142182514b
Fixes <https://bugs.gnu.org/29903>. Reported by Mathieu Lirzin <mthl@gnu.org>. * m4/guix.m4 (GUIX_ASSERT_SYNTAX_OBJECT_EQUAL): New macro. * configure.ac: Use it.
377 lines
13 KiB
Plaintext
377 lines
13 KiB
Plaintext
dnl GNU Guix --- Functional package management for GNU
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dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
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dnl Copyright © 2014 Mark H Weaver <mhw@netris.org>
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dnl Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
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dnl
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dnl This file is part of GNU Guix.
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dnl
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dnl GNU Guix is free software; you can redistribute it and/or modify it
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dnl under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or (at
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dnl your option) any later version.
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dnl
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dnl GNU Guix is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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dnl GUIX_ASSERT_LIBGCRYPT_USABLE
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dnl
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dnl Assert that GNU libgcrypt is usable from Guile.
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AC_DEFUN([GUIX_ASSERT_LIBGCRYPT_USABLE],
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[AC_CACHE_CHECK([whether $LIBGCRYPT can be dynamically loaded],
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[guix_cv_libgcrypt_usable_p],
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[GUILE_CHECK([retval],
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[(dynamic-func \"gcry_md_hash_buffer\" (dynamic-link \"$LIBGCRYPT\"))])
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if test "$retval" = 0; then
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guix_cv_libgcrypt_usable_p="yes"
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else
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guix_cv_libgcrypt_usable_p="no"
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fi])
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if test "x$guix_cv_libgcrypt_usable_p" != "xyes"; then
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AC_MSG_ERROR([GNU libgcrypt does not appear to be usable; see `--with-libgcrypt-prefix' and `README'.])
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fi])
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dnl GUIX_SYSTEM_TYPE
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dnl
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dnl Determine the Guix host system type, and store it in the
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dnl `guix_system' variable.
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AC_DEFUN([GUIX_SYSTEM_TYPE], [
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_PATH_PROG([SED], [sed])
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AC_ARG_WITH(system, AC_HELP_STRING([--with-system=SYSTEM],
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[Platform identifier (e.g., `i686-linux').]),
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[guix_system="$withval"],
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[case "$host_cpu" in
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i*86)
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machine_name="i686";;
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amd64)
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machine_name="x86_64";;
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arm|armv[[7-9]]*)
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# Here we want to exclude CPUs such as "armv6l". On ARMv7
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# machines, we normally get "armv7l". However, in Guix, we
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# configure with --build=arm-unknown-linux-gnueabihf, leading
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# to just "arm", so we also have to allow it.
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#
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# TODO: If not cross-compiling, add a sanity check to make
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# sure this build machine has the needed features to
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# support executables compiled using our armhf gcc,
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# configured with:
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# --with-arch=armv7-a
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# --with-float=hard
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# --with-mode=thumb
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# --with-fpu=vfpv3-d16
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machine_name="armhf";;
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*)
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machine_name="$host_cpu";;
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esac
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case "$host_os" in
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linux-gnu*)
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# For backward compatibility, strip the `-gnu' part.
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guix_system="$machine_name-linux";;
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gnu*)
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# Always use i586 for GNU/Hurd.
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guix_system="i586-gnu";;
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*)
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# Strip the version number from names such as `gnu0.3',
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# `darwin10.2.0', etc.
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guix_system="$machine_name-`echo $host_os | "$SED" -e's/[0-9.]*$//g'`";;
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esac])
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AC_MSG_CHECKING([for the Guix system type])
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AC_MSG_RESULT([$guix_system])
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AC_SUBST([guix_system])
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])
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dnl GUIX_ASSERT_SUPPORTED_SYSTEM
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dnl
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dnl Assert that this is a system to which the distro is ported.
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AC_DEFUN([GUIX_ASSERT_SUPPORTED_SYSTEM], [
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AC_REQUIRE([GUIX_SYSTEM_TYPE])
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AC_ARG_WITH([courage], [AC_HELP_STRING([--with-courage],
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[Assert that even if this platform is unsupported, you will be
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courageous and port the GNU System distribution to it (see
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"GNU Distribution" in the manual.)])],
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[guix_courageous="$withval"],
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[guix_courageous="no"])
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# Currently only Linux-based systems are supported, and only on some
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# platforms.
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case "$guix_system" in
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x86_64-linux|i686-linux|armhf-linux|aarch64-linux|mips64el-linux)
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;;
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*)
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if test "x$guix_courageous" = "xyes"; then
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AC_MSG_WARN([building Guix on `$guix_system', which is not supported])
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else
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AC_MSG_ERROR([`$guix_system' is not a supported platform.
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See "GNU Distribution" in the manual, or try `--with-courage'.])
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fi
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;;
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esac
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])
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dnl GUIX_ASSERT_GUILE_FEATURES FEATURES
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dnl
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dnl Assert that FEATURES are provided by $GUILE.
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AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
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for guix_guile_feature in $1
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do
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AC_MSG_CHECKING([whether $GUILE provides feature '$guix_guile_feature'])
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if "$GUILE" -c "(exit (provided? '$guix_guile_feature))"
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then
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([$GUILE does not support feature '$guix_guile_feature', which is required.])
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fi
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done
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])
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dnl GUIX_CHECK_UNBUFFERED_CBIP
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dnl
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dnl Check whether 'setbvuf' works on custom binary input ports (CBIPs), as is
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dnl the case starting with Guile 2.0.10.
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AC_DEFUN([GUIX_CHECK_UNBUFFERED_CBIP], [
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AC_CACHE_CHECK([whether Guile's custom binary input ports support 'setvbuf'],
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[ac_cv_guix_cbips_support_setvbuf],
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[if "$GUILE" -c "(use-modules (rnrs io ports)) \
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(let ((p (make-custom-binary-input-port \"cbip\" pk #f #f #f))) \
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(setvbuf p _IONBF))" >&5 2>&1
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then
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ac_cv_guix_cbips_support_setvbuf=yes
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else
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ac_cv_guix_cbips_support_setvbuf=no
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fi])
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])
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dnl GUIX_ASSERT_SYNTAX_OBJECT_EQUAL
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dnl
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dnl Guile 2.2.1 was a brown-paper-bag release where 'equal?' wouldn't work
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dnl for syntax objects, which broke gexps. Unfortunately Fedora 25 provides it.
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dnl Reject it.
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AC_DEFUN([GUIX_ASSERT_SYNTAX_OBJECT_EQUAL], [
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AC_CACHE_CHECK([whether 'equal?' works for syntax objects],
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[ac_cv_guix_syntax_object_equal],
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[if "$GUILE" -c '(exit (equal? (syntax x) (syntax x)))'
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then
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ac_cv_guix_syntax_object_equal=yes
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else
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ac_cv_guix_syntax_object_equal=no
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fi])
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if test "x$ac_cv_guix_syntax_object_equal" != xyes; then
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# This bug was present in Guile 2.2.1 only.
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AC_MSG_ERROR(['equal?' does not work for syntax object; upgrade to Guile 2.2.2 or later.])
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fi
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])
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dnl GUIX_CHECK_GUILE_SSH
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dnl
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dnl Check whether a recent-enough Guile-SSH is available.
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AC_DEFUN([GUIX_CHECK_GUILE_SSH], [
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dnl Check whether 'channel-send-eof' (introduced in 0.10.2) is present.
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AC_CACHE_CHECK([whether Guile-SSH is available and recent enough],
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[guix_cv_have_recent_guile_ssh],
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[GUILE_CHECK([retval],
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[(and (@ (ssh channel) channel-send-eof)
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(@ (ssh popen) open-remote-pipe)
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(@ (ssh dist node) node-eval))])
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if test "$retval" = 0; then
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guix_cv_have_recent_guile_ssh="yes"
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else
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guix_cv_have_recent_guile_ssh="no"
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fi])
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])
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dnl GUIX_TEST_ROOT_DIRECTORY
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AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [
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AC_CACHE_CHECK([for unit test root directory],
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[ac_cv_guix_test_root],
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[ac_cv_guix_test_root="`pwd`/test-tmp"])
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])
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dnl 'BINPRM_BUF_SIZE' constant in Linux (we leave room for the trailing zero.)
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dnl The Hurd has a limit of about a page (see exec/hashexec.c.)
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m4_define([LINUX_HASH_BANG_LIMIT], 127)
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dnl Hardcoded 'sun_path' length in <sys/un.h>.
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m4_define([SOCKET_FILE_NAME_LIMIT], 108)
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dnl GUIX_SOCKET_FILE_NAME_LENGTH
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AC_DEFUN([GUIX_SOCKET_FILE_NAME_LENGTH], [
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AC_CACHE_CHECK([the length of the installed socket file name],
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[ac_cv_guix_socket_file_name_length],
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[ac_cv_guix_socket_file_name_length="`echo -n "$guix_localstatedir/guix/daemon-socket/socket" | wc -c`"])
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])
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dnl GUIX_TEST_SOCKET_FILE_NAME_LENGTH
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AC_DEFUN([GUIX_TEST_SOCKET_FILE_NAME_LENGTH], [
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AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
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AC_CACHE_CHECK([the length of the socket file name used in tests],
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[ac_cv_guix_test_socket_file_name_length],
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[ac_cv_guix_test_socket_file_name_length="`echo -n "$ac_cv_guix_test_root/var/123456/daemon-socket/socket" | wc -c`"])
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])
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dnl GUIX_HASH_BANG_LENGTH
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AC_DEFUN([GUIX_HASH_BANG_LENGTH], [
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AC_CACHE_CHECK([the length of a typical hash bang line],
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[ac_cv_guix_hash_bang_length],
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[ac_cv_guix_hash_bang_length=`echo -n "$storedir/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
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])
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dnl GUIX_TEST_HASH_BANG_LENGTH
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AC_DEFUN([GUIX_TEST_HASH_BANG_LENGTH], [
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AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
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AC_CACHE_CHECK([the length of a hash bang line used in tests],
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[ac_cv_guix_test_hash_bang_length],
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[ac_cv_guix_test_hash_bang_length=`echo -n "$ac_cv_guix_test_root/store/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
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])
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dnl GUIX_CHECK_FILE_NAME_LIMITS
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dnl
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dnl GNU/Linux has a couple of silly limits that we can easily run into.
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dnl Make sure everything is fine with the current settings. Set $1 to
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dnl 'yes' if tests can run, 'no' otherwise.
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AC_DEFUN([GUIX_CHECK_FILE_NAME_LIMITS], [
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AC_REQUIRE([GUIX_SOCKET_FILE_NAME_LENGTH])
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AC_REQUIRE([GUIX_TEST_SOCKET_FILE_NAME_LENGTH])
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AC_REQUIRE([GUIX_HASH_BANG_LENGTH])
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AC_REQUIRE([GUIX_TEST_HASH_BANG_LENGTH])
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if test "$ac_cv_guix_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
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AC_MSG_ERROR([socket file name would exceed the maxium allowed length])
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fi
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if test "$ac_cv_guix_test_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
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AC_MSG_WARN([socket file name limit may be exceeded when running tests])
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fi
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$1=yes
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if test "$ac_cv_guix_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
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$1=no
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AC_MSG_ERROR([store directory '$storedir' would lead to overly long hash-bang lines])
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fi
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if test "$ac_cv_guix_test_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
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$1=no
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AC_MSG_WARN([test directory '$ac_cv_guix_test_root' may lead to overly long hash-bang lines])
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fi
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])
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dnl GUIX_CHECK_CXX11
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dnl
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dnl Check whether the C++ compiler can compile a typical C++11 program.
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AC_DEFUN([GUIX_CHECK_CXX11], [
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AC_REQUIRE([AC_PROG_CXX])
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AC_CACHE_CHECK([whether $CXX supports C++11],
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[ac_cv_guix_cxx11_support],
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[save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS="-std=c++11 $CXXFLAGS"
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AC_COMPILE_IFELSE([
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AC_LANG_SOURCE([
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#include <functional>
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std::function<int(int)>
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return_plus_lambda (int x)
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{
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auto result = [[&]](int y) {
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return x + y;
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};
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return result;
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}
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])],
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[ac_cv_guix_cxx11_support=yes],
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[ac_cv_guix_cxx11_support=no])
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CXXFLAGS="$save_CXXFLAGS"
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])
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])
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dnl GUIX_ASSERT_CXX11
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dnl
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dnl Error out if the C++ compiler cannot compile C++11 code.
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AC_DEFUN([GUIX_ASSERT_CXX11], [
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GUIX_CHECK_CXX11
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if test "x$ac_cv_guix_cxx11_support" != "xyes"; then
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AC_MSG_ERROR([C++ compiler '$CXX' does not support the C++11 standard])
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fi
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])
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dnl GUIX_LIBGCRYPT_LIBDIR VAR
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dnl
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dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR.
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AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [
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AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config])
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AC_CACHE_CHECK([libgcrypt's library directory],
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[guix_cv_libgcrypt_libdir],
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[if test "x$LIBGCRYPT_CONFIG" != "x"; then
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guix_cv_libgcrypt_libdir=`$LIBGCRYPT_CONFIG --libs | grep -e -L | sed -e "s/.*-L\([[^ ]]\+\)[[[:blank:]]]\+-lgcrypt.*/\1/g"`
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else
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guix_cv_libgcrypt_libdir=""
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fi])
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$1="$guix_cv_libgcrypt_libdir"
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])
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dnl GUIX_LIBZ_LIBDIR VAR
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dnl
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dnl Attempt to determine libz's LIBDIR; store the result in VAR.
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AC_DEFUN([GUIX_LIBZ_LIBDIR], [
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AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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AC_CACHE_CHECK([zlib's library directory],
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[guix_cv_libz_libdir],
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[guix_cv_libz_libdir="`$PKG_CONFIG zlib --variable=libdir 2> /dev/null`"])
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$1="$guix_cv_libz_libdir"
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])
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dnl GUIX_CURRENT_LOCALSTATEDIR
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dnl
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dnl Determine the localstatedir of an existing Guix installation and set
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dnl 'guix_cv_current_localstatedir' accordingly. Set it to "none" if no
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dnl existing installation was found.
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AC_DEFUN([GUIX_CURRENT_LOCALSTATEDIR], [
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AC_PATH_PROG([GUILE], [guile])
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AC_CACHE_CHECK([the current installation's localstatedir],
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[guix_cv_current_localstatedir],
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[dnl Call 'dirname' because (guix config) appends "/guix" to LOCALSTATEDIR.
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guix_cv_current_localstatedir="`"$GUILE" \
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-c '(use-modules (guix config))
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(when (string=? %store-directory "'$storedir'")
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(display (dirname %state-directory)))' \
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2>/dev/null`"
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if test "x$guix_cv_current_localstatedir" = "x"; then
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guix_cv_current_localstatedir=none
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fi])])
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dnl GUIX_CHECK_LOCALSTATEDIR
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dnl
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dnl Check that the LOCALSTATEDIR value is consistent with that of the existing
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dnl Guix installation, if any. Error out or warn if they do not match.
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AC_DEFUN([GUIX_CHECK_LOCALSTATEDIR], [
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AC_REQUIRE([GUIX_CURRENT_LOCALSTATEDIR])
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if test "x$guix_cv_current_localstatedir" != "xnone"; then
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if test "$guix_cv_current_localstatedir" != "$guix_localstatedir"; then
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case "$localstatedir" in
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NONE|\${prefix}*)
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# User kept the default value---i.e., did not pass '--localstatedir'.
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AC_MSG_ERROR([chosen localstatedir '$guix_localstatedir' does not match \
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that of the existing installation '$guix_cv_current_localstatedir'
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Installing may corrupt $storedir!
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Use './configure --localstatedir=$guix_cv_current_localstatedir'.])
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;;
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*)
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# User passed an explicit '--localstatedir'. Assume they know what
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# they're doing.
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AC_MSG_WARN([chosen localstatedir '$guix_localstatedir' does not match \
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that of the existing installation '$guix_cv_current_localstatedir'])
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AC_MSG_WARN([installing may corrupt $storedir!])
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;;
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esac
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fi
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fi])
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