--- configure.ac.orig	2022-07-26 10:17:29 UTC
+++ configure.ac
@@ -82,7 +82,7 @@ LIBS="$PTHREAD_LIBS $LIBS"
 AX_PTHREAD(,[AC_MSG_ERROR([Could not find Pthreads support])])
 
 LIBS="$PTHREAD_LIBS $LIBS"
-LIBS="$PTHREAD_CFLAGS $CFLAGS"
+CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
 CC="$PTHREAD_CC"
 
 AC_CHECK_HEADERS([gssapi/gssapi.h],,[AC_MSG_ERROR([Could not find GSSAPI headers])])
@@ -135,15 +135,31 @@ if test x$only_gss_module != xyes; then
 if test x$only_gss_module != xyes; then
     WITH_POPT
 
-    PKG_CHECK_MODULES([VERTO], [libverto >= 0.2.2],
-      [
-        AC_CHECK_LIB(verto, verto_free,,
-            AC_MSG_ERROR(["Error: libverto is not found or lacks verto_free"]))
-        AC_CHECK_FUNCS(verto_cleanup,,
-            AC_MSG_WARN(["Warning: libverto lacks verto_cleanup function"]))
-      ], [
-        AC_MSG_ERROR([Could not find VERTO headers])
-      ])
+    case "$host_os" in
+    freebsd*)
+        AC_CHECK_HEADERS([verto.h], [],
+                         [AC_MSG_ERROR([Could not find VERTO headers])])
+        VERTO_CFLAGS=""
+        VERTO_LIBS="-lverto"
+        AC_CHECK_LIB([verto], [verto_free], [],
+                     [AC_MSG_ERROR([Error: libverto is not found or lacks verto_free])])
+        AC_CHECK_FUNCS([verto_cleanup], [],
+                       [AC_MSG_WARN([Warning: libverto lacks verto_cleanup function])])
+        AC_SUBST([VERTO_CFLAGS])
+        AC_SUBST([VERTO_LIBS])
+        ;;
+    *)
+        PKG_CHECK_MODULES([VERTO], [libverto >= 0.2.2],
+          [
+            AC_CHECK_LIB(verto, verto_free,,
+                AC_MSG_ERROR(["Error: libverto is not found or lacks verto_free"]))
+            AC_CHECK_FUNCS(verto_cleanup,,
+                AC_MSG_WARN(["Warning: libverto lacks verto_cleanup function"]))
+          ], [
+            AC_MSG_ERROR([Could not find VERTO headers])
+          ])
+        ;;
+    esac
 
 
     WITH_LIBINI_CONFIG