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_SRFI_37
141 dnl Check whether SRFI-37 suffers from <http://bugs.gnu.org/13176>.
142 dnl This bug was fixed in Guile 2.0.9.
143 AC_DEFUN([GUIX_CHECK_SRFI_37], [
144 AC_CACHE_CHECK([whether (srfi srfi-37) is affected by http://bugs.gnu.org/13176],
145 [ac_cv_guix_srfi_37_broken],
146 [if "$GUILE" -c "(use-modules (srfi srfi-37)) \
147 (sigaction SIGALRM (lambda _ (primitive-exit 1))) \
149 (define opts (list (option '(#\I) #f #t (lambda _ #t)))) \
150 (args-fold '(\"-I\") opts (lambda _ (error)) (lambda _ #f) '())"
152 ac_cv_guix_srfi_37_broken=no
154 ac_cv_guix_srfi_37_broken=yes
158 dnl GUIX_CHECK_UNBUFFERED_CBIP
160 dnl Check whether 'setbvuf' works on custom binary input ports (CBIPs), as is
161 dnl the case starting with Guile 2.0.10.
162 AC_DEFUN([GUIX_CHECK_UNBUFFERED_CBIP], [
163 AC_CACHE_CHECK([whether Guile's custom binary input ports support 'setvbuf'],
164 [ac_cv_guix_cbips_support_setvbuf],
165 [if "$GUILE" -c "(use-modules (rnrs io ports)) \
166 (let ((p (make-custom-binary-input-port \"cbip\" pk #f #f #f))) \
167 (setvbuf p _IONBF))" >&5 2>&1
169 ac_cv_guix_cbips_support_setvbuf=yes
171 ac_cv_guix_cbips_support_setvbuf=no
175 dnl GUIX_CHECK_GUILE_SSH
177 dnl Check whether a recent-enough Guile-SSH is available.
178 AC_DEFUN([GUIX_CHECK_GUILE_SSH], [
179 dnl Check whether 'channel-send-eof' (introduced in 0.10.2) is present.
180 AC_CACHE_CHECK([whether Guile-SSH is available and recent enough],
181 [guix_cv_have_recent_guile_ssh],
182 [GUILE_CHECK([retval],
183 [(and (@ (ssh channel) channel-send-eof)
184 (@ (ssh popen) open-remote-pipe)
185 (@ (ssh dist node) node-eval))])
186 if test "$retval" = 0; then
187 guix_cv_have_recent_guile_ssh="yes"
189 guix_cv_have_recent_guile_ssh="no"
193 dnl GUIX_TEST_ROOT_DIRECTORY
194 AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [
195 AC_CACHE_CHECK([for unit test root directory],
196 [ac_cv_guix_test_root],
197 [ac_cv_guix_test_root="`pwd`/test-tmp"])
200 dnl 'BINPRM_BUF_SIZE' constant in Linux (we leave room for the trailing zero.)
201 dnl The Hurd has a limit of about a page (see exec/hashexec.c.)
202 m4_define([LINUX_HASH_BANG_LIMIT], 127)
204 dnl Hardcoded 'sun_path' length in <sys/un.h>.
205 m4_define([SOCKET_FILE_NAME_LIMIT], 108)
207 dnl GUIX_SOCKET_FILE_NAME_LENGTH
208 AC_DEFUN([GUIX_SOCKET_FILE_NAME_LENGTH], [
209 AC_CACHE_CHECK([the length of the installed socket file name],
210 [ac_cv_guix_socket_file_name_length],
211 [ac_cv_guix_socket_file_name_length="`echo -n "$guix_localstatedir/guix/daemon-socket/socket" | wc -c`"])
214 dnl GUIX_TEST_SOCKET_FILE_NAME_LENGTH
215 AC_DEFUN([GUIX_TEST_SOCKET_FILE_NAME_LENGTH], [
216 AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
217 AC_CACHE_CHECK([the length of the socket file name used in tests],
218 [ac_cv_guix_test_socket_file_name_length],
219 [ac_cv_guix_test_socket_file_name_length="`echo -n "$ac_cv_guix_test_root/var/123456/daemon-socket/socket" | wc -c`"])
222 dnl GUIX_HASH_BANG_LENGTH
223 AC_DEFUN([GUIX_HASH_BANG_LENGTH], [
224 AC_CACHE_CHECK([the length of a typical hash bang line],
225 [ac_cv_guix_hash_bang_length],
226 [ac_cv_guix_hash_bang_length=`echo -n "$storedir/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
229 dnl GUIX_TEST_HASH_BANG_LENGTH
230 AC_DEFUN([GUIX_TEST_HASH_BANG_LENGTH], [
231 AC_REQUIRE([GUIX_TEST_ROOT_DIRECTORY])
232 AC_CACHE_CHECK([the length of a hash bang line used in tests],
233 [ac_cv_guix_test_hash_bang_length],
234 [ac_cv_guix_test_hash_bang_length=`echo -n "$ac_cv_guix_test_root/store/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`])
237 dnl GUIX_CHECK_FILE_NAME_LIMITS
239 dnl GNU/Linux has a couple of silly limits that we can easily run into.
240 dnl Make sure everything is fine with the current settings. Set $1 to
241 dnl 'yes' if tests can run, 'no' otherwise.
242 AC_DEFUN([GUIX_CHECK_FILE_NAME_LIMITS], [
243 AC_REQUIRE([GUIX_SOCKET_FILE_NAME_LENGTH])
244 AC_REQUIRE([GUIX_TEST_SOCKET_FILE_NAME_LENGTH])
245 AC_REQUIRE([GUIX_HASH_BANG_LENGTH])
246 AC_REQUIRE([GUIX_TEST_HASH_BANG_LENGTH])
248 if test "$ac_cv_guix_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
249 AC_MSG_ERROR([socket file name would exceed the maxium allowed length])
251 if test "$ac_cv_guix_test_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then
252 AC_MSG_WARN([socket file name limit may be exceeded when running tests])
256 if test "$ac_cv_guix_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
258 AC_MSG_ERROR([store directory '$storedir' would lead to overly long hash-bang lines])
260 if test "$ac_cv_guix_test_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then
262 AC_MSG_WARN([test directory '$ac_cv_guix_test_root' may lead to overly long hash-bang lines])
268 dnl Check whether the C++ compiler can compile a typical C++11 program.
269 AC_DEFUN([GUIX_CHECK_CXX11], [
270 AC_REQUIRE([AC_PROG_CXX])
271 AC_CACHE_CHECK([whether $CXX supports C++11],
272 [ac_cv_guix_cxx11_support],
273 [save_CXXFLAGS="$CXXFLAGS"
274 CXXFLAGS="-std=c++11 $CXXFLAGS"
277 #include <functional>
279 std::function<int(int)>
280 return_plus_lambda (int x)
282 auto result = [[&]](int y) {
289 [ac_cv_guix_cxx11_support=yes],
290 [ac_cv_guix_cxx11_support=no])
291 CXXFLAGS="$save_CXXFLAGS"
295 dnl GUIX_ASSERT_CXX11
297 dnl Error out if the C++ compiler cannot compile C++11 code.
298 AC_DEFUN([GUIX_ASSERT_CXX11], [
300 if test "x$ac_cv_guix_cxx11_support" != "xyes"; then
301 AC_MSG_ERROR([C++ compiler '$CXX' does not support the C++11 standard])
305 dnl GUIX_LIBGCRYPT_LIBDIR VAR
307 dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR.
308 AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [
309 AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config])
310 AC_CACHE_CHECK([libgcrypt's library directory],
311 [guix_cv_libgcrypt_libdir],
312 [if test "x$LIBGCRYPT_CONFIG" != "x"; then
313 guix_cv_libgcrypt_libdir=`$LIBGCRYPT_CONFIG --libs | grep -e -L | sed -e "s/.*-L\([[^ ]]\+\)[[[:blank:]]]\+-lgcrypt.*/\1/g"`
315 guix_cv_libgcrypt_libdir=""
317 $1="$guix_cv_libgcrypt_libdir"
320 dnl GUIX_LIBZ_LIBDIR VAR
322 dnl Attempt to determine libz's LIBDIR; store the result in VAR.
323 AC_DEFUN([GUIX_LIBZ_LIBDIR], [
324 AC_REQUIRE([PKG_PROG_PKG_CONFIG])
325 AC_CACHE_CHECK([zlib's library directory],
326 [guix_cv_libz_libdir],
327 [guix_cv_libz_libdir="`$PKG_CONFIG zlib --variable=libdir 2> /dev/null`"])
328 $1="$guix_cv_libz_libdir"
331 dnl GUIX_CURRENT_LOCALSTATEDIR
333 dnl Determine the localstatedir of an existing Guix installation and set
334 dnl 'guix_cv_current_localstatedir' accordingly. Set it to "none" if no
335 dnl existing installation was found.
336 AC_DEFUN([GUIX_CURRENT_LOCALSTATEDIR], [
337 AC_PATH_PROG([GUILE], [guile])
338 AC_CACHE_CHECK([the current installation's localstatedir],
339 [guix_cv_current_localstatedir],
340 [dnl Call 'dirname' because (guix config) appends "/guix" to LOCALSTATEDIR.
341 guix_cv_current_localstatedir="`"$GUILE" \
342 -c '(use-modules (guix config))
343 (when (string=? %store-directory "'$storedir'")
344 (display (dirname %state-directory)))' \
346 if test "x$guix_cv_current_localstatedir" = "x"; then
347 guix_cv_current_localstatedir=none
350 dnl GUIX_CHECK_LOCALSTATEDIR
352 dnl Check that the LOCALSTATEDIR value is consistent with that of the existing
353 dnl Guix installation, if any. Error out or warn if they do not match.
354 AC_DEFUN([GUIX_CHECK_LOCALSTATEDIR], [
355 AC_REQUIRE([GUIX_CURRENT_LOCALSTATEDIR])
356 if test "x$guix_cv_current_localstatedir" != "xnone"; then
357 if test "$guix_cv_current_localstatedir" != "$guix_localstatedir"; then
358 case "$localstatedir" in
360 # User kept the default value---i.e., did not pass '--localstatedir'.
361 AC_MSG_ERROR([chosen localstatedir '$guix_localstatedir' does not match \
362 that of the existing installation '$guix_cv_current_localstatedir'
363 Installing may corrupt $storedir!
364 Use './configure --localstatedir=$guix_cv_current_localstatedir'.])
367 # User passed an explicit '--localstatedir'. Assume they know what
369 AC_MSG_WARN([chosen localstatedir '$guix_localstatedir' does not match \
370 that of the existing installation '$guix_cv_current_localstatedir'])
371 AC_MSG_WARN([installing may corrupt $storedir!])