Dirty patch for gnupg to run on Android 6+, without link()

android/external/Makefile

@@ -12,7 +12,7 @@ NDK_ABI ?= arm
 NDK_TOOLCHAIN_VERSION ?= 4.8
 APP_ABI ?= armeabi-v7a
 APP_PLATFORM ?= android-15
-PEP_PACKAGE_NAME ?= com.pep.pepjniaaractivity
+PEP_PACKAGE_NAME ?= com.pep.k9
 
 all: build assets
 
@@ -327,6 +327,7 @@ gnupg/configure: gnupg.src.stamp gnupg/configure.ac
 
 gnupg/Makefile: gnupg/configure
 	-patch -N -p1 --reject-file=- gnupg/gl/stdint_.h gnupg_fix_gmulib_stdint_with_bionic.patch
+	-patch -N -p1 --reject-file=- gnupg/jnlib/dotlock.c gnupg_use_rename_for_dotlock.patch
 	cd gnupg && \
 		CC="$(CC)" AR="$(AR)" RANLIB=$(RANLIB) CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
 			./configure \

android/external/gnupg_use_rename_for_dotlock.patch

@@ -0,0 +1,38 @@
+--- dotlock.c.orig	2015-12-01 01:07:02.212643687 +0100
++++ dotlock.c	2015-12-01 01:07:46.746899721 +0100
+@@ -412,7 +412,7 @@
+   for (;;)
+     {
+ #ifndef HAVE_DOSISH_SYSTEM
+-# ifndef __riscos__
++# if 0 /*ndef __riscos__
+       if ( !link(h->tname, h->lockname) )
+         {
+           /* fixme: better use stat to check the link count */
+@@ -425,7 +425,7 @@
+           return -1;
+ 	}
+ # else /* __riscos__ */
+-      if ( !renamefile(h->tname, h->lockname) )
++      if ( !rename(h->tname, h->lockname) )
+         {
+           h->locked = 1;
+           return 0; /* okay */
+@@ -562,7 +562,7 @@
+       return -1;
+     }
+ 
+-#ifndef __riscos__
++# if 0 /*ndef __riscos__
+   if ( unlink( h->lockname ) )
+     {
+       log_error ("release_dotlock: error removing lockfile `%s'\n",
+@@ -572,7 +572,7 @@
+   /* Fixme: As an extra check we could check whether the link count is
+      now really at 1. */
+ #else /* __riscos__ */
+-  if ( renamefile (h->lockname, h->tname) )
++  if ( rename (h->lockname, h->tname) )
+     {
+       log_error ("release_dotlock: error renaming lockfile `%s' to `%s'\n",
+                  h->lockname, h->tname);