Build wallet with Android NDK

CMakeLists.txt

@@ -375,6 +375,13 @@ else()
     set(STATIC_ASSERT_FLAG "-Dstatic_assert=_Static_assert")
   endif()
 
+  try_compile(STATIC_ASSERT_CPP_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.cpp" COMPILE_DEFINITIONS "-std=c++11")
+  if(STATIC_ASSERT_CPP_RES)
+    set(STATIC_ASSERT_CPP_FLAG "")
+  else()
+    set(STATIC_ASSERT_CPP_FLAG "-Dstatic_assert=_Static_assert")
+  endif()
+
   option(COVERAGE "Enable profiling for test coverage report" 0)
 
   if(COVERAGE)
@@ -410,7 +417,7 @@ else()
   endif()
 
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG} ${COVERAGE_FLAGS} ${PIC_FLAG}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG} ${COVERAGE_FLAGS} ${PIC_FLAG}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_CPP_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG} ${COVERAGE_FLAGS} ${PIC_FLAG}")
 
   # With GCC 6.1.1 the compiled binary malfunctions due to aliasing. Until that
   # is fixed in the code (Issue #847), force compiler to be conservative.
@@ -494,6 +501,13 @@ else()
 
   endif(ARM)
 
+  if(ANDROID AND NOT BUILD_GUI_DEPS STREQUAL "ON")
+    #From Android 5: "only position independent executables (PIE) are supported" 
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIE")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIE")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_CXX_FLAGS} -fPIE -pie")
+  endif()
+
   if(APPLE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DGTEST_HAS_TR1_TUPLE=0")
   endif()
@@ -580,7 +594,7 @@ endif()
 include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
 if(MINGW)
   set(EXTRA_LIBRARIES mswsock;ws2_32;iphlpapi)
-elseif(APPLE OR FREEBSD OR OPENBSD)
+elseif(APPLE OR FREEBSD OR OPENBSD OR ANDROID)
   set(EXTRA_LIBRARIES "")
 elseif(DRAGONFLY)
   find_library(COMPAT compat)

Makefile

@@ -70,6 +70,10 @@ release-static-armv7:
 	mkdir -p build/release
 	cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
 
+release-static-android:
+	mkdir -p build/release
+	cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D ANDROID=true -D INSTALL_VENDORED_LIBUNBOUND=ON ../.. && $(MAKE)
+
 release-static-armv8:
 	mkdir -p build/release
 	cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv8-a" -D STATIC=ON -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)

cmake/test-static-assert.cpp

@@ -0,0 +1,34 @@
+// Copyright (c) 2014-2016, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <assert.h>
+
+static_assert(1, "FAIL");
+int main(int argc, char *argv[]) {
+	return 0;
+}

contrib/epee/include/console_handler.h

@@ -133,7 +133,7 @@ namespace epee
     bool wait_stdin_data()
     {
 #if !defined(WIN32)
-      #ifdef __OpenBSD__
+      #if defined(__OpenBSD__) || defined(__ANDROID__)
       int stdin_fileno = fileno(stdin);
       #else
       int stdin_fileno = ::fileno(stdin);

external/db_drivers/liblmdb/CMakeLists.txt

@@ -30,6 +30,11 @@ if(FREEBSD)
   add_definitions(-DMDB_DSYNC=O_SYNC)
 endif()
 
+if(ANDROID)
+  add_definitions("-DANDROID=1")
+endif()
+
+
 set (lmdb_sources
 mdb.c
 midl.c)

external/unbound/compat/getentropy_linux.c

@@ -30,7 +30,13 @@
 #ifdef HAVE_SYS_SYSCTL_H
 #include <sys/sysctl.h>
 #endif
+#ifdef __ANDROID__
+#include <sys/vfs.h> 
+#define statvfs statfs 
+#define fstatvfs fstatfs 
+#else
 #include <sys/statvfs.h>
+#endif
 #include <sys/socket.h>
 #include <sys/mount.h>
 #include <sys/mman.h>

src/common/int-util.h

@@ -36,6 +36,10 @@
 #include <string.h>
 #include <sys/param.h>
 
+#if defined(__ANDROID__)
+#include <byteswap.h>
+#endif
+
 #if defined(_MSC_VER)
 #include <stdlib.h>
 
@@ -138,16 +142,24 @@ static inline uint32_t ident32(uint32_t x) { return x; }
 static inline uint64_t ident64(uint64_t x) { return x; }
 
 #ifndef __OpenBSD__
+#  if defined(__ANDROID__) && defined(__swap32) && !defined(swap32)
+#      define swap32 __swap32
+#  elif !defined(swap32)
 static inline uint32_t swap32(uint32_t x) {
   x = ((x & 0x00ff00ff) << 8) | ((x & 0xff00ff00) >> 8);
   return (x << 16) | (x >> 16);
 }
+#  endif
+#  if defined(__ANDROID__) && defined(__swap64) && !defined(swap64)
+#      define swap64 __swap64
+#  elif !defined(swap64)
 static inline uint64_t swap64(uint64_t x) {
   x = ((x & 0x00ff00ff00ff00ff) <<  8) | ((x & 0xff00ff00ff00ff00) >>  8);
   x = ((x & 0x0000ffff0000ffff) << 16) | ((x & 0xffff0000ffff0000) >> 16);
   return (x << 32) | (x >> 32);
 }
 #  endif
+#endif /* __OpenBSD__ */
 
 #if defined(__GNUC__)
 #define UNUSED __attribute__((unused))

src/crypto/CMakeLists.txt

@@ -89,3 +89,14 @@ if (ARM)
       PROPERTY COMPILE_DEFINITIONS "NO_OPTIMIZED_MULTIPLY_ON_ARM")
   endif()
 endif()
+
+# Because of the way Qt works on android with JNI, the code does not live in the main android thread
+# So this code runs with a 1 MB default stack size. 
+# This will force the use of the heap for the allocation of the scratchpad
+if (ANDROID)
+  if( BUILD_GUI_DEPS )
+    add_definitions(-DFORCE_USE_HEAP=1)
+  endif()
+endif()
+
+

src/crypto/oaes_lib.c

@@ -39,8 +39,8 @@
  #include <malloc.h>
 #endif
 
-// FreeBSD, and OpenBSD also don't need timeb.h
+// ANDROID, FreeBSD, and OpenBSD also don't need timeb.h
-#if !defined(__FreeBSD__) && !defined(__OpenBSD__)
+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__ANDROID__)
  #include <sys/timeb.h>
 #else
  #include <sys/time.h>
@@ -499,7 +499,7 @@ static void oaes_get_seed( char buf[RANDSIZ + 1] )
 #else
 static uint32_t oaes_get_seed(void)
 {
-        #if !defined(__FreeBSD__) && !defined(__OpenBSD__)
+        #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__ANDROID__)
 	struct timeb timer;
 	struct tm *gmTimer;
 	char * _test = NULL;

src/crypto/slow-hash.c

@@ -1052,7 +1052,6 @@ STATIC INLINE void xor_blocks(uint8_t* a, const uint8_t* b)
 
 void cn_slow_hash(const void *data, size_t length, char *hash)
 {
-    uint8_t long_state[MEMORY];
     uint8_t text[INIT_SIZE_BYTE];
     uint8_t a[AES_BLOCK_SIZE];
     uint8_t b[AES_BLOCK_SIZE];
@@ -1070,6 +1069,13 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
         hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
     };
 
+#ifndef FORCE_USE_HEAP
+    uint8_t long_state[MEMORY];
+#else
+    uint8_t *long_state = NULL;
+    long_state = (uint8_t *)malloc(MEMORY);
+#endif
+
     hash_process(&state.hs, data, length);
     memcpy(text, state.init, INIT_SIZE_BYTE);
 
@@ -1129,6 +1135,9 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
     memcpy(state.init, text, INIT_SIZE_BYTE);
     hash_permutation(&state.hs);
     extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
+#ifdef FORCE_USE_HEAP
+    free(long_state);
+#endif
 }
 #endif /* !aarch64 || !crypto */