dnl GNU Guix --- Functional package management for GNU dnl Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès dnl Copyright © 2014 Mark H Weaver 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 . dnl GUIX_ASSERT_LIBGCRYPT_USABLE dnl dnl Assert that GNU libgcrypt is usable from Guile. AC_DEFUN([GUIX_ASSERT_LIBGCRYPT_USABLE], [AC_CACHE_CHECK([whether $LIBGCRYPT can be dynamically loaded], [guix_cv_libgcrypt_usable_p], [GUILE_CHECK([retval], [(dynamic-func \"gcry_md_hash_buffer\" (dynamic-link \"$LIBGCRYPT\"))]) if test "$retval" = 0; then guix_cv_libgcrypt_usable_p="yes" else guix_cv_libgcrypt_usable_p="no" fi]) if test "x$guix_cv_libgcrypt_usable_p" != "xyes"; then AC_MSG_ERROR([GNU libgcrypt does not appear to be usable; see `--with-libgcrypt-prefix' and `README'.]) fi]) 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|armv7*) # 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="$machine_name-linux";; *) # Strip the version number from names such as `gnu0.3', # `darwin10.2.0', etc. guix_system="$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|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_CHECK_SRFI_37 dnl dnl Check whether SRFI-37 suffers from . dnl This bug was fixed in Guile 2.0.9. AC_DEFUN([GUIX_CHECK_SRFI_37], [ AC_CACHE_CHECK([whether (srfi srfi-37) is affected by http://bugs.gnu.org/13176], [ac_cv_guix_srfi_37_broken], [if "$GUILE" -c "(use-modules (srfi srfi-37)) \ (sigaction SIGALRM (lambda _ (primitive-exit 1))) \ (alarm 1) \ (define opts (list (option '(#\I) #f #t (lambda _ #t)))) \ (args-fold '(\"-I\") opts (lambda _ (error)) (lambda _ #f) '())" then ac_cv_guix_srfi_37_broken=no else ac_cv_guix_srfi_37_broken=yes fi]) ]) dnl GUIX_CHECK_UNBUFFERED_CBIP dnl dnl Check whether 'setbvuf' works on custom binary input ports (CBIPs), as is dnl the case starting with Guile 2.0.10. AC_DEFUN([GUIX_CHECK_UNBUFFERED_CBIP], [ AC_CACHE_CHECK([whether Guile's custom binary input ports support 'setvbuf'], [ac_cv_guix_cbips_support_setvbuf], [if "$GUILE" -c "(use-modules (rnrs io ports)) \ (let ((p (make-custom-binary-input-port \"cbip\" pk #f #f #f))) \ (setvbuf p _IONBF))" >&5 2>&1 then ac_cv_guix_cbips_support_setvbuf=yes else ac_cv_guix_cbips_support_setvbuf=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. The Hurd has a limit dnl of about a page (see exec/hashexec.c.) m4_define([LINUX_HASH_BANG_LIMIT], 128) dnl Hardcoded 'sun_path' length in . 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 "$storedir/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bootstrap-binaries-0/bin/bash" | wc -c`]) ]) dnl GUIX_CHECK_FILE_NAME_LIMITS dnl dnl GNU/Linux has a couple of silly limits that we can easily run into. dnl Make sure everything is fine with the current settings. AC_DEFUN([GUIX_CHECK_FILE_NAME_LIMITS], [ AC_REQUIRE([GUIX_SOCKET_FILE_NAME_LENGTH]) AC_REQUIRE([GUIX_TEST_SOCKET_FILE_NAME_LENGTH]) AC_REQUIRE([GUIX_HASH_BANG_LENGTH]) if test "$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 "$ac_cv_guix_test_socket_file_name_length" -ge ]SOCKET_FILE_NAME_LIMIT[; then AC_MSG_WARN([socket file name limit may be exceeded when running tests]) fi if test "$ac_cv_guix_hash_bang_length" -ge ]LINUX_HASH_BANG_LIMIT[; then AC_MSG_ERROR([store directory '$storedir' would 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 $CXXFLAGS" AC_COMPILE_IFELSE([ AC_LANG_SOURCE([ #include std::function return_plus_lambda (int x) { auto result = [[&]](int y) { return x + y; }; return result; } ])], [ac_cv_guix_cxx11_support=yes], [ac_cv_guix_cxx11_support=no]) CXXFLAGS="$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_CHECK_LIBC_MOUNT dnl dnl Check whether libc provides 'mount'. On GNU/Hurd it doesn't (yet). AC_DEFUN([GUIX_CHECK_LIBC_MOUNT], [ AC_CACHE_CHECK([whether libc provides 'mount'], [guix_cv_libc_has_mount], [GUILE_CHECK([retval], [(dynamic-func \"mount\" (dynamic-link))]) if test "$retval" = 0; then guix_cv_libc_has_mount="yes" else guix_cv_libc_has_mount="no" fi]) ]) dnl GUIX_LIBGCRYPT_LIBDIR VAR dnl dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR. AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [ AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config]) AC_CACHE_CHECK([libgcrypt's library directory], [guix_cv_libgcrypt_libdir], [if test "x$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" ])