kmscon/configure.ac
David Herrmann f9de068a09 build: update autotools logic and add "wlterm" application
Sorry for the big commit, but I was working on the wlterm application and
then thought I can rework the whole configure-logic again. This mainly
renames all build-defines to BUILD_DEFINE_* and BUILD_HAVE_* and allows
specifying which applications to build via --enable-kmscon/--enable-wlterm
and similar.

wlterm is a new application which is a native wayland client with no
external dependencies. It serves several purposes:
  * It uses TSM (not yet implemented, but will come soon) to create a
    console independent from kmscon. This shows how TSM can easily be used
    to create independent terminal emulators.
  * It is a native wayland application (probably the first independent
    wayland app so far?) and is used to test how well the wayland API
    works. As wayland is still under heavy development, we need more
    application-writers who report back whether the wayland-API makes
    sense to them and whether it works correctly.
  * A proper terminal-emulator for wayland! There is currently no proper
    emulator so we really need something that we can work with.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
2012-09-26 18:56:41 +02:00

725 lines
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#
# Kmscon - build configuration script
# Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
#
AC_PREREQ(2.68)
AC_INIT([kmscon], [4])
AC_SUBST(PACKAGE_URL, [https://github.com/dvdhrm/kmscon])
AC_CONFIG_SRCDIR([src/main.c])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects dist-bzip2 no-dist-gzip tar-pax -Wall -Werror])
AM_SILENT_RULES([yes])
#
# Don't add a default "-g -O2" if CFLAGS wasn't specified. For debugging it is
# often more convenient to have "-g -O0". You can still override it by
# explicitely setting it on the command line.
#
: ${CFLAGS=""}
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CC
AC_PROG_CC_C99
AM_PROG_CC_C_O
AM_PROG_AR
LT_PREREQ(2.2)
LT_INIT
#
# pkg-config dependencies
# This unconditionally checks for all dependencies even if they are disabled. We
# later look whether all required depedencies are met and finish the
# configuration. We group similar packages into one logical group here to avoid
# having variables for each single library.
# This, however, makes ./configure output very unintuitive error messages if a
# package is not found so we must make sure we print more verbose messages
# ourself.
#
PKG_CHECK_MODULES([SYSTEMD], [libsystemd-login],
[have_systemd=yes], [have_systemd=no])
PKG_CHECK_MODULES([UDEV], [libudev],
[have_udev=yes], [have_udev=no])
PKG_CHECK_MODULES([DBUS], [dbus-1],
[have_dbus=yes], [have_dbus=no])
PKG_CHECK_MODULES([DRM], [libdrm],
[have_drm=yes], [have_drm=no])
PKG_CHECK_MODULES([GBM], [gbm],
[have_gbm=yes], [have_gbm=no])
PKG_CHECK_MODULES([EGL], [egl],
[have_egl=yes], [have_egl=no])
PKG_CHECK_MODULES([GLES2], [glesv2],
[have_gles2=yes], [have_gles2=no])
PKG_CHECK_MODULES([XKBCOMMON], [xkbcommon],
[have_xkbcommon=yes], [have_xkbcommon=no])
PKG_CHECK_MODULES([FREETYPE2], [freetype2 fontconfig],
[have_freetype2=yes], [have_freetype2=no])
PKG_CHECK_MODULES([PANGO], [pango pangoft2],
[have_pango=yes], [have_pango=no])
PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-server wayland-cursor],
[have_wayland=yes], [have_wayland=no])
#
# Parse arguments for applications
# Parse all command-line arguments that enable or disable build of applications.
# This allows us to compute which dependencies we need.
#
AC_MSG_CHECKING([whether to compile eloop])
AC_ARG_ENABLE([eloop],
[AS_HELP_STRING([--enable-eloop],
[build eloop library])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to compile TSM])
AC_ARG_ENABLE([tsm],
[AS_HELP_STRING([--enable-tsm],
[build tsm library])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to compile uterm])
AC_ARG_ENABLE([uterm],
[AS_HELP_STRING([--enable-uterm],
[build uterm library])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to compile kmscon])
AC_ARG_ENABLE([kmscon],
[AS_HELP_STRING([--disable-kmscon],
[do not build kmscon])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to build wlterm])
AC_ARG_ENABLE([wlterm],
[AS_HELP_STRING([--enable-wlterm],
[build wlterm])])
AC_MSG_RESULT([ok])
#
# Parse depedency arguments
# This parses all command-line arguments to check for which dependencies should
# be used and how the applications should be built.
#
AC_MSG_CHECKING([whether to use systemd for multi-seat support])
AC_ARG_ENABLE([systemd],
[AS_HELP_STRING([--enable-systemd],
[enable multi-seat support with systemd])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use udev for device hotplug support])
AC_ARG_ENABLE([udev],
[AS_HELP_STRING([--enable-udev],
[enable device hotplug support with udev])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use dbus for IPC])
AC_ARG_ENABLE([dbus],
[AS_HELP_STRING([--enable-dbus],
[enable dbus IPC])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use uterm fbdev video backend])
AC_ARG_ENABLE([fbdev],
[AS_HELP_STRING([--enable-fbdev],
[enable uterm fbdev video backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use uterm drm video backend])
AC_ARG_ENABLE([drm],
[AS_HELP_STRING([--enable-drm],
[enable uterm drm video backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to provide OpenGLES2 support])
AC_ARG_ENABLE([gles2],
[AS_HELP_STRING([--enable-gles2],
[provide uterm OpenGLES2 support])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use xkbcommon keyboard backend])
AC_ARG_ENABLE([xkbcommon],
[AS_HELP_STRING([--disable-xkbcommon],
[disable xkbcommon keyboard backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use static unifont backend])
AC_ARG_ENABLE([unifont],
[AS_HELP_STRING([--enable-unifont],
[enable static unifont font backend (GPL)])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use static 8x16 font backend])
AC_ARG_ENABLE([f8x16],
[AS_HELP_STRING([--disable-f8x16],
[disable static 8x16 font backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use freetype2 font backend])
AC_ARG_ENABLE([freetype2],
[AS_HELP_STRING([--disable-freetype2],
[disable freetype2 font backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use pango font backend])
AC_ARG_ENABLE([pango],
[AS_HELP_STRING([--disable-pango],
[disable pango font backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use bblit rendering backend])
AC_ARG_ENABLE([bblit],
[AS_HELP_STRING([--disable-bblit],
[disable bblit rendering backend])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to use bbulk rendering backend])
AC_ARG_ENABLE([bbulk],
[AS_HELP_STRING([--disable-bbulk],
[disable bbulk rendering backend])])
AC_MSG_RESULT([ok])
#
# Parse miscellaneous arguments
# These don't belong into the categories above for several reason so they are
# handled specially.
# They configure compiler options and similar.
#
AC_MSG_CHECKING([whether to build with debugging on])
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],
[whether to build with debugging on])])
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([whether to disable code optimizations])
AC_ARG_ENABLE([optimizations],
[AS_HELP_STRING([--disable-optimizations],
[whether to disable code optimizations])])
AC_MSG_RESULT([ok])
#
# Debug mode and code optimizations
# In debug mode we compile with -g and enable several debug-messages and flags.
# With optimizations (default), we add -O2 to compile-flags.
#
debug_enabled=no
if test x$enable_debug = xyes ; then
debug_enabled=yes
fi
optimizations_enabled=no
if test ! x$enable_optimizations = xno ; then
optimizations_enabled=yes
fi
if test x$debug_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_DEBUG], [1],
[Enable debug mode])
else
AC_DEFINE([NDEBUG], [1], [No Debug])
fi
AM_CONDITIONAL([BUILD_ENABLE_DEBUG],
[test x$debug_enabled = xyes])
AM_CONDITIONAL([BUILD_ENABLE_OPTIMIZATIONS],
[test x$optimizations_enabled = xyes])
#
# Main applications
# This checks which applications to build so we can optionally disable unused
# dependencies below.
#
# Dependency Calculations
# The first thing we do is checking which applications to build. Then we
# forcibly enable all libraries that are needed by these and then we forcibly
# enable all other source-code dependecies.
#
# The "enable_XY" flag is user input that is set to "yes" if they enabled it
# explicitly, "no" if they disabled it explicitly or "" (empty) if they did
# not specify it explicitly. In the latter case we enable it if all dependencies
# are met, otherwise, we disable it. This does not work for applications,
# though. If an application is not specified explicitly by the user, then we
# force the default value.
# An application also forces all _hard_ dependencies to "yes" and so fails if
# they cannot be met.
#
kmscon_enabled=no
if test ! x$enable_kmscon = xno ; then
kmscon_enabled=yes
enable_eloop=yes
enable_tsm=yes
enable_uterm=yes
fi
AM_CONDITIONAL([BUILD_ENABLE_KMSCON],
[test x$kmscon_enabled = xyes])
wlterm_enabled=no
if test x$enable_wlterm = xyes ; then
wlterm_enabled=yes
enable_eloop=yes
enable_tsm=yes
enable_wayland=yes
fi
AM_CONDITIONAL([BUILD_ENABLE_WLTERM],
[test x$wlterm_enabled = xyes])
uterm_enabled=no
if test x$enable_uterm = xyes ; then
uterm_enabled=yes
eloop_enabled=yes
fi
AM_CONDITIONAL([BUILD_ENABLE_UTERM],
[test x$uterm_enabled = xyes])
eloop_enabled=no
if test x$enable_eloop = xyes ; then
eloop_enabled=yes
fi
AM_CONDITIONAL([BUILD_ENABLE_ELOOP],
[test x$eloop_enabled = xyes])
tsm_enabled=no
if test x$enable_tsm = xyes ; then
tsm_enabled=yes
fi
AM_CONDITIONAL([BUILD_ENABLE_TSM],
[test x$tsm_enabled = xyes])
#
# Systemd dependency
# We can optionally use systemd for multi-seat support. If systemd is not
# available or the system was not started with systemd, we simply fall back to
# single-seat mode.
#
systemd_enabled=no
if test ! x$enable_systemd = xno ; then
if test x$have_systemd = xyes ; then
systemd_enabled=yes
elif test x$enable_systemd = xyes ; then
AC_ERROR([systemd libraries not found for multi-seat support])
fi
fi
if test x$systemd_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_SYSTEMD], [1],
[Use systemd for multi-seat support])
else
SYSTEMD_CFLAGS=""
SYSTEMD_LIBS=""
fi
#
# Udev dependency
# For hotplugging support we need udev to notify us about system events. If udev
# is not available, we simply fall back to static mode. Periodic scanning is
# also supported.
#
udev_enabled=no
if test ! x$enable_udev = xno ; then
if test x$have_udev = xyes ; then
udev_enabled=yes
elif test x$enable_udev = xyes ; then
AC_ERROR([udev libraries not found for device hotplug support])
fi
fi
if test x$udev_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_UDEV], [1],
[Use udev for device hotplug support])
else
UDEV_CFLAGS=""
UDEV_LIBS=""
fi
#
# DBus dependency
# For IPC mechanisms we use DBus. Especially multi-seat enabled multi-session
# capable applications need DBus to manage application and terminal switching.
#
dbus_enabled=no
if test x$enable_dbus = xyes ; then
if test x$have_dbus = xyes ; then
dbus_enabled=yes
elif test x$enable_dbus = xyes; then
AC_ERROR([dbus libraries not found])
fi
fi
if test x$dbus_enabled = xyes; then
AC_DEFINE([BUILD_ENABLE_DBUS], [1],
[Use dbus for IPC])
else
DBUS_CFLAGS=""
DBUS_LIBS=""
fi
AM_CONDITIONAL([BUILD_ENABLE_DBUS], [test x$dbus_enabled = xyes])
#
# Uterm fbdev backend
# This checks whether the fbdev backend was requested and enables it then. There
# are no special dependencies for it except the kernel headers.
# TODO: check for kernel headers here
#
fbdev_enabled=no
if test ! x$enable_fbdev = xno ; then
fbdev_enabled=yes
fi
if test x$fbdev_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_FBDEV], [1],
[Use uterm fbdev video backend])
fi
AM_CONDITIONAL([BUILD_ENABLE_FBDEV], [test x$fbdev_enabled = xyes])
#
# Uterm drm backend
# This checks whether libdrm is available and some combination of libgbm, egl
# and gl or glesv2. If it is not available, then the drm backend is simply not
# built.
#
dumb_enabled=no
drm_enabled=no
gles2_enabled=no
if test ! x$enable_drm = xno ; then
if test x$have_drm = xyes ; then
dumb_enabled=yes
fi
if test ! x$enable_gles2 = xno ; then
if test x$have_drm = xyes -a x$have_gbm = xyes -a x$have_egl = xyes ; then
if test x$have_gles2 = xyes ; then
drm_enabled=yes
gles2_enabled=yes
fi
fi
fi
if test x$enable_drm = xyes -a x$dumb_enabled = xno ; then
AC_ERROR([drm library not found for uterm dumb drm backend])
fi
if test x$enable_gles2 = xyes -a x$drm_enabled = xno ; then
AC_ERROR([drm, gbm, egl, gl or gles2 libraries not found for uterm drm backend])
fi
fi
if test x$dumb_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_DUMB], [1],
[Use uterm dumb drm video backend])
if test x$drm_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_DRM], [1],
[Use uterm DRM video backend])
else
GBM_CFLAGS=""
GBM_LIBS=""
EGL_CFLAGS=""
EGL_LIBS=""
fi
else
DRM_CFLAGS=""
DRM_LIBS=""
GBM_CFLAGS=""
GBM_LIBS=""
EGL_CFLAGS=""
EGL_LIBS=""
fi
if test x$gles2_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_GLES2], [1],
[Use OpenGLESv2 as drawing backend])
else
GLES2_CFLAGS=""
GLES2_LIBS=""
fi
AM_CONDITIONAL([BUILD_ENABLE_DUMB], [test x$dumb_enabled = xyes])
AM_CONDITIONAL([BUILD_ENABLE_DRM], [test x$drm_enabled = xyes])
AM_CONDITIONAL([BUILD_ENABLE_GLES2], [test x$gles2_enabled = xyes])
# check for gbm_bo_get_stride() function, otherwise gbm_bo_get_pitch() is used
if test x$have_gbm = xyes ; then
save_CFLAGS="$CFLAGS"
save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GBM_CFLAGS $DRM_CFLAGS"
LIBS="$LIBS $GBM_LIBS $DRM_LIBS"
AC_CHECK_LIB([gbm],
[gbm_bo_get_stride],
[AC_DEFINE([BUILD_HAVE_GBM_BO_GET_STRIDE],
[1],
[Define to 1 if your libgbm provides gbm_bo_get_stride])])
CFLAGS="$save_CFLAGS"
LIBS="$save_LIBS"
fi
#
# xkbcommon keyboard backend
# This checks for the xkbcommon library for keyboard handling in uterm. If it is
# not available, we use a dumb-keyboard backend as fall-back.
#
xkbcommon_enabled=no
if test ! x$enable_xkbcommon = xno ; then
if test x$have_xkbcommon = xyes ; then
xkbcommon_enabled=yes
elif test x$enable_xkbcommon = xyes ; then
AC_ERROR([xkbcommon not found for keyboard backend])
fi
fi
if test x$xkbcommon_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_XKBCOMMON], [1],
[Use xkbcommon as input keyboard handling backend])
else
XKBCOMMON_CFLAGS=""
XKBCOMMON_LIBS=""
fi
AM_CONDITIONAL([BUILD_ENABLE_XKBCOMMON], [test x$xkbcommon_enabled = xyes])
#
# Font backends
# This checks for the unifont, 8x16, freetype2 and pango font backends and
# enables them if requested and available.
#
# Please note that the Unifont-data is GPL'ed and we compile this statically
# into our application. I do not consider this a "derivative" but a lawyer may
# disagree. So please make sure you enable this only if you use the GPL as
# license for kmscon.
#
unifont_enabled=no
if test x$enable_unifont = xyes ; then
unifont_enabled=yes
fi
if test x$unifont_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_UNIFONT], [1],
[Use static unifont backend])
fi
AM_CONDITIONAL([BUILD_ENABLE_UNIFONT], [test x$unifont_enabled = xyes])
f8x16_enabled=no
if test ! x$enable_f8x16 = xno ; then
f8x16_enabled=yes
fi
if test x$f8x16_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_8X16], [1],
[Use static 8x16 font backend])
fi
AM_CONDITIONAL([BUILD_ENABLE_8X16], [test x$f8x16_enabled = xyes])
freetype2_enabled=no
if test ! x$enable_freetype2 = xno ; then
if test x$have_freetype2 = xyes ; then
freetype2_enabled=yes
elif test x$enable_freetype2 = xyes ; then
AC_ERROR([freetype2/fontconfig not found for freetype2 backend])
fi
fi
if test x$freetype2_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_FREETYPE2], [1],
[Use freetype2 as font backend])
else
FREETYPE2_CFLAGS=""
FREETYPE2_LIBS=""
fi
AM_CONDITIONAL([BUILD_ENABLE_FREETYPE2], [test x$freetype2_enabled = xyes])
pango_enabled=no
if test ! x$enable_pango = xno ; then
if test x$have_pango = xyes ; then
pango_enabled=yes
elif test x$enable_pango = xyes ; then
AC_ERROR([pango not found for pango font backend])
fi
fi
if test x$pango_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_PANGO], [1],
[Use pango as font backend])
else
PANGO_CFLAGS=""
PANGO_LIBS=""
fi
AM_CONDITIONAL([BUILD_ENABLE_PANGO], [test x$pango_enabled = xyes])
#
# BBlit Rendering backend
#
bblit_enabled=no
if test ! x$enable_bblit = xno ; then
bblit_enabled=yes
fi
if test x$bblit_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_BBLIT], [1],
[Use bblit rendering backend])
fi
AM_CONDITIONAL([BUILD_ENABLE_BBLIT], [test x$bblit_enabled = xyes])
#
# BBulk Rendering backend
#
bbulk_enabled=no
if test ! x$enable_bbulk = xno ; then
bbulk_enabled=yes
fi
if test x$bbulk_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_BBULK], [1],
[Use bbulk rendering backend])
fi
AM_CONDITIONAL([BUILD_ENABLE_BBULK], [test x$bbulk_enabled = xyes])
#
# OpenGL Texture rendering backend
# This is not really an option but automatically enabled if OpenGLES2 support
# was selected.
#
gltex_enabled=no
if test x$gles2_enabled = xyes ; then
gltex_enabled=yes
fi
#
# Wayland
# This checks whether the wayland libraries are needed and available.
#
wayland_enabled=no
if test ! x$enable_wayland = xno ; then
if test x$have_wayland = xyes ; then
wayland_enabled=yes
elif test x$enable_wayland = xyes ; then
AC_ERROR([wayland libraries not found])
fi
fi
if test x$wayland_enabled = xyes ; then
AC_DEFINE([BUILD_ENABLE_WAYLAND], [1],
[Enable wayland backends])
else
WAYLAND_CFLAGS=""
WAYLAND_LIBS=""
fi
#
# Makefile vars
# After everything is configured, we correctly substitute the values for the
# makefiles.
#
AC_SUBST(SYSTEMD_CFLAGS)
AC_SUBST(SYSTEMD_LIBS)
AC_SUBST(DBUS_CFLAGS)
AC_SUBST(DBUS_LIBS)
AC_SUBST(DRM_CFLAGS)
AC_SUBST(DRM_LIBS)
AC_SUBST(EGL_CFLAGS)
AC_SUBST(EGL_LIBS)
AC_SUBST(GBM_CFLAGS)
AC_SUBST(GBM_LIBS)
AC_SUBST(GLES2_CFLAGS)
AC_SUBST(GLES2_LIBS)
AC_SUBST(UDEV_CFLAGS)
AC_SUBST(UDEV_LIBS)
AC_SUBST(XKBCOMMON_CFLAGS)
AC_SUBST(XKBCOMMON_LIBS)
AC_SUBST(FREETYPE2_CFLAGS)
AC_SUBST(FREETYPE2_LIBS)
AC_SUBST(PANGO_CFLAGS)
AC_SUBST(PANGO_LIBS)
AC_SUBST(WAYLAND_CFLAGS)
AC_SUBST(WAYLAND_LIBS)
AC_CONFIG_FILES([Makefile libeloop.pc libtsm.pc libuterm.pc])
AC_OUTPUT
#
# Configuration output
# Show configuration to the user so they can check whether everything was
# configured as expected.
#
AC_MSG_NOTICE([Build configuration:
Applications and libraries:
kmscon: $kmscon_enabled
wlterm: $wlterm_enabled
uterm: $uterm_enabled
eloop: $eloop_enabled
tsm: $tsm_enabled
Miscellaneous options:
debug: $debug_enabled
optimizations: $optimizations_enabled
Optional dependencies:
systemd: $systemd_enabled
udev: $udev_enabled
dbus: $dbus_enabled
xkbcommon: $xkbcommon_enabled
libuterm video backends:
fbdev: $fbdev_enabled
dumb drm: $dumb_enabled
drm: $drm_enabled
OpenGLES2: $gles2_enabled
font backends:
unifont: $unifont_enabled
8x16: $f8x16_enabled
freetype2: $freetype2_enabled
pango: $pango_enabled
rendering backends:
bblit: $bblit_enabled
bbulk: $bbulk_enabled
gltex: $gltex_enabled
Run "make" to start compilation process])