1 dnl GNU Guix --- Functional package management for GNU
2 dnl Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
3 dnl Copyright © 2014 Mark H Weaver <mhw@netris.org>
4 dnl Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
6 dnl This file is part of GNU Guix.
8 dnl GNU Guix is free software; you can redistribute it and/or modify it
9 dnl under the terms of the GNU General Public License as published by
10 dnl the Free Software Foundation; either version 3 of the License, or (at
11 dnl your option) any later version.
13 dnl GNU Guix is distributed in the hope that it will be useful, but
14 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
15 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 dnl GNU General Public License for more details.
18 dnl You should have received a copy of the GNU General Public License
19 dnl along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
21 dnl GUIX_ASSERT_LIBGCRYPT_USABLE
23 dnl Assert that GNU libgcrypt is usable from Guile.
24 AC_DEFUN([GUIX_ASSERT_LIBGCRYPT_USABLE],
25 [AC_CACHE_CHECK([whether $LIBGCRYPT can be dynamically loaded],
26 [guix_cv_libgcrypt_usable_p],
27 [GUILE_CHECK([retval],
28 [(dynamic-func \"gcry_md_hash_buffer\" (dynamic-link \"$LIBGCRYPT\"))])
29 if test "$retval" = 0; then
30 guix_cv_libgcrypt_usable_p="yes"
32 guix_cv_libgcrypt_usable_p="no"
35 if test "x$guix_cv_libgcrypt_usable_p" != "xyes"; then
36 AC_MSG_ERROR([GNU libgcrypt does not appear to be usable; see `--with-libgcrypt-prefix' and `README'.])
41 dnl Determine the Guix host system type, and store it in the
42 dnl `guix_system' variable.
43 AC_DEFUN([GUIX_SYSTEM_TYPE], [
44 AC_REQUIRE([AC_CANONICAL_HOST])
45 AC_PATH_PROG([SED], [sed])
47 AC_ARG_WITH(system, AC_HELP_STRING([--with-system=SYSTEM],
48 [Platform identifier (e.g., `i686-linux').]),
49 [guix_system="$withval"],
54 machine_name="x86_64";;
56 # Here we want to exclude CPUs such as "armv6l". On ARMv7
57 # machines, we normally get "armv7l". However, in Guix, we
58 # configure with --build=arm-unknown-linux-gnueabihf, leading
59 # to just "arm", so we also have to allow it.
61 # TODO: If not cross-compiling, add a sanity check to make
62 # sure this build machine has the needed features to
63 # support executables compiled using our armhf gcc,
68 # --with-fpu=vfpv3-d16
69 machine_name="armhf";;
71 machine_name="$host_cpu";;
76 # For backward compatibility, strip the `-gnu' part.
77 guix_system="$machine_name-linux";;
79 # Always use i586 for GNU/Hurd.
80 guix_system="i586-gnu";;
82 # Strip the version number from names such as `gnu0.3',
83 # `darwin10.2.0', etc.
84 guix_system="$machine_name-`echo $host_os | "$SED" -e's/[0-9.]*$//g'`";;
87 AC_MSG_CHECKING([for the Guix system type])
88 AC_MSG_RESULT([$guix_system])
90 AC_SUBST([guix_system])
93 dnl GUIX_ASSERT_SUPPORTED_SYSTEM
95 dnl Assert that this is a system to which the distro is ported.
96 AC_DEFUN([GUIX_ASSERT_SUPPORTED_SYSTEM], [
97 AC_REQUIRE([GUIX_SYSTEM_TYPE])
99 AC_ARG_WITH([courage], [AC_HELP_STRING([--with-courage],
100 [Assert that even if this platform is unsupported, you will be
101 courageous and port the GNU System distribution to it (see
102 "GNU Distribution" in the manual.)])],
103 [guix_courageous="$withval"],
104 [guix_courageous="no"])
106 # Currently only Linux-based systems are supported, and only on some
108 case "$guix_system" in
109 x86_64-linux|i686-linux|armhf-linux|aarch64-linux|mips64el-linux)
112 if test "x$guix_courageous" = "xyes"; then
113 AC_MSG_WARN([building Guix on `$guix_system', which is not supported])
115 AC_MSG_ERROR([`$guix_system' is not a supported platform.
116 See "GNU Distribution" in the manual, or try `--with-courage'.])
122 dnl GUIX_ASSERT_GUILE_FEATURES FEATURES
124 dnl Assert that FEATURES are provided by $GUILE.
125 AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
126 for guix_guile_feature in $1
128 AC_MSG_CHECKING([whether $GUILE provides feature '$guix_guile_feature'])
129 if "$GUILE" -c "(exit (provided? '$guix_guile_feature))"
134 AC_MSG_ERROR([$GUILE does not support feature '$guix_guile_feature', which is required.])
139 dnl GUIX_CHECK_UNBUFFERED_CBIP
141 dnl Check whether 'setbvuf' works on custom binary input ports (CBIPs), as is
142 dnl the case starting with Guile 2.0.10.
143 AC_DEFUN([GUIX_CHECK_UNBUFFERED_CBIP], [
144 AC_CACHE_CHECK([whether Guile's custom binary input ports support 'setvbuf'],
145 [ac_cv_guix_cbips_support_setvbuf],
146 [if "$GUILE" -c "(use-modules (rnrs io ports)) \
147 (let ((p (make-custom-binary-input-port \"cbip\" pk #f #f #f))) \
148 (setvbuf p _IONBF))" >&5 2>&1
150 ac_cv_guix_cbips_support_setvbuf=yes
152 ac_cv_guix_cbips_support_setvbuf=no
156 dnl GUIX_CHECK_GUILE_SSH
158 dnl Check whether a recent-enough Guile-SSH is available.
159 AC_DEFUN([GUIX_CHECK_GUILE_SSH], [
160 dnl Check whether 'channel-send-eof' (introduced in 0.10.2) is present.
161 AC_CACHE_CHECK([whether Guile-SSH is available and recent enough],
162 [guix_cv_have_recent_guile_ssh],
163 [GUILE_CHECK([retval],
164 [(and (@ (ssh channel) channel-send-eof)
165 (@ (ssh popen) open-remote-pipe)
166 (@ (ssh dist node) node-eval))])
167 if test "$retval" = 0; then
168 guix_cv_have_recent_guile_ssh="yes"
170 guix_cv_have_recent_guile_ssh="no"
174 dnl GUIX_TEST_ROOT_DIRECTORY
175 AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [
176 AC_CACHE_CHECK([for unit test root directory],
177 [ac_cv_guix_test_root],
178 [ac_cv_guix_test_root="`pwd`/test-tmp"])
181 dnl 'BINPRM_BUF_SIZE' constant in Linux (we leave room for the trailing zero.)
182 dnl The Hurd has a limit of about a page (see exec/hashexec.c.)
183 m4_define([LINUX_HASH_BANG_LIMIT], 127)
185 dnl Hardcoded 'sun_path' length in <sys/un.h>.
186 m4_define([SOCKET_FILE_NAME_LIMIT], 108)
188 dnl GUIX_SOCKET_FILE_NAME_LENGTH
189 AC_DEFUN([GUIX_SOCKET_FILE_NAME_LENGTH], [
190 AC_CACHE_CHECK([the length of the installed socket file name],
191 [ac_cv_guix_socket_file_name_length],
192 [ac_cv_guix_socket_file_name_length="`echo -n "$guix_localstatedir/guix/daemon-socket/socket" | wc -c`"])
195 dnl GUIX_TEST_SOCKET_FILE_NAME_LENGTH
196 AC_DEFUN([GUIX_TEST_SOCKET_FILE_NAME_LENGTH], [
197 AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
198 AC_CACHE_CHECK([the length of the socket file name used in tests],
199 [ac_cv_guix_test_socket_file_name_length],
200 [ac_cv_guix_test_socket_file_name_length="`echo -n "$ac_cv_guix_test_root/var/123456/daemon-socket/socket" | wc -c`"])
203 dnl GUIX_HASH_BANG_LENGTH
204 AC_DEFUN([GUIX_HASH_BANG_LENGTH], [
205 AC_CACHE_CHECK([the length of a typical hash bang line],
206 [ac_cv_guix_hash_bang_length],
207 [ac_cv_guix_hash_bang_length=`echo -n "$storedir/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
210 dnl GUIX_TEST_HASH_BANG_LENGTH
211 AC_DEFUN([GUIX_TEST_HASH_BANG_LENGTH], [
212 AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
213 AC_CACHE_CHECK([the length of a hash bang line used in tests],
214 [ac_cv_guix_test_hash_bang_length],
215 [ac_cv_guix_test_hash_bang_length=`echo -n "$ac_cv_guix_test_root/store/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
218 dnl GUIX_CHECK_FILE_NAME_LIMITS
220 dnl GNU/Linux has a couple of silly limits that we can easily run into.
221 dnl Make sure everything is fine with the current settings. Set $1 to
222 dnl 'yes' if tests can run, 'no' otherwise.
223 AC_DEFUN([GUIX_CHECK_FILE_NAME_LIMITS], [
224 AC_REQUIRE([GUIX_SOCKET_FILE_NAME_LENGTH])
225 AC_REQUIRE([GUIX_TEST_SOCKET_FILE_NAME_LENGTH])
226 AC_REQUIRE([GUIX_HASH_BANG_LENGTH])
227 AC_REQUIRE([GUIX_TEST_HASH_BANG_LENGTH])
229 if test "$ac_cv_guix_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
230 AC_MSG_ERROR([socket file name would exceed the maxium allowed length])
232 if test "$ac_cv_guix_test_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
233 AC_MSG_WARN([socket file name limit may be exceeded when running tests])
237 if test "$ac_cv_guix_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
239 AC_MSG_ERROR([store directory '$storedir' would lead to overly long hash-bang lines])
241 if test "$ac_cv_guix_test_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
243 AC_MSG_WARN([test directory '$ac_cv_guix_test_root' may lead to overly long hash-bang lines])
249 dnl Check whether the C++ compiler can compile a typical C++11 program.
250 AC_DEFUN([GUIX_CHECK_CXX11], [
251 AC_REQUIRE([AC_PROG_CXX])
252 AC_CACHE_CHECK([whether $CXX supports C++11],
253 [ac_cv_guix_cxx11_support],
254 [save_CXXFLAGS="$CXXFLAGS"
255 CXXFLAGS="-std=c++11 $CXXFLAGS"
258 #include <functional>
260 std::function<int(int)>
261 return_plus_lambda (int x)
263 auto result = [[&]](int y) {
270 [ac_cv_guix_cxx11_support=yes],
271 [ac_cv_guix_cxx11_support=no])
272 CXXFLAGS="$save_CXXFLAGS"
276 dnl GUIX_ASSERT_CXX11
278 dnl Error out if the C++ compiler cannot compile C++11 code.
279 AC_DEFUN([GUIX_ASSERT_CXX11], [
281 if test "x$ac_cv_guix_cxx11_support" != "xyes"; then
282 AC_MSG_ERROR([C++ compiler '$CXX' does not support the C++11 standard])
286 dnl GUIX_LIBGCRYPT_LIBDIR VAR
288 dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR.
289 AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [
290 AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config])
291 AC_CACHE_CHECK([libgcrypt's library directory],
292 [guix_cv_libgcrypt_libdir],
293 [if test "x$LIBGCRYPT_CONFIG" != "x"; then
294 guix_cv_libgcrypt_libdir=`$LIBGCRYPT_CONFIG --libs | grep -e -L | sed -e "s/.*-L\([[^ ]]\+\)[[[:blank:]]]\+-lgcrypt.*/\1/g"`
296 guix_cv_libgcrypt_libdir=""
298 $1="$guix_cv_libgcrypt_libdir"
301 dnl GUIX_LIBZ_LIBDIR VAR
303 dnl Attempt to determine libz's LIBDIR; store the result in VAR.
304 AC_DEFUN([GUIX_LIBZ_LIBDIR], [
305 AC_REQUIRE([PKG_PROG_PKG_CONFIG])
306 AC_CACHE_CHECK([zlib's library directory],
307 [guix_cv_libz_libdir],
308 [guix_cv_libz_libdir="`$PKG_CONFIG zlib --variable=libdir 2> /dev/null`"])
309 $1="$guix_cv_libz_libdir"
312 dnl GUIX_CURRENT_LOCALSTATEDIR
314 dnl Determine the localstatedir of an existing Guix installation and set
315 dnl 'guix_cv_current_localstatedir' accordingly. Set it to "none" if no
316 dnl existing installation was found.
317 AC_DEFUN([GUIX_CURRENT_LOCALSTATEDIR], [
318 AC_PATH_PROG([GUILE], [guile])
319 AC_CACHE_CHECK([the current installation's localstatedir],
320 [guix_cv_current_localstatedir],
321 [dnl Call 'dirname' because (guix config) appends "/guix" to LOCALSTATEDIR.
322 guix_cv_current_localstatedir="`"$GUILE" \
323 -c '(use-modules (guix config))
324 (when (string=? %store-directory "'$storedir'")
325 (display (dirname %state-directory)))' \
327 if test "x$guix_cv_current_localstatedir" = "x"; then
328 guix_cv_current_localstatedir=none
331 dnl GUIX_CHECK_LOCALSTATEDIR
333 dnl Check that the LOCALSTATEDIR value is consistent with that of the existing
334 dnl Guix installation, if any. Error out or warn if they do not match.
335 AC_DEFUN([GUIX_CHECK_LOCALSTATEDIR], [
336 AC_REQUIRE([GUIX_CURRENT_LOCALSTATEDIR])
337 if test "x$guix_cv_current_localstatedir" != "xnone"; then
338 if test "$guix_cv_current_localstatedir" != "$guix_localstatedir"; then
339 case "$localstatedir" in
341 # User kept the default value---i.e., did not pass '--localstatedir'.
342 AC_MSG_ERROR([chosen localstatedir '$guix_localstatedir' does not match \
343 that of the existing installation '$guix_cv_current_localstatedir'
344 Installing may corrupt $storedir!
345 Use './configure --localstatedir=$guix_cv_current_localstatedir'.])
348 # User passed an explicit '--localstatedir'. Assume they know what
350 AC_MSG_WARN([chosen localstatedir '$guix_localstatedir' does not match \
351 that of the existing installation '$guix_cv_current_localstatedir'])
352 AC_MSG_WARN([installing may corrupt $storedir!])