with-libgcrypt-prefix.patch

--- src/libssh2-1.8.0.orig/acinclude.m4	2016-09-27 16:06:35.000000000 +1000
+++ src/libssh2-1.8.0/acinclude.m4	2017-07-11 15:34:35.000000000 +1000
@@ -412,9 +412,9 @@
 
   old_LDFLAGS=$LDFLAGS
   old_CFLAGS=$CFLAGS
-  if test -n "$use_libgcrypt" && test "$use_libgcrypt" != "no"; then
-    LDFLAGS="$LDFLAGS -L$use_libgcrypt/lib"
-    CFLAGS="$CFLAGS -I$use_libgcrypt/include"
+  if test -n "$with_libgcrypt_prefix" && test "$use_libgcrypt" != "no"; then
+    LDFLAGS="$LDFLAGS -L$with_libgcrypt_prefix/lib"
+    CFLAGS="$CFLAGS -I$with_libgcrypt_prefix/include"
   fi
   AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [
     #include <gcrypt.h>