dnl $Id: configure.in 590 2007-07-31 02:38:16Z dhiebert $dnl	Copyright (c) 1996-2002, Darren Hiebertdnldnl	This source code is released for free distribution under the termsdnl	of the GNU General Public License.dnl	Process this file with autoconf to produce a configure script.AC_PREREQ(1.12)AC_INIT(ctags.h)AC_CONFIG_HEADER(config.h)dnl Report system infodnl ------------------program_name=[`grep 'PROGRAM_NAME  *"' ctags.h | sed -e 's/.*"\([^"]*\)".*/\1/'`]program_version=[`grep 'PROGRAM_VERSION  *"' ctags.h | sed -e 's/.*"\([^"]*\)".*/\1/'`]echo "$program_name, version $program_version"uname -mrsv 2>/dev/nulldnl Define convenience macrosdnl -------------------------dnl CHECK_HEADER_DEFINE(LABEL, HEADER [,ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ] ])AC_DEFUN(CHECK_HEADER_DEFINE,[	AC_MSG_CHECKING(if $1 is defined in $2)	AC_EGREP_CPP(yes,[#include <$2>#ifdef $1  yes#endif], [	AC_MSG_RESULT(yes)	$3], [	AC_MSG_RESULT(no)	$4]) ])dnl Checks for configuration optionsdnl --------------------------------AC_ARG_WITH(posix-regex,[  --with-posix-regex      use Posix regex interface, if available])AC_ARG_WITH(readlib,[  --with-readlib          include readtags library object during install])dnl AC_ARG_WITH(perl-regex,dnl [  --with-perl-regex       use Perl pcre interface, if available])AC_ARG_ENABLE(etags,[  --enable-etags          enable the installation of links for etags])AC_ARG_ENABLE(extended-format,[  --disable-extended-format                          disable extension flags; use original ctags file                          format only],	AC_DEFINE(DEFAULT_FILE_FORMAT, 1), AC_DEFINE(DEFAULT_FILE_FORMAT, 2))AC_ARG_ENABLE(external-sort,[  --disable-external-sort use internal sort algorithm instead of sort program])AC_ARG_ENABLE(custom-config,[  --enable-custom-config=FILE                          enable custom config file for site-wide defaults])AC_ARG_ENABLE(macro-patterns,[  --enable-macro-patterns use patterns as default method to locate macros                          instead of line numbers])AC_ARG_ENABLE(maintainer-mode,[  --enable-maintainer-mode                          use maintainer makefile])AC_ARG_ENABLE(shell-globbing,[  --enable-shell-globbing=DIR                          does shell expand wildcards (yes|no)? [yes]])AC_ARG_ENABLE(tmpdir,[  --enable-tmpdir=DIR     default directory for temporary files [ARG=/tmp]],	tmpdir_specified=yes)dnl Process configuration optionsdnl -----------------------------if test "$enable_maintainer_mode" = yes ; then	AC_MSG_RESULT(enabling maintainer mode)fiinstall_targets="install-ctags"AC_MSG_CHECKING(whether to install link to etags)if test yes = "$enable_etags"; then	AC_MSG_RESULT(yes)	install_targets="$install_targets install-etags"else	AC_MSG_RESULT(no)fiAC_MSG_CHECKING(whether to install readtags object file)if test yes = "$with_readlib"; then	AC_MSG_RESULT(yes)	install_targets="$install_targets install-lib"else	AC_MSG_RESULT(no)fiAC_SUBST(install_targets)if test "$enable_custom_config" = no -o "$enable_custom_config" = yes ; then	AC_MSG_RESULT(no name supplied for custom configuration file)elif test -n "$enable_custom_config" ; then	AC_DEFINE_UNQUOTED(CUSTOM_CONFIGURATION_FILE, "$enable_custom_config")	AC_MSG_RESULT($enable_custom_config will be used as custom configuration file)fiif test "$enable_macro_patterns" = yes ; then	AC_DEFINE(MACROS_USE_PATTERNS)	AC_MSG_RESULT(tag file will use patterns for macros by default)fidnl Checks for programsdnl -------------------AC_PROG_CCcase `uname` in	HP-UX)		AC_MSG_CHECKING(HP-UX native compiler)		if test "$CC" = "cc"; then			AC_MSG_RESULT(yes; adding compiler options for ANSI support)			CFLAGS="$CFLAGS -Aa -D_HPUX_SOURCE"		else			AC_MSG_RESULT(no)		fi		;;	SunOS)		if uname -r | grep '5\.' >/dev/null 2>&1; then			AC_MSG_CHECKING(Solaris native compiler)			if test "$CC" = "cc" -a "`which cc`" = "/usr/ucb/cc"; then				AC_MSG_RESULT(yes; adding compiler option for ANSI support)				CC="$CC -Xa"			else				AC_MSG_RESULT(no)			fi		fi		;;esacAC_PROG_LN_SAC_CHECK_PROG(STRIP, strip, strip, :)dnl Checks for operating environmentdnl --------------------------------dnl Check for temporary directoryAC_MSG_CHECKING(directory to use for temporary files)if test -n "$enable_tmpdir"; then	tmpdir="$enable_tmpdir"elif test -n "$TMPDIR"; then	tmpdir="$TMPDIR"elif test -n "$TMPDIR"; then	tmpdir="$TMPDIR"elif test -n "$TMP"; then	tmpdir="$TMP"elif test -n "$TEMP"; then	tmpdir="$TEMP"elif test -d "c:/"; then	tmpdir="c:/"else	tmpdir="/tmp"fiif test -d $tmpdir ; then	AC_MSG_RESULT($tmpdir)	AC_DEFINE_UNQUOTED(TMPDIR, "$tmpdir")else	AC_MSG_ERROR($tmpdir does not exist)fidnl Check whether system supports #! scriptsAC_SYS_INTERPRETERif test yes = "$interpval"; then	AC_DEFINE(SYS_INTERPRETER)fidnl Test for case-insensitive filenamesAC_MSG_CHECKING(for case-insensitive filenames)touch conftest.cifif test -f CONFTEST.CIF; then	AC_MSG_RESULT(yes)	AC_DEFINE(CASE_INSENSITIVE_FILENAMES)else	AC_MSG_RESULT(no)firm -f conftest.cifAC_MSG_CHECKING(selected sort method)if test no = "$enable_external_sort"; then	AC_MSG_RESULT(simple internal algorithm)else	AC_MSG_RESULT(external sort utility)	enable_external_sort=no    AC_CHECK_PROG(sort_found, sort, yes, no)	if test "$sort_found" = yes ; then		AC_MSG_CHECKING(if sort accepts our command line)		touch ${tmpdir}/sort.test		sort -u -f -o ${tmpdir}/sort.test ${tmpdir}/sort.test 1>/dev/null 2>&1		if test $? -ne 0 ; then			AC_MSG_RESULT(no)		else			AC_MSG_RESULT(yes)			AC_DEFINE(EXTERNAL_SORT)			enable_external_sort=yes		fi		rm -f ${tmpdir}/sort.test    fifiif test "$enable_external_sort" != yes ; then	AC_MSG_RESULT(using internal sort algorithm as fallback)fidnl Checks for header filesdnl -----------------------AC_CHECK_HEADERS(dirent.h fcntl.h fnmatch.h stat.h stdlib.h string.h)AC_CHECK_HEADERS(time.h types.h unistd.h)AC_CHECK_HEADERS(sys/dir.h sys/stat.h sys/times.h sys/types.h)dnl Checks for header file macrosdnl -----------------------------CHECK_HEADER_DEFINE(L_tmpnam, stdio.h,, AC_DEFINE(L_tmpnam, 20))CHECK_HEADER_DEFINE(INT_MAX, limits.h,,	CHECK_HEADER_DEFINE(MAXINT, limits.h,		AC_DEFINE(INT_MAX, MAXINT), AC_DEFINE(INT_MAX, 32767)))dnl Checks for typedefsdnl -------------------AC_TYPE_SIZE_TAC_TYPE_OFF_TAC_MSG_CHECKING(for fpos_t)AC_EGREP_HEADER(fpos_t, stdio.h, AC_MSG_RESULT(yes),[	AC_MSG_RESULT(no)	AC_DEFINE(fpos_t, long)])AC_MSG_CHECKING(for clock_t)AC_EGREP_HEADER(clock_t, time.h, AC_MSG_RESULT(yes),[	AC_MSG_RESULT(no)	AC_DEFINE(clock_t, long)])dnl Checks for compiler characteristicsdnl -----------------------------------dnl AC_CYGWINdnl AC_MINGW32AC_C_CONSTAC_OBJEXTAC_EXEEXTAC_MSG_CHECKING(if struct stat contains st_ino)AC_TRY_COMPILE([#include <sys/stat.h>], [	struct stat st;	stat(".", &st);	if (st.st_ino > 0)		exit(0);], have_st_ino=yes, have_st_ino=no)AC_MSG_RESULT($have_st_ino)if test yes = "$have_st_ino"; then	AC_DEFINE(HAVE_STAT_ST_INO)fidnl Checks for library functionsdnl ----------------------------AC_CHECK_FUNCS(fnmatch)AC_CHECK_FUNCS(strstr)AC_CHECK_FUNCS(strcasecmp stricmp, break)AC_CHECK_FUNCS(strncasecmp strnicmp, break)AC_CHECK_FUNCS(fgetpos, have_fgetpos=yes)dnl SEEK_SET should be in stdio.h, but may be in unistd.h on SunOS 4.1.xif test "$have_fgetpos" != yes ; then	CHECK_HEADER_DEFINE(SEEK_SET, stdio.h,,		CHECK_HEADER_DEFINE(SEEK_SET, unistd.h,,			AC_DEFINE(SEEK_SET, 0)))fiAC_CHECK_FUNCS(mkstemp, have_mkstemp=yes)if test "$have_mkstemp" != yes ; then	AC_CHECK_FUNCS(tempnam, have_tempnam=yes)fiif test "$have_mkstemp" != yes -a "$have_tempnam" != yes; then	AC_CHECK_FUNCS(chmod)	if test "$tmpdir_specified" = yes ; then		AC_MSG_RESULT(use of tmpnam overrides temporary directory selection)	fifiAC_CHECK_FUNCS(opendir findfirst _findfirst, break)AC_CHECK_FUNCS(strerror)AC_CHECK_FUNCS(clock times, break)AC_CHECK_FUNCS(remove, have_remove=yes,	CHECK_HEADER_DEFINE(remove, unistd.h,, AC_DEFINE(remove, unlink)))AC_CHECK_FUNCS(truncate, have_truncate=yes)dnl === Cannot nest AC_CHECK_FUNCS() callsif test "$have_truncate" != yes  ; then	AC_CHECK_FUNCS(ftruncate, have_ftruncate=yes)	if test "$have_ftruncate" != yes ; then		AC_CHECK_FUNCS(chsize)	fifiAC_CHECK_FUNCS(setenv, have_setenv=yes)dnl === Cannot nest AC_CHECK_FUNCS() callsif test "$have_setenv" != yes ; then	AC_CHECK_FUNCS(putenv, have_putenv=yes)	if test "$have_putenv" = yes ; then		AC_EGREP_HEADER(putenv, stdlib.h, have_putenv_prototype=yes)		if test "$have_putenv_prototype" = yes ; then			AC_MSG_CHECKING(putenv prototype)			AC_EGREP_HEADER([[^A-Za-zo-9_]putenv[ 	]*\(.*const.*\)[ 	]*;],				stdlib.h, AC_MSG_RESULT(correct),				[					AC_MSG_RESULT(no const)					AC_DEFINE(NON_CONST_PUTENV_PROTOTYPE)				])		fi	fifidnldnl if test yes = "$CYGWIN"; then with_posix_regex=no; fiif test no != "$with_posix_regex"; then	AC_CHECK_FUNCS(regcomp)	AC_MSG_CHECKING(if regcomp works)	AC_TRY_RUN([#include <sys/types.h>#include <regex.h>main() {	regex_t patbuf;	exit (regcomp (&patbuf, "/hello/", 0) != 0);}],regcomp_works=yes,regcomp_works=no,AC_DEFINE(CHECK_REGCOMP))	AC_MSG_RESULT($regcomp_works)	if test yes != "$regcomp_works"; then		AC_DEFINE(REGCOMP_BROKEN)	fifidnl if test yes = "$with_perl_regex"; thendnl 	AC_MSG_CHECKING(for Perl regex library)dnl 	pcre_candidates="$with_perl_regex $HOME/local/lib* /usr*/local/lib* /usr/lib*"dnl 	for lib in $pcre_candidates; dodnl 		if test -f $lib/libpcreposix.so; thendnl 			pcre_lib="-L$lib -lpcreposix"dnl 			breakdnl 		elif test -f $lib/libpcreposix.a; thendnl 			pcre_lib="$lib/libpcreposix.a"dnl 			breakdnl 		fidnl 	donednl 	if test -z "$pcre_lib"; thendnl 		AC_MSG_RESULT(not found)dnl 	elsednl 		AC_MSG_RESULT($lib)dnl 		AC_DEFINE(HAVE_REGCOMP)dnl 		LDFLAGS="$LDFLAGS $pcre_lib"dnl 		have_regex=yesdnl 	fidnl fidnl Checks for missing prototypesdnl -----------------------------AC_CHECKING(for missing prototypes)AC_DEFUN(CHECK_PROTO, [AC_EGREP_HEADER([[^A-Za-z0-9_]$1([ 	]+[A-Za-z0-9_]*)?\(], $2,, AC_DEFINE(patsubst([NEED_PROTO_NAME], [NAME], translit($1, [a-z], [A-Z]))) AC_MSG_RESULT(adding prototype for $1))])if test "$have_remove" = yes ; then	CHECK_PROTO(remove, stdio.h)else	CHECK_PROTO(unlink,	unistd.h)fiCHECK_PROTO(malloc,	stdlib.h)CHECK_PROTO(getenv,	stdlib.h)CHECK_PROTO(stat,	sys/stat.h)CHECK_PROTO(lstat,	sys/stat.h)if test "$have_fgetpos" = yes ; then	CHECK_PROTO(fgetpos, stdio.h)fiif test "$have_truncate" = yes ; then	CHECK_PROTO(truncate, unistd.h)fiif test "$have_ftruncate" = yes ; then	CHECK_PROTO(ftruncate, unistd.h)fidnl Output filesdnl ------------rm -f Makefileif test "$enable_maintainer_mode" = yes ; then	AC_MSG_RESULT(creating maintainer Makefile)	ln -s maintainer.mak Makefile	makefile_out=else	makefile_out=MakefilefiAC_OUTPUT($makefile_out)dnl vim:ts=4:sw=4: