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# $Id$
# Copyright (c) 2009, Darren Hiebert
#
# This source code is released for free distribution under the terms
# of the GNU General Public License.
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.61])
AC_INIT([ctags.h])
AC_CONFIG_HEADERS([config.h])
AH_TEMPLATE([PACKAGE], [Package name.])
AH_TEMPLATE([VERSION], [Package version.])
AH_TEMPLATE([clock_t],
[Define to the appropriate type if <time.h> does not define this.])
AH_TEMPLATE([fpos_t],
[Define to long if <stdio.h> does not define this.])
AH_TEMPLATE([L_tmpnam],
[Define to the appropriate size for tmpnam() if <stdio.h> does not define
this.])
AH_TEMPLATE([HAVE_STAT_ST_INO],
[Define this macro if the field "st_ino" exists in struct stat in
<sys/stat.h>.])
AH_TEMPLATE([remove],
[Define remove to unlink if you have unlink(), but not remove().])
AH_TEMPLATE([SEEK_SET],
[Define this value used by fseek() appropriately if <stdio.h>
(or <unistd.h> on SunOS 4.1.x) does not define them.])
AH_TEMPLATE([INT_MAX],
[Define as the maximum integer on your system if not defined <limits.h>.])
AH_TEMPLATE([CUSTOM_CONFIGURATION_FILE],
[You can define this label to be a string containing the name of a
site-specific configuration file containing site-wide default options. The
files /etc/ctags.conf and /usr/local/etc/ctags.conf are already checked,
so only define one here if you need a file somewhere else.])
AH_TEMPLATE([MACROS_USE_PATTERNS],
[Define this label if you want macro tags (defined lables) to use patterns
in the EX command by default (original ctags behavior is to use line
numbers).])
AH_VERBATIM([DEFAULT_FILE_FORMAT], [
/* Define this as desired.
* 1: Original ctags format
* 2: Extended ctags format with extension flags in EX-style comment.
*/
#define DEFAULT_FILE_FORMAT 2
])
AH_TEMPLATE([SYS_INTERPRETER],
[Define this label if your system supports starting scripts with a line of
the form "#! /bin/sh" to select the interpreter to use for the script.])
AH_TEMPLATE([CASE_INSENSITIVE_FILENAMES],
[Define this label if your system uses case-insensitive file names])
AH_VERBATIM([EXTERNAL_SORT], [
/* Define this label to use the system sort utility (which is probably more
* efficient) over the internal sorting algorithm.
*/
#ifndef INTERNAL_SORT
# undef EXTERNAL_SORT
#endif
])
AH_TEMPLATE([TMPDIR],
[If you wish to change the directory in which temporary files are stored,
define this label to the directory desired.])
AH_TEMPLATE([REGCOMP_BROKEN],
[Define this label if regcomp() is broken.])
AH_TEMPLATE([CHECK_REGCOMP],
[Define this label if you wish to check the regcomp() function at run time
for correct behavior. This function is currently broken on Cygwin.])
AH_TEMPLATE([__USE_FIXED_PROTOTYPES__],
[This corrects the problem of missing prototypes for certain functions
in some GNU installations (e.g. SunOS 4.1.x).])
AH_TEMPLATE([NON_CONST_PUTENV_PROTOTYPE],
[Define this is you have a prototype for putenv() in <stdlib.h>, but
doesn't declare its argument as "const char *".])
AH_TEMPLATE([NEED_PROTO_REMOVE],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_UNLINK],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_MALLOC],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_GETENV],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_FGETPOS],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_STAT],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_LSTAT],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_TRUNCATE],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
AH_TEMPLATE([NEED_PROTO_FTRUNCATE],
[If you receive error or warning messages indicating that you are missing
a prototype for, or a type mismatch using, the following function, define
this label and remake.])
# Report system info
# ------------------
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/null
# Define convenience macros
# -------------------------
# 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)
[$4]
]) ])
# Checks for configuration options
# --------------------------------
AC_ARG_WITH(posix-regex,
[ --with-posix-regex use Posix regex interface, if available])
AC_ARG_WITH(readlib,
[ --with-readlib include readtags library object during install])
# AC_ARG_WITH(perl-regex,
# [ --with-perl-regex use Perl pcre interface, if available])
AC_ARG_ENABLE(etags,
[ --enable-etags enable the installation of links for etags])
AC_ARG_ENABLE(extended-format,
[ --disable-extended-format
disable extension flags; use original ctags file
format only],
AC_DEFINE(DEFAULT_FILE_FORMAT, 1), AC_DEFINE(DEFAULT_FILE_FORMAT, 2))
AC_ARG_ENABLE(external-sort,
[ --disable-external-sort use internal sort algorithm instead of sort program])
AC_ARG_ENABLE(custom-config,
[ --enable-custom-config=FILE
enable custom config file for site-wide defaults])
AC_ARG_ENABLE(macro-patterns,
[ --enable-macro-patterns use patterns as default method to locate macros
instead of line numbers])
AC_ARG_ENABLE(maintainer-mode,
[ --enable-maintainer-mode
use maintainer makefile])
AC_ARG_ENABLE(shell-globbing,
[ --enable-shell-globbing=DIR
does shell expand wildcards (yes|no)? [yes]])
AC_ARG_ENABLE(tmpdir,
[ --enable-tmpdir=DIR default directory for temporary files [ARG=/tmp]],
tmpdir_specified=yes)
# Process configuration options
# -----------------------------
if test "$enable_maintainer_mode" = yes ; then
AC_MSG_RESULT(enabling maintainer mode)
fi
install_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)
fi
AC_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)
fi
AC_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($enable_custom_config will be used as custom configuration file)
fi
if test "$enable_macro_patterns" = yes ; then
AC_DEFINE(MACROS_USE_PATTERNS)
AC_MSG_RESULT(tag file will use patterns for macros by default)
fi
# Checks for programs
# -------------------
AC_PROG_CC
case `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
;;
esac
AC_PROG_LN_S
AC_CHECK_PROG(STRIP, strip, strip, :)
AC_SYS_LARGEFILE
# Checks for operating environment
# --------------------------------
# Check for temporary directory
AC_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"
fi
if test -d $tmpdir ; then
AC_MSG_RESULT($tmpdir)
AC_DEFINE_UNQUOTED(TMPDIR, "$tmpdir")
else
AC_MSG_ERROR($tmpdir does not exist)
fi
# Check whether system supports #! scripts
AC_SYS_INTERPRETER
if test yes = "$interpval"; then
AC_DEFINE(SYS_INTERPRETER)
fi
# Test for case-insensitive filenames
AC_MSG_CHECKING(for case-insensitive filenames)
touch conftest.cif
if test -f CONFTEST.CIF; then
AC_MSG_RESULT(yes)
AC_DEFINE(CASE_INSENSITIVE_FILENAMES)
else
AC_MSG_RESULT(no)
fi
rm -f conftest.cif
AC_MSG_CHECKING(selected sort method)
if test no = "$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 ${tmpdir}/sort.test
fi
fi
if test "$enable_external_sort" != yes ; then
AC_MSG_RESULT(using internal sort algorithm as fallback)
fi
# Checks for header files
# -----------------------
AC_CHECK_HEADERS_ONCE([dirent.h fcntl.h fnmatch.h stat.h stdlib.h string.h])
AC_CHECK_HEADERS_ONCE([time.h types.h unistd.h])
AC_CHECK_HEADERS_ONCE([sys/dir.h sys/stat.h sys/times.h sys/types.h])
# Checks for header file macros
# -----------------------------
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)))
# Checks for typedefs
# -------------------
AC_TYPE_SIZE_T
AC_TYPE_OFF_T
AC_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)
])
# Checks for compiler characteristics
# -----------------------------------
# AC_CYGWIN
# AC_MINGW32
AC_C_CONST
AC_OBJEXT
AC_EXEEXT
AC_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)
fi
# Checks for library functions
# ----------------------------
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)
# SEEK_SET should be in stdio.h, but may be in unistd.h on SunOS 4.1.x
if test "$have_fgetpos" != yes ; then
CHECK_HEADER_DEFINE(SEEK_SET, stdio.h,,
CHECK_HEADER_DEFINE(SEEK_SET, unistd.h,,
AC_DEFINE(SEEK_SET, 0)))
fi
AC_CHECK_FUNCS(mkstemp, have_mkstemp=yes)
if test "$have_mkstemp" != yes ; then
AC_CHECK_FUNCS(tempnam, have_tempnam=yes)
fi
if test "$have_mkstemp" != yes -a "$have_tempnam" != yes; then
AC_CHECK_FUNCS(chmod)
if test "$tmpdir_specified" = yes ; then
AC_MSG_RESULT(use of tmpnam overrides temporary directory selection)
fi
fi
AC_CHECK_FUNCS(opendir findfirst _findfirst, break)
AC_CHECK_FUNCS(strerror)
AC_CHECK_FUNCS(clock times, break)
AC_CHECK_FUNCS(remove, have_remove=yes,
CHECK_HEADER_DEFINE(remove, unistd.h,, AC_DEFINE(remove, unlink)))
AC_CHECK_FUNCS(truncate, have_truncate=yes)
# === Cannot nest AC_CHECK_FUNCS() calls
if test "$have_truncate" != yes ; then
AC_CHECK_FUNCS(ftruncate, have_ftruncate=yes)
if test "$have_ftruncate" != yes ; then
AC_CHECK_FUNCS(chsize)
fi
fi
AC_CHECK_FUNCS(setenv, have_setenv=yes)
# === Cannot nest AC_CHECK_FUNCS() calls
if test "$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
fi
fi
#
# if test yes = "$CYGWIN"; then with_posix_regex=no; fi
if test no != "$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)
fi
fi
# if test yes = "$with_perl_regex"; then
# AC_MSG_CHECKING(for Perl regex library)
# pcre_candidates="$with_perl_regex $HOME/local/lib* /usr*/local/lib* /usr/lib*"
# for lib in $pcre_candidates; do
# if test -f $lib/libpcreposix.so; then
# pcre_lib="-L$lib -lpcreposix"
# break
# elif test -f $lib/libpcreposix.a; then
# pcre_lib="$lib/libpcreposix.a"
# break
# fi
# done
# if test -z "$pcre_lib"; then
# AC_MSG_RESULT(not found)
# else
# AC_MSG_RESULT($lib)
# AC_DEFINE(HAVE_REGCOMP)
# LDFLAGS="$LDFLAGS $pcre_lib"
# have_regex=yes
# fi
# fi
# Checks for missing prototypes
# -----------------------------
AC_CHECKING(for new missing prototypes)
AC_DEFUN(CHECK_PROTO, [
AC_EGREP_HEADER([[^A-Za-z0-9_]$1([ ]+[A-Za-z0-9_]*)?[ ]*\(],
$2,
,
[
AC_MSG_RESULT([adding prototype for $1])
AC_DEFINE(patsubst([NEED_PROTO_NAME], [NAME], translit([$1], [[a-z]], [[A-Z]])))
])])
if test "$have_remove" = yes ; then
CHECK_PROTO(remove, stdio.h)
else
CHECK_PROTO(unlink, unistd.h)
fi
CHECK_PROTO(malloc, stdlib.h)
CHECK_PROTO(getenv, stdlib.h)
CHECK_PROTO(stat, sys/stat.h)
CHECK_PROTO(lstat, sys/stat.h)
if test "$have_fgetpos" = yes ; then
CHECK_PROTO(fgetpos, stdio.h)
fi
if test "$have_truncate" = yes ; then
CHECK_PROTO(truncate, unistd.h)
fi
if test "$have_ftruncate" = yes ; then
CHECK_PROTO(ftruncate, unistd.h)
fi
# Output files
# ------------
rm -f Makefile
if test "$enable_maintainer_mode" = yes ; then
AC_MSG_RESULT(creating maintainer Makefile)
ln -s maintainer.mak Makefile
makefile_out=
else
makefile_out=Makefile
fi
AC_OUTPUT($makefile_out)
# vim:ts=4:sw=4:
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