diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 646 |
1 files changed, 646 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac new file mode 100644 index 00000000..ffc022a5 --- /dev/null +++ b/configure.ac @@ -0,0 +1,646 @@ +# configure.ac + +AC_INIT(tmux, master) +AC_PREREQ([2.60]) + +AC_CONFIG_AUX_DIR(etc) +AC_CONFIG_LIBOBJ_DIR(compat) +AM_INIT_AUTOMAKE([foreign subdir-objects]) + +AC_CANONICAL_HOST + +# When CFLAGS isn't set at this stage and gcc is detected by the macro below, +# autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an +# empty default. +: ${CFLAGS=""} + +# Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because +# AC_CHECK_HEADER doesn't give us any other way to update the include +# paths. But for Makefile.am we want to use AM_CPPFLAGS and friends. +SAVED_CFLAGS="$CFLAGS" +SAVED_CPPFLAGS="$CPPFLAGS" +SAVED_LDFLAGS="$LDFLAGS" + +# Set up the compiler in two different ways and say yes we may want to install. +AC_PROG_CC +AM_PROG_CC_C_O +AC_PROG_CC_C99 +AC_PROG_CPP +AC_PROG_EGREP +AC_PROG_INSTALL +PKG_PROG_PKG_CONFIG +AC_USE_SYSTEM_EXTENSIONS + +# Default tmux.conf goes in /etc not ${prefix}/etc. +test "$sysconfdir" = '${prefix}/etc' && sysconfdir=/etc + +# Is this --enable-debug? +test "x$VERSION" = xmaster && enable_debug=yes +AC_ARG_ENABLE( + debug, + AC_HELP_STRING(--enable-debug, enable debug build flags), +) +AM_CONDITIONAL(IS_DEBUG, test "x$enable_debug" = xyes) + +# Is this a static build? +AC_ARG_ENABLE( + static, + AC_HELP_STRING(--enable-static, create a static build) +) +if test "x$enable_static" = xyes; then + test "x$PKG_CONFIG" != x && PKG_CONFIG="$PKG_CONFIG --static" + AM_LDFLAGS="-static $AM_LDFLAGS" + LDFLAGS="$AM_LDFLAGS $SAVED_LDFLAGS" +fi + +# Is this gcc? +AM_CONDITIONAL(IS_GCC, test "x$GCC" = xyes) + +# Is this Sun CC? +AC_EGREP_CPP( + yes, + [ + #ifdef __SUNPRO_C + yes + #endif + ], + found_suncc=yes, + found_suncc=no +) +AM_CONDITIONAL(IS_SUNCC, test "x$found_suncc" = xyes) + +# Check for various headers. Alternatives included from compat.h. +AC_CHECK_HEADERS([ \ + bitstring.h \ + dirent.h \ + fcntl.h \ + inttypes.h \ + libutil.h \ + ndir.h \ + paths.h \ + pty.h \ + stdint.h \ + sys/dir.h \ + sys/ndir.h \ + sys/tree.h \ + util.h \ +]) + +# Look for library needed for flock. +AC_SEARCH_LIBS(flock, bsd) + +# Check for functions that are replaced or omitted. +AC_CHECK_FUNCS([ \ + dirfd \ + flock \ + prctl \ + sysconf \ +]) + +# Check for functions with a compatibility implementation. +AC_REPLACE_FUNCS([ \ + asprintf \ + cfmakeraw \ + closefrom \ + explicit_bzero \ + fgetln \ + freezero \ + getdtablecount \ + getprogname \ + recallocarray \ + reallocarray \ + setenv \ + setproctitle \ + strcasestr \ + strlcat \ + strlcpy \ + strndup \ + strsep \ + strtonum \ +]) +AC_FUNC_STRNLEN + +# Look for clock_gettime. Must come before event_init. +AC_SEARCH_LIBS(clock_gettime, rt) + +# Look for libevent. +PKG_CHECK_MODULES( + LIBEVENT, + libevent, + [ + AM_CFLAGS="$LIBEVENT_CFLAGS $AM_CFLAGS" + CFLAGS="$AM_CFLAGS $SAVED_CFLAGS" + LIBS="$LIBEVENT_LIBS $LIBS" + found_libevent=yes + ], + [ + AC_SEARCH_LIBS( + event_init, + [event event-1.4 event2], + found_libevent=yes, + found_libevent=no + ) + ] +) +AC_CHECK_HEADER( + event.h, + , + found_libevent=no +) +if test "x$found_libevent" = xno; then + AC_MSG_ERROR("libevent not found") +fi + +# Look for ncurses. +PKG_CHECK_MODULES( + LIBTINFO, + tinfo, + found_ncurses=yes, + found_ncurses=no +) +if test "x$found_ncurses" = xno; then + PKG_CHECK_MODULES( + LIBNCURSES, + ncurses, + found_ncurses=yes, + found_ncurses=no + ) +fi +if test "x$found_ncurses" = xno; then + PKG_CHECK_MODULES( + LIBNCURSES, + ncursesw, + found_ncurses=yes, + found_ncurses=no + ) +fi +if test "x$found_ncurses" = xyes; then + CPPFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $CPPFLAGS" + LIBS="$LIBNCURSES_LIBS $LIBTINFO_LIBS $LIBS" +else + # pkg-config didn't work, try ncurses. + AC_CHECK_LIB( + tinfo, + setupterm, + found_ncurses=yes, + found_ncurses=no + ) + if test "x$found_ncurses" = xno; then + AC_CHECK_LIB( + ncurses, + setupterm, + found_ncurses=yes, + found_ncurses=no + ) + fi + if test "x$found_ncurses" = xyes; then + AC_CHECK_HEADER( + ncurses.h, + LIBS="$LIBS -lncurses", + found_ncurses=no) + fi +fi +if test "x$found_ncurses" = xyes; then + AC_DEFINE(HAVE_NCURSES_H) +else + # No ncurses, try curses. + AC_CHECK_LIB( + curses, + setupterm, + found_curses=yes, + found_curses=no + ) + AC_CHECK_HEADER( + curses.h, + , + found_curses=no) + if test "x$found_curses" = xyes; then + LIBS="$LIBS -lcurses" + AC_DEFINE(HAVE_CURSES_H) + else + AC_MSG_ERROR("curses not found") + fi +fi + +# Look for utempter. +AC_ARG_ENABLE( + utempter, + AC_HELP_STRING(--enable-utempter, use utempter if it is installed) +) +if test "x$enable_utempter" = xyes; then + AC_CHECK_HEADER(utempter.h, enable_utempter=yes, enable_utempter=no) + if test "x$enable_utempter" = xyes; then + AC_SEARCH_LIBS( + utempter_add_record, + utempter, + enable_utempter=yes, + enable_utempter=no + ) + fi + if test "x$enable_utempter" = xyes; then + AC_DEFINE(HAVE_UTEMPTER) + else + AC_MSG_ERROR("utempter not found") + fi +fi + +# Look for utf8proc. +AC_ARG_ENABLE( + utf8proc, + AC_HELP_STRING(--enable-utf8proc, use utf8proc if it is installed) +) +if test "x$enable_utf8proc" = xyes; then + AC_CHECK_HEADER(utf8proc.h, enable_utf8proc=yes, enable_utf8proc=no) + if test "x$enable_utf8proc" = xyes; then + AC_SEARCH_LIBS( + utf8proc_charwidth, + utf8proc, + enable_utf8proc=yes, + enable_utf8proc=no + ) + fi + if test "x$enable_utf8proc" = xyes; then + AC_DEFINE(HAVE_UTF8PROC) + else + AC_MSG_ERROR("utf8proc not found") + fi +fi +AM_CONDITIONAL(HAVE_UTF8PROC, [test "x$enable_utf8proc" = xyes]) + +# Check for b64_ntop. If we have b64_ntop, we assume b64_pton as well. +AC_MSG_CHECKING(for b64_ntop) +AC_TRY_LINK( + [ + #include <sys/types.h> + #include <netinet/in.h> + #include <resolv.h> + ], + [b64_ntop(NULL, 0, NULL, 0);], + found_b64_ntop=yes, + found_b64_ntop=no +) +if test "x$found_b64_ntop" = xno; then + AC_MSG_RESULT(no) + + AC_MSG_CHECKING(for b64_ntop with -lresolv) + LIBS="$LIBS -lresolv" + AC_TRY_LINK( + [ + #include <sys/types.h> + #include <netinet/in.h> + #include <resolv.h> + ], + [b64_ntop(NULL, 0, NULL, 0);], + found_b64_ntop=yes, + found_b64_ntop=no + ) + if test "x$found_b64_ntop" = xno; then + AC_MSG_RESULT(no) + fi +fi +if test "x$found_b64_ntop" = xyes; then + AC_DEFINE(HAVE_B64_NTOP) + AC_MSG_RESULT(yes) +else + AC_LIBOBJ(base64) +fi + +# Look for networking libraries. +AC_SEARCH_LIBS(inet_ntoa, nsl) +AC_SEARCH_LIBS(socket, socket) +AC_CHECK_LIB(xnet, socket) + +# Check for CMSG_DATA. Some platforms require _XOPEN_SOURCE_EXTENDED (for +# example see xopen_networking(7) on HP-UX). +XOPEN_DEFINES= +AC_MSG_CHECKING(for CMSG_DATA) +AC_EGREP_CPP( + yes, + [ + #include <sys/socket.h> + #ifdef CMSG_DATA + yes + #endif + ], + found_cmsg_data=yes, + found_cmsg_data=no +) +AC_MSG_RESULT($found_cmsg_data) +if test "x$found_cmsg_data" = xno; then + AC_MSG_CHECKING(if CMSG_DATA needs _XOPEN_SOURCE_EXTENDED) + AC_EGREP_CPP( + yes, + [ + #define _XOPEN_SOURCE 1 + #define _XOPEN_SOURCE_EXTENDED 1 + #include <sys/socket.h> + #ifdef CMSG_DATA + yes + #endif + ], + found_cmsg_data=yes, + found_cmsg_data=no + ) + AC_MSG_RESULT($found_cmsg_data) + if test "x$found_cmsg_data" = xyes; then + XOPEN_DEFINES="-D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED" + else + AC_MSG_ERROR("CMSG_DATA not found") + fi +fi +AC_SUBST(XOPEN_DEFINES) + +# Look for err and friends in err.h. +AC_CHECK_FUNC(err, found_err_h=yes, found_err_h=no) +AC_CHECK_FUNC(errx, , found_err_h=no) +AC_CHECK_FUNC(warn, , found_err_h=no) +AC_CHECK_FUNC(warnx, , found_err_h=no) +if test "x$found_err_h" = xyes; then + AC_CHECK_HEADER(err.h, , found_err_h=no) +else + AC_LIBOBJ(err) +fi + +# Look for imsg_init in libutil. +AC_SEARCH_LIBS(imsg_init, util, found_imsg_init=yes, found_imsg_init=no) +if test "x$found_imsg_init" = xyes; then + AC_DEFINE(HAVE_IMSG) +else + AC_LIBOBJ(imsg) + AC_LIBOBJ(imsg-buffer) +fi + +# Look for daemon, compat/daemon.c used if missing. Solaris 10 has it in +# libresolv, but no declaration anywhere, so check for declaration as well as +# function. +AC_CHECK_FUNC(daemon, found_daemon=yes, found_daemon=no) +AC_CHECK_DECL( + daemon, + , + found_daemon=no, + [ + #include <stdlib.h> + #include <unistd.h> + ] +) +if test "x$found_daemon" = xyes; then + AC_DEFINE(HAVE_DAEMON) +else + AC_LIBOBJ(daemon) +fi + +# Look for stravis, compat/{vis,unvis}.c used if missing. +AC_CHECK_FUNC(stravis, found_stravis=yes, found_stravis=no) +if test "x$found_stravis" = xyes; then + AC_MSG_CHECKING(if strnvis is broken) + AC_EGREP_HEADER([strnvis\(char \*, const char \*, size_t, int\)], + vis.h, + AC_MSG_RESULT(no), + [found_stravis=no]) + if test "x$found_stravis" = xno; then + AC_MSG_RESULT(yes) + fi +fi +if test "x$found_stravis" = xyes; then + AC_CHECK_DECL( + VIS_DQ, + , + found_stravis=no, + [ + #include <stdlib.h> + #include <vis.h> + ] +) +fi +if test "x$found_stravis" = xyes; then + AC_DEFINE(HAVE_VIS) +else + AC_LIBOBJ(vis) + AC_LIBOBJ(unvis) +fi + +# Look for getopt. glibc's getopt does not enforce argument order and the ways +# of making it do so are stupid, so just use our own instead. +AC_CHECK_FUNC(getopt, found_getopt=yes, found_getopt=no) +if test "x$found_getopt" != xno; then + AC_MSG_CHECKING(if getopt is suitable) + AC_EGREP_CPP( + yes, + [ + #include <features.h> + #ifdef __GLIBC__ + yes + #endif + ], + [ + found_getopt=no + AC_MSG_RESULT(no) + ], + AC_MSG_RESULT(yes)) +fi +if test "x$found_getopt" != xno; then + AC_CHECK_DECLS( + [optarg, optind, optreset], + , + found_getopt=no, + [ + #include <unistd.h> + ]) +fi +if test "x$found_getopt" != xno; then + AC_DEFINE(HAVE_GETOPT) +else + AC_LIBOBJ(getopt) +fi + +# Look for fparseln in libutil. +AC_SEARCH_LIBS(fparseln, util, found_fparseln=yes, found_fparseln=no) +if test "x$found_fparseln" = xyes; then + AC_DEFINE(HAVE_FPARSELN) +else + AC_LIBOBJ(fparseln) +fi + +# Look for fdforkpty and forkpty in libutil. +AC_SEARCH_LIBS(fdforkpty, util, found_fdforkpty=yes, found_fdforkpty=no) +if test "x$found_fdforkpty" = xyes; then + AC_DEFINE(HAVE_FDFORKPTY) +else + AC_LIBOBJ(fdforkpty) +fi +AC_SEARCH_LIBS(forkpty, util, found_forkpty=yes, found_forkpty=no) +if test "x$found_forkpty" = xyes; then + AC_DEFINE(HAVE_FORKPTY) +fi +AM_CONDITIONAL(NEED_FORKPTY, test "x$found_forkpty" = xno) + +# Look for a suitable queue.h. +AC_CHECK_DECL( + TAILQ_CONCAT, + found_queue_h=yes, + found_queue_h=no, + [#include <sys/queue.h>] +) +AC_CHECK_DECL( + TAILQ_PREV, + found_queue_h=yes, + found_queue_h=no, + [#include <sys/queue.h>] +) +AC_CHECK_DECL( + TAILQ_REPLACE, + , + found_queue_h=no, + [#include <sys/queue.h>] +) +if test "x$found_queue_h" = xyes; then + AC_DEFINE(HAVE_QUEUE_H) +fi + +# Look for __progname. +AC_MSG_CHECKING(for __progname) +AC_LINK_IFELSE([AC_LANG_SOURCE( + [ + #include <stdio.h> + #include <stdlib.h> + extern char *__progname; + int main(void) { + const char *cp = __progname; + printf("%s\n", cp); + exit(0); + } + ])], + [AC_DEFINE(HAVE___PROGNAME) AC_MSG_RESULT(yes)], + AC_MSG_RESULT(no) +) + +# Look for program_invocation_short_name. +AC_MSG_CHECKING(for program_invocation_short_name) +AC_LINK_IFELSE([AC_LANG_SOURCE( + [ + #include <errno.h> + #include <stdio.h> + #include <stdlib.h> + int main(void) { + const char *cp = program_invocation_short_name; + printf("%s\n", cp); + exit(0); + } + ])], + [AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME) AC_MSG_RESULT(yes)], + AC_MSG_RESULT(no) +) + +# Look for prctl(PR_SET_NAME). +AC_CHECK_DECL( + PR_SET_NAME, + AC_DEFINE(HAVE_PR_SET_NAME), + , + [#include <sys/prctl.h>] +) + +# Look for fcntl(F_CLOSEM). +AC_CHECK_DECL( + F_CLOSEM, + AC_DEFINE(HAVE_FCNTL_CLOSEM), + , + [#include <fcntl.h>] +) + +# Look for /proc/$$. +AC_MSG_CHECKING(for /proc/\$\$) +if test -d /proc/$$; then + AC_DEFINE(HAVE_PROC_PID) + AC_MSG_RESULT(yes) +else + AC_MSG_RESULT(no) +fi + +# Man page defaults to mdoc. +MANFORMAT=mdoc +AC_SUBST(MANFORMAT) + +# Figure out the platform. +AC_MSG_CHECKING(platform) +case "$host_os" in + *aix*) + AC_MSG_RESULT(aix) + PLATFORM=aix + ;; + *darwin*) + AC_MSG_RESULT(darwin) + PLATFORM=darwin + # + # OS X CMSG_FIRSTHDR is broken, so redefine it with a working + # one. daemon works but has some stupid side effects, so use + # our internal version which has a workaround. + # + AC_DEFINE(BROKEN_CMSG_FIRSTHDR) + AC_LIBOBJ(daemon) + AC_LIBOBJ(daemon-darwin) + ;; + *dragonfly*) + AC_MSG_RESULT(dragonfly) + PLATFORM=dragonfly + ;; + *linux*) + AC_MSG_RESULT(linux) + PLATFORM=linux + ;; + *freebsd*) + AC_MSG_RESULT(freebsd) + PLATFORM=freebsd + ;; + *netbsd*) + AC_MSG_RESULT(netbsd) + PLATFORM=netbsd + ;; + *openbsd*) + AC_MSG_RESULT(openbsd) + PLATFORM=openbsd + ;; + *sunos*) + AC_MSG_RESULT(sunos) + PLATFORM=sunos + ;; + *solaris*) + AC_MSG_RESULT(sunos) + PLATFORM=sunos + MANFORMAT=man + ;; + *hpux*) + AC_MSG_RESULT(hpux) + PLATFORM=hpux + ;; + *cygwin*) + AC_MSG_RESULT(cygwin) + PLATFORM=cygwin + ;; + *) + AC_MSG_RESULT(unknown) + PLATFORM=unknown + ;; +esac +AC_SUBST(PLATFORM) +AM_CONDITIONAL(IS_AIX, test "x$PLATFORM" = xaix) +AM_CONDITIONAL(IS_DARWIN, test "x$PLATFORM" = xdarwin) +AM_CONDITIONAL(IS_DRAGONFLY, test "x$PLATFORM" = xdragonfly) +AM_CONDITIONAL(IS_LINUX, test "x$PLATFORM" = xlinux) +AM_CONDITIONAL(IS_FREEBSD, test "x$PLATFORM" = xfreebsd) +AM_CONDITIONAL(IS_NETBSD, test "x$PLATFORM" = xnetbsd) +AM_CONDITIONAL(IS_OPENBSD, test "x$PLATFORM" = xopenbsd) +AM_CONDITIONAL(IS_SUNOS, test "x$PLATFORM" = xsunos) +AM_CONDITIONAL(IS_HPUX, test "x$PLATFORM" = xhpux) +AM_CONDITIONAL(IS_UNKNOWN, test "x$PLATFORM" = xunknown) + +# Save our CFLAGS/CPPFLAGS/LDFLAGS for the Makefile and restore the old user +# variables. +AC_SUBST(AM_CPPFLAGS) +CPPFLAGS="$SAVED_CPPFLAGS" +AC_SUBST(AM_CFLAGS) +CFLAGS="$SAVED_CFLAGS" +AC_SUBST(AM_LDFLAGS) +LDFLAGS="$SAVED_LDFLAGS" + +# autoconf should create a Makefile. +AC_OUTPUT(Makefile) |