gh-98636: Fix detecting gdbm_compat for _dbm module (#98643)

Fix the gdbm_compat library detection logic to actually check for
-lgdbm_compat independently of the ndbm detection.
This fixes the build failure with `--with-dbmliborder=gdbm`,
and implicit fallback to ndbm with the default value.

1 files changed, 4 insertions, 1 deletions

diff --git a/configure b/configure
index 4841c1d..5b6750a 100755
--- a/configure
+++ b/configure
@@ -14710,6 +14710,7 @@ fi
 { ac_cv_header_gdbm_ndbm_h=; unset ac_cv_header_gdbm_ndbm_h;}
 
 if test "$ac_cv_header_gdbm_slash_ndbm_h" = yes -o "$ac_cv_header_gdbm_dash_ndbm_h" = yes; then
+  { ac_cv_search_dbm_open=; unset ac_cv_search_dbm_open;}
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
 save_LDFLAGS=$LDFLAGS
@@ -14769,7 +14770,9 @@ $as_echo "$ac_cv_search_dbm_open" >&6; }
 ac_res=$ac_cv_search_dbm_open
 if test "$ac_res" != no; then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
+  have_gdbm_compat=yes
+else
+  have_gdbm_compat=no
 fi