configure: broken file offset bits detection.

We are not detecting the need to do -D_FILE_OFFSET_BITS=64
correct, resulting in no large file support on 32 bit
platforms based on Glibc. This is a regression since TXR 244.

* configure: We must pass EXTRA_FLAGS=-D$try to
actually try the options we are looping over.  This argument
was accidentally removed in commit
30ce19ab9e58fe885241bfcdbe3ae20ee2a8e1e1
on October 9, 2020, when the conftest_symns command was
changed to conftest_o.

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index 8597c573..2e395da7 100755
--- a/configure
+++ b/configure
@@ -3416,7 +3416,7 @@ struct sizes {
 };
 
 !
-  if ! conftest_o ; then
+  if ! conftest_o EXTRA_FLAGS=-D$try ; then
     printf "failed\n\n"
 
     printf "Errors from compilation: \n\n"