Initial version of CMake build.

This is just a basic build of the library. No options are support, and the only builds tested are Xenial and MacOS (the latter using the Brew openssl package, and so requiring -DOPENSSL_ROOT_DIR=/usr/local/Cellar/openssl/1.0.2l option on the cmake command line). Using the library is untested.
2018-01-08 15:36:35 +00:00 · 2018-01-08 15:36:35 +00:00 · 1ecc7b3c26
parent 2ff1bf6152
commit 1ecc7b3c26
4 changed files with 646 additions and 0 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -0,0 +1,245 @@
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+
+set(CMAKE_VERBOSE_MAKEFILE_ON)
+
+# The following must be set BEFORE doing project() or enable_language().
+if (NOT CMAKE_BUILD_TYPE)
+  message(STATUS "No build type defined; defaulting to 'Debug'")
+  set(CMAKE_BUILD_TYPE "Debug" CACHE STRING
+    "The type of build. Possible values are: Debug, Release, RelWithDebInfo and MinSizeRel.")
+endif()
+
+set(PACKAGE "getdns")
+set(PACKAGE_NAME "getdns")
+set(PACKAGE_VERSION "1.3.0")
+set(PACKAGE_BUGREPORT "team@getdnsapi.net")
+
+set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
+set(PACKAGE_TARNAME "${PACKAGE}-${PACKAGE_VERSION}")
+
+# Dont forget to put a dash in front of the release candidate!!!
+# That is how it is done with semantic versioning!
+set(RELEASE_CANDIDATE "")
+
+set(GETDNS_VERSION "${PACKAGE_VERSION}${RELEASE_CANDIDATE}")
+set(GETDNS_NUMERIC_VERSION 0x01030000)
+set(API_VERSION "December 2015")
+set(API_NUMERIC_VERSION 0x07df0c00)
+set(GETDNS_COMPILATION_COMMENT "${PACKAGE_NAME} ${GETDNS_VERSION} configured on <date> for the ${API_VERSION} of the API")
+
+set(GETDNS_LIBVERSION "9:0:3")
+
+include(CheckFunctionExists)
+include(CheckLibraryExists)
+include(CheckIncludeFile)
+include(CheckSymbolExists)
+include(CheckTypeSize)
+
+project(getdns VERSION ${PACKAGE_VERSION})
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
+
+find_package(PkgConfig)
+
+# Directories
+include(GNUInstallDirs)
+
+if (DEFINED CMAKE_INSTALL_FULL_RUNSTATEDIR)
+  set(RUNSTATEDIR "${CMAKE_INSTALL_FULL_RUNSTATEDIR}")
+else ()
+  set(RUNSTATEDIR "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/run")
+endif ()
+install(
+  DIRECTORY
+  DESTINATION ${RUNSTATEDIR}
+  DIRECTORY_PERMISSIONS
+  OWNER_READ OWNER_WRITE OWNER_EXECUTE
+  GROUP_READ GROUP_EXECUTE
+  WORLD_READ WORLD_EXECUTE
+  )
+
+# Always have build dir as an include directory.
+include_directories(
+  ${CMAKE_CURRENT_BINARY_DIR}
+  )
+
+# File locations
+set(TRUST_ANCHOR_FILE "${CMAKE_INSTALL_FULL_SYSCONF_DIR}/unbound/getdns-root.key")
+
+# Options.
+set(DNSSEC_ROADBLOCK_AVOIDANCE 1)        # Nail on, as build fails if off.
+set(MAXIMUM_UPSTREAM_OPTION_SPACE 3000)
+set(EDNS_PADDING_OPCODE 12)
+set(MAX_CNAME_REFERRALS 100)
+set(DRAFT_RRTYPES 1)
+set(EDNS_COOKIE_OPCODE 10)
+set(EDNS_COOKIE_ROLLOVER_TIME "(24*60*60)")
+
+# Platform
+if (WIN32 OR MINGW OR MSYS OR CYGWIN)
+  set(HOSTOS "windows")
+elseif (APPLE)
+  set(HOSTOS "macos")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_DARWIN_C_SOURCE")
+elseif (UNIX)
+  set(HOSTOS "unix")
+
+  if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    set(LINUX 1)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_BSD_SOURCE -D_DEFAULT_SOURCE")
+  elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Solaris")
+    set(SOLARIS 1)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__EXTENSIONS_")
+  endif()
+endif ()
+
+# Does the compiler accept the "format" attribute?
+try_compile(HAVE_ATTR_FORMAT
+  ${CMAKE_BINARY_DIR}
+  ${CMAKE_SOURCE_DIR}/cmake/tests/test_format_attr.c
+  )
+# Does the compiler accept the "unused" attribute?
+try_compile(HAVE_ATTR_UNUSED
+  ${CMAKE_BINARY_DIR}
+  ${CMAKE_SOURCE_DIR}/cmake/tests/test_unused_attr.c
+  )
+
+# Compiler flags
+
+# Check for include files
+check_include_file(assert.h HAVE_ASSERT_H)
+check_include_file(inttypes.h HAVE_INTTYPES_H)
+check_include_file(limits.h HAVE_LIMITS_H)
+check_include_file(sys/limits.h HAVE_SYS_LIMITS_H)
+check_include_file(stdarg.h HAVE_STDARG_H)
+check_include_file(stdint.h HAVE_STDINT_H)
+check_include_file(stdio.h HAVE_STDIO_H)
+check_include_file(stdlib.h HAVE_STDLIB_H)
+check_include_file(string.h HAVE_STRING_H)
+check_include_file(time.h HAVE_TIME_H)
+
+check_include_file(signal.h HAVE_SIGNAL_H)
+check_include_file(sys/poll.h HAVE_SYS_POLL_H)
+check_include_file(poll.h HAVE_POLL_H)
+check_include_file(resource.h HAVE_RESOURCE_H)
+check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+check_include_file(sys/stat.h HAVE_SYS_STAT_H)
+
+check_include_file(netinet/in.h HAVE_NETINET_IN_H)
+check_include_file(arpa/inet.h HAVE_ARPA_INET_H)
+check_include_file(netdb.h HAVE_NETDB_H)
+check_include_file(sys/socket.h HAVE_SYS_SOCKET_H)
+check_include_file(sys/time.h HAVE_SYS_TIME_H)
+check_include_file(sys/select.h HAVE_SYS_SELECT_H)
+check_include_file(endian.h HAVE_ENDIAN_H)
+check_include_file(sys/wait.h HAVE_SYS_WAIT_H)
+
+check_include_file(windows.h HAVE_WINDOWS_H)
+check_include_file(winsock.h HAVE_WINSOCK_H)
+check_include_file(winsock2.h HAVE_WINSOCK2_H)
+check_include_file(ws2tcpip.h HAVE_WS2TCPIP_H)
+
+# Check for include declarations
+check_symbol_exists(inet_pton arpa/inet.h HAVE_DECL_INET_PTON)
+check_symbol_exists(inet_ntop arpa/inet.h HAVE_DECL_INET_NTOP)
+check_symbol_exists(strlcpy string.h HAVE_DECL_STRLCPY)
+check_symbol_exists(sigemptyset signal.h HAVE_DECL_SIGEMPTYSET)
+check_symbol_exists(sigfillset signal.h HAVE_DECL_SIGFILLSET)
+check_symbol_exists(sigaddset signal.h HAVE_DECL_SIGADDSET)
+
+# Check for functions
+check_function_exists(inet_pton HAVE_INET_PTON)
+check_function_exists(inet_ntop HAVE_INET_NTOP)
+check_function_exists(strlcpy HAVE_STRLCPY)
+check_function_exists(sigemptyset HAVE_SIGEMPTYSET)
+check_function_exists(sigfillset HAVE_SIGFILLSET)
+check_function_exists(sigaddset HAVE_SIGADDSET)
+
+# Check for types
+check_type_size(sigset_t SIGSET_T)
+check_type_size(_sigset_t _SIGSET_T)
+
+# SSL library
+find_package(OpenSSL "0.9.7" REQUIRED)
+
+set(HAVE_SSL 1)
+
+check_include_file(openssl/ssl.h HAVE_OPENSSL_SSL_H)
+check_include_file(openssl/evp.h HAVE_OPENSSL_EVP_H)
+check_include_file(openssl/err.h HAVE_OPENSSL_ERR_H)
+check_include_file(openssl/rand.h HAVE_OPENSSL_RAND_H)
+check_include_file(openssl/conf.h HAVE_OPENSSL_CONF_H)
+check_include_file(openssl/engine.h HAVE_OPENSSL_ENGINE_H)
+
+# Threading library
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+
+if (CMAKE_USE_PTHREADS_INIT)
+  set(HAVE_PTHREAD 1)
+elseif (CMAKE_USE_WIN32_THREADS_INIT)
+  set(HAVE_WINDOWS_THREADS 1)
+else()
+  message(WARNING "Neither pthreads nor Windows threading available.")
+endif()
+
+# Main library
+
+add_library(getdns
+  src/const-info.c
+  src/convert.c
+  src/dict.c
+  src/dnssec.c
+  src/general.c
+  src/list.c
+  src/request-internal.c
+  src/mdns.c
+  src/platform.c
+  src/pubkey-pinning.c
+  src/rr-dict.c
+  src/rr-iter.c
+  src/server.c
+  src/stub.c
+  src/sync.c
+  src/ub_loop.c
+  src/util-internal.c
+
+  src/gldns/keyraw.c
+  src/gldns/gbuffer.c
+  src/gldns/wire2str.c
+  src/gldns/parse.c
+  src/gldns/parseutil.c
+  src/gldns/rrdef.c
+  src/gldns/str2wire.c
+
+  src/util/rbtree.c
+  src/util/val_secalgo.c
+  src/util/lruhash.c
+  src/util/lookup3.c
+  src/util/locks.c
+
+  src/jsmn/jsmn.c
+
+  src/yxml/yxml.c
+  )
+
+target_include_directories(getdns
+  PRIVATE src
+  PRIVATE src/util/auxiliary
+  PRIVATE src/yxml
+  PRIVATE stubby/src    # Wrong, wrong, wrong.
+
+  PRIVATE ${OPENSSL_INCLUDE_DIR}
+  PRIVATE Threads::Threads
+  )
+
+target_link_libraries(getdns
+  PRIVATE ${OPENSSL_LIBRARIES}
+  PUBLIC Threads::Threads
+  )
+
+set_property(TARGET getdns PROPERTY C_STANDARD 11)
+
+configure_file(${CMAKE_SOURCE_DIR}/cmake/include/cmakeconfig.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+configure_file(${CMAKE_SOURCE_DIR}/src/getdns/getdns.h.in ${CMAKE_CURRENT_BINARY_DIR}/getdns/getdns.h)
+configure_file(${CMAKE_SOURCE_DIR}/src/getdns/getdns_extra.h.in ${CMAKE_CURRENT_BINARY_DIR}/getdns/getdns_extra.h)
--- a/cmake/include/cmakeconfig.h.in
+++ b/cmake/include/cmakeconfig.h.in
@ -0,0 +1,375 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#cmakedefine PACKAGE            "@PACKAGE@"
+#cmakedefine PACKAGE_NAME       "@PACKAGE_NAME@"
+#cmakedefine PACKAGE_VERSION    "@PACKAGE_VERSION@"
+#cmakedefine PACKAGE_BUGREPORT  "@PACKAGE_BUGREPORT@"
+
+#cmakedefine PACKAGE_STRING     "@PACKAGE_STRING@"
+#cmakedefine PACKAGE_TARNAME    "@PACKAGE_TARNAME@"
+
+#cmakedefine HAVE_ASSERT_H      1
+#cmakedefine HAVE_INTTYPES_H    1
+#cmakedefine HAVE_LIMITS_H      1
+#cmakedefine HAVE_SYS_LIMITS_H  1
+#cmakedefine HAVE_STDARG_H      1
+#cmakedefine HAVE_STDINT_H      1
+#cmakedefine HAVE_STDIO_H       1
+#cmakedefine HAVE_STDLIB_H      1
+#cmakedefine HAVE_STRING_H      1
+#cmakedefine HAVE_TIME_H        1
+
+#cmakedefine HAVE_SIGNAL_H      1
+#cmakedefine HAVE_SYS_POLL_H    1
+#cmakedefine HAVE_POLL_H        1
+#cmakedefine HAVE_RESOURCE_H    1
+#cmakedefine HAVE_SYS_TYPES_H   1
+#cmakedefine HAVE_SYS_STAT_H    1
+
+#cmakedefine HAVE_NETINET_IN_H  1
+#cmakedefine HAVE_ARPA_INET_H   1
+#cmakedefine HAVE_NETDB_H       1
+#cmakedefine HAVE_SYS_SOCKET_H  1
+#cmakedefine HAVE_SYS_TIME_H    1
+#cmakedefine HAVE_SYS_SELECT_H  1
+#cmakedefine HAVE_ENDIAN_H      1
+#cmakedefine HAVE_SYS_WAIT_H    1
+
+#cmakedefine HAVE_WINDOWS_H     1
+#cmakedefine HAVE_WINSOCK_H     1
+#cmakedefine HAVE_WINSOCK2_H    1
+#cmakedefine HAVE_WS2TCPIP_H    1
+
+#cmakedefine HAVE_SSL           1
+
+#cmakedefine HAVE_OPENSSL_SSL_H         1
+#cmakedefine HAVE_OPENSSL_EVP_H         1
+#cmakedefine HAVE_OPENSSL_ERR_H         1
+#cmakedefine HAVE_OPENSSL_RAND_H        1
+#cmakedefine HAVE_OPENSSL_CONF_H        1
+#cmakedefine HAVE_OPENSSL_ENGINE_H      1
+
+#cmakedefine HAVE_PTHREAD               1
+#cmakedefine HAVE_WINDOWS_THREADS       1
+
+#cmakedefine RUNSTATEDIR        "@RUNSTATEDIR@"
+#cmakedefine TRUST_ANCHOR_FILE  "@TRUST_ANCHOR_FILE@"
+
+#cmakedefine DNSSEC_ROADBLOCK_AVOIDANCE         1
+#cmakedefine MAXIMUM_UPSTREAM_OPTION_SPACE      @MAXIMUM_UPSTREAM_OPTION_SPACE@
+#cmakedefine EDNS_PADDING_OPCODE                @EDNS_PADDING_OPCODE@
+#cmakedefine MAX_CNAME_REFERRALS                @MAX_CNAME_REFERRALS@
+#cmakedefine DRAFT_RRTYPES                      @DRAFT_RRTYPES@
+#cmakedefine EDNS_COOKIE_OPCODE                 @EDNS_COOKIE_OPCODE@
+#cmakedefine EDNS_COOKIE_ROLLOVER_TIME          @EDNS_COOKIE_ROLLOVER_TIME@
+
+#cmakedefine HAVE_DECL_INET_PTON        1
+#cmakedefine HAVE_DECL_INET_NTOP        1
+#cmakedefine HAVE_DECL_STRLCPY          1
+#cmakedefine HAVE_DECL_SIGEMPTYSET      1
+#cmakedefine HAVE_DECL_SIGFILLSET       1
+#cmakedefine HAVE_DECL_SIGADDSET        1
+
+#cmakedefine HAVE_INET_PTON             1
+#cmakedefine HAVE_INET_NTOP             1
+#cmakedefine HAVE_STRLCPY               1
+#cmakedefine HAVE_SIGEMPTYSET           1
+#cmakedefine HAVE_SIGFILLSET            1
+#cmakedefine HAVE_SIGADDSET             1
+
+#cmakedefine HAVE_SIGSET_T              1
+#cmakedefine HAVE__SIGSET_T             1
+
+#ifdef HAVE___FUNC__
+#define __FUNC__ __func__
+#else
+#define __FUNC__ __FUNCTION__
+#endif
+
+#ifdef GETDNS_ON_WINDOWS
+ /* On windows it is allowed to increase the FD_SETSIZE
+  * (and nescessary to make our custom eventloop work)
+  * See: https://support.microsoft.com/en-us/kb/111855
+  */
+# ifndef FD_SETSIZE
+#  define FD_SETSIZE 1024
+# endif
+
+/* the version of the windows API enabled */
+# ifndef WINVER
+#  define WINVER 0x0600 // 0x0502
+# endif
+# ifndef _WIN32_WINNT
+#  define _WIN32_WINNT 0x0600 // 0x0502
+# endif
+# ifdef HAVE_WS2TCPIP_H
+#  include <ws2tcpip.h>
+# endif
+
+# ifdef _MSC_VER
+#  if _MSC_VER >= 1800
+#   define PRIsz "zu"
+#  else
+#   define PRIsz "Iu"
+#  endif
+# else
+#  define PRIsz "Iu"
+# endif
+
+# ifdef HAVE_WINSOCK2_H
+#  include <winsock2.h>
+# endif
+
+/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */
+# ifdef HAVE_WINSOCK2_H
+#  define FD_SET_T (u_int)
+# else
+#  define FD_SET_T
+# endif
+
+ /* Windows wants us to use _strdup instead of strdup */
+# ifndef strdup
+#  define strdup _strdup
+# endif
+#else
+# define PRIsz "zu"
+#endif
+
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <assert.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+
+#if !defined(HAVE_STRLCPY) || !HAVE_DECL_STRLCPY || !defined(strlcpy)
+size_t strlcpy(char *dst, const char *src, size_t siz);
+#else
+#ifndef __BSD_VISIBLE
+#define __BSD_VISIBLE 1
+#endif
+#endif
+#if !defined(HAVE_ARC4RANDOM) || !HAVE_DECL_ARC4RANDOM
+uint32_t arc4random(void);
+#endif
+#if !defined(HAVE_ARC4RANDOM_UNIFORM) || !HAVE_DECL_ARC4RANDOM_UNIFORM
+uint32_t arc4random_uniform(uint32_t upper_bound);
+#endif
+#ifndef HAVE_ARC4RANDOM
+void explicit_bzero(void* buf, size_t len);
+int getentropy(void* buf, size_t len);
+void arc4random_buf(void* buf, size_t n);
+void _ARC4_LOCK(void);
+void _ARC4_UNLOCK(void);
+#endif
+#ifdef COMPAT_SHA512
+#ifndef SHA512_DIGEST_LENGTH
+#define SHA512_BLOCK_LENGTH             128
+#define SHA512_DIGEST_LENGTH            64
+#define SHA512_DIGEST_STRING_LENGTH     (SHA512_DIGEST_LENGTH * 2 + 1)
+typedef struct _SHA512_CTX {
+        uint64_t        state[8];
+        uint64_t        bitcount[2];
+        uint8_t buffer[SHA512_BLOCK_LENGTH];
+} SHA512_CTX;
+#endif /* SHA512_DIGEST_LENGTH */
+void SHA512_Init(SHA512_CTX*);
+void SHA512_Update(SHA512_CTX*, void*, size_t);
+void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
+unsigned char *SHA512(void* data, unsigned int data_len, unsigned char *digest);
+#endif /* COMPAT_SHA512 */
+
+#ifndef HAVE_DECL_INET_PTON
+int inet_pton(int af, const char* src, void* dst);
+#endif /* HAVE_INET_PTON */
+
+#ifndef HAVE_DECL_INET_NTOP
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif
+
+#ifdef USE_WINSOCK
+# ifndef  _CUSTOM_VSNPRINTF
+#  define _CUSTOM_VSNPRINTF
+static inline int _gldns_custom_vsnprintf(char *str, size_t size, const char *format, va_list ap)
+{ int r = vsnprintf(str, size, format, ap); return r == -1 ? _vscprintf(format, ap) : r; }
+#  define vsnprintf _gldns_custom_vsnprintf
+# endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/** Use on-board gldns */
+#define USE_GLDNS 1
+#ifdef HAVE_SSL
+#  define GLDNS_BUILD_CONFIG_HAVE_SSL 1
+#endif
+
+#ifdef HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+
+#include <errno.h>
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+#endif
+
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+#ifdef HAVE_SYS_LIMITS_H
+#include <sys/limits.h>
+#endif
+
+#ifdef HAVE_OPENSSL_SSL_H
+#include <openssl/ssl.h>
+#endif
+
+#ifdef HAVE_OPENSSL_EVP_H
+#include <openssl/evp.h>
+#endif
+
+#ifdef HAVE_OPENSSL_ERR_H
+#include <openssl/err.h>
+#endif
+
+#ifdef HAVE_OPENSSL_RAND_H
+#include <openssl/rand.h>
+#endif
+
+#ifdef HAVE_OPENSSL_CONF_H
+#include <openssl/conf.h>
+#endif
+
+#ifdef HAVE_OPENSSL_ENGINE_H
+#include <openssl/engine.h>
+#endif
+
+#ifdef PATH_MAX
+#define _GETDNS_PATH_MAX PATH_MAX
+#else
+#define _GETDNS_PATH_MAX 2048
+#endif
+
+#ifndef PRIu64
+#define PRIu64 "llu"
+#endif
+
+#ifdef HAVE_ATTR_FORMAT
+#  define ATTR_FORMAT(archetype, string_index, first_to_check) \
+    __attribute__ ((format (archetype, string_index, first_to_check)))
+#else /* !HAVE_ATTR_FORMAT */
+#  define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
+#endif /* !HAVE_ATTR_FORMAT */
+
+#if defined(DOXYGEN)
+#  define ATTR_UNUSED(x)  x
+#elif defined(__cplusplus)
+#  define ATTR_UNUSED(x)
+#elif defined(HAVE_ATTR_UNUSED)
+#  define ATTR_UNUSED(x)  x __attribute__((unused))
+#else /* !HAVE_ATTR_UNUSED */
+#  define ATTR_UNUSED(x)  x
+#endif /* !HAVE_ATTR_UNUSED */
+
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(HAVE_STRPTIME) || !defined(STRPTIME_WORKS)
+#define strptime unbound_strptime
+struct tm;
+char *strptime(const char *s, const char *format, struct tm *tm);
+#endif
+
+#if !defined(HAVE_SIGSET_T) && defined(HAVE__SIGSET_T)
+typedef _sigset_t sigset_t;
+#endif
+#if !defined(HAVE_SIGEMPTYSET)
+#  define sigemptyset(pset)    (*(pset) = 0)
+#endif
+#if !defined(HAVE_SIGFILLSET)
+#  define sigfillset(pset)     (*(pset) = (sigset_t)-1)
+#endif
+#if !defined(HAVE_SIGADDSET)
+#  define sigaddset(pset, num) (*(pset) |= (1L<<(num)))
+#endif
+
+#ifdef HAVE_LIBUNBOUND
+# include <unbound.h>
+# ifdef HAVE_UNBOUND_EVENT_H
+#  include <unbound-event.h>
+# else
+#  ifdef HAVE_UNBOUND_EVENT_API
+#   ifndef _UB_EVENT_PRIMITIVES
+#    define _UB_EVENT_PRIMITIVES
+struct ub_event_base;
+struct ub_ctx* ub_ctx_create_ub_event(struct ub_event_base* base);
+typedef void (*ub_event_callback_t)(void*, int, void*, int, int, char*);
+int ub_resolve_event(struct ub_ctx* ctx, const char* name, int rrtype,
+        int rrclass, void* mydata, ub_event_callback_t callback, int* async_id);
+#   endif
+#  endif
+# endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIG_H */
--- a/cmake/tests/test_format_attr.c
+++ b/cmake/tests/test_format_attr.c
@ -0,0 +1,13 @@
+#include <stdio.h>
+
+void f(char *format, ...) __attribute__ ((format (printf, 1, 2)));
+
+void f(char *format, ...)
+{
+}
+
+int main (int ac, char *av[])
+{
+    f("%s", "str");
+    return 0;
+}
--- a/cmake/tests/test_unused_attr.c
+++ b/cmake/tests/test_unused_attr.c
@ -0,0 +1,13 @@
+#include <stdio.h>
+
+void f (char *u __attribute__((unused)));
+
+void f(char *u)
+{
+}
+
+int main (int ac, char *av[])
+{
+    f("str");
+    return 0;
+}