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wayland/configure.ac
Emmanuel Gil Peyrot 6908c8c85a cursor: Use memfd_create() when available 
This (so-far) Linux-only API lets users create file descriptors purely
in memory, without any backing file on the filesystem and the race
condition which could ensue when unlink()ing it.

It also allows seals to be placed on the file, ensuring to every other
process that we won’t be allowed to shrink the contents, potentially
causing a SIGBUS when they try reading it.

This patch is best viewed with the -w option of git log -p.

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Simon Ser <contact@emersion.fr>
2019-07-21 09:06:43 +00:00

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AC_PREREQ([2.64])
m4_define([wayland_major_version], [1])
m4_define([wayland_minor_version], [17])
m4_define([wayland_micro_version], [90])
m4_define([wayland_version],
[wayland_major_version.wayland_minor_version.wayland_micro_version])
AC_INIT([wayland],
[wayland_version],
[https://gitlab.freedesktop.org/wayland/wayland/issues/],
[wayland],
[https://wayland.freedesktop.org/])
AC_SUBST([WAYLAND_VERSION_MAJOR], [wayland_major_version])
AC_SUBST([WAYLAND_VERSION_MINOR], [wayland_minor_version])
AC_SUBST([WAYLAND_VERSION_MICRO], [wayland_micro_version])
AC_SUBST([WAYLAND_VERSION], [wayland_version])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz subdir-objects])
AM_SILENT_RULES([yes])
# Check for programs
AC_PROG_CC
AC_PROG_CXX
AC_PROG_GREP
AM_PROG_AS
AC_PROG_NM
# check if we have C++ compiler. This is hacky workaround,
# for a reason why it is this way see
# http://lists.gnu.org/archive/html/bug-autoconf/2010-05/msg00001.html
have_cpp_compiler=yes
if ! which "$CXX" &>/dev/null; then
have_cpp_compiler=no
fi
AM_CONDITIONAL(ENABLE_CPP_TEST, test "x$have_cpp_compiler" = "xyes")
# Initialize libtool
LT_PREREQ([2.2])
LT_INIT([disable-static])
PKG_PROG_PKG_CONFIG()
AC_ARG_ENABLE([fatal-warnings],
AC_HELP_STRING([--enable-fatal-warnings],
[Build with -Werror]),
[enable_fatal_warnings=$enableval],
[enable_fatal_warnings=no])
AS_IF([test x"$enable_fatal_warnings" != "xno"], [
WERROR_CFLAGS="-Werror"
])
if test "x$GCC" = "xyes"; then
GCC_CFLAGS="$WERROR_CFLAGS -Wall -Wextra -Wno-unused-parameter -g -Wstrict-prototypes -Wmissing-prototypes -fvisibility=hidden"
fi
AC_SUBST(GCC_CFLAGS)
AC_CHECK_HEADERS([sys/prctl.h])
AC_CHECK_FUNCS([accept4 mkostemp posix_fallocate prctl memfd_create])
# *BSD don't have libdl, but they have its functions in libc
WESTON_SEARCH_LIBS([DL], [dl], [dlsym])
# OpenBSD doesn't have librt, but it has its functions in libc
WESTON_SEARCH_LIBS([RT], [rt], [clock_gettime])
AC_ARG_ENABLE([libraries],
[AC_HELP_STRING([--disable-libraries],
[Disable compilation of wayland libraries])],
[],
[enable_libraries=yes])
AC_ARG_WITH([host-scanner],
[AC_HELP_STRING([--with-host-scanner],
[Use installed wayland-scanner from host PATH during build])],
[],
[with_host_scanner=no])
AC_ARG_ENABLE([documentation],
[AC_HELP_STRING([--disable-documentation],
[Disable building the documentation])],
[],
[enable_documentation=yes])
AC_ARG_ENABLE([dtd-validation],
[AC_HELP_STRING([--disable-dtd-validation],
[Disable DTD validation of the protocol])],
[],
[enable_dtd_validation=yes])
AM_CONDITIONAL(USE_HOST_SCANNER, test "x$with_host_scanner" = xyes)
AM_CONDITIONAL(ENABLE_LIBRARIES, test "x$enable_libraries" = xyes)
AC_ARG_WITH(icondir, [ --with-icondir=<dir> Look for cursor icons here],
[ ICONDIR=$withval],
[ ICONDIR=${datadir}/icons])
AC_SUBST([ICONDIR])
if test "x$enable_libraries" = "xyes"; then
PKG_CHECK_MODULES(FFI, [libffi])
AC_CHECK_DECL(SFD_CLOEXEC,[],
[AC_MSG_ERROR("SFD_CLOEXEC is needed to compile wayland libraries")],
[[#include <sys/signalfd.h>]])
AC_CHECK_DECL(TFD_CLOEXEC,[],
[AC_MSG_ERROR("TFD_CLOEXEC is needed to compile wayland libraries")],
[[#include <sys/timerfd.h>]])
AC_CHECK_DECL(CLOCK_MONOTONIC,[],
[AC_MSG_ERROR("CLOCK_MONOTONIC is needed to compile wayland libraries")],
[[#include <time.h>]])
fi
PKG_CHECK_MODULES(EXPAT, [expat])
AM_CONDITIONAL([DTD_VALIDATION], [test "x$enable_dtd_validation" = "xyes"])
if test "x$enable_dtd_validation" = "xyes"; then
PKG_CHECK_MODULES(LIBXML, [libxml-2.0])
AC_DEFINE(HAVE_LIBXML, 1, [libxml-2.0 is available])
AC_CONFIG_LINKS([src/wayland.dtd.embed:protocol/wayland.dtd])
fi
AC_PATH_PROG(XSLTPROC, xsltproc)
AM_CONDITIONAL([HAVE_XSLTPROC], [test "x$XSLTPROC" != "x"])
AM_CONDITIONAL(BUILD_DOCS, [test x$enable_documentation = xyes])
if test "x$enable_documentation" = "xyes"; then
AC_PATH_PROG(DOXYGEN, doxygen)
if test "x$DOXYGEN" = "x"; then
AC_MSG_ERROR([Documentation build requested but doxygen not found. Install doxygen or disable the documentation using --disable-documentation])
fi
AC_MSG_CHECKING([for compatible doxygen version])
doxygen_version=`$DOXYGEN --version`
AS_VERSION_COMPARE([$doxygen_version], [1.6.0],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([Doxygen $doxygen_version too old. Doxygen 1.6+ required for documentation build. Install required doxygen version or disable the documentation using --disable-documentation])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([yes])])
AC_PATH_PROG(XMLTO, xmlto)
if test "x$XMLTO" = "x"; then
AC_MSG_ERROR([Documentation build requested but xmlto not found. Install xmlto or disable the documentation using --disable-documentation])
fi
AC_PATH_PROG(DOT, dot)
if test "x$DOT" = "x"; then
AC_MSG_ERROR([Documentation build requested but graphviz's dot not found. Install graphviz or disable the documentation using --disable-documentation])
fi
AC_MSG_CHECKING([for compatible dot version])
dot_version=`$DOT -V 2>&1|$GREP -o ['[0-9]*\.[0-9]*\.[0-9]*']`
AS_VERSION_COMPARE([$dot_version], [2.26.0],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([Graphviz dot $dot_version too old. Graphviz 2.26+ required for documentation build. Install required graphviz version or disable the documentation using --disable-documentation])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([yes])])
AC_MSG_CHECKING([for docbook stylesheets])
DOCS_STYLESHEET=http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
AC_PATH_PROGS_FEATURE_CHECK([XSLTPROC_TMP], [xsltproc],
AS_IF([`"$ac_path_XSLTPROC_TMP" --nonet "$DOCS_STYLESHEET" > /dev/null 2>&1`],
[HAVE_DOCS_STYLESHEET=yes]))
if test "x$HAVE_DOCS_STYLESHEET" != "xyes"; then
AC_MSG_RESULT([no])
AC_MSG_ERROR([Documentation build requested but docbook-xsl stylesheets are not found. Install the docbook-xsl package or disable the documentation using --disable-documentation])
fi
AC_MSG_RESULT([yes])
AC_SUBST(DOCS_STYLESHEET)
AC_CONFIG_FILES([
doc/doxygen/wayland.doxygen
])
fi
AM_CONDITIONAL([HAVE_XMLTO], [test "x$XMLTO" != "x"])
AC_CONFIG_FILES([Makefile
cursor/wayland-cursor.pc
cursor/wayland-cursor-uninstalled.pc
doc/Makefile
doc/publican/Makefile
doc/doxygen/Makefile
doc/man/Makefile
egl/wayland-egl.pc
egl/wayland-egl-backend.pc
src/wayland-server-uninstalled.pc
src/wayland-client-uninstalled.pc
src/wayland-scanner-uninstalled.pc
src/wayland-server.pc
src/wayland-client.pc
src/wayland-scanner.pc
src/wayland-version.h])
AC_OUTPUT
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