Build libcares.so on Android.

Adds ares_config.h (derived from ares_config.h.in) and Android.mk. Also,
some small fixes to make the code build without errors:

 ares_build.h: CARES_SIZEOF_LONG defaults to sizeof(long) if no other
 case applies; while this seems to defeat the purpose of defining
 a macro, it works.

 ares_nowarn.c: If HAVE_LIMITS_H is defined, include limits.h and use
 INT_MAX and UINT_MAX as needed.

Bug: 22545809
Change-Id: I628ce2659f6503a415d06db3e223d9ef00956ddb

4 files changed, 549 insertions, 0 deletions

diff --git a/Android.mk b/Android.mk
new file mode 100644
index 0000000..8f8c361
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,23 @@
+# Copyright (C) 2015 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(LOCAL_PATH)/Makefile.inc
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libcares
+LOCAL_CFLAGS += -DHAVE_CONFIG_H
+LOCAL_SRC_FILES := $(CSOURCES)
+include $(BUILD_SHARED_LIBRARY)
diff --git a/ares_build.h b/ares_build.h
index 2736cff..e2c14c6 100644
--- a/ares_build.h
+++ b/ares_build.h
@@ -220,6 +220,8 @@
 #    define CARES_SIZEOF_LONG           4
 #  elif defined(__x86_64__) || defined(__ppc64__)
 #    define CARES_SIZEOF_LONG           8
+#  else
+#    define CARES_SIZEOF_LONG           sizeof(long)
 #  endif
 #  define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
 #  define CARES_SIZEOF_ARES_SOCKLEN_T 4
diff --git a/ares_config.h b/ares_config.h
new file mode 100644
index 0000000..2a4c51d
--- /dev/null
+++ b/ares_config.h
@@ -0,0 +1,517 @@
+/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* define this if ares is built for a big endian system */
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#  define ARES_BIG_ENDIAN 1
+#endif
+
+/* when building as static part of libcurl */
+#undef BUILDING_LIBCURL
+
+/* when building c-ares library */
+#define CARES_BUILDING_LIBRARY 1
+
+/* when not building a shared library */
+#undef CARES_STATICLIB
+
+/* Define to 1 to enable hiding of library internal symbols. */
+#undef CARES_SYMBOL_HIDING
+
+/* Definition to make a library symbol externally visible. */
+#undef CARES_SYMBOL_SCOPE_EXTERN
+
+/* if a /etc/inet dir is being used */
+#undef ETC_INET
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#undef GETSERVBYPORT_R_ARGS
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#undef GETSERVBYPORT_R_BUFSIZE
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+#undef HAVE_BITNCMP
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+#undef HAVE_CLOSESOCKET
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+#undef HAVE_CLOSESOCKET_CAMEL
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the getenv function. */
+#define HAVE_GETENV 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#undef HAVE_GETSERVBYPORT_R
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
+#undef HAVE_INET_NET_PTON
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+#define HAVE_IOCTLSOCKET 1
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+#define HAVE_IOCTLSOCKET_CAMEL 1
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+   */
+#define HAVE_IOCTLSOCKET_CAMEL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+#define HAVE_IOCTLSOCKET_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+#define HAVE_LIBRESOLVE 1
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+#define HAVE_SETSOCKOPT_SO_NONBLOCK 1
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+#define HAVE_SIG_ATOMIC_T_VOLATILE 1
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+#define HAVE_SOCKET_H 1
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+#define HAVE_STRNCMPI 1
+
+/* Define to 1 if you have the strnicmp function. */
+#define HAVE_STRNICMP 1
+
+/* Define to 1 if you have the <stropts.h> header file. */
+#define HAVE_STROPTS_H 1
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+#undef HAVE_WINDOWS_H
+
+/* Define to 1 if you have the winsock2.h header file. */
+#undef HAVE_WINSOCK2_H
+
+/* Define to 1 if you have the winsock.h header file. */
+#undef HAVE_WINSOCK_H
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+#undef HAVE_WS2TCPIP_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Define to 1 if you are building a native Windows target. */
+#undef NATIVE_WINDOWS
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+#undef NEED_MALLOC_H
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+#undef NEED_MEMORY_H
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+#undef NEED_REENTRANT
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+#undef NEED_THREAD_SAFE
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+#undef NO_MINUS_C_MINUS_O
+
+/* cpu-machine-OS */
+#undef OS
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* a suitable file/device to read random data from */
+#undef RANDOM_FILE
+
+/* Define to the type qualifier pointed by arg 5 for recvfrom. */
+#define RECVFROM_QUAL_ARG5 const
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+#undef RECVFROM_TYPE_ARG5_IS_VOID
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+#undef RECVFROM_TYPE_ARG6_IS_VOID
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV ssize_t
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV ssize_t
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV ssize_t
+
+/* The size of `int', as computed by sizeof. */
+#undef SIZEOF_INT
+
+/* The size of `long', as computed by sizeof. */
+#undef SIZEOF_LONG
+
+/* The size of `size_t', as computed by sizeof. */
+#undef SIZEOF_SIZE_T
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#undef SIZEOF_STRUCT_IN6_ADDR
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#undef SIZEOF_STRUCT_IN_ADDR
+
+/* The size of `time_t', as computed by sizeof. */
+#undef SIZEOF_TIME_T
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+#undef USE_BLOCKING_SOCKETS
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to avoid automatic inclusion of winsock.h */
+#undef WIN32_LEAN_AND_MEAN
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+#  undef _ALL_SOURCE
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+#undef in_addr_t
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
+
+/* the signed version of size_t */
+#undef ssize_t
diff --git a/ares_nowarn.c b/ares_nowarn.c
index 701add5..0ed015c 100644
--- a/ares_nowarn.c
+++ b/ares_nowarn.c
@@ -21,6 +21,10 @@
 #  include <assert.h>
 #endif
 
+#ifdef HAVE_LIMITS_H
+#  include <limits.h>
+#endif
+
 #if defined(__INTEL_COMPILER) && defined(__unix__)
 
 #ifdef HAVE_SYS_SOCKET_H
@@ -51,6 +55,9 @@
 #elif (SIZEOF_INT == 16)
 #  define CARES_MASK_SINT  0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
 #  define CARES_MASK_UINT  0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
+#elif defined(HAVE_LIMITS_H)
+#  define CARES_MASK_SINT  INT_MAX
+#  define CARES_MASK_UINT  UINT_MAX
 #endif
 
 /*