT8_T
 195
 196 # Check for ifgroupreq which is only available on BSD.
 197 AC_CHECK_TYPES([struct ifgroupreq])
 198
 199 # Check for sockaddr_storage.  On some systems, ss_len is filled out, although
 200 # this is not mandated by POSIX, and hence systems such as linux, don't have
 201 # it.
 202 AC_CHECK_TYPES([struct sockaddr_storage], [], [], [
 203 #include <sys/types.h>
 204 #include <sys/socket.h>
 205 ])
 206
 207 # Same thing as sockaddr_storage above, only now check if the member exists in
 208 # the struct as well.
 209 AC_CHECK_MEMBERS([struct sockaddr_storage.ss_len], , ,
 210         [ #include <netdb.h>
 211           #include <netinet/in.h>
 212           #include <sys/socket.h> ]
 213 )
 214
 215 AC_CHECK_MEMBERS([struct sockaddr.sa_len], , ,
 216         [ #include <netdb.h>
 217           #include <netinet/in.h>
 218           #include <sys/socket.h> ]
 219 )
 220
 221 # Both checks above will result in:
 222 #
 223 # HAVE_STRUCT_SOCKADDR_AS_LEN
 224 # SS_LEN
 225 #
 226 # Either being defined or not.
 227
 228 # Look for library needed for flock.
 229 AC_SEARCH_LIBS(flock, bsd)
 230
 231 # Checks for library functions.
 232 AC_FUNC_FORK
 233 AC_FUNC_FSEEKO
 234 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
 235 AC_FUNC_MALLOC
 236 AC_FUNC_MMAP
 237 AC_FUNC_REALLOC
 238 AC_FUNC_STRERROR_R
 239 AC_FUNC_STRNLEN
 240 AC_CHECK_FUNCS([ \
 241         dup2 \
 242         flock \
 243         getcwd \
 244         localtime_r \
 245         memchr \
 246         memmove \
 247         memset \
 248         mergesort \
 249         mkdir \
 250         munmap \
 251         nl_langinfo \
 252         realpath \
 253         regcomp \
 254         rmdir \
 255         setlocale \
 256         socket \
 257         setresgid \
 258         setresuid \
 259         setproctitle \
 260         strcasecmp \
 261         strchr \
 262         strcspn \
 263         strdup \
 264         strerror \
 265         strncasecmp \
 266         strndup \
 267         strrchr \
 268         strspn \
 269         strstr \
 270         strtol \
 271         strtoul \
 272         sysconf \
 273         wcwidth \
 274 ])
 275
 276 AM_CONDITIONAL([HAVE_SETPROCTITLE], [test "x$ac_cv_func_setproctitle" = xyes])
 277
 278 if test "x$ac_cv_func_sysconf" = xyes; then
 279         AC_DEFINE([HAVE_SYSCONF], [1], [Define to 1 if sysconf() present])
 280 fi
 281
 282 # Siphash support.
 283 AC_CHECK_FUNCS([SipHash])
 284 AM_CONDITIONAL([HAVE_SIPHASH], [test "x$ac_cv_func_SipHash" = xyes])
 285
 286 # Check for functions with a compatibility implementation.
 287 AC_REPLACE_FUNCS([ \
 288         asprintf \
 289         closefrom \
 290         explicit_bzero \
 291         fmt_scaled \
 292         freezero \
 293         getdtablecount \
 294         getline \
 295         getprogname \
 296         recallocarray \
 297         reallocarray \
 298         strlcat \
 299         strlcpy \
 300         strndup \
 301         strnlen \
 302         strsep \
 303         strtonum \
 304 ])
 305 AM_CONDITIONAL([HAVE_CLOSEFROM], [test "x$ac_cv_func_closefrom" = xyes])
 306
 307 # Always use our getopt because 1) glibc's doesn't enforce argument order 2)
 308 # musl does not set optarg to NULL for flags without arguments (although it is
 309 # not required to, but it is helpful) 3) there are probably other weird
 310 # implementations.
 311 AC_LIBOBJ(getopt)
 312
 313 # Check for b64_ntop. If we have b64_ntop, we assume b64_pton as well.
 314 AC_MSG_CHECKING(for b64_ntop)
 315         AC_LINK_IFELSE([AC_LANG_PROGRAM(
 316         [
 317                 #include <sys/types.h>
 318                 #include <netinet/in.h>
 319                 #include <resolv.h>
 320         ],
 321         [
 322                 b64_ntop(NULL, 0, NULL, 0);
 323         ])],
 324         found_b64_ntop=yes,
 325         found_b64_ntop=no
 326 )
 327 AC_MSG_RESULT($found_b64_ntop)
 328 libresolv_LIBS=""
 329 if test "x$found_b64_ntop" = xno; then
 330         AC_MSG_CHECKING(for b64_ntop with -lresolv)
 331         LIBS="-lresolv"
 332         AC_LINK_IFELSE([AC_LANG_PROGRAM(
 333                 [
 334                         #include <sys/types.h>
 335                         #include <netinet/in.h>
 336                         #include <resolv.h>
 337                 ],
 338                 [
 339                         b64_ntop(NULL, 0, NULL, 0);
 340                 ])],
 341                 found_b64_ntop=yes,
 342                 found_b64_ntop=no
 343         )
 344         AC_MSG_RESULT($found_b64_ntop)
 345         libresolv_LIBS="$LIBS"
 346 fi
 347 if test "x$found_b64_ntop" = xno; then
 348         AC_MSG_CHECKING(for b64_ntop with -lnetwork)
 349         LIBS="-lresolv -lnetwork"
 350         AC_LINK_IFELSE([AC_LANG_PROGRAM(
 351                 [
 352                         #include <sys/types.h>
 353                         #include <netinet/in.h>
 354                         #include <resolv.h>
 355                 ],
 356                 [
 357                         b64_ntop(NULL, 0, NULL, 0);
 358                 ])],
 359                 found_b64_ntop=yes,
 360                 found_b64_ntop=no
 361         )
 362         AC_MSG_RESULT($found_b64_ntop)
 363         libresolv_LIBS="$LIBS"
 364 fi
 365
 366 AM_CONDITIONAL([HAVE_B64], [test "x$found_b64_ntop" = xyes])
 367 if test "x$found_b64_ntop" = xyes; then
 368         AC_DEFINE([HAVE_B64_NTOP], [1], [define if b64_ntop is present])
 369         AC_SUBST(libresolv_LIBS)
 370 else
 371         AC_LIBOBJ(base64)
 372 fi
 373
 374 # Check the platform we're compiling on.
 375 AC_MSG_CHECKING(platform)
 376 case "$host_os" in
 377         *linux*)
 378                 AC_MSG_RESULT(linux)
 379                 PLATFORM=linux
 380                 ;;
 381         *freebsd*)
 382                 AC_MSG_RESULT(freebsd)
 383                 PLATFORM=freebsd
 384                 ;;
 385         *darwin*)
 386                 AC_MSG_RESULT(darwin)
 387                 PLATFORM=darwin
 388                 ;;
 389         *netbsd*)
 390                 AC_MSG_RESULT(netbsd)
 391                 PLATFORM=netbsd
 392                 ;;
 393         *openbsd*)
 394                 AC_MSG_RESULT(openbsd)
 395                 PLATFORM=openbsd
 396                 ;;
 397         *dragonfly*)
 398                 AC_MSG_RESULT(dragonfly)
 399                 PLATFORM=dragonflybsd
 400                 ;;
 401         *)
 402                 AC_MSG_RESULT(unknown)
 403                 PLATFORM=unknown
 404                 ;;
 405 esac
 406 AC_SUBST(PLATFORM)
 407 AM_CONDITIONAL([HOST_FREEBSD], [test "$PLATFORM" = "freebsd"])
 408 AM_CONDITIONAL([HOST_LINUX], [test "$PLATFORM" = "linux"])
 409 AM_CONDITIONAL([HOST_DARWIN], [test "$PLATFORM" = "darwin"])
 410 AM_CONDITIONAL([HOST_NETBSD], [test "$PLATFORM" = "netbsd"])
 411 AM_CONDITIONAL([HOST_OPENBSD], [test "$PLATFORM" = "openbsd"])
 412 AM_CONDITIONAL([HOST_DRAGONFLYBSD], [test "$PLATFORM" = "dragonflybsd"])
 413
 414 # On OpenBSD, these functions are already defined, yet looking for them in
 415 # this way on OpenBSD breaks <sha2.h> inclusion.
 416 # FIXME: this needs addressing.
 417 if test "x$PLATFORM" != "xopenbsd"; then
 418         AC_CHECK_FUNCS([SHA256Update])
 419 fi
 420
 421 # Look for yacc.
 422 if test "YACC_OVERRIDE" = "yes" && test -n "$YACC" \
 423         && ! command -v "$YACC" >/dev/null 2>&1; then
 424         AC_MSG_ERROR("yacc not found: $YACC")
 425 fi
 426
 427 if test x"$PLATFORM" = "xdarwin"; then
 428         # Check for and/or set HOMEBREW_PREFIX.  brew is a common way of
 429         # installing applications.  The other is MacPorts.
 430         #
 431         # Before Apple Silicon existed (M1 onward), the paths for applications
 432         # installed via homebrew was typically /usr/local.  However, with M1
 433         # onward, this changed to a different path.
 434         #
 435         # Rather than hardcode this, check for HOMEBREW_PREFIX in the
 436         # environment if it's already set, and use it.  Otherwise, check for
 437         # brew(1) and use that.  If that fails, default to /usr/local
 438         #
 439         # This also means that MacPorts should continue to work.
 440         #
 441         # But with MacPorts, we should also check --prefix, and use that if it
 442         # has been supplied.
 443         #
 444         # In both cases, the variable HOMEBREW_PREFIX is used for both.
 445         HB_PREFIX=""
 446         FOUND_BISON="no"
 447         GNUBISON=""
 448         if test -z "$HOMEBREW_PREFIX" -o "$HOMEBREW_PREFIX" = "NONE"; then
 449                 # HOMEBREW_PREFIX not set, check for brew(1)
 450                 if command -v brew >/dev/null 2>&1; then
 451                         AC_MSG_NOTICE("HOMEBREW_PREFIX set via 'brew --prefix'")
 452                         export HOMEBREW_PREFIX="$(brew --prefix)"
 453                 fi
 454
 455                 if test -z "$HOMEBREW_PREFIX" -o "$HOMEBREW_PREFIX" = "NONE"
 456                 then
 457                         # Default.
 458                         if test -z "${prefix}" -o "${prefix}" = "NONE"; then
 459                                 export HOMEBREW_PREFIX="/usr/local"
 460                                 HB_PREFIX="/usr/local"
 461                                 AC_MSG_NOTICE("HOMEBREW_PREFIX defaulting to $HB_PREFIX")
 462                         else
 463                                 HB_PREFIX="$(eval echo ${prefix})"
 464                                 if test "$HB_PREFIX" = "NONE"; then
 465                                         HB_PREFIX="/opt/local"
 466                                 else
 467                                         AC_MSG_NOTICE("HOMEBREW_PREFIX using --prefix")
 468                                 fi
 469                                 export HOMEBREW_PREFIX="$HB_PREFIX"
 470                         fi
 471                 fi
 472         fi
 473
 474         AC_MSG_NOTICE("HOMEBREW_PREFIX determined as: $HOMEBREW_PREFIX")
 475
 476         if test "$YACC_OVERRIDE" = "no" && \
 477                 ! test -x "${HOMEBREW_PREFIX}/opt/bison/bin/bison"; then
 478                 AC_MSG_WARN([
 479                              "***********************************************************
 480                              GNU Bison not found: ${HOMEBREW_PREFIX}/opt/bison/bin/bison
 481                              ***********************************************************
 482
 483                              Falling back to checking either /usr/local or \${prefix}"
 484                 ])
 485
 486                 FOUND_BISON="no"
 487                 AC_MSG_WARN("Trying ${HB_PREFIX}/opt/bison/bin/bison")
 488                 if test -x "${HB_PREFIX}/opt/bison/bin/bison"; then
 489                         export HOMEBREW_PREFIX="/usr/local"
 490                         FOUND_BISON="yes"
 491                         GNUBISON="${HB_PREFIX}/opt/bison/bin/bison"
 492                 fi
 493
 494                 if test "$FOUND_BISON" = "no"; then
 495                         HB_PREFIX="/opt/local"
 496                         AC_MSG_WARN("Trying ${HB_PREFIX}/bin/bison")
 497
 498                         if test -x "${HB_PREFIX}/bin/bison"; then
 499                                 export HOMEBREW_PREFIX="${HB_PREFIX}"
 500                                 GNUBISON="${HB_PREFIX}/bin/bison"
 501                                 FOUND_BISON="yes"
 502                         fi
 503                 fi
 504         else
 505                 FOUND_BISON="yes"
 506                 GNUBISON="${HOMEBREW_PREFIX}/opt/bison/bin/bison"
 507         fi
 508
 509         if test "$FOUND_BISON" = "no" && test "$YACC_OVERRIDE" = "no"; then
 510                 AC_MSG_ERROR("*** Couldn't find GNU BISON ***")
 511         fi
 512
 513         # Override YACC here to point to the GNU version of bison.
 514         if test "$YACC_OVERRIDE" = "yes"; then
 515                 export YACC="$YACC -y"
 516         else
 517                 AC_MSG_NOTICE("Found GNU Bison as: $GNUBISON")
 518                 export YACC="${GNUBISON} -y"
 519         fi
 520         export LDFLAGS="-L${HOMEBREW_PREFIX}/opt/ncurses/lib -L${HOMEBREW_PREFIX}/opt/openssl@3/lib $LDFLAGS"
 521         export CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/ncurses/include -I${HOMEBREW_PREFIX}/opt/openssl@3/include $CPPFLAGS"
 522         export PKG_CONFIG_PATH="${HOMEBREW_PREFIX}/opt/ncurses/lib/pkgconfig"
 523         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:${HOMEBREW_PREFIX}/opt/openssl@3/lib/pkgconfig"
 524 fi
 525
 526 # Landlock detection.
 527 AC_MSG_CHECKING([for landlock])
 528 AM_CONDITIONAL([HAVE_LINUX_LANDLOCK],
 529     [test "x$ac_cv_header_linux_landlock_h" = "xyes"])
 530 if test "x$ac_cv_header_linux_landlock_h" = "xyes"; then
 531         AC_MSG_RESULT(yes)
 532 else
 533         AC_MSG_RESULT(no)
 534 fi
 535
 536 # Clang sanitizers wrap reallocarray even if it isn't available on the target
 537 # system. When compiled it always returns NULL and crashes the program. To
 538 # detect this we need a more complicated test.
 539 AC_MSG_CHECKING([for working reallocarray])
 540 AC_RUN_IFELSE([AC_LANG_PROGRAM(
 541                 [#include <stdlib.h>],
 542                 [return (reallocarray(NULL, 1, 1) == NULL);]
 543         )],
 544         AC_MSG_RESULT(yes),
 545         [AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])],
 546         [AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])]
 547 )
 548 AC_MSG_CHECKING([for working recallocarray])
 549 AC_RUN_IFELSE([AC_LANG_PROGRAM(
 550                 [#include <stdlib.h>],
 551                 [return (recallocarray(NULL, 1, 1, 1) == NULL);]
 552         )],
 553         AC_MSG_RESULT(yes),
 554         [AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])],
 555         [AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])]
 556 )
 557
 558 # Look for imsg_init in libutil.
 559 AC_SEARCH_LIBS(imsg_init, util, found_imsg_init=yes, found_imsg_init=no)
 560 AM_CONDITIONAL([HAVE_IMSG], [test "x$found_imsg_init" = "xyes"])
 561 if test "x$found_imsg_init" = "xyes"; then
 562         AC_DEFINE([HAVE_IMSG], [1], [Define to 1 if imsg is declared in libutil])
 563         libutil_LIBS="$ac_cv_search_imsg_init"
 564         AC_SUBST(libutil_LIBS)
 565 fi
 566
 567 # libevent (for gotwebd).  Lifted from tmux.
 568 # Look for libevent. Try libevent_core or libevent with pkg-config first then
 569 # look for the library.
 570 found_libevent=no
 571 PKG_CHECK_MODULES(
 572         LIBEVENT_CORE,
 573         [libevent_core >= 2],
 574         [
 575                 libevent_CFLAGS="$LIBEVENT_CORE_CFLAGS"
 576                 libevent_LIBS="$LIBEVENT_CORE_LIBS"
 577                 AC_SUBST(libevent_CFLAGS)
 578                 AC_SUBST(libevent_LIBS)
 579                 found_libevent=yes
 580         ],
 581         found_libevent=no
 582 )
 583 if test x$found_libevent = xno; then
 584         PKG_CHECK_MODULES(
 585                 LIBEVENT,
 586                 [libevent >= 2],
 587                 [
 588                         libevent_CFLAGS="$LIBEVENT_CFLAGS"
 589                         libevent_LIBS="$LIBEVENT_LIBS"
 590                         AC_SUBST(libevent_CFLAGS)
 591                         AC_SUBST(libevent_LIBS)
 592                         found_libevent=yes
 593                 ],
 594                 found_libevent=no
 595         )
 596 fi
 597 if test x$found_libevent = xno; then
 598         AC_SEARCH_LIBS(
 599                 event_init,
 600                 [event_core event event-1.4],
 601                 found_libevent=yes,
 602                 found_libevent=no
 603         )
 604
 605         if test "x$found_libevent" = "xyes"; then
 606                 libevent_LIBS="$ac_cv_search_event_init"
 607                 AC_SUBST(libevent_LIBS)
 608         fi
 609 fi
 610
 611 if test x$found_libevent = xno; then
 612 AC_CHECK_HEADER(
 613         event2/event.h,
 614         AC_DEFINE([HAVE_EVENT2_EVENT_H], [1], [libevent2 has event.h]),
 615         [
 616                 AC_CHECK_HEADER(
 617                         event.h,
 618                         AC_DEFINE([HAVE_EVENT_H], [0], [libevent]),
 619                         found_libevent=no
 620                 )
 621         ]
 622 )
 623 fi
 624
 625 if test "x$found_libevent" = xno; then
 626         AC_MSG_ERROR("libevent not found")
 627 fi
 628
 629 AC_CHECK_FUNC([uuid_create], [found_uuid=yes], [found_uuid=no])
 630
 631 # Don't define HAVE_BSD_UUID on darwin (Apple) as this breaks the BSD API.
 632 # Instead, use the UUID implementation wrapper that's in compat/ plus uuid
 633 # ossp
 634 if test "x$found_uuid" = "xyes" -a "x$PLATFORM" != "darwin"; then
 635         AC_DEFINE([HAVE_BSD_UUID], [1], [BSD UUID])
 636 else
 637         PKG_CHECK_MODULES(
 638                 LIBUUID,
 639                 uuid,
 640                 [
 641                         libuuid_CFLAGS="$LIBUUID_CFLAGS"
 642                         libuuid_LIBS="$LIBUUID_LIBS"
 643                         AC_SUBST(libuuid_CFLAGS)
 644                         AC_SUBST(libuuid_LIBS)
 645                         found_libuuid=yes
 646                 ],
 647                 [
 648                         found_libuuid=no
 649                 ]
 650         )
 651
 652         if test "x$found_libuuid" = "xno"; then
 653                 AC_CHECK_HEADER(
 654                         uuid.h,
 655                         found_libuuid=yes,
 656                         found_libuuid=no)
 657         fi
 658 fi
 659
 660 if test "x$found_libuuid" = "xno"; then
 661         AC_MSG_ERROR("*** couldn't find uuid ***")
 662 fi
 663
 664 PKG_CHECK_MODULES(
 665         ZLIB,
 666         zlib,
 667         [
 668                 zlib_CFLAGS="$ZLIB_CFLAGS"
 669                 zlib_LIBS="$ZLIB_LIBS"
 670                 AC_SUBST(zlib_CFLAGS)
 671                 AC_SUBST(zlib_LIBS)
 672                 found_zlib=yes
 673         ],
 674         [
 675                 found_zlib=no
 676         ]
 677 )
 678
 679 if test "x$found_zlib" = "xno"; then
 680         AC_CHECK_HEADER(
 681                 zlib.h,
 682                 ,
 683                 found_zlib=no)
 684 fi
 685
 686 if test "x$found_zlib" = "xno"; then
 687         AC_MSG_ERROR("*** couldn't find zlib ***")
 688 fi
 689
 690 if test "$PLATFORM" = "linux"; then
 691         PKG_CHECK_MODULES(
 692                 LIBBSD,
 693                 libbsd-overlay,
 694                 [
 695                         libbsd_CFLAGS="$LIBBSD_CFLAGS"
 696                         libbsd_LIBS="$LIBBSD_LIBS"
 697                         AC_SUBST(libbsd_CFLAGS)
 698                         AC_SUBST(libbsd_LIBS)
 699                         AC_DEFINE([HAVE_LIBBSD], [1], [BSD UUID])
 700                 ],
 701                 [
 702                         AC_MSG_ERROR("*** couldn't find libbsd-overlay via pkg-config")
 703                 ]
 704
 705         )
 706
 707         # Add LIBBSD_{CFLAGS,LIBS} to the environment here, as libbsd puts its
 708         # header files in a non-standard location, which means the overlay for
 709         # <sys/tree.h> and <sys/queue.h> won't be found.
 710         CFLAGS="$CFLAGS $LIBBSD_CFLAGS"
 711         LIBS="$LIBS $LIBBSD_LIBS"
 712
 713         PKG_CHECK_MODULES(
 714                 LIBMD,
 715                 libmd,
 716                 [
 717                      libmd_CFLAGS="$LIBMD_CFLAGS"
 718                      libmd_LIBS="$LIBMD_LIBS"
 719                      AC_SUBST(libmd_CFLAGS)
 720                      AC_SUBST(libmd_LIBS)
 721                 ], []
 722         )
 723         CFLAGS="$CFLAGS $LIBMD_CFLAGS"
 724         LIBS="$LIBS $LIBMD_LIBS"
 725
 726 fi
 727
 728 # Look for a suitable queue.h.  We hope libbsd is enough, but that is missing
 729 # some declarations.
 730 AC_CHECK_DECL(
 731         TAILQ_CONCAT,
 732         found_queue_h=yes,
 733         found_queue_h=no,
 734         [#include <sys/queue.h>]
 735 )
 736 AC_CHECK_DECL(
 737         TAILQ_PREV,
 738         ,
 739         found_queue_h=no,
 740         [#include <sys/queue.h>]
 741 )
 742 AC_CHECK_DECL(
 743         TAILQ_FOREACH_SAFE,
 744         ,
 745         found_queue_h=no,
 746         [#include <sys/queue.h>]
 747 )
 748
 749 if test "x$found_queue_h" = xyes; then
 750         AC_DEFINE([HAVE_QUEUE_H], [1], [sys/queue.h])
 751 else
 752         AC_MSG_ERROR("*** sys/queue.h missing key defines ***)
 753 fi
 754
 755 AC_CHECK_DECL(
 756         RB_GENERATE_STATIC,
 757         found_sys_tree_h=yes,
 758         found_sys_tree_h=no,
 759         [#include <sys/tree.h>]
 760 )
 761
 762 #FIXME: May need OS-wrapping.
 763 PKG_CHECK_MODULES(
 764         LIBTLS,
 765         [libtls],
 766         [
 767                 libtls_CFLAGS="$LIBTLS_CFLAGS"
 768                 libtls_LIBS="$LIBTLS_LIBS"
 769                 AC_SUBST(libtls_CFLAGS)
 770                 AC_SUBST(libtls_LIBS)
 771         ],
 772         AC_MSG_ERROR(["*** Couldn't find libtls ***"])
 773 )
 774
 775 # Look for __progname.
 776 AC_MSG_CHECKING(for __progname)
 777 AC_LINK_IFELSE([AC_LANG_SOURCE(
 778         [
 779                 #include <stdio.h>
 780                 #include <stdlib.h>
 781                 extern char *__progname;
 782                 int main(void) {
 783                         const char *cp = __progname;
 784                         printf("%s\n", cp);
 785                         exit(0);
 786                 }
 787         ])],
 788         [AC_DEFINE([HAVE___PROGNAME], [1], [___progname]) AC_MSG_RESULT(yes)],
 789         [AC_MSG_RESULT(no)]
 790 )
 791
 792 PKG_CHECK_MODULES(
 793         LIBPANELW,
 794         panelw,
 795         LIBPANELW_LIBS="$LIBPANELW_LIBS"
 796         found_panel=yes,
 797         found_panel=no
 798 )
 799
 800 if test "x$found_panel" = "xno"; then
 801 PKG_CHECK_MODULES(
 802         LIBPANELW,
 803         gnupanelw,
 804         [
 805                 LIBPANELW_LIBS="$LIBPANELW_LIBS"
 806                 found_panel=yes
 807         ],
 808         found_panel=no
 809 )
 810 fi
 811
 812 if test "x$found_panel" = "xno"; then
 813 PKG_CHECK_MODULES(
 814         LIBPANELW,
 815         panel,
 816         [
 817                 LIBPANELW_LIBS="$LIBPANELW_LIBS"
 818                 found_panel=yes
 819         ],
 820         found_panel=no
 821 )
 822 fi
 823
 824 if test "x$found_panel" = "xno"; then
 825         AC_CHECK_LIB(panelw, update_panels, [],
 826                 AC_MSG_ERROR([ "*** panelw not found for ncurses. ***"]),
 827                 [-lncurses]
 828         )
 829
 830 fi
 831
 832 PKG_CHECK_MODULES(
 833         LIBNCURSES,
 834         ncursesw,
 835         found_ncurses=yes,
 836         found_ncurses=no
 837 )
 838 if test "x$found_ncurses" = xyes; then
 839         libncurses_CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS"
 840         libncurses_LIBS="$LIBNCURSES_LIBS $LIBTINFO_LIBS $LIBPANELW_LIBS"
 841         AC_SUBST(libncurses_CFLAGS)
 842         AC_SUBST(libncurses_LIBS)
 843 else
 844         AC_SEARCH_LIBS(
 845                 setupterm,
 846                 found_ncurses=yes,
 847                 found_ncurses=no
 848         )
 849         if test "x$found_ncurses" = xyes; then
 850                 AC_CHECK_HEADER(
 851                         ncurses.h,
 852                         libncurses_CFLAGS="$LIBPANELW_CFLAGS $LIBPANEL_CFLAGS"
 853                         libncurses_LIBS="$LIBPANELW_LIBS -lncursesw"
 854                         AC_SUBST(libncurses_CFLAGS)
 855                         AC_SUBST(libncurses_LIBS)
 856                 )
 857         fi
 858 fi
 859 if test "x$found_ncurses" = xyes; then
 860         AC_DEFINE([HAVE_NCURSES_H], [1], [NCurses])
 861 else
 862         # No ncurses, try curses.
 863         AC_CHECK_FUNC(
 864                 setupterm,
 865                 found_curses=yes,
 866                 found_curses=no
 867         )
 868         AC_CHECK_HEADER(
 869                 curses.h,
 870                 found_curses=yes,
 871                 found_curses=no)
 872         if test "x$found_curses" = xyes; then
 873                 libncurses_CFLAGS="$LIBPANELW_CFLAGS $LIBPANEL_CFLAGS"
 874                 libncurses_LIBS="$LIBPANELW_LIBS -lncursesw -lpanelw"
 875                 AC_SUBST(libncurses_CFLAGS)
 876                 AC_SUBST(libncurses_LIBS)
 877                 AC_DEFINE([HAVE_CURSES_H], [1], [Curses_h])
 878         else
 879                 AC_MSG_ERROR("curses not found")
 880         fi
 881 fi
 882
 883 # Save our CFLAGS/CPPFLAGS/LDFLAGS for the Makefile and restore the old user
 884 # variables.
 885 AC_SUBST(AM_CPPFLAGS)
 886 CPPFLAGS="$SAVED_CPPFLAGS"
 887 AC_SUBST(AM_CFLAGS)
 888 CFLAGS="$SAVED_CFLAGS"
 889 AC_SUBST(AM_LDFLAGS)
 890 LDFLAGS="$SAVED_LDFLAGS"
 891
 892 # LIBS is designed to accumulate library dependencies as checks for them are
 893 # peformed, so that this can be included directly to ld(1).
 894 #
 895 # However, this hinders the splitting up of the library dependencies so that
 896 # they're targetted just where they're needed.  Flatting LIBS here ensures
 897 # that this happens appropriately.
 898 LIBS=""
 899
 900 AH_BOTTOM([#include "got_compat2.h"])
 901
 902 AM_CONDITIONAL([CVG_ENABLED], [test "x$enable_cvg" = xyes])
 903
 904 AC_CONFIG_FILES([Makefile
 905                  compat/Makefile
 906                  gitwrapper/Makefile
 907                  got/Makefile
 908                  gotadmin/Makefile
 909                  gotctl/Makefile
 910                  gotd/Makefile
 911                  gotd/libexec/Makefile
 912                  gotd/libexec/got-notify-email/Makefile
 913                  gotd/libexec/got-notify-http/Makefile
 914                  gotsh/Makefile
 915                  gotwebd/Makefile
 916                  libexec/Makefile
 917                  libexec/got-fetch-http/Makefile
 918                  libexec/got-fetch-pack/Makefile
 919                  libexec/got-index-pack/Makefile
 920                  libexec/got-read-blob/Makefile
 921                  libexec/got-read-commit/Makefile
 922                  libexec/got-read-gitconfig/Makefile
 923                  libexec/got-read-gotconfig/Makefile
 924                  libexec/got-read-object/Makefile
 925                  libexec/got-read-pack/Makefile
 926                  libexec/got-read-patch/Makefile
 927                  libexec/got-read-tag/Makefile
 928                  libexec/got-read-tree/Makefile
 929                  libexec/got-send-pack/Makefile
 930                  tog/Makefile
 931                  Makefile.common:Makefile.common.in])
 932
 933 if test "x$enable_cvg" = "xyes"; then
 934         AC_CONFIG_FILES([cvg/Makefile])
 935 fi
 936
 937 AC_OUTPUT
 938
 939 executables="$(eval echo ${exec_prefix}/bin)"
 940 helpers="$(eval echo ${libexecdir})"
 941 manpages="$(eval echo ${mandir})"
 942 gotdep="$GOTD_EMPTY_PATHC"
 943 gotgwlep="$GITWRAPPER_LIBEXEC_PATHC"
 944
 945 if test -z "$enable_cvg"; then
 946         enable_cvg="no"
 947 fi
 948
 949 if test -z "$gotdep"; then
 950         gotdep="N/A"
 951 fi
 952
 953 if test -z "$gotgwlep"; then
 954         gotgwlep="N/A"
 955 fi
 956
 957 echo "
 958 Configured got-portable with:
 959
 960  Version:      $VERSION
 961
 962  Prefix:           ${prefix}
 963  Executables:      ${executables}
 964  Bison:            $YACC
 965  CFlags:           $CFLAGS
 966  cvg:              ${enable_cvg}
 967  Gotd:
 968    Empty Path:     ${gotdep}
 969    Gitwrapper:     ${gotgwlep}
 970  Helpers:          ${helpers}
 971  Man pages:        ${manpages}
 972 "