diff --git a/m4/gpg-error.m4 b/m4/gpg-error.m4
index 0964a268f..a9d572fb5 100644
--- a/m4/gpg-error.m4
+++ b/m4/gpg-error.m4
@@ -9,7 +9,7 @@
 # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 #
-# Last-changed: 2018-10-29
+# Last-changed: 2018-11-02
 
 
 dnl AM_PATH_GPG_ERROR([MINIMUM-VERSION,
@@ -64,15 +64,42 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
   min_gpg_error_version=ifelse([$1], ,1.33,$1)
   ok=no
 
-  use_gpgrt_config=""
-  if test "$GPG_ERROR_CONFIG" = "no"; then
+  if test "$prefix" = NONE ; then
+    prefix_option_expanded=/usr/local
+  else
+    prefix_option_expanded="$prefix"
+  fi
+  if test "$exec_prefix" = NONE ; then
+    exec_prefix_option_expanded=$prefix_option_expanded
+  else
+    exec_prefix_option_expanded=$(prefix=$prefix_option_expanded eval echo $exec_prefix)
+  fi
+  libdir_option_expanded=$(prefix=$prefix_option_expanded exec_prefix=$exec_prefix_option_expanded eval echo $libdir)
+
+  if test -f $libdir_option_expanded/pkgconfig/gpg-error.pc; then
+    gpgrt_libdir=$libdir_option_expanded
+  else
+    if crt1_path=$(${CC:-cc} -print-file-name=crt1.o 2>/dev/null); then
+      if possible_libdir=$(cd ${crt1_path%/*} && pwd 2>/dev/null); then
+        if test -f $possible_libdir/pkgconfig/gpg-error.pc; then
+          gpgrt_libdir=$possible_libdir
+        fi
+      fi
+    fi
+  fi
+
+  if test "$GPG_ERROR_CONFIG" = "no" -a -n "$gpgrt_libdir"; then
     AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no)
-    if test "$GPGRT_CONFIG" != "no"; then
-      GPGRT_CONFIG="$GPGRT_CONFIG --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir"
+    if test "$GPGRT_CONFIG" = "no"; then
+      unset GPGRT_CONFIG
+    else
+      GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"
       if $GPGRT_CONFIG gpg-error >/dev/null 2>&1; then
         GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"
-        use_gpgrt_config=yes
+        AC_MSG_NOTICE([Use gpgrt-config with $gpgrt_libdir as gpg-error-config])
         gpg_error_config_version=`$GPG_ERROR_CONFIG --modversion`
+      else
+        unset GPGRT_CONFIG
       fi
     fi
   else
@@ -96,13 +123,19 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
             fi
         fi
     fi
-    if test -z "$GPGRT_CONFIG"; then
+    if test -z "$GPGRT_CONFIG" -a -n "$gpgrt_libdir"; then
       if test "$major" -gt 1 -o "$major" -eq 1 -a "$minor" -ge 33; then
         AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no)
-        if test "$GPGRT_CONFIG" != "no"; then
-          GPGRT_CONFIG="$GPGRT_CONFIG --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir"
-          GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"
-          use_gpgrt_config=yes
+        if test "$GPGRT_CONFIG" = "no"; then
+          unset GPGRT_CONFIG
+        else
+          GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"
+          if $GPGRT_CONFIG gpg-error >/dev/null 2>&1; then
+            GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"
+            AC_MSG_NOTICE([Use gpgrt-config with $gpgrt_libdir as gpg-error-config])
+          else
+            unset GPGRT_CONFIG
+          fi
         fi
       fi
     fi
@@ -111,7 +144,7 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
   if test $ok = yes; then
     GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG --cflags`
     GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG --libs`
-    if test -z "$use_gpgrt_config"; then
+    if test -z "$GPGRT_CONFIG"; then
       GPG_ERROR_MT_CFLAGS=`$GPG_ERROR_CONFIG --mt --cflags 2>/dev/null`
       GPG_ERROR_MT_LIBS=`$GPG_ERROR_CONFIG --mt --libs 2>/dev/null`
     else
@@ -122,7 +155,7 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
     fi
     AC_MSG_RESULT([yes ($gpg_error_config_version)])
     ifelse([$2], , :, [$2])
-    if test -z "$use_gpgrt_config"; then
+    if test -z "$GPGRT_CONFIG"; then
       gpg_error_config_host=`$GPG_ERROR_CONFIG --host 2>/dev/null || echo none`
     else
       gpg_error_config_host=`$GPG_ERROR_CONFIG --variable=host 2>/dev/null || echo none`
diff --git a/m4/ksba.m4 b/m4/ksba.m4
index ee4b96256..ad8de4f32 100644
--- a/m4/ksba.m4
+++ b/m4/ksba.m4
@@ -46,6 +46,7 @@ AC_DEFUN([AM_PATH_KSBA],
   if test x"$KSBA_CONFIG" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
     if $GPGRT_CONFIG ksba --exists; then
       KSBA_CONFIG="$GPGRT_CONFIG ksba"
+      AC_MSG_NOTICE([Use gpgrt-config as ksba-config])
       use_gpgrt_config=yes
     fi
   fi
diff --git a/m4/libassuan.m4 b/m4/libassuan.m4
index 52058ea85..4af2d04f5 100644
--- a/m4/libassuan.m4
+++ b/m4/libassuan.m4
@@ -30,6 +30,7 @@ AC_DEFUN([_AM_PATH_LIBASSUAN_COMMON],
   if test x"${LIBASSUAN_CONFIG}" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
     if $GPGRT_CONFIG libassuan --exists; then
       LIBASSUAN_CONFIG="$GPGRT_CONFIG libassuan"
+      AC_MSG_NOTICE([Use gpgrt-config as libassuan-config])
       use_gpgrt_config=yes
     fi
   fi
diff --git a/m4/libgcrypt.m4 b/m4/libgcrypt.m4
index 2646e96c5..40ea01c2c 100644
--- a/m4/libgcrypt.m4
+++ b/m4/libgcrypt.m4
@@ -9,7 +9,7 @@
 # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 #
-# Last-changed: 2018-10-29
+# Last-changed: 2018-11-02
 
 
 dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
@@ -56,6 +56,7 @@ AC_DEFUN([AM_PATH_LIBGCRYPT],
   if test x"${LIBGCRYPT_CONFIG}" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
     if $GPGRT_CONFIG libgcrypt --exists; then
       LIBGCRYPT_CONFIG="$GPGRT_CONFIG libgcrypt"
+      AC_MSG_NOTICE([Use gpgrt-config as libgcrypt-config])
       use_gpgrt_config=yes
     fi
   fi
diff --git a/m4/npth.m4 b/m4/npth.m4
index 7296cbc12..7d3e73f00 100644
--- a/m4/npth.m4
+++ b/m4/npth.m4
@@ -22,6 +22,7 @@ AC_DEFUN([_AM_PATH_NPTH_CONFIG],
   if test x"$NPTH_CONFIG" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
     if $GPGRT_CONFIG npth --exists; then
       NPTH_CONFIG="$GPGRT_CONFIG npth"
+      AC_MSG_NOTICE([Use gpgrt-config as npth-config])
       use_gpgrt_config=yes
     fi
   fi
diff --git a/m4/ntbtls.m4 b/m4/ntbtls.m4
index c4e07dc56..7bbd5699c 100644
--- a/m4/ntbtls.m4
+++ b/m4/ntbtls.m4
@@ -50,6 +50,7 @@ AC_DEFUN([AM_PATH_NTBTLS],
   if test x"${NTBTLS_CONFIG}" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
     if $GPGRT_CONFIG ntbtls --exists; then
       NTBTLS_CONFIG="$GPGRT_CONFIG ntbtls"
+      AC_MSG_NOTICE([Use gpgrt-config as ntbtls-config])
       use_gpgrt_config=yes
     fi
   fi