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configure.ac
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dnl Autoconf script for GNU Emacs
dnl To rebuild the 'configure' script from this, execute the command
dnl autoconf
dnl in the directory containing this script.
dnl If you changed any AC_DEFINES, also run autoheader.
dnl
dnl Copyright (C) 1994-1996, 1999-2025 Free Software Foundation, Inc.
dnl
dnl This file is part of GNU Emacs.
dnl
dnl GNU Emacs is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation, either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl GNU Emacs is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
AC_PREREQ([2.65])
dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
AC_INIT([GNU Emacs], [31.0.50], [bug-gnu-emacs@gnu.org], [],
[https://www.gnu.org/software/emacs/])
if test "$XCONFIGURE" = "android"; then
# configure is being called recursively to configure Emacs for
# Android!
AC_MSG_NOTICE([called to recursively configure Emacs for Android.])
# Set CC to ANDROID_CC and CFLAGS to ANDROID_CFLAGS.
CC=$ANDROID_CC
# Set -Wno-implicit-function-declaration. Building Emacs for older
# versions of Android requires configure tests to fail if the
# functions are not defined, as the Android library in the NDK
# defines subroutines that are not available in the headers being
# used.
CFLAGS="$ANDROID_CFLAGS -Werror=implicit-function-declaration"
# Don't explicitly enable support for large files unless Emacs is
# being built for API 21 or later. Otherwise, mmap does not work.
#
# Moreover, 64-bit variants of file IO functions in the C library are
# liable to fail with ENOSYS or EINVAL on earlier API versions, and as
# such their definitions must be explicitly disabled on NDK releases
# that enable them by default.
AS_IF([test "$ANDROID_SDK" -lt "21"], [
CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=32"
enable_largefile=no
enable_year2038=no])
fi
dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
dnl and then quoted again for a C string. Separate options with spaces.
dnl Add some environment variables, if they were passed via the environment
dnl rather than on the command-line.
emacs_config_options=
optsep=
dnl This is the documented way to record the args passed to configure,
dnl rather than $ac_configure_args.
for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
case $opt in
-n | --no-create | --no-recursion)
continue ;;
CFLAGS | CPPFLAGS | LDFLAGS)
eval 'test "${'$opt'+set}" = set' || continue
case " $*" in
*" $opt="*) continue ;;
esac
eval opt=$opt=\$$opt ;;
esac
emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
case $opt in
*[["$emacs_shell_specials"]]*)
case $opt in
*\'*)
emacs_quote_apostrophes="s/'/'\\\\''/g"
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
esac
opt="'$opt'"
case $opt in
*[['"\\']]*)
emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
esac ;;
esac
AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
optsep=' '
done
AC_CONFIG_HEADERS([src/config.h:src/config.in])
AC_CONFIG_SRCDIR([src/lisp.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
xcsdkdir=
AC_CHECK_PROGS([XCRUN], [xcrun])
if test -n "$XCRUN"; then
if test -z "$MAKE"; then
dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
dnl the usual MAKE variable that 'make' itself uses.
AC_CHECK_PROG([MAKE_PROG], [make], [yes])
if test -z "$MAKE_PROG"; then
MAKE="$XCRUN MAKE"
export MAKE
xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
fi
fi
fi
dnl Check for GNU Make and possibly set MAKE.
[emacs_check_gnu_make ()
{
emacs_makeout=`($1 --version) 2>/dev/null` &&
case $emacs_makeout in
'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
ac_path_MAKE_found=:;;
esac
}]
AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
[ac_path_MAKE_found=false
if test -n "$MAKE"; then
emacs_check_gnu_make "$MAKE"
ac_cv_path_MAKE=$MAKE
else
emacs_tried_make=false
emacs_tried_gmake=false
emacs_tried_gnumake=false
AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
[[emacs_check_gnu_make "$ac_path_MAKE"
if $ac_path_MAKE_found; then
# Use the fully-qualified program name only if the basename
# would not resolve to it.
if eval \$emacs_tried_$ac_prog; then
ac_cv_path_MAKE=$ac_path_MAKE
else
ac_cv_path_MAKE=$ac_prog
fi
fi
eval emacs_tried_$ac_prog=:]])
fi])
$ac_path_MAKE_found || {
AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
If you have it installed under another name, configure with 'MAKE=...'.
For example, run '$0 MAKE=gnu-make'.]])
}
MAKE=$ac_cv_path_MAKE
export MAKE
dnl Canonicalize the configuration name.
if test "$XCONFIGURE" = "android"; then
dnl Set host to whatever Android system Emacs is being configured
dnl for. Determine this by looking at the output of ANDROID_CC.
AC_MSG_CHECKING([the cross-compiler's target])
cc_target=`${CC} -v 2>&1 | sed -n 's/Target: //p'`
case "$cc_target" in
*android*) host_alias=$cc_target
;;
*) AC_MSG_ERROR([The cross compiler does not compile for Android.
Please verify that you specified the correct compiler in the ANDROID_CC
variable when you ran configure.])
;;
esac
AC_MSG_RESULT([$host_alias])
fi
AC_CANONICAL_HOST
AC_CANONICAL_BUILD
AS_IF([test "$XCONFIGURE" = "android"],[
# Initialize the Android NDK build system. Make sure to use the
# passed through NDK path.
# Make sure to pass through the CFLAGS, as older versions of the
# NDK require them to be able to find system includes.
with_ndk_path="$android_ndk_path"
with_ndk_cxx="$android_ndk_cxx"
ndk_INIT([$android_abi], [$ANDROID_SDK], [cross/ndk-build],
[$ANDROID_CFLAGS])
# At the same time, configure libexec with the build directory
# set to `exec'.
AS_MKDIR_P([exec])
# Enter exec and configure it, using the C compiler as both the
# assembler and the linker. Determine the absolute name of the
# source directory.
# N.B. that the linker is actually cc, so pass -nostdlib, lest
# the crt be linked in. Likewise for as.
AS_CASE([$srcdir], [.], [emacs_srcdir=`pwd`],
[[[\\/]* | ?:[\\/]*]], [emacs_srcdir=$srcdir],
[*], [emacs_srcdir=`pwd`/$srcdir])
AC_MSG_NOTICE([configuring in `exec'])
# Derive a name for a cache file for this configure script from the
# current, if specified.
exec_cache_file=
AS_CASE([$cache_file], [/dev/null | ""], [],
[[[\\/]* | ?:[\\/]*]], [exec_cache_file="--cache-file=$cache_file.2"],
[*], [exec_cache_file="--cache-file=../$cache_file.2"])
OLDCWD=`pwd`
cd exec
$CONFIG_SHELL $emacs_srcdir/exec/configure \
--host=$host "CC=$CC" "LD=$CC" "AS=$CC" \
"AR=$AR" "CFLAGS=$CFLAGS" $exec_cache_file
emacs_val=$?
cd $OLDCWD
AS_IF([test "$emacs_val" != "0"],
[AC_MSG_ERROR([failed to configure in `exec'])])
])
case $host in
*-mingw*)
if test -z "$host_alias"; then
# No --host argument was given to 'configure'; therefore $host
# was set to a default value based on the build platform. But
# this default value may be wrong if we are building from a
# 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
# Therefore, we'll try to get the right host platform from the
# compiler's target.
AC_MSG_CHECKING([the compiler's target])
if test -z "$CC"; then
cc=gcc
else
cc=$CC
fi
cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
case "$cc_target" in
*-*) host=$cc_target
;;
"") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
Please explicitly provide --host.])
;;
*) AC_MSG_WARN([Compiler reported non-standard target.
Defaulting to $host.])
;;
esac
AC_MSG_RESULT([$host])
fi
. $srcdir/nt/mingw-cfg.site
case $srcdir in
/* | ?:*)
# srcdir is an absolute path. In this case, force the format
# "/c/foo/bar", to simplify later conversions to native Windows
# format ("c:/foo/bar").
srcdir=`cd "${srcdir}" && pwd -W`
# 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
# We downcase the drive letter to avoid warnings when
# generating autoloads.
eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
;;
esac;;
esac
canonical=$host
configuration=${host_alias-${build_alias-$host}}
emacs_uname_r=`uname -r`
dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM
dnl It is important that variables on the RHS not be expanded here,
dnl hence the single quotes. This is per the GNU coding standards, see
dnl (autoconf) Installation Directory Variables
dnl See also epaths.h below.
lispdirrel='${version}/lisp'
lispdir='${datadir}/emacs/'${lispdirrel}
standardlisppath='${lispdir}'
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${standardlisppath}'
etcdir='${datadir}/emacs/${version}/etc'
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
etcdocdir='${datadir}/emacs/${version}/etc'
gamedir='${localstatedir}/games/emacs'
dnl Special option to disable the most of other options.
AC_ARG_WITH([all],
[AS_HELP_STRING([--without-all],
[omit almost all features and build
small executable with minimal dependencies])],
[with_features=$withval],
[with_features=yes])
dnl ARCH_INDEPENDENT_CONFIG_FILES(FILE...)
dnl Like AC_CONFIG_FILES(FILE). However, do not generate this
dnl if configure is being called recursively in preparation
dnl for cross-compilation.
AC_DEFUN([ARCH_INDEPENDENT_CONFIG_FILES], [
AS_IF([test "$XCONFIGURE" != "android"], [AC_CONFIG_FILES([$1])])])
dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being disabled.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set to either the user's value (if the option is
dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
dnl option is not specified). Note that the shell variable name is
dnl constructed as autoconf does, by replacing non-alphanumeric
dnl characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl
dnl OPTION_DEFAULT_IFAVAILABLE(NAME, HELP-STRING)
dnl Create a new --with option that defaults to 'ifavailable',
dnl unless it is overridden by $with_features being equal to 'no'.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set to either the user's value (if the option is
dnl specified; 'yes' for a plain --with-NAME) or to 'ifavailable' (if the
dnl option is not specified). Note that the shell variable name is
dnl constructed as autoconf does, by replacing non-alphanumeric
dnl characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_IFAVAILABLE], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
AS_IF([test "$with_features" != no],
[m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=ifavailable],
[m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl
])dnl
dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
dnl Create a new --with option that defaults to $with_features.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set either to 'no' (for a plain --without-NAME) or to
dnl 'yes' (if the option is not specified). Note that the shell
dnl variable name is constructed as autoconf does, by replacing
dnl non-alphanumeric characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_ON], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
])dnl
# For retrieving mail, unencrypted network connections are the default
# only on native MS-Windows platforms. (FIXME: These platforms should
# also be secure by default.)
AC_ARG_WITH([mailutils],
[AS_HELP_STRING([--with-mailutils],
[rely on GNU Mailutils, so that the --without-pop through --with-mailhost
options are irrelevant; this is the default if GNU Mailutils is
installed])],
[],
[AS_IF([test "$with_features" != "no"],
[with_mailutils=yes-unless-android
AS_IF([test "x$XCONFIGURE" != "xandroid"],
[(movemail --version) >/dev/null 2>&1 || with_mailutils=no],
[dnl Don't check for movemail if cross-compiling.
dnl instead, default to false.
with_mailutils=no])])])
AC_ARG_WITH([pop],
[AS_HELP_STRING([--with-pop],
[Support POP mail retrieval if Emacs movemail is used (not recommended,
as Emacs movemail POP is insecure). This is the default only on
native MS-Windows and Android.])],
[],
dnl Enable movemail POP support on Android as GNU Mailutils is
dnl normally unavailable on that platform.
[AS_CASE([$host],
[*-mingw*|*android*], [with_pop=yes],
[with_pop=no-by-default])])
if test "$with_pop" = yes; then
AC_DEFINE([MAIL_USE_POP])
fi
AH_TEMPLATE([MAIL_USE_POP], [Define to support POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
if test "$with_kerberos" != no; then
AC_DEFINE([KERBEROS])
fi
AH_TEMPLATE([KERBEROS],
[Define to support Kerberos-authenticated POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
if test "${with_kerberos5}" != no; then
if test "${with_kerberos}" = no; then
with_kerberos=yes
AC_DEFINE([KERBEROS])
fi
AC_DEFINE([KERBEROS5], [1],
[Define to use Kerberos 5 instead of Kerberos 4.])
fi
OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
if test "$with_hesiod" != no; then
AC_DEFINE([HESIOD], [1],
[Define to support using a Hesiod database to find the POP server.])
fi
OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
if test "$with_mail_unlink" != no; then
AC_DEFINE([MAIL_UNLINK_SPOOL], [1],
[Define to unlink, rather than empty, mail spool after reading.])
fi
AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
[string giving default POP mail host])],
AC_DEFINE_UNQUOTED([MAILHOST], ["$withval"],
[String giving fallback POP mail host.]))
AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
[compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
[ case "${withval}" in
yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
*) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
;;
esac
with_sound=$val
],
[with_sound=$with_features])
AC_ARG_WITH([pdumper],
AS_HELP_STRING(
[--with-pdumper=VALUE],
[enable pdumper support unconditionally
('yes', 'no', or 'auto': default 'auto')]),
[ case "${withval}" in
yes|no|auto) val=$withval ;;
*) AC_MSG_ERROR(
['--with-pdumper=$withval' is invalid;
this option's value should be 'yes' or 'no'.]) ;;
esac
with_pdumper=$val
],
[with_pdumper=auto])
AC_ARG_WITH([dumping],[AS_HELP_STRING([--with-dumping=VALUE],
[kind of dumping to use for initial Emacs build
(VALUE one of: pdumper, none; default pdumper)])],
[ case "${withval}" in
pdumper|none) val=$withval ;;
*) AC_MSG_ERROR(['--with-dumping=$withval is invalid;
this option's value should be 'pdumper' or 'none'.])
;;
esac
with_dumping=$val
],
[with_dumping=pdumper])
if test "$with_pdumper" = "auto"; then
if test "$with_dumping" = "pdumper"; then
with_pdumper=yes
else
with_pdumper=no
fi
fi
if test "$with_dumping" = "pdumper" && test "$with_pdumper" = "no"; then
AC_MSG_ERROR(['--with-dumping=pdumper' requires pdumper support])
fi
if test "$with_pdumper" = "yes"; then
AC_DEFINE([HAVE_PDUMPER], [1],
[Define to build with portable dumper support])
HAVE_PDUMPER=yes
else
HAVE_PDUMPER=no
fi
AC_SUBST([HAVE_PDUMPER])
DUMPING=$with_dumping
AC_SUBST([DUMPING])
dnl FIXME currently it is not the last.
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the file name of X, and it's best to
dnl keep them together visually.
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
[use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
[ case "${withval}" in
y | ye | yes ) val=gtk ;;
n | no ) val=no ;;
l | lu | luc | luci | lucid ) val=lucid ;;
a | at | ath | athe | athen | athena ) val=athena ;;
m | mo | mot | moti | motif ) val=motif ;;
g | gt | gtk ) val=gtk ;;
gtk2 ) val=gtk2 ;;
gtk3 ) val=gtk3 ;;
* )
AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
'athena' and 'lucid' are synonyms.])
;;
esac
with_x_toolkit=$val
])
OPTION_DEFAULT_OFF([wide-int],
[prefer wide Emacs integers (typically 62-bit);
on 32-bit hosts, this allows buffer and string size up to 2GB,
at the cost of 10% to 30% slowdown of Lisp interpreter
and larger memory footprint])
if test "$with_wide_int" = yes; then
AC_DEFINE([WIDE_EMACS_INT], [1], [Use long long for EMACS_INT if available.])
fi
dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
with_xpm_set=${with_xpm+set}
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
OPTION_DEFAULT_ON([webp],[don't compile with WebP image support])
OPTION_DEFAULT_ON([sqlite3],[don't compile with sqlite3 support])
OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
OPTION_DEFAULT_ON([cairo],[don't compile with Cairo drawing])
OPTION_DEFAULT_OFF([cairo-xcb], [use XCB surfaces for Cairo support])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_OFF([imagemagick],[compile with ImageMagick image support])
OPTION_DEFAULT_ON([native-image-api], [don't use native image APIs (GDI+ on Windows)])
OPTION_DEFAULT_IFAVAILABLE([tree-sitter], [compile with tree-sitter])
OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
OPTION_DEFAULT_ON([harfbuzz],[don't use HarfBuzz for text shaping])
OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif/Xaw3d/GTK toolkit scroll bars])
OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
OPTION_DEFAULT_ON([xim],[at runtime, default X11 XIM to off])
OPTION_DEFAULT_ON([xdbe],[don't use X11 double buffering support])
AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
[use Nextstep (macOS Cocoa or GNUstep) windowing system.
On by default on macOS.])],[],[with_ns=maybe])
OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
OPTION_DEFAULT_OFF([pgtk], [use GTK to support window systems other than X])
OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
OPTION_DEFAULT_IFAVAILABLE([dbus],[compile with D-Bus support])
AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
[compile with Gconf support (Gsettings replaces this)])],[],
[if test $with_features = yes; then
with_gconf=maybe
else
with_gconf=no
fi])
OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
OPTION_DEFAULT_ON([modules],[don't compile with dynamic modules support])
OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
OPTION_DEFAULT_OFF([cygwin32-native-compilation],[use native compilation on 32-bit Cygwin])
OPTION_DEFAULT_ON([xinput2],[don't use version 2 of the X Input Extension for input])
OPTION_DEFAULT_OFF([small-ja-dic],[generate a smaller-size Japanese dictionary])
OPTION_DEFAULT_OFF([android],[cross-compile Android application package])
OPTION_DEFAULT_ON([android-debug],[don't build Emacs as a debug package on Android])
# Find out of Android support is enabled and mailutils has defaulted
# to `yes-unless-android'. Disable it if so.
AS_IF([test "x$with_mailutils" = "xyes-unless-android"],
[AS_IF([test "x$with_android" != "xno"],
[with_mailutils=no],
[with_mailutils=yes])])
# Clear with_mailutils if it's set to no.
AS_IF([test "$with_mailutils" = no],
[with_mailutils=])
AS_IF([test x"$with_mailutils" = xyes],
[AC_DEFINE([HAVE_MAILUTILS], [1],
[Define to 1 if Emacs was configured with mailutils])])
AC_SUBST([with_mailutils])
AC_ARG_WITH([shared-user-id],
[AS_HELP_STRING([--with-shared-user-id=ID],
[use the given shared user ID in Android builds])])
AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
[use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
[ case "${withval}" in
y | ye | yes ) val=yes ;;
n | no ) val=no ;;
i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
g | gf | gfi | gfil | gfile ) val=gfile ;;
w | w3 | w32 ) val=w32 ;;
* ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
;;
esac
with_file_notification=$val
],
[with_file_notification=$with_features])
OPTION_DEFAULT_OFF([xwidgets],
[enable use of xwidgets in Emacs buffers (requires gtk3 or macOS Cocoa)])
OPTION_DEFAULT_OFF([be-app],
[enable use of Haiku's Application Kit as a window system])
OPTION_DEFAULT_OFF([be-cairo],
[enable use of cairo under Haiku's Application Kit])
## Makefile.in needs the cache file name.
AC_SUBST([cache_file])
## This is an option because I do not know if all info/man support
## compressed files, nor how to test if they do so.
OPTION_DEFAULT_ON([compress-install],
[don't compress some files (.el, .info, etc.) when installing. Equivalent to:
make GZIP_PROG= install])
AC_ARG_WITH([gameuser],
[AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
[user for shared game score files.
An argument prefixed by ':' specifies a group instead.])])
gameuser=
gamegroup=
case ${with_gameuser} in
'' | no) ;;
yes) gamegroup=games ;;
:*) gamegroup=${with_gameuser#:} ;;
*) gameuser=${with_gameuser} ;;
esac
AC_ARG_WITH([gnustep-conf],
[AS_HELP_STRING([--with-gnustep-conf=FILENAME],
[name of GNUstep configuration file to use on systems where the command
'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
/etc/GNUstep/GNUstep.conf])])
test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
test "X$GNUSTEP_CONFIG_FILE" = "X" && \
GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
AC_ARG_ENABLE([ns-self-contained],
[AS_HELP_STRING([--disable-ns-self-contained],
[disable self contained build under NeXTstep])],
[EN_NS_SELF_CONTAINED=$enableval],
[EN_NS_SELF_CONTAINED=yes])
locallisppathset=no
AC_ARG_ENABLE([locallisppath],
[AS_HELP_STRING([--enable-locallisppath=PATH],
[directories Emacs should search for lisp files specific
to this site])],
[if test "${enableval}" = "no"; then
locallisppath=
elif test "${enableval}" != "yes"; then
locallisppath=${enableval} locallisppathset=yes
fi])
AC_ARG_ENABLE([checking],
[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
[enable expensive checks. With LIST,
enable only specific categories of checks.
Categories are: all,yes,no.
Flags are: stringbytes, stringoverrun, stringfreelist,
structs, glyphs])],
[ac_checking_flags="${enableval}"],[])
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
CHECK_STRUCTS=false
for check in $ac_checking_flags
do
case $check in
# these set all the flags to specific states
yes) ac_enable_checking=1 ;;
no) ac_enable_checking= ;
CHECK_STRUCTS=false
ac_gc_check_stringbytes= ;
ac_gc_check_string_overrun= ;
ac_gc_check_string_free_list= ;
ac_glyphs_debug= ;;
all) ac_enable_checking=1 ;
CHECK_STRUCTS=true
ac_gc_check_stringbytes=1 ;
ac_gc_check_string_overrun=1 ;
ac_gc_check_string_free_list=1 ;
ac_glyphs_debug=1 ;;
# these enable particular checks
stringbytes) ac_gc_check_stringbytes=1 ;;
stringoverrun) ac_gc_check_string_overrun=1 ;;
stringfreelist) ac_gc_check_string_free_list=1 ;;
structs) CHECK_STRUCTS=true ;;
glyphs) ac_glyphs_debug=1 ;;
*) AC_MSG_ERROR([unknown check category $check]) ;;
esac
done
IFS="$ac_save_IFS"
# This environment variable is used to signal that checking should be
# enabled on Android. When that happens, simply enable checking for
# the cross-compiled Android binary.
AS_IF([test "x$XCONFIGURE" = "xandroid" \
&& test "x$android_enable_checking" = "xyes"],
[ac_enable_checking=yes])
# There is little point in enabling checking in the build machine if
# cross-compiling for Android.
AS_IF([test "$with_android" = no || test -n "$XCONFIGURE"],[
if test x$ac_enable_checking != x ; then
AC_DEFINE([ENABLE_CHECKING], [1],
[Define to 1 if expensive run-time data type and consistency checks are enabled.])
fi
if $CHECK_STRUCTS; then
AC_DEFINE([CHECK_STRUCTS], [1],
[Define this to check whether someone updated the portable dumper
code after changing the layout of a structure that it uses.
If you change one of these structures, check that the pdumper.c
code is still valid, and update the pertinent hash in pdumper.c
by manually copying the hash from the newly-generated dmpstruct.h.])
fi
AC_SUBST([CHECK_STRUCTS])
if test x$ac_gc_check_stringbytes != x ; then
AC_DEFINE([GC_CHECK_STRING_BYTES], [1],
[Define this temporarily to hunt a bug. If defined, the size of
strings is redundantly recorded in sdata structures so that it can
be compared to the sizes recorded in Lisp strings.])
fi
if test x$ac_gc_check_string_overrun != x ; then
AC_DEFINE([GC_CHECK_STRING_OVERRUN], [1],
[Define this to check for short string overrun.])
fi
if test x$ac_gc_check_string_free_list != x ; then
AC_DEFINE([GC_CHECK_STRING_FREE_LIST], [1],
[Define this to check the string free list.])
fi
if test x$ac_glyphs_debug != x ; then
AC_DEFINE([GLYPH_DEBUG], [1],
[Define this to enable glyphs debugging code.])
fi
],[AS_IF([test "x$ac_enable_checking" != x],
[android_enable_checking=yes
export android_enable_checking])])
AC_ARG_ENABLE([gc-mark-trace],
[AS_HELP_STRING([--disable-gc-mark-trace],
[disable the mark trace buffer used for debugging the Emacs
garbage collector])],
[ac_enable_gc_mark_trace="${enableval}"],
[ac_enable_gc_mark_trace=yes])
if test "x$ac_enable_gc_mark_trace" = xyes ; then
AC_DEFINE([GC_REMEMBER_LAST_MARKED], [1],
[Define to 1 to enable GC mark trace buffer.])
fi
dnl The name of this option is unfortunate. It predates, and has no
dnl relation to, the "sampling-based elisp profiler" added in 24.3.
dnl Actually, it stops it working.
dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
AC_ARG_ENABLE([profiling],
[AS_HELP_STRING([--enable-profiling],
[build emacs with low-level, gprof profiling support.
Mainly useful for debugging Emacs itself. May not work on
all platforms. Stops profiler.el working.])],
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
PROFILING_CFLAGS="-DPROFILING=1 -pg"
else
PROFILING_CFLAGS=
fi
AC_SUBST([PROFILING_CFLAGS])
AC_ARG_ENABLE([autodepend],
[AS_HELP_STRING([--enable-autodepend],
[automatically generate dependencies to .h-files.
Requires gcc, enabled if found.])],
[ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
AC_ARG_ENABLE([gtk-deprecation-warnings],
[AS_HELP_STRING([--enable-gtk-deprecation-warnings],
[Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
[ac_enable_gtk_deprecation_warnings="${enableval}"],[])
BUILD_DETAILS=
AC_ARG_ENABLE([build-details],
[AS_HELP_STRING([--disable-build-details],
[Make the build more deterministic by omitting host
names, time stamps, etc. from the output.])],
[test "$enableval" = no && BUILD_DETAILS=--no-build-details])
AC_SUBST([BUILD_DETAILS])
# JAVA_PUSH_LINT(OPT)
# -------------------
# Check if javac supports the diagnostic flag -Xlint:OPT.
# If it does, add it to WARN_JAVAFLAGS.
AC_DEFUN([JAVA_PUSH_LINT],
[
AC_CACHE_CHECK([whether Java compiler accepts -Xlint:$1],
[emacs_cv_javac_knows_lint_$1],
AS_IF([rm -f conftest.class
cat << EOF > conftest.java
class conftest
{
}
EOF
("$JAVAC" -Xlint:$1 conftest.java 2>&AS_MESSAGE_LOG_FD) \
&& rm -f conftest.class], [emacs_cv_javac_knows_lint_$1=yes],
[emacs_cv_javac_knows_lint_$1=no]))
AS_IF([test "$emacs_cv_javac_knows_lint_$1" = "yes"],
[WARN_JAVAFLAGS="$WARN_JAVAFLAGS -Xlint:$1"])
])
# Start Android configuration. This is done in three steps:
# First, the SDK tools needed to build the Android package on the host
# are found.
# Then, configure is called inside itself with the NDK C and C++
# compilers, and the Makefiles generated, along with config.h, are
# renamed to end with .android.
# Finally, configure continues to configure the Emacs binary that will
# run on the host.
ANDROID=
JAVAC=
AAPT=
JARSIGNER=
APKSIGNER=
ZIPALIGN=
DX=
ANDROID_JAR=
ANDROID_ABI=
WARN_JAVAFLAGS=
ANDROID_SHARED_USER_ID=
ANDROID_SHARED_USER_NAME=
IS_D8_R8=
# This is a list of Makefiles that have alternative versions for
# Android.
android_makefiles="lib/Makefile lib/gnulib.mk lib-src/Makefile src/Makefile"
# This is whether or not to package mailutils into the executable.
emacs_use_mailutils=
AC_ARG_VAR([ANDROID_CC], [The Android C cross-compiler.])
AC_ARG_VAR([SDK_BUILD_TOOLS], [Name of directory holding Android SDK build-tools.])
AC_ARG_VAR([ANDROID_CFLAGS], [Flags given to the Android C cross-compiler.])
AC_ARG_VAR([JAVAC], [Java compiler path. Used for Android.])
AC_ARG_VAR([JARSIGNER], [Java package signer path. Used for Android.])
AC_ARG_VAR([APKSIGNER], [Android package signer path. Used for Android.])
AC_ARG_VAR([SDK_BUILD_TOOLS], [Path to the Android SDK build tools.])
AC_ARG_VAR([ZIP], [Path to the `zip' utility.])
if test "$with_android" = "yes"; then
AC_MSG_ERROR([Please specify the path to the Android.jar file, like so:
./configure --with-android=/path/to/android.jar
along with the path to the SDK build-tools (this is the directory with
tools such as aapt, dx, and aidl):
SDK_BUILD_TOOLS=/path/to/sdk-build-tools
The cross-compiler should then be specified:
ANDROID_CC=/path/to/armv7a-linux-androideabi19-clang
In addition, you may pass any special arguments to the cross-compiler
via the ANDROID_CFLAGS environment variable.])
elif test "$with_android" = "no" || test "$with_android" = ""; then
ANDROID=no
else
AC_CHECK_PROGS([JAVAC], [javac])
if test "$JAVAC" = ""; then
AC_MSG_ERROR([The Java compiler required to build Emacs was not found.
Please make sure `javac' can be found on your path, or alternatively specify
the path to your Java compiler before configuring Emacs, like so:
JAVAC=/opt/jdk/bin/javac ./configure --with-android])
fi
AC_CHECK_PROGS([JARSIGNER], [jarsigner])
if test "$JARSIGNER" = ""; then
AC_MSG_ERROR([The Java package signing utility was not found.
Please make sure `jarsigner' can be found on your path, or alternatively
specify its location before configuring Emacs, like so:
JARSIGNER=/opt/jdk/bin/jarsigner ./configure --with-android])
fi
AC_CACHE_CHECK([whether the Java compiler works],
[emacs_cv_working_javac],
AS_IF([rm -f conftest.class
cat << EOF > conftest.java
import android.app.Activity;
import android.os.Bundle;
class conftest extends Activity
{
@Override
public void
onCreate (Bundle savedInstanceState)
{
super.onCreate (savedInstanceState);
}
}
EOF
("$JAVAC" -classpath "$with_android" -target 1.7 -source 1.7 conftest.java \
-d . >&AS_MESSAGE_LOG_FD 2>&1) && test -s conftest.class && rm -f conftest.class],
[emacs_cv_working_javac=yes],
[emacs_cv_working_javac=no]))
if test "$emacs_cv_working_javac" = "no"; then
AC_MSG_ERROR([The Java compiler does not work, or you did not specify
a valid path to android.jar. See config.log for more details.])
fi
AC_CACHE_CHECK([whether android.jar is new enough],
[emacs_cv_android_v_or_later],
AS_IF([rm -f conftest.class
cat << EOF > conftest.java
import android.os.Build;
class conftest
{
private static int test = Build.VERSION_CODES.VANILLA_ICE_CREAM;
}
EOF
("$JAVAC" -classpath "$with_android" -target 1.7 -source 1.7 conftest.java \
-d . >&AS_MESSAGE_LOG_FD 2>&1) && test -s conftest.class && rm -f conftest.class],
[emacs_cv_android_v_or_later=yes],
[emacs_cv_android_v_or_later=no]))
if test "$emacs_cv_android_v_or_later" = "no"; then
AC_MSG_ERROR([Emacs must be built with an android.jar file produced for \
Android 15 (Vanilla Ice Cream) or later.])
fi
dnl See if the Java compiler supports the `--release' option which
dnl makes it check for and prevent using features introduced after
dnl Java 1.7.
AC_CACHE_CHECK([whether javac accepts --release 7],
[emacs_cv_javac_release_7], AS_IF([rm -f conftest.class
cat << EOF > conftest.java
class conftest
{
}
EOF
("$JAVAC" --release 7 conftest.java 2>&AS_MESSAGE_LOG_FD) \
&& rm -f conftest.class],
[emacs_cv_javac_release_7=yes],
[emacs_cv_javac_release_7=no]))
if test "$emacs_cv_javac_release_7" = "yes"; then
WARN_JAVAFLAGS="$WARN_JAVAFLAGS --release 7"
else
dnl If not, just make sure the generated bytecode is correct.
WARN_JAVAFLAGS="$WARN_JAVAFLAGS -target 1.7 -source 1.7"
fi
dnl Enable some useful Java linting options.
JAVA_PUSH_LINT([deprecation])
JAVA_PUSH_LINT([cast])
JAVA_PUSH_LINT([divzero])
JAVA_PUSH_LINT([nonempty])
JAVA_PUSH_LINT([empty])
JAVA_PUSH_LINT([finally])
JAVA_PUSH_LINT([overrides])
JAVA_PUSH_LINT([path])
JAVA_PUSH_LINT([serial])
JAVA_PUSH_LINT([unchecked])
# Get the name of the android.jar file.