m4: Fix detecting libsodium to use LIBS instead of LDFLAGS

Patch by Eray Aslan

diff --git a/m4/want_sodium.m4 b/m4/want_sodium.m4
index ba58661babb20032fc5d8ab91698ca276c117bd0..f82edeb55d18f06972ca9e6dbb91e0a30e4474db 100644 (file)
--- a/m4/want_sodium.m4
+++ b/m4/want_sodium.m4
@@ -1,14 +1,14 @@
 AC_DEFUN([DOVECOT_WANT_SODIUM], [
   AS_IF([test "$want_sodium" != "no"], [
     PKG_CHECK_MODULES(LIBSODIUM, libsodium, [
-      OLD_LDFLAGS="$LDFLAGS"
-      LDFLAGS="$LDFLAGS $LIBSODIUM_LIBS"
+      OLD_LIBS="$LIBS"
+      LIBS="$LIBS $LIBSODIUM_LIBS"
       AC_CHECK_FUNC([crypto_pwhash_str_verify], [
         have_sodium=yes
         AUTH_LIBS="$AUTH_LIBS $LIBSODIUM_LIBS"
         AC_DEFINE(HAVE_LIBSODIUM, [1], [Define if you have libsodium])
       ])
-      LDFLAGS="$OLD_LDFLAGS"
+      LIBS="$OLD_LIBS"
     ], [have_sodium=no])
     AS_IF([test "$want_sodium" = "yes" && test "$have_sodium" != "yes"] , [
       AC_ERROR([Can't build with libsodium: not found])