swrap: call libc_write() directly for internal fds
[socket_wrapper.git] / ConfigureChecks.cmake
index dd3fdb854cfc3d91782b8b1bc9546008e5fc0b2b..bfb8c177fd66f84340c28821f96ceb0f897c30bc 100644 (file)
@@ -7,12 +7,8 @@ include(CheckStructHasMember)
 include(CheckPrototypeDefinition)
 include(TestBigEndian)
 
-set(PACKAGE ${APPLICATION_NAME})
-set(VERSION ${APPLICATION_VERSION})
-set(DATADIR ${DATA_INSTALL_DIR})
-set(LIBDIR ${LIB_INSTALL_DIR})
-set(PLUGINDIR "${PLUGIN_INSTALL_DIR}-${LIBRARY_SOVERSION}")
-set(SYSCONFDIR ${SYSCONF_INSTALL_DIR})
+set(SOCKET_WRAPPER_PACKAGE ${PROJECT_NAME})
+set(SOCKET_WRAPPER_VERSION ${PROJECT_VERSION})
 
 set(BINARYDIR ${CMAKE_BINARY_DIR})
 set(SOURCEDIR ${CMAKE_SOURCE_DIR})
@@ -42,47 +38,80 @@ if(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
 "void __attribute__((visibility(\"default\"))) test() {}
 int main(void){ return 0; }
 " WITH_VISIBILITY_HIDDEN)
-        set(CMAKE_REQUIRED_FLAGS "")
+        unset(CMAKE_REQUIRED_FLAGS)
     endif (NOT GNUCC_VERSION EQUAL 34)
 endif(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
 
 # HEADERS
+check_include_file(netinet/tcp_fsm.h HAVE_NETINET_TCP_FSM_H)
 check_include_file(sys/filio.h HAVE_SYS_FILIO_H)
+check_include_file(sys/signalfd.h HAVE_SYS_SIGNALFD_H)
+check_include_file(sys/eventfd.h HAVE_SYS_EVENTFD_H)
+check_include_file(sys/timerfd.h HAVE_SYS_TIMERFD_H)
+check_include_file(gnu/lib-names.h HAVE_GNU_LIB_NAMES_H)
+check_include_file(rpc/rpc.h HAVE_RPC_RPC_H)
+
+# SYMBOLS
+set(CMAKE_REQUIRED_FLAGS -D_GNU_SOURCE)
+check_symbol_exists(program_invocation_short_name
+                    "errno.h"
+                    HAVE_PROGRAM_INVOCATION_SHORT_NAME)
+unset(CMAKE_REQUIRED_FLAGS)
 
 # FUNCTIONS
 check_function_exists(strncpy HAVE_STRNCPY)
 check_function_exists(vsnprintf HAVE_VSNPRINTF)
 check_function_exists(snprintf HAVE_SNPRINTF)
-
-if (WIN32)
-    check_function_exists(_vsnprintf_s HAVE__VSNPRINTF_S)
-    check_function_exists(_vsnprintf HAVE__VSNPRINTF)
-    check_function_exists(_snprintf HAVE__SNPRINTF)
-    check_function_exists(_snprintf_s HAVE__SNPRINTF_S)
-endif (WIN32)
+check_function_exists(signalfd HAVE_SIGNALFD)
+check_function_exists(eventfd HAVE_EVENTFD)
+check_function_exists(timerfd_create HAVE_TIMERFD_CREATE)
+check_function_exists(bindresvport HAVE_BINDRESVPORT)
+check_function_exists(accept4 HAVE_ACCEPT4)
+check_function_exists(open64 HAVE_OPEN64)
+check_function_exists(fopen64 HAVE_FOPEN64)
+check_function_exists(getprogname HAVE_GETPROGNAME)
+check_function_exists(getexecname HAVE_GETEXECNAME)
+check_function_exists(pledge HAVE_PLEDGE)
+check_function_exists(_socket HAVE__SOCKET)
+check_function_exists(_close HAVE__CLOSE)
 
 if (UNIX)
+    find_library(DLFCN_LIBRARY dl)
+    if (DLFCN_LIBRARY)
+        list(APPEND _REQUIRED_LIBRARIES ${DLFCN_LIBRARY})
+    else()
+        check_function_exists(dlopen HAVE_DLOPEN)
+        if (NOT HAVE_DLOPEN)
+            message(FATAL_ERROR "FATAL: No dlopen() function detected")
+        endif()
+    endif()
+
     if (NOT LINUX)
         # libsocket (Solaris)
         check_library_exists(socket getaddrinfo "" HAVE_LIBSOCKET)
         if (HAVE_LIBSOCKET)
-          set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} socket)
+            list(APPEND _REQUIRED_LIBRARIES socket)
         endif (HAVE_LIBSOCKET)
 
         # libnsl/inet_pton (Solaris)
         check_library_exists(nsl inet_pton "" HAVE_LIBNSL)
         if (HAVE_LIBNSL)
-            set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} nsl)
+            list(APPEND _REQUIRED_LIBRARIES nsl)
         endif (HAVE_LIBNSL)
     endif (NOT LINUX)
 
     check_function_exists(getaddrinfo HAVE_GETADDRINFO)
 endif (UNIX)
 
-set(SWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "socket_wrapper required system libraries")
+# STRUCTS
+check_struct_has_member("struct in_pktinfo" ipi_addr "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_IN_PKTINFO)
+set(CMAKE_REQUIRED_FLAGS -D_GNU_SOURCE)
+check_struct_has_member("struct in6_pktinfo" ipi6_addr "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_IN6_PKTINFO)
+unset(CMAKE_REQUIRED_FLAGS)
 
 # STRUCT MEMBERS
-check_struct_has_member("struct sockaddr" sa_len "sys/socket.h netinet/in.h" HAVE_STRUCT_SOCKADDR_SA_LEN)
+check_struct_has_member("struct sockaddr" sa_len "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_SOCKADDR_SA_LEN)
+check_struct_has_member("struct msghdr" msg_control "sys/types.h;sys/socket.h" HAVE_STRUCT_MSGHDR_MSG_CONTROL)
 
 # PROTOTYPES
 check_prototype_definition(gettimeofday
@@ -109,6 +138,14 @@ check_prototype_definition(ioctl
     "unistd.h;sys/ioctl.h"
     HAVE_IOCTL_INT)
 
+if (HAVE_EVENTFD)
+    check_prototype_definition(eventfd
+        "int eventfd(unsigned int count, int flags)"
+        "-1"
+        "sys/eventfd.h"
+        HAVE_EVENTFD_UNSIGNED_INT)
+endif (HAVE_EVENTFD)
+
 # IPV6
 check_c_source_compiles("
     #include <stdlib.h>
@@ -150,6 +187,23 @@ int main(void) {
     return 0;
 }" HAVE_SOCKADDR_STORAGE)
 
+###########################################################
+# For detecting attributes we need to treat warnings as
+# errors
+set(CMAKE_REQUIRED_FLAGS "-Werror")
+
+check_c_source_compiles("
+void test_constructor_attribute(void) __attribute__ ((constructor));
+
+void test_constructor_attribute(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_CONSTRUCTOR_ATTRIBUTE)
+
 check_c_source_compiles("
 void test_destructor_attribute(void) __attribute__ ((destructor));
 
@@ -162,6 +216,50 @@ int main(void) {
     return 0;
 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 
+check_c_source_compiles("
+#pragma init (test_constructor)
+void test_constructor(void);
+
+void test_constructor(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_PRAGMA_INIT)
+
+check_c_source_compiles("
+#pragma fini (test_destructor)
+void test_destructor(void);
+
+void test_destructor(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_PRAGMA_FINI)
+
+check_c_source_compiles("
+#define FALL_THROUGH __attribute__((fallthrough))
+
+int main(void) {
+    int i = 2;
+
+    switch (i) {
+    case 0:
+        FALL_THROUGH;
+    case 1:
+        break;
+    default:
+        break;
+    }
+
+    return 0;
+}" HAVE_FALLTHROUGH_ATTRIBUTE)
+
 check_c_source_compiles("
 __thread int tls;
 
@@ -169,11 +267,28 @@ int main(void) {
     return 0;
 }" HAVE_GCC_THREAD_LOCAL_STORAGE)
 
-check_library_exists(dl dlopen "" HAVE_LIBDL)
-if (HAVE_LIBDL)
-    find_library(DLFCN_LIBRARY dl)
-    set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${DLFCN_LIBRARY})
-endif (HAVE_LIBDL)
+check_c_source_compiles("
+void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
+
+int main(void) {
+    return 0;
+}" HAVE_FUNCTION_ATTRIBUTE_FORMAT)
+
+check_c_source_compiles("
+void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
+
+void test_address_sanitizer_attribute(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_ADDRESS_SANITIZER_ATTRIBUTE)
+
+# Stop treating wanrings as errors
+unset(CMAKE_REQUIRED_FLAGS)
+###########################################################
 
 if (OSX)
     set(HAVE_APPLE 1)
@@ -184,4 +299,6 @@ if (NOT WIN32)
     test_big_endian(WORDS_BIGENDIAN)
 endif (NOT WIN32)
 
-set(SWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "swrap required system libraries")
+check_type_size(pid_t SIZEOF_PID_T)
+
+set(SWRAP_REQUIRED_LIBRARIES ${_REQUIRED_LIBRARIES} CACHE INTERNAL "socket_wrapper required system libraries")