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build: Do not build (guix build syscalls) if 'mount' is missing from libc.

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This disables compilation of this module on GNU/Hurd.
Reported by Manolis Ragkousis <manolis837@gmail.com>.

* m4/guix.m4 (GUIX_CHECK_LIBC_MOUNT): New variable.
* configure.ac: Use it.  Define 'BUILD_SYSCALLS_MODULE' conditional.
* Makefile.am (MODULES, EXTRA_DIST): Make 'guix/build/syscalls.scm'
  conditional on BUILD_SYSCALLS_MODULE.
This commit is contained in:
Ludovic Courtès
2015-08-26 14:07:31 +02:00
parent c2b8467645
commit 12e5b26643
3 changed files with 32 additions and 1 deletions
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configure.ac
+5
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@@ -85,6 +85,11 @@ dnl Check whether (srfi srfi-37) works, and provide our own if it doesn't.
GUIX_CHECK_SRFI_37
AM_CONDITIONAL([INSTALL_SRFI_37], [test "x$ac_cv_guix_srfi_37_broken" = xyes])
dnl Check whether (guix build syscalls) can be built.
GUIX_CHECK_LIBC_MOUNT
AM_CONDITIONAL([BUILD_SYSCALLS_MODULE],
[test "x$guix_cv_libc_has_mount" = "xyes"])
AC_ARG_WITH([nix-prefix],
[AS_HELP_STRING([--with-nix-prefix=DIR],
[search for Nix in DIR (for testing purposes and '--disable-daemon' builds)])],