diff --git a/glib/configure.ac b/glib/configure.ac
index 3bba0fd..d551832 100644
--- a/glib/configure.ac
+++ b/glib/configure.ac
@@ -294,8 +294,6 @@ AC_PROG_INSTALL
 
 AC_SYS_LARGEFILE
 
-PKG_PROG_PKG_CONFIG(0.16)
-
 if test "x$enable_debug" = "xyes"; then
   if test x$cflags_set != xset ; then
       case " $CFLAGS " in
@@ -454,23 +452,6 @@ AC_MSG_RESULT($enable_iconv_cache)
 
 
 dnl
-dnl zlib support
-dnl
-PKG_CHECK_MODULES([ZLIB], [zlib], [found_zlib=yes], [found_zlib=no])
-if test "x$found_zlib" = "xno" ; then
-  AC_CHECK_LIB(z, inflate, [AC_CHECK_HEADER(zlib.h, found_zlib=yes)])
-  if test "x$found_zlib" = "xno" ; then
-    AC_MSG_ERROR([*** Working zlib library and headers not found ***])
-  fi
-  ZLIB_LIBS='-lz'
-  AC_SUBST(ZLIB_LIBS)
-fi
-
-PKG_CHECK_MODULES(LIBFFI, [libffi >= 3.0.0])
-AC_SUBST(LIBFFI_CFLAGS)
-AC_SUBST(LIBFFI_LIBS)
-
-dnl
 dnl gettext support
 dnl
 
@@ -1799,28 +1780,6 @@ dnl   failure. try libattr
 fi
 AC_SUBST(XATTR_LIBS)
 
-dnl ************************
-dnl *** check for libelf ***
-dnl ************************
-
-PKG_CHECK_MODULES([LIBELF], [libelf], [have_libelf=yes], [have_libelf=maybe])
-
-if test $have_libelf = maybe; then
-  AC_CHECK_LIB([elf], [elf_begin], , [have_libelf=no])
-  AC_CHECK_LIB([elf], [elf_getshdrstrndx], , [have_libelf=no])
-  AC_CHECK_LIB([elf], [elf_getshdrnum], , [have_libelf=no])
-  AC_CHECK_HEADER([libelf.h], , [have_libelf=no])
-
-  if test $have_libelf != no; then
-    LIBELF_LIBS=-lelf
-    have_libelf = yes
-  fi
-fi
-
-if test $have_libelf = yes; then
-  AC_DEFINE(HAVE_LIBELF, 1, [Define if libelf is available])
-fi
-
 dnl ****************************************
 dnl *** platform dependent source checks ***
 dnl ****************************************
@@ -3355,12 +3314,7 @@ AC_CHECK_ALIGNOF([unsigned long])
 # Check for libdbus1 - Optional - is only used in the GDBus test cases
 #
 # 1.2.14 required for dbus_message_set_serial
-PKG_CHECK_MODULES(DBUS1,
-                  dbus-1 >= 1.2.14,
-                  [AC_DEFINE(HAVE_DBUS1, 1, [Define if dbus-1 is available]) have_dbus1=yes],
-                  have_dbus1=no)
-AC_SUBST(DBUS1_CFLAGS)
-AC_SUBST(DBUS1_LIBS)
+have_dbus1=no
 AM_CONDITIONAL(HAVE_DBUS1, [test "x$have_dbus1" = "xyes"])
 
 dnl