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-rw-r--r--m4/guix.m420
1 files changed, 19 insertions, 1 deletions
diff --git a/m4/guix.m4 b/m4/guix.m4
index 961ce838ac..9eb3863482 100644
--- a/m4/guix.m4
+++ b/m4/guix.m4
@@ -1,5 +1,5 @@
dnl GNU Guix --- Functional package management for GNU
-dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
+dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
dnl Copyright © 2014 Mark H Weaver <mhw@netris.org>
dnl Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
dnl
@@ -194,6 +194,24 @@ AC_DEFUN([GUIX_CHECK_GUILE_JSON], [
fi])
])
+dnl GUIX_CHECK_GUILE_GCRYPT
+dnl
+dnl Check whether a recent-enough Guile-Gcrypt is available.
+AC_DEFUN([GUIX_CHECK_GUILE_GCRYPT], [
+ dnl Check whether we're using Guile-Gcrypt 0.2.x or later. 0.2.0
+ dnl introduced the 'hash-algorithm' macro and related code.
+ AC_CACHE_CHECK([whether Guile-Gcrypt is available and recent enough],
+ [guix_cv_have_recent_guile_gcrypt],
+ [GUILE_CHECK([retval],
+ [(use-modules (gcrypt hash))
+ (equal? (hash-algorithm sha256)
+ (lookup-hash-algorithm 'sha256))])
+ if test "$retval" = 0; then
+ guix_cv_have_recent_guile_gcrypt="yes"
+ else
+ guix_cv_have_recent_guile_gcrypt="no"
+ fi])
+])
dnl GUIX_TEST_ROOT_DIRECTORY
AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [