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-rw-r--r--m4/guix.m421
1 files changed, 21 insertions, 0 deletions
diff --git a/m4/guix.m4 b/m4/guix.m4
index d0c5ec0f08..716bfb08ec 100644
--- a/m4/guix.m4
+++ b/m4/guix.m4
@@ -174,6 +174,27 @@ AC_DEFUN([GUIX_CHECK_GUILE_SQLITE3], [
fi])
])
+dnl GUIX_CHECK_GUILE_JSON
+dnl
+dnl Check whether a recent-enough Guile-JSON is available.
+AC_DEFUN([GUIX_CHECK_GUILE_JSON], [
+ dnl Check whether we're using Guile-JSON 3.x, which uses a JSON-to-Scheme
+ dnl mapping different from that of earlier versions.
+ AC_CACHE_CHECK([whether Guile-JSON is available and recent enough],
+ [guix_cv_have_recent_guile_json],
+ [GUILE_CHECK([retval],
+ [(use-modules (json) (ice-9 match))
+ (match (json-string->scm \"[[] { \\\"a\\\": 42 } []]\")
+ (#(("a" . 42)) #t)
+ (_ #f))])
+ if test "$retval" = 0; then
+ guix_cv_have_recent_guile_json="yes"
+ else
+ guix_cv_have_recent_guile_json="no"
+ fi])
+])
+
+
dnl GUIX_TEST_ROOT_DIRECTORY
AC_DEFUN([GUIX_TEST_ROOT_DIRECTORY], [
AC_CACHE_CHECK([for unit test root directory],