Makefile.am: Suppress GCC 10.x warning in gl/careadlinkat.c.

This suppresses an error in gl/careadlinkat.c that otherwise can't be
avoided in GCC 10.x:
  ../../gl/careadlinkat.c: In function ‘careadlinkat’:
  cc1: error: function may return address of local variable

diff --git a/configure.ac b/configure.ac
index 9780d7393fddc7c9b3637dbb6a8d28294b72b1a0..93395f1809fe3c7a3e2f78e945e775867bd57ffc 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -47,6 +47,12 @@ PSPP_CC_FOR_BUILD
 PSPP_PERL
 PSPP_PYTHON
 
+# This suppresses an error in gl/careadlinkat.c that otherwise can't be
+# avoided in GCC 10.x:
+#   ../../gl/careadlinkat.c: In function ‘careadlinkat’:
+#   cc1: error: function may return address of local variable
+CFLAGS="$CFLAGS -DGCC_LINT"
+
 dnl Disable automatic po/ support, because PSPP provides its own po/ support.
 AC_PROVIDE([AM_PO_SUBDIRS])
 AM_GNU_GETTEXT([external], [need-ngettext])