[COMMITTED] configure.ac: emit an error when gl_HOST_CPU_ABI_32BIT fails

[Mohammad-Reza Nabipoor]

2024-01-28  Mohammad-Reza Nabipoor  <mnabipoor@gnu.org>

        * configure.ac (gl_HOST_CPU_ABI_32BIT): Emit an error instead of
        warning when the result is "unknown".
---
 ChangeLog    | 5 +++++
 configure.ac | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index d9aea8b1..000a07dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2024-01-28  Mohammad-Reza Nabipoor  <mnabipoor@gnu.org>
+
+       * configure.ac (gl_HOST_CPU_ABI_32BIT): Emit an error instead of
+       warning when the result is "unknown".
+
 2024-01-26  Mohammad-Reza Nabipoor  <mnabipoor@gnu.org>
 
        * poke/pk-term.h (pk_compiler): Don't re-typedef `pk_compiler'.
diff --git a/configure.ac b/configure.ac
index ffcc4c46..fedc7bd8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -222,7 +222,7 @@ case "$HOST_CPU_C_ABI_32BIT" in
   yes)
     AC_DEFINE([POKE_HOST_32BIT],[1],[whether the host C ABI is 32-bit]);;
   unknown)
-    AC_MSG_WARN([unable to determine whether the host C ABI is 32-bit]);;
+    AC_MSG_ERROR([unable to determine whether the host C ABI is 32-bit]);;
   *) ;;
 esac
 
-- 
2.43.0