path: root/xorg-macros.m4

dnl $Id$
dnl
dnl Copyright 2005-2006 Sun Microsystems, Inc.  All rights reserved.
dnl 
dnl Permission is hereby granted, free of charge, to any person obtaining a
dnl copy of this software and associated documentation files (the
dnl "Software"), to deal in the Software without restriction, including
dnl without limitation the rights to use, copy, modify, merge, publish,
dnl distribute, and/or sell copies of the Software, and to permit persons
dnl to whom the Software is furnished to do so, provided that the above
dnl copyright notice(s) and this permission notice appear in all copies of
dnl the Software and that both the above copyright notice(s) and this
dnl permission notice appear in supporting documentation.
dnl
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
dnl OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
dnl HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
dnl INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
dnl FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
dnl NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
dnl WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
dnl
dnl Except as contained in this notice, the name of a copyright holder
dnl shall not be used in advertising or otherwise to promote the sale, use
dnl or other dealings in this Software without prior written authorization
dnl of the copyright holder.

# XORG_PROG_RAWCPP()
# ------------------
# Find cpp program and necessary flags for use in pre-processing text files
# such as man pages and config files
AC_DEFUN([XORG_PROG_RAWCPP],[
AC_REQUIRE([AC_PROG_CPP])
AC_PATH_PROGS(RAWCPP, [cpp], [${CPP}], 
   [$PATH:/bin:/usr/bin:/usr/lib:/usr/libexec:/usr/ccs/lib:/usr/ccs/lbin:/lib])

# Check for flag to avoid builtin definitions - assumes unix is predefined,
# which is not the best choice for supporting other OS'es, but covers most
# of the ones we need for now.
AC_MSG_CHECKING([if $RAWCPP requires -undef])
AC_LANG_CONFTEST([Does cpp redefine unix ?])
if test `${RAWCPP} < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
	AC_MSG_RESULT([no])
else
	if test `${RAWCPP} -undef < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
		RAWCPPFLAGS=-undef
		AC_MSG_RESULT([yes])
	else
		AC_MSG_ERROR([${RAWCPP} defines unix with or without -undef.  I don't know what to do.])
	fi
fi
rm -f conftest.$ac_ext

AC_MSG_CHECKING([if $RAWCPP requires -traditional])
AC_LANG_CONFTEST([Does cpp preserve   "whitespace"?])
if test `${RAWCPP} < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
	AC_MSG_RESULT([no])
else
	if test `${RAWCPP} -traditional < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
		RAWCPPFLAGS="${RAWCPPFLAGS} -traditional"
		AC_MSG_RESULT([yes])
	else
		AC_MSG_ERROR([${RAWCPP} does not preserve whitespace with or without -traditional.  I don't know what to do.])
	fi
fi
rm -f conftest.$ac_ext
AC_SUBST(RAWCPPFLAGS)
]) # XORG_PROG_RAWCPP

# XORG_MANPAGE_SECTIONS()
# -----------------------
# Determine which sections man pages go in for the different man page types
# on this OS - replaces *ManSuffix settings in old Imake *.cf per-os files.
# Not sure if there's any better way than just hardcoding by OS name.
# Override default settings by setting environment variables

AC_DEFUN([XORG_MANPAGE_SECTIONS],[
AC_REQUIRE([AC_CANONICAL_HOST])

if test x$APP_MAN_SUFFIX = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)	APP_MAN_SUFFIX=1x ;;
	*)	APP_MAN_SUFFIX=1  ;;
    esac
fi
if test x$APP_MAN_DIR = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)	APP_MAN_DIR='$(mandir)/man1' ;;
	*)	APP_MAN_DIR='$(mandir)/man$(APP_MAN_SUFFIX)' ;;
    esac
fi

if test x$LIB_MAN_SUFFIX = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)	LIB_MAN_SUFFIX=3x ;;
	*)	LIB_MAN_SUFFIX=3  ;;
    esac
fi
if test x$LIB_MAN_DIR = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)	LIB_MAN_DIR='$(mandir)/man3' ;;
	*)	LIB_MAN_DIR='$(mandir)/man$(LIB_MAN_SUFFIX)' ;;
    esac
fi

if test x$FILE_MAN_SUFFIX = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)		FILE_MAN_SUFFIX=5x ;;
	solaris*)	FILE_MAN_SUFFIX=4  ;;
	*)		FILE_MAN_SUFFIX=5  ;;
    esac
fi
if test x$FILE_MAN_DIR = x    ; then
    case $host_os in
	linux* | gnu* | k*bsd*-gnu)	FILE_MAN_DIR='$(mandir)/man5' ;;
	*)	FILE_MAN_DIR='$(mandir)/man$(FILE_MAN_SUFFIX)' ;;
    esac
fi

# In Imake's linux.cf, the misc man suffix & dir was only changed for 
# LinuxDebian, not other Linuxes, so we leave it unchanged here
if test x$MISC_MAN_SUFFIX = x    ; then
    case $host_os in
#	linux* | gnu* | k*bsd*-gnu)		MISC_MAN_SUFFIX=7x ;;
	solaris*)	MISC_MAN_SUFFIX=5  ;;
	*)		MISC_MAN_SUFFIX=7  ;;
    esac
fi
if test x$MISC_MAN_DIR = x    ; then
    case $host_os in
#	linux* | gnu* | k*bsd*-gnu)	MISC_MAN_DIR='$(mandir)/man7' ;;
	*)	MISC_MAN_DIR='$(mandir)/man$(MISC_MAN_SUFFIX)' ;;
    esac
fi

# In Imake's linux.cf, the driver man suffix & dir was only changed for 
# LinuxDebian, not other Linuxes, so we leave it unchanged here
if test x$DRIVER_MAN_SUFFIX = x    ; then
    case $host_os in
#	linux* | gnu* | k*bsd*-gnu)		DRIVER_MAN_SUFFIX=4x ;;
	solaris*)	DRIVER_MAN_SUFFIX=7  ;;
	*)		DRIVER_MAN_SUFFIX=4  ;;
    esac
fi
if test x$DRIVER_MAN_DIR = x    ; then
    case $host_os in
#	linux* | gnu* | k*bsd*-gnu)	DRIVER_MAN_DIR='$(mandir)/man4' ;;
	*)	DRIVER_MAN_DIR='$(mandir)/man$(DRIVER_MAN_SUFFIX)' ;;
    esac
fi

if test x$ADMIN_MAN_SUFFIX = x    ; then
    case $host_os in
	solaris*)	ADMIN_MAN_SUFFIX=1m ;;
	*)		ADMIN_MAN_SUFFIX=8  ;;
    esac
fi
if test x$ADMIN_MAN_DIR = x    ; then
    ADMIN_MAN_DIR='$(mandir)/man$(ADMIN_MAN_SUFFIX)'
fi


AC_SUBST([APP_MAN_SUFFIX])
AC_SUBST([LIB_MAN_SUFFIX])
AC_SUBST([FILE_MAN_SUFFIX])
AC_SUBST([MISC_MAN_SUFFIX])
AC_SUBST([DRIVER_MAN_SUFFIX])
AC_SUBST([ADMIN_MAN_SUFFIX])
AC_SUBST([APP_MAN_DIR])
AC_SUBST([LIB_MAN_DIR])
AC_SUBST([FILE_MAN_DIR])
AC_SUBST([MISC_MAN_DIR])
AC_SUBST([DRIVER_MAN_DIR])
AC_SUBST([ADMIN_MAN_DIR])
]) # XORG_MANPAGE_SECTIONS

# XORG_CHECK_LINUXDOC
# -------------------
# Defines the variable MAKE_TEXT if the necessary tools and
# files are found. $(MAKE_TEXT) blah.sgml will then produce blah.txt.
# Whether or not the necessary tools and files are found can be checked
# with the AM_CONDITIONAL "BUILD_LINUXDOC"
AC_DEFUN([XORG_CHECK_LINUXDOC],[
AC_CHECK_FILE(
	[$prefix/share/X11/sgml/defs.ent], 
	[DEFS_ENT_PATH=$prefix/share/X11/sgml],
	[DEFS_ENT_PATH=]
)

AC_PATH_PROG(LINUXDOC, linuxdoc)
AC_PATH_PROG(PS2PDF, ps2pdf)

AC_MSG_CHECKING([Whether to build documentation])

if test x$DEFS_ENT_PATH != x && test x$LINUXDOC != x ; then
   BUILDDOC=yes
else
   BUILDDOC=no
fi

AM_CONDITIONAL(BUILD_LINUXDOC, [test x$BUILDDOC = xyes])

AC_MSG_RESULT([$BUILDDOC])

AC_MSG_CHECKING([Whether to build pdf documentation])

if test x$PS2PDF != x ; then
   BUILDPDFDOC=yes
else
   BUILDPDFDOC=no
fi

AM_CONDITIONAL(BUILD_PDFDOC, [test x$BUILDPDFDOC = xyes])

AC_MSG_RESULT([$BUILDPDFDOC])

MAKE_TEXT="SGML_SEARCH_PATH=$DEFS_ENT_PATH GROFF_NO_SGR=y $LINUXDOC -B txt"
MAKE_PS="SGML_SEARCH_PATH=$DEFS_ENT_PATH $LINUXDOC -B latex --papersize=letter --output=ps"
MAKE_PDF="$PS2PDF"
MAKE_HTML="SGML_SEARCH_PATH=$DEFS_ENT_PATH $LINUXDOC  -B html --split=0"

AC_SUBST(MAKE_TEXT)
AC_SUBST(MAKE_PS)
AC_SUBST(MAKE_PDF)
AC_SUBST(MAKE_HTML)
]) # XORG_CHECK_LINUXDOC

# XORG_CHECK_MALLOC_ZERO
# ----------------------
# Defines {MALLOC,XMALLOC,XTMALLOC}_ZERO_CFLAGS appropriately if
# malloc(0) returns NULL.  Packages should add one of these cflags to
# their AM_CFLAGS (or other appropriate *_CFLAGS) to use them.
AC_DEFUN([XORG_CHECK_MALLOC_ZERO],[
AC_ARG_ENABLE(malloc0returnsnull,
	AC_HELP_STRING([--enable-malloc0returnsnull],
		       [malloc(0) returns NULL (default: auto)]),
	[MALLOC_ZERO_RETURNS_NULL=$enableval],
	[MALLOC_ZERO_RETURNS_NULL=auto])

AC_MSG_CHECKING([whether malloc(0) returns NULL])
if test "x$MALLOC_ZERO_RETURNS_NULL" = xauto; then
	AC_RUN_IFELSE([
char *malloc();
char *realloc();
char *calloc();
main() {
    char *m0, *r0, *c0, *p;
    m0 = malloc(0);
    p = malloc(10);
    r0 = realloc(p,0);
    c0 = calloc(0);
    exit(m0 == 0 || r0 == 0 || c0 == 0 ? 0 : 1);
}],
		[MALLOC_ZERO_RETURNS_NULL=yes],
		[MALLOC_ZERO_RETURNS_NULL=no])
fi
AC_MSG_RESULT([$MALLOC_ZERO_RETURNS_NULL])

if test "x$MALLOC_ZERO_RETURNS_NULL" = xyes; then
	MALLOC_ZERO_CFLAGS="-DMALLOC_0_RETURNS_NULL"
	XMALLOC_ZERO_CFLAGS=$MALLOC_ZERO_CFLAGS
	XTMALLOC_ZERO_CFLAGS="$MALLOC_ZERO_CFLAGS -DXTMALLOC_BC"
else
	MALLOC_ZERO_CFLAGS=""
	XMALLOC_ZERO_CFLAGS=""
	XTMALLOC_ZERO_CFLAGS=""
fi

AC_SUBST([MALLOC_ZERO_CFLAGS])
AC_SUBST([XMALLOC_ZERO_CFLAGS])
AC_SUBST([XTMALLOC_ZERO_CFLAGS])
]) # XORG_CHECK_MALLOC_ZERO

# XORG_WITH_LINT()
# ----------------
# Sets up flags for source checkers such as lint and sparse if --with-lint
# is specified.   (Use --with-lint=sparse for sparse.)
# Sets $LINT to name of source checker passed with --with-lint (default: lint)
# Sets $LINT_FLAGS to flags to pass to source checker
# Sets LINT automake conditional if enabled (default: disabled)
#
AC_DEFUN([XORG_WITH_LINT],[

# Allow checking code with lint, sparse, etc.
AC_ARG_WITH(lint, [AC_HELP_STRING([--with-lint],
		[Use a lint-style source code checker (default: disabled)])],
		[use_lint=$withval], [use_lint=no])
if test "x$use_lint" = "xyes" ; then
	LINT="lint"
else
	LINT="$use_lint"
fi
if test "x$LINT_FLAGS" = "x" -a "x$LINT" != "xno" ; then
    case $LINT in
	lint|*/lint)
	    case $host_os in
		solaris*)
			LINT_FLAGS="-u -b -h -erroff=E_INDISTING_FROM_TRUNC2"
			;;
	    esac
	    ;;
    esac
fi

AC_SUBST(LINT)
AC_SUBST(LINT_FLAGS)
AM_CONDITIONAL(LINT, [test x$LINT != xno])

]) # XORG_ENABLE_LINT