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dnl GNU Guix --- Functional package management for GNU
dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
dnl Copyright © 2014 Mark H Weaver <mhw@netris.org>
dnl Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
dnl
dnl This file is part of GNU Guix.
dnl
dnl GNU Guix is free software; you can redistribute it and/or modify it
dnl under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or (at
dnl your option) any later version.
dnl
dnl GNU Guix is distributed in the hope that it will be useful, but
dnl 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 Guix. If not, see <http://www.gnu.org/licenses/>.
dnl GUIX_SYSTEM_TYPE
dnl
dnl Determine the Guix host system type, and store it in the
dnl `guix_system' variable.
AC_DEFUN([GUIX_SYSTEM_TYPE], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_PATH_PROG([SED], [sed])
AC_ARG_WITH(system, AC_HELP_STRING([--with-system=SYSTEM],
[Platform identifier (e.g., `i686-linux').]),
[guix_system="$withval"],
[case "$host_cpu" in
i*86)
machine_name="i686";;
amd64)
machine_name="x86_64";;
arm|armv[[7-9]]*)
# Here we want to exclude CPUs such as "armv6l". On ARMv7
# machines, we normally get "armv7l". However, in Guix, we
# configure with --build=arm-unknown-linux-gnueabihf, leading
# to just "arm", so we also have to allow it.
#
# TODO: If not cross-compiling, add a sanity check to make
# sure this build machine has the needed features to
# support executables compiled using our armhf gcc,
# configured with:
# --with-arch=armv7-a
# --with-float=hard
# --with-mode=thumb
# --with-fpu=vfpv3-d16
machine_name="armhf";;
*)
machine_name="$host_cpu";;
esac
case "$host_os" in
linux-gnu*)
# For backward compatibility, strip the `-gnu' part.
guix_system="$machine_name-linux";;
gnu*)
# Always use i586 for GNU/Hurd.
guix_system="i586-gnu";;
*)
# Strip the version number from names such as `gnu0.3',
# `darwin10.2.0', etc.
guix_system="$machine_name-`echo $host_os | "$SED" -e's/[0-9.]*$//g'`";;
esac])
AC_MSG_CHECKING([for the Guix system type])
AC_MSG_RESULT([$guix_system])
AC_SUBST([guix_system])
])
dnl GUIX_ASSERT_SUPPORTED_SYSTEM
dnl
dnl Assert that this is a system to which the distro is ported.
AC_DEFUN([GUIX_ASSERT_SUPPORTED_SYSTEM], [
AC_REQUIRE([GUIX_SYSTEM_TYPE])
AC_ARG_WITH([courage], [AC_HELP_STRING([--with-courage],
[Assert that even if this platform is unsupported, you will be
courageous and port the GNU System distribution to it (see
"GNU Distribution" in the manual.)])],
[guix_courageous="$withval"],
[guix_courageous="no"])
# Currently only Linux-based systems are supported, and only on some
# platforms.
case "$guix_system" in
x86_64-linux|i686-linux|armhf-linux|aarch64-linux|mips64el-linux)
;;
*)
if test "x$guix_courageous" = "xyes"; then
AC_MSG_WARN([building Guix on `$guix_system', which is not supported])
else
AC_MSG_ERROR([`$guix_system' is not a supported platform.
See "GNU Distribution" in the manual, or try `--with-courage'.])
fi
;;
esac
])
dnl GUIX_ASSERT_GUILE_FEATURES FEATURES
dnl
dnl Assert that FEATURES are provided by $GUILE.
AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
for guix_guile_feature in $1
do
AC_MSG_CHECKING([whether $GUILE provides feature '$guix_guile_feature'])
if "$GUILE" -c "(exit (provided? '$guix_guile_feature))"
then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
AC_MSG_ERROR([$GUILE does not support feature '$guix_guile_feature', which is required.])
fi
done
])
dnl GUIX_ASSERT_SYNTAX_OBJECT_EQUAL
dnl
dnl Guile 2.2.1 was a brown-paper-bag release where 'equal?' wouldn't work
dnl for syntax objects, which broke gexps. Unfortunately Fedora 25 provides it.
dnl Reject it.
AC_DEFUN([GUIX_ASSERT_SYNTAX_OBJECT_EQUAL], [
AC_CACHE_CHECK([whether 'equal?' works for syntax objects],
[ac_cv_guix_syntax_object_equal],
[if "$GUILE" -c '(exit (equal? (syntax x) (syntax x)))'
then
ac_cv_guix_syntax_object_equal=yes
else
ac_cv_guix_syntax_object_equal=no
fi])
if test "x$ac_cv_guix_syntax_object_equal" != xyes; then
# This bug was present in Guile 2.2.1 only.
AC_MSG_ERROR(['equal?' does not work for syntax object; upgrade to Guile 2.2.2 or later.])
fi
])
dnl GUIX_CHECK_GUILE_SSH
dnl
dnl Check whether a recent-enough Guile-SSH is available.
AC_DEFUN([GUIX_CHECK_GUILE_SSH], [
dnl Check whether 'channel-send-eof' (introduced in 0.10.2) is present.
AC_CACHE_CHECK([whether Guile-SSH is available and recent enough],
[guix_cv_have_recent_guile_ssh],
[GUILE_CHECK([retval],
[(and (@ (ssh channel) channel-send-eof)
(@ (ssh popen) open-remote-pipe)
(@ (ssh dist node) node-eval))])
if test "$retval" = 0; then
guix_cv_have_recent_guile_ssh="yes"
else
guix_cv_have_recent_guile_ssh="no"
fi])
])
dnl GUIX_CHECK_GUILE_SQLITE3
dnl
dnl Check whether a recent-enough Guile-Sqlite3 is available.
AC_DEFUN([GUIX_CHECK_GUILE_SQLITE3], [
dnl Check whether 'sqlite-bind-arguments' is available. It was introduced
dnl in February 2018:
dnl <https://notabug.org/civodul/guile-sqlite3/commit/1cd1dec96a9999db48c0ff45bab907efc637247f>.
AC_CACHE_CHECK([whether Guile-Sqlite3 is available and recent enough],
[guix_cv_have_recent_guile_sqlite3],
[GUILE_CHECK([retval],
[(@ (sqlite3) sqlite-bind-arguments)])
if test "$retval" = 0; then
guix_cv_have_recent_guile_sqlite3="yes"
else
guix_cv_have_recent_guile_sqlite3="no"
fi])
])
dnl GUIX_TEST_ROOT_DIRECTORY
AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [
AC_CACHE_CHECK([for unit test root directory],
[ac_cv_guix_test_root],
[ac_cv_guix_test_root="`pwd`/test-tmp"])
])
dnl 'BINPRM_BUF_SIZE' constant in Linux (we leave room for the trailing zero.)
dnl The Hurd has a limit of about a page (see exec/hashexec.c.)
m4_define([LINUX_HASH_BANG_LIMIT], 127)
dnl Hardcoded 'sun_path' length in <sys/un.h>.
m4_define([SOCKET_FILE_NAME_LIMIT], 108)
dnl GUIX_SOCKET_FILE_NAME_LENGTH
AC_DEFUN([GUIX_SOCKET_FILE_NAME_LENGTH], [
AC_CACHE_CHECK([the length of the installed socket file name],
[ac_cv_guix_socket_file_name_length],
[ac_cv_guix_socket_file_name_length="`echo -n "$guix_localstatedir/guix/daemon-socket/socket" | wc -c`"])
])
dnl GUIX_TEST_SOCKET_FILE_NAME_LENGTH
AC_DEFUN([GUIX_TEST_SOCKET_FILE_NAME_LENGTH], [
AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
AC_CACHE_CHECK([the length of the socket file name used in tests],
[ac_cv_guix_test_socket_file_name_length],
[ac_cv_guix_test_socket_file_name_length="`echo -n "$ac_cv_guix_test_root/var/123456/daemon-socket/socket" | wc -c`"])
])
dnl GUIX_HASH_BANG_LENGTH
AC_DEFUN([GUIX_HASH_BANG_LENGTH], [
AC_CACHE_CHECK([the length of a typical hash bang line],
[ac_cv_guix_hash_bang_length],
[ac_cv_guix_hash_bang_length=`echo -n "$storedir/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
])
dnl GUIX_TEST_HASH_BANG_LENGTH
AC_DEFUN([GUIX_TEST_HASH_BANG_LENGTH], [
AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
AC_CACHE_CHECK([the length of a hash bang line used in tests],
[ac_cv_guix_test_hash_bang_length],
[ac_cv_guix_test_hash_bang_length=`echo -n "$ac_cv_guix_test_root/store/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
])
dnl GUIX_CHECK_FILE_NAME_LIMITS
dnl
dnl GNU/Linux has a couple of silly limits that we can easily run into.
dnl Make sure everything is fine with the current settings. Set $1 to
dnl 'yes' if tests can run, 'no' otherwise.
AC_DEFUN([GUIX_CHECK_FILE_NAME_LIMITS], [
AC_REQUIRE([GUIX_SOCKET_FILE_NAME_LENGTH])
AC_REQUIRE([GUIX_TEST_SOCKET_FILE_NAME_LENGTH])
AC_REQUIRE([GUIX_HASH_BANG_LENGTH])
AC_REQUIRE([GUIX_TEST_HASH_BANG_LENGTH])
if test "$ac_cv_guix_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
AC_MSG_ERROR([socket file name would exceed the maxium allowed length])
fi
if test "$ac_cv_guix_test_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
AC_MSG_WARN([socket file name limit may be exceeded when running tests])
fi
$1=yes
if test "$ac_cv_guix_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
$1=no
AC_MSG_ERROR([store directory '$storedir' would lead to overly long hash-bang lines])
fi
if test "$ac_cv_guix_test_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
$1=no
AC_MSG_WARN([test directory '$ac_cv_guix_test_root' may lead to overly long hash-bang lines])
fi
])
dnl GUIX_CHECK_CXX11
dnl
dnl Check whether the C++ compiler can compile a typical C++11 program.
AC_DEFUN([GUIX_CHECK_CXX11], [
AC_REQUIRE([AC_PROG_CXX])
AC_CACHE_CHECK([whether $CXX supports C++11],
[ac_cv_guix_cxx11_support],
[save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="-std=c++11 $CXXFLAGS"
AC_COMPILE_IFELSE([
AC_LANG_SOURCE([
#include <functional>
std::function<int(int)>
return_plus_lambda (int x)
{
auto result = [[&]](int y) {
return x + y;
};
return result;
}
])],
[ac_cv_guix_cxx11_support=yes],
[ac_cv_guix_cxx11_support=no])
CXXFLAGS="$save_CXXFLAGS"
])
])
dnl GUIX_ASSERT_CXX11
dnl
dnl Error out if the C++ compiler cannot compile C++11 code.
AC_DEFUN([GUIX_ASSERT_CXX11], [
GUIX_CHECK_CXX11
if test "x$ac_cv_guix_cxx11_support" != "xyes"; then
AC_MSG_ERROR([C++ compiler '$CXX' does not support the C++11 standard])
fi
])
dnl GUIX_LIBGCRYPT_LIBDIR VAR
dnl
dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR.
AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [
AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config])
AC_CACHE_CHECK([libgcrypt's library directory],
[guix_cv_libgcrypt_libdir],
[if test "x$LIBGCRYPT_CONFIG" != "x"; then
guix_cv_libgcrypt_libdir=`$LIBGCRYPT_CONFIG --libs | grep -e -L | sed -e "s/.*-L\([[^ ]]\+\)[[[:blank:]]]\+-lgcrypt.*/\1/g"`
else
guix_cv_libgcrypt_libdir=""
fi])
$1="$guix_cv_libgcrypt_libdir"
])
dnl GUIX_LIBZ_LIBDIR VAR
dnl
dnl Attempt to determine libz's LIBDIR; store the result in VAR.
AC_DEFUN([GUIX_LIBZ_LIBDIR], [
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
AC_CACHE_CHECK([zlib's library directory],
[guix_cv_libz_libdir],
[guix_cv_libz_libdir="`$PKG_CONFIG zlib --variable=libdir 2> /dev/null`"])
$1="$guix_cv_libz_libdir"
])
dnl GUIX_CURRENT_LOCALSTATEDIR
dnl
dnl Determine the localstatedir of an existing Guix installation and set
dnl 'guix_cv_current_localstatedir' accordingly. Set it to "none" if no
dnl existing installation was found.
AC_DEFUN([GUIX_CURRENT_LOCALSTATEDIR], [
AC_PATH_PROG([GUILE], [guile])
AC_CACHE_CHECK([the current installation's localstatedir],
[guix_cv_current_localstatedir],
[dnl Call 'dirname' because (guix config) appends "/guix" to LOCALSTATEDIR.
guix_cv_current_localstatedir="`"$GUILE" \
-c '(use-modules (guix config))
(when (string=? %store-directory "'$storedir'")
(display (dirname %state-directory)))' \
2>/dev/null`"
if test "x$guix_cv_current_localstatedir" = "x"; then
guix_cv_current_localstatedir=none
fi])])
dnl GUIX_CHECK_LOCALSTATEDIR
dnl
dnl Check that the LOCALSTATEDIR value is consistent with that of the existing
dnl Guix installation, if any. Error out or warn if they do not match.
AC_DEFUN([GUIX_CHECK_LOCALSTATEDIR], [
AC_REQUIRE([GUIX_CURRENT_LOCALSTATEDIR])
if test "x$guix_cv_current_localstatedir" != "xnone"; then
if test "$guix_cv_current_localstatedir" != "$guix_localstatedir"; then
case "$localstatedir" in
NONE|\${prefix}*)
# User kept the default value---i.e., did not pass '--localstatedir'.
AC_MSG_ERROR([chosen localstatedir '$guix_localstatedir' does not match \
that of the existing installation '$guix_cv_current_localstatedir'
Installing may corrupt $storedir!
Use './configure --localstatedir=$guix_cv_current_localstatedir'.])
;;
*)
# User passed an explicit '--localstatedir'. Assume they know what
# they're doing.
AC_MSG_WARN([chosen localstatedir '$guix_localstatedir' does not match \
that of the existing installation '$guix_cv_current_localstatedir'])
AC_MSG_WARN([installing may corrupt $storedir!])
;;
esac
fi
fi])
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