# Process this file with autoconf to produce a configure script.
AC_INIT(fish,1.20.1,fish-users@lists.sf.net)

# If needed, run autoheader automatically
if test ! -f ./config.h.in -o config.h.in -ot configure.ac; then
	if which autoheader >/dev/null; then
		echo running autoheader...
		autoheader
	else
		echo Could not find the autoheader program in your path.
		echo This program is needed because the configure.ac file has been modified.
		echo Please install it and try again.
		exit 1
	fi
fi

# Tell autoconf to create config.h header 
AC_CONFIG_HEADERS(config.h)

# Set up various programs needed for install
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL

# Check for doxygen, which is needed to build
AC_CHECK_PROG( has_doxygen, [doxygen], "true")

if ! test $has_doxygen = "true"; then
	echo Could not find the Doxygen program in your path.
	echo This program is needed to build fish.
	echo Please install it and try again.
	exit 1
fi

# Check for seq program. If missing, install fallback shellscript implementation
AC_CHECK_PROG( SEQ_FALLBACK, seq, [ ], [seq])

# Optionally drop xsel
AC_ARG_WITH( xsel, 
			 AC_HELP_STRING([--without-xsel],
             [do not build the xsel program needed for X clipboard integration]),
			 [xsel=$withval],
			 [xsel=with_xsel] )

if [[ "$xsel" = "with_xsel" ]]; then
    AC_SUBST( XSEL,[xsel-0.9.6/xsel])
    AC_SUBST( XSEL_MAN,[xsel.1x])
    AC_SUBST( XSEL_MAN_PATH,[xsel-0.9.6/xsel.1x])
else
    AC_SUBST( XSEL,[ ])
    AC_SUBST( XSEL_MAN,[ ])
    AC_SUBST( XSEL_MAN_PATH,[ ])
fi

# Test cpu for special handling of ppc
AC_CANONICAL_TARGET

if test $target_cpu = powerpc; then
   AC_DEFINE([TPUTS_KLUDGE],[1],[Evil kludge to get Power based machines to work])
fi

AC_DEFINE_UNQUOTED([CPU],[L"$target_cpu"],[CPU type])


# Set up installation directories
if [[ "$prefix" = NONE ]]; then
	AC_DEFINE_UNQUOTED( [PREFIX], L"/usr/local", [Installation directory])
	AC_SUBST( PREFIX, /usr/local)
	export prefix=/usr/local
else
	AC_DEFINE_UNQUOTED( [PREFIX], L"$prefix", [Installation directory])
	AC_SUBST( PREFIX, [$prefix])
fi

AC_SUBST(fishdir,[/fish.d])
AC_SUBST(fishfile,[/fish])
AC_SUBST(fishinputfile,[/fish_inputrc])

AC_ARG_VAR( [docdir], [Documentation direcotry] )

if test -z $docdir; then
   AC_SUBST(docdir,[$datadir/doc/fish])
fi

AC_DEFINE_UNQUOTED( DOCDIR, [L"$(eval echo $docdir)"], [Documentation directory] )
AC_DEFINE_UNQUOTED( SYSCONFDIR, [L"$(eval echo $sysconfdir)"], [System configuration directory] )
AC_SUBST( SYSCONFDIR, ["$(eval echo $sysconfdir)"] )

# Set up locale directory
AC_DEFINE_UNQUOTED( [LOCALEDIR], "$(eval echo $datadir)/locale", [Locale directory])
AC_SUBST( [LOCALEDIR], [$datadir/locale])

# See if Linux procfs is present
AC_CHECK_FILES([/proc/self/stat])

# See if NetBSD pkgsrc is installed
AC_CHECK_FILE([/usr/pkg/lib],[AC_SUBST(LIBDIR,[-L/usr/pkg/lib\ -R/usr/pkg/lib])])
AC_CHECK_FILE([/usr/pkg/include],[AC_SUBST(INCLUDEDIR,[-I/usr/pkg/include])])

# Check for RLIMIT_AS in sys/resource.h.
AC_MSG_CHECKING([for RLIMIT_AS in sys/resource.h])
AC_TRY_COMPILE([#include <sys/resource.h>],
[int tmp; tmp=RLIMIT_AS;], have_rlimit_as=yes, have_rlimit_as=no)
if test "$have_rlimit_as" = yes; then
    AC_MSG_RESULT(yes)
	AC_DEFINE([HAVE_RLIMIT_AS], [1],
			  [Define to 1 if HAVE_RLIMIT_AS is defined in <sys/resource.h>.])
else
    AC_MSG_RESULT(no)
fi

# Check for RLIMIT_MEMLOCK in sys/resource.h.
AC_MSG_CHECKING([for RLIMIT_MEMLOCK in sys/resource.h])
AC_TRY_COMPILE([#include <sys/resource.h>],
[int tmp; tmp=RLIMIT_MEMLOCK;], have_rlimit_as=yes, have_rlimit_as=no)
if test "$have_rlimit_as" = yes; then
    AC_MSG_RESULT(yes)
	AC_DEFINE([HAVE_RLIMIT_MEMLOCK], [1],
			  [Define to 1 if HAVE_RLIMIT_MEMLOCK is defined in <sys/resource.h>.])
else
    AC_MSG_RESULT(no)
fi

# Check for RLIMIT_RSS in sys/resource.h.
AC_MSG_CHECKING([for RLIMIT_RSS in sys/resource.h])
AC_TRY_COMPILE([#include <sys/resource.h>],
[int tmp; tmp=RLIMIT_RSS;], have_rlimit_as=yes, have_rlimit_as=no)
if test "$have_rlimit_as" = yes; then
    AC_MSG_RESULT(yes)
	AC_DEFINE([HAVE_RLIMIT_RSS], [1],
			  [Define to 1 if HAVE_RLIMIT_RSS is defined in <sys/resource.h>.])
else
    AC_MSG_RESULT(no)
fi


# Check for RLIMIT_NPROC in sys/resource.h.
AC_MSG_CHECKING([for RLIMIT_NPROC in sys/resource.h])
AC_TRY_COMPILE([#include <sys/resource.h>],
[int tmp; tmp=RLIMIT_NPROC;], have_rlimit_as=yes, have_rlimit_as=no)
if test "$have_rlimit_as" = yes; then
    AC_MSG_RESULT(yes)
	AC_DEFINE([HAVE_RLIMIT_NPROC], [1],
			  [Define to 1 if HAVE_RLIMIT_NPROC is defined in <sys/resource.h>.])
else
    AC_MSG_RESULT(no)
fi


# Check for libraries
AC_CHECK_LIB(socket, connect)
AC_CHECK_LIB(rt, nanosleep)
AC_CHECK_LIB(intl, gettext)

# Check for various header files
AC_CHECK_HEADERS([getopt.h termio.h sys/resource.h term.h ncurses/term.h libintl.h])

AC_CHECK_HEADER([regex.h],
				[AC_DEFINE([HAVE_REGEX_H], [1], [Define to 1 if you have the <regex.h> header file.])],
				[AC_MSG_ERROR([Could not find the header regex.h, needed to build fish])])


# Check for various functions, and insert results into config.h
AC_CHECK_FUNCS( wcsdup wcsndup wcslen wcscasecmp wcsncasecmp gettext fwprintf )
AC_CHECK_FUNCS( futimes wcwidth wcswidth getopt_long wcstok fputwc fgetwc )
AC_CHECK_FUNCS( wcstol dcgettext )

AC_DEFINE([HAVE_TRANSLATE_H], [1],
			  [Define to 1 if the wgettext function should be used for translating strings.])

# Check again for gettext library, and insert results into the Makefile
AC_CHECK_FUNC(gettext, AC_SUBST(HAVE_GETTEXT,1), AC_SUBST(HAVE_GETTEXT,0) )

# Check for _nl_msg_cat_cntr symbol
AC_MSG_CHECKING([for _nl_msg_cat_cntr symbol])
AC_TRY_LINK([#if HAVE_LIBINTL_H]
[#include <libintl.h>]
[#endif],
[extern int  _nl_msg_cat_cntr;]
[int tmp = _nl_msg_cat_cntr;], have__nl_msg_cat_cntr=yes, have__nl_msg_cat_cntr=no)
if test "$have__nl_msg_cat_cntr" = yes; then
    AC_MSG_RESULT(yes)
	AC_DEFINE([HAVE__NL_MSG_CAT_CNTR], [1],
	          [Define to 1 if the _nl_msg_cat_cntr symbol is exported.])	
else
    AC_MSG_RESULT(no)
fi

# Check if we have ncurses, and use it rather than curses if possible.
AC_CHECK_HEADERS([ncurses.h],[AC_SUBST(CURSESLIB,[ncurses]) AC_DEFINE(HAVE_NCURSES_H)],[AC_SUBST(CURSESLIB,[curses])])

# Force use of ncurses if it is avialable via NetBSD pkgsrc. This is an
# ugly kludge to force NetBSD to use ncurses, since NetBSDs own version
# does not properly support terminfo.
AC_CHECK_FILE([/usr/pkg/include/ncurses.h],[AC_SUBST(CURSESLIB,[ncurses]) AC_DEFINE(HAVE_NCURSES_H)])

AC_CONFIG_FILES([Makefile fish.spec doc_src/fish.1 doc_src/Doxyfile init/fish init/fish_interactive.fish init/fish_complete.fish seq])
AC_OUTPUT

echo "Now run 'make' and 'make install' to built and install fish."
echo "Good luck!"