mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
18dd8154e2
work. This is supposed to detect cross-compiling and alert the user, and not do the POSIX-check for strerror_r() if it already detected a glibc-compatible strerror_r().
766 lines
22 KiB
Plaintext
766 lines
22 KiB
Plaintext
dnl Check for how to set a socket to non-blocking state. There seems to exist
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dnl four known different ways, with the one used almost everywhere being POSIX
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dnl and XPG3, while the other different ways for different systems (old BSD,
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dnl Windows and Amiga).
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dnl
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dnl There are two known platforms (AIX 3.x and SunOS 4.1.x) where the
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dnl O_NONBLOCK define is found but does not work. This condition is attempted
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dnl to get caught in this script by using an excessive number of #ifdefs...
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dnl
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AC_DEFUN([CURL_CHECK_NONBLOCKING_SOCKET],
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[
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AC_MSG_CHECKING([non-blocking sockets style])
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AC_TRY_COMPILE([
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/* headers for O_NONBLOCK test */
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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],[
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/* try to compile O_NONBLOCK */
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#if defined(sun) || defined(__sun__) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
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# if defined(__SVR4) || defined(__srv4__)
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# define PLATFORM_SOLARIS
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# else
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# define PLATFORM_SUNOS4
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# endif
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#endif
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#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX4)
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# define PLATFORM_AIX_V3
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#endif
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#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3) || defined(__BEOS__)
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#error "O_NONBLOCK does not work on this platform"
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#endif
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int socket;
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int flags = fcntl(socket, F_SETFL, flags | O_NONBLOCK);
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],[
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dnl the O_NONBLOCK test was fine
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nonblock="O_NONBLOCK"
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AC_DEFINE(HAVE_O_NONBLOCK, 1, [use O_NONBLOCK for non-blocking sockets])
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],[
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dnl the code was bad, try a different program now, test 2
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AC_TRY_COMPILE([
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/* headers for FIONBIO test */
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#include <unistd.h>
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#include <stropts.h>
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],[
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/* FIONBIO source test (old-style unix) */
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int socket;
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int flags = ioctl(socket, FIONBIO, &flags);
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],[
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dnl FIONBIO test was good
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nonblock="FIONBIO"
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AC_DEFINE(HAVE_FIONBIO, 1, [use FIONBIO for non-blocking sockets])
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],[
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dnl FIONBIO test was also bad
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dnl the code was bad, try a different program now, test 3
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AC_TRY_COMPILE([
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/* headers for ioctlsocket test (cygwin?) */
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#include <windows.h>
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],[
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/* ioctlsocket source code */
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int socket;
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unsigned long flags = ioctlsocket(socket, FIONBIO, &flags);
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],[
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dnl ioctlsocket test was good
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nonblock="ioctlsocket"
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AC_DEFINE(HAVE_IOCTLSOCKET, 1, [use ioctlsocket() for non-blocking sockets])
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],[
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dnl ioctlsocket didnt compile!, go to test 4
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AC_TRY_LINK([
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/* headers for IoctlSocket test (Amiga?) */
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#include <sys/ioctl.h>
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],[
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/* IoctlSocket source code */
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int socket;
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int flags = IoctlSocket(socket, FIONBIO, (long)1);
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],[
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dnl ioctlsocket test was good
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nonblock="IoctlSocket"
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AC_DEFINE(HAVE_IOCTLSOCKET_CASE, 1, [use Ioctlsocket() for non-blocking sockets])
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],[
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dnl Ioctlsocket didnt compile, do test 5!
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AC_TRY_COMPILE([
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/* headers for SO_NONBLOCK test (BeOS) */
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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],[
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/* SO_NONBLOCK source code */
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long b = 1;
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int socket;
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int flags = setsockopt(socket, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
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],[
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dnl the SO_NONBLOCK test was good
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nonblock="SO_NONBLOCK"
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AC_DEFINE(HAVE_SO_NONBLOCK, 1, [use SO_NONBLOCK for non-blocking sockets])
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],[
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dnl test 5 didnt compile!
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nonblock="nada"
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AC_DEFINE(HAVE_DISABLED_NONBLOCKING, 1, [disabled non-blocking sockets])
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])
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dnl end of fifth test
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])
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dnl end of forth test
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])
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dnl end of third test
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])
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dnl end of second test
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])
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dnl end of non-blocking try-compile test
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AC_MSG_RESULT($nonblock)
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if test "$nonblock" = "nada"; then
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AC_MSG_WARN([non-block sockets disabled])
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fi
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])
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dnl Check for socklen_t: historically on BSD it is an int, and in
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dnl POSIX 1g it is a type of its own, but some platforms use different
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dnl types for the argument to getsockopt, getpeername, etc. So we
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dnl have to test to find something that will work.
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AC_DEFUN([TYPE_SOCKLEN_T],
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[
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AC_CHECK_TYPE([socklen_t], ,[
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AC_MSG_CHECKING([for socklen_t equivalent])
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AC_CACHE_VAL([curl_cv_socklen_t_equiv],
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[
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# Systems have either "struct sockaddr *" or
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# "void *" as the second argument to getpeername
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curl_cv_socklen_t_equiv=
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for arg2 in "struct sockaddr" void; do
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for t in int size_t unsigned long "unsigned long"; do
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AC_TRY_COMPILE([
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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int getpeername (int, $arg2 *, $t *);
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],[
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$t len;
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getpeername(0,0,&len);
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],[
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curl_cv_socklen_t_equiv="$t"
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break
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])
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done
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done
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if test "x$curl_cv_socklen_t_equiv" = x; then
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AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
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fi
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])
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AC_MSG_RESULT($curl_cv_socklen_t_equiv)
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AC_DEFINE_UNQUOTED(socklen_t, $curl_cv_socklen_t_equiv,
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[type to use in place of socklen_t if not defined])],
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[#include <sys/types.h>
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#include <sys/socket.h>])
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])
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dnl Check for in_addr_t: it is used to receive the return code of inet_addr()
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dnl and a few other things. If not found, we set it to unsigned int, as even
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dnl 64-bit implementations use to set it to a 32-bit type.
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AC_DEFUN([TYPE_IN_ADDR_T],
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[
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AC_CHECK_TYPE([in_addr_t], ,[
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AC_MSG_CHECKING([for in_addr_t equivalent])
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AC_CACHE_VAL([curl_cv_in_addr_t_equiv],
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[
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curl_cv_in_addr_t_equiv=
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for t in "unsigned long" int size_t unsigned long; do
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AC_TRY_COMPILE([
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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],[
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$t data = inet_addr ("1.2.3.4");
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],[
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curl_cv_in_addr_t_equiv="$t"
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break
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])
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done
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if test "x$curl_cv_in_addr_t_equiv" = x; then
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AC_MSG_ERROR([Cannot find a type to use in place of in_addr_t])
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fi
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])
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AC_MSG_RESULT($curl_cv_in_addr_t_equiv)
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AC_DEFINE_UNQUOTED(in_addr_t, $curl_cv_in_addr_t_equiv,
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[type to use in place of in_addr_t if not defined])],
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[#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>])
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])
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dnl ************************************************************
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dnl check for "localhost", if it doesn't exist, we can't do the
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dnl gethostbyname_r tests!
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dnl
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AC_DEFUN([CURL_CHECK_WORKING_RESOLVER],[
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AC_MSG_CHECKING([if "localhost" resolves])
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AC_TRY_RUN([
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#include <string.h>
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#include <sys/types.h>
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#include <netdb.h>
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int
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main () {
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struct hostent *h;
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h = gethostbyname("localhost");
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exit (h == NULL ? 1 : 0); }],[
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AC_MSG_RESULT(yes)],[
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([can't figure out gethostbyname_r() since localhost doesn't resolve])
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]
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)
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])
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dnl ************************************************************
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dnl check for working getaddrinfo()
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dnl
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AC_DEFUN([CURL_CHECK_WORKING_GETADDRINFO],[
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AC_CACHE_CHECK(for working getaddrinfo, ac_cv_working_getaddrinfo,[
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AC_TRY_RUN( [
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#include <netdb.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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int main(void)
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{
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struct addrinfo hints, *ai;
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int error;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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error = getaddrinfo("127.0.0.1", "8080", &hints, &ai);
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if (error) {
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return 1;
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}
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return 0;
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}
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],[
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ac_cv_working_getaddrinfo="yes"
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],[
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ac_cv_working_getaddrinfo="no"
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],[
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ac_cv_working_getaddrinfo="yes"
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])])
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if test "$ac_cv_working_getaddrinfo" = "yes"; then
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AC_DEFINE(HAVE_GETADDRINFO, 1, [Define if getaddrinfo exists and works])
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AC_DEFINE(ENABLE_IPV6, 1, [Define if you want to enable IPv6 support])
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IPV6_ENABLED=1
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AC_SUBST(IPV6_ENABLED)
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fi
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])
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dnl ************************************************************
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dnl check for working NI_WITHSCOPEID in getnameinfo()
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dnl
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AC_DEFUN([CURL_CHECK_NI_WITHSCOPEID],[
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AC_CACHE_CHECK(for working NI_WITHSCOPEID, ac_cv_working_ni_withscopeid,[
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AC_RUN_IFELSE([[
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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int main()
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{
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#ifdef NI_WITHSCOPEID
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struct sockaddr_storage ss;
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int sslen = sizeof(ss);
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int rc;
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char hbuf[NI_MAXHOST];
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int fd = socket(AF_INET6, SOCK_STREAM, 0);
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if(fd < 0) {
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perror("socket()");
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return 1; /* couldn't create socket of either kind */
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}
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rc = getsockname(fd, (struct sockaddr *)&ss, &sslen);
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if(rc) {
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perror("getsockname()");
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return 2;
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}
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rc = getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf),
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NULL, 0,
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NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID);
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if(rc) {
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printf("rc = %s\n", gai_strerror(rc));
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return 3;
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}
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return 0; /* everything works fine, use NI_WITHSCOPEID! */
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#else
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return 4; /* we don't seem to have the definition, don't use it */
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#endif
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}
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]],
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dnl program worked:
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[ ac_cv_working_ni_withscopeid="yes" ],
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dnl program failed:
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[ ac_cv_working_ni_withscopeid="no" ],
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dnl we cross-compile:
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[ ac_cv_working_ni_withscopeid="yes" ]
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) dnl end of AC_RUN_IFELSE
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]) dnl end of AC_CACHE_CHECK
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if test "$ac_cv_working_ni_withscopeid" = "yes"; then
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AC_DEFINE(HAVE_NI_WITHSCOPEID, 1,
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[Define if NI_WITHSCOPEID exists and works])
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fi
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]) dnl end of AC_DEFUN
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AC_DEFUN([CURL_CHECK_LOCALTIME_R],
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[
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dnl check for localtime_r
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AC_CHECK_FUNCS(localtime_r,[
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AC_MSG_CHECKING(whether localtime_r is declared)
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AC_EGREP_CPP(localtime_r,[
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#include <time.h>],[
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AC_MSG_RESULT(yes)],[
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(whether localtime_r with -D_REENTRANT is declared)
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AC_EGREP_CPP(localtime_r,[
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#define _REENTRANT
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#include <time.h>],[
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AC_DEFINE(NEED_REENTRANT)
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AC_MSG_RESULT(yes)],
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AC_MSG_RESULT(no))])])
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])
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dnl
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dnl This function checks for strerror_r(). If it isn't found at first, it
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dnl retries with _THREAD_SAFE defined, as that is what AIX seems to require
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dnl in order to find this function.
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dnl
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dnl If the function is found, it will then proceed to check how the function
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dnl actually works: glibc-style or POSIX-style.
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dnl
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dnl glibc:
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dnl char *strerror_r(int errnum, char *buf, size_t n);
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dnl
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dnl What this one does is to return the error string (no surprises there),
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dnl but it doesn't usually copy anything into buf! The 'buf' and 'n'
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dnl parameters are only meant as an optional working area, in case strerror_r
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dnl needs it. A quick test on a few systems shows that it's generally not
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dnl touched at all.
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dnl
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dnl POSIX:
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dnl int strerror_r(int errnum, char *buf, size_t n);
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dnl
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AC_DEFUN([CURL_CHECK_STRERROR_R],
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[
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dnl determine of strerror_r is present
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AC_CHECK_FUNCS(strerror_r,[
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AC_MSG_CHECKING(whether strerror_r is declared)
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AC_EGREP_CPP(strerror_r,[
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#include <string.h>],[
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strerror_r="yes"
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AC_MSG_RESULT(yes)],[
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(whether strerror_r with -D_THREAD_SAFE is declared)
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AC_EGREP_CPP(strerror_r,[
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#define _THREAD_SAFE
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#include <string.h>],[
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strerror_r="yes"
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CPPFLAGS="-D_THREAD_SAFE $CPPFLAGS"
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AC_MSG_RESULT(yes)],
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AC_MSG_RESULT(no))])])
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if test "x$strerror_r" = "xyes"; then
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dnl check if strerror_r is properly declared in the headers
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AC_CHECK_DECL(strerror_r, ,
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AC_DEFINE(HAVE_NO_STRERROR_R_DECL, 1, [we have no strerror_r() proto])
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,
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[#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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])
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dnl determine if this strerror_r() is glibc or POSIX
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AC_MSG_CHECKING([for a glibc strerror_r API])
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AC_TRY_RUN([
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#include <string.h>
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#include <errno.h>
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int
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main () {
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char buffer[1024]; /* big enough to play with */
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char *string =
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strerror_r(EACCES, buffer, sizeof(buffer));
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/* this should've returned a string */
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if(!string || !string[0])
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return 99;
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return 0;
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}
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],
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GLIBC_STRERROR_R="1"
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AC_DEFINE(HAVE_GLIBC_STRERROR_R, 1, [we have a glibc-style strerror_r()])
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no]),
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dnl cross-compiling!
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AC_MSG_NOTICE([cannot determine strerror_r() style: edit lib/config.h manually!])
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)
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if test -z "$GLIBC_STRERROR_R"; then
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AC_MSG_CHECKING([for a POSIX strerror_r API])
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AC_TRY_RUN([
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#include <string.h>
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#include <errno.h>
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int
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main () {
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char buffer[1024]; /* big enough to play with */
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int error =
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strerror_r(EACCES, buffer, sizeof(buffer));
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/* This should've returned zero, and written an error string in the
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buffer.*/
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if(!buffer[0] || error)
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return 99;
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return 0;
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}
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],
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AC_DEFINE(HAVE_POSIX_STRERROR_R, 1, [we have a POSIX-style strerror_r()])
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AC_MSG_RESULT([yes]),
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|
AC_MSG_RESULT([no]) ,
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dnl cross-compiling!
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AC_MSG_NOTICE([cannot determine strerror_r() style: edit lib/config.h manually!])
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)
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fi dnl if not using glibc API
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fi dnl we have a strerror_r
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])
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|
AC_DEFUN([CURL_CHECK_INET_NTOA_R],
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|
[
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|
dnl determine if function definition for inet_ntoa_r exists.
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|
AC_CHECK_FUNCS(inet_ntoa_r,[
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AC_MSG_CHECKING(whether inet_ntoa_r is declared)
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|
AC_EGREP_CPP(inet_ntoa_r,[
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|
#include <arpa/inet.h>],[
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|
AC_DEFINE(HAVE_INET_NTOA_R_DECL, 1, [inet_ntoa_r() is declared])
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|
AC_MSG_RESULT(yes)],[
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|
AC_MSG_RESULT(no)
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AC_MSG_CHECKING(whether inet_ntoa_r with -D_REENTRANT is declared)
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|
AC_EGREP_CPP(inet_ntoa_r,[
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|
#define _REENTRANT
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|
#include <arpa/inet.h>],[
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AC_DEFINE(HAVE_INET_NTOA_R_DECL, 1, [inet_ntoa_r() is declared])
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|
AC_DEFINE(NEED_REENTRANT, 1, [need REENTRANT defined])
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|
AC_MSG_RESULT(yes)],
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|
AC_MSG_RESULT(no))])])
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|
])
|
|
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|
AC_DEFUN([CURL_CHECK_GETHOSTBYADDR_R],
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|
[
|
|
dnl check for number of arguments to gethostbyaddr_r. it might take
|
|
dnl either 5, 7, or 8 arguments.
|
|
AC_CHECK_FUNCS(gethostbyaddr_r,[
|
|
AC_MSG_CHECKING(if gethostbyaddr_r takes 5 arguments)
|
|
AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#include <netdb.h>],[
|
|
char * address;
|
|
int length;
|
|
int type;
|
|
struct hostent h;
|
|
struct hostent_data hdata;
|
|
int rc;
|
|
rc = gethostbyaddr_r(address, length, type, &h, &hdata);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYADDR_R_5, 1, [gethostbyaddr_r() takes 5 args])
|
|
ac_cv_gethostbyaddr_args=5],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING(if gethostbyaddr_r with -D_REENTRANT takes 5 arguments)
|
|
AC_TRY_COMPILE([
|
|
#define _REENTRANT
|
|
#include <sys/types.h>
|
|
#include <netdb.h>],[
|
|
char * address;
|
|
int length;
|
|
int type;
|
|
struct hostent h;
|
|
struct hostent_data hdata;
|
|
int rc;
|
|
rc = gethostbyaddr_r(address, length, type, &h, &hdata);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYADDR_R_5, 1, [gethostbyaddr_r() takes 5 args])
|
|
AC_DEFINE(NEED_REENTRANT, 1, [need REENTRANT])
|
|
ac_cv_gethostbyaddr_args=5],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING(if gethostbyaddr_r takes 7 arguments)
|
|
AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#include <netdb.h>],[
|
|
char * address;
|
|
int length;
|
|
int type;
|
|
struct hostent h;
|
|
char buffer[8192];
|
|
int h_errnop;
|
|
struct hostent * hp;
|
|
|
|
hp = gethostbyaddr_r(address, length, type, &h,
|
|
buffer, 8192, &h_errnop);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYADDR_R_7, 1, [gethostbyaddr_r() takes 7 args] )
|
|
ac_cv_gethostbyaddr_args=7],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING(if gethostbyaddr_r takes 8 arguments)
|
|
AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#include <netdb.h>],[
|
|
char * address;
|
|
int length;
|
|
int type;
|
|
struct hostent h;
|
|
char buffer[8192];
|
|
int h_errnop;
|
|
struct hostent * hp;
|
|
int rc;
|
|
|
|
rc = gethostbyaddr_r(address, length, type, &h,
|
|
buffer, 8192, &hp, &h_errnop);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYADDR_R_8, 1, [gethostbyaddr_r() takes 8 args])
|
|
ac_cv_gethostbyaddr_args=8],[
|
|
AC_MSG_RESULT(no)
|
|
have_missing_r_funcs="$have_missing_r_funcs gethostbyaddr_r"])])])])])
|
|
])
|
|
|
|
AC_DEFUN([CURL_CHECK_GETHOSTBYNAME_R],
|
|
[
|
|
dnl check for number of arguments to gethostbyname_r. it might take
|
|
dnl either 3, 5, or 6 arguments.
|
|
AC_CHECK_FUNCS(gethostbyname_r,[
|
|
AC_MSG_CHECKING([if gethostbyname_r takes 3 arguments])
|
|
AC_TRY_COMPILE([
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <netdb.h>
|
|
#undef NULL
|
|
#define NULL (void *)0
|
|
|
|
int
|
|
gethostbyname_r(const char *, struct hostent *, struct hostent_data *);],[
|
|
struct hostent_data data;
|
|
gethostbyname_r(NULL, NULL, NULL);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYNAME_R_3, 1, [gethostbyname_r() takes 3 args])
|
|
ac_cv_gethostbyname_args=3],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING([if gethostbyname_r with -D_REENTRANT takes 3 arguments])
|
|
AC_TRY_COMPILE([
|
|
#define _REENTRANT
|
|
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <netdb.h>
|
|
#undef NULL
|
|
#define NULL (void *)0
|
|
|
|
int
|
|
gethostbyname_r(const char *,struct hostent *, struct hostent_data *);],[
|
|
struct hostent_data data;
|
|
gethostbyname_r(NULL, NULL, NULL);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYNAME_R_3, 1, [gethostbyname_r() takes 3 args])
|
|
AC_DEFINE(NEED_REENTRANT, 1, [needs REENTRANT])
|
|
ac_cv_gethostbyname_args=3],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING([if gethostbyname_r takes 5 arguments])
|
|
AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#include <netdb.h>
|
|
#undef NULL
|
|
#define NULL (void *)0
|
|
|
|
struct hostent *
|
|
gethostbyname_r(const char *, struct hostent *, char *, int, int *);],[
|
|
gethostbyname_r(NULL, NULL, NULL, 0, NULL);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYNAME_R_5, 1, [gethostbyname_r() takes 5 args])
|
|
ac_cv_gethostbyname_args=5],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING([if gethostbyname_r takes 6 arguments])
|
|
AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#include <netdb.h>
|
|
#undef NULL
|
|
#define NULL (void *)0
|
|
|
|
int
|
|
gethostbyname_r(const char *, struct hostent *, char *, size_t,
|
|
struct hostent **, int *);],[
|
|
gethostbyname_r(NULL, NULL, NULL, 0, NULL, NULL);],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GETHOSTBYNAME_R_6, 1, [gethostbyname_r() takes 6 args])
|
|
ac_cv_gethostbyname_args=6],[
|
|
AC_MSG_RESULT(no)
|
|
have_missing_r_funcs="$have_missing_r_funcs gethostbyname_r"],
|
|
[ac_cv_gethostbyname_args=0])],
|
|
[ac_cv_gethostbyname_args=0])],
|
|
[ac_cv_gethostbyname_args=0])],
|
|
[ac_cv_gethostbyname_args=0])])
|
|
|
|
if test "$ac_cv_func_gethostbyname_r" = "yes"; then
|
|
if test "$ac_cv_gethostbyname_args" = "0"; then
|
|
dnl there's a gethostbyname_r() function, but we don't know how
|
|
dnl many arguments it wants!
|
|
AC_MSG_ERROR([couldn't figure out how to use gethostbyname_r()])
|
|
fi
|
|
fi
|
|
])
|
|
|
|
dnl We create a function for detecting which compiler we use and then set as
|
|
dnl pendantic compiler options as possible for that particular compiler. The
|
|
dnl options are only used for debug-builds.
|
|
|
|
AC_DEFUN([CURL_CC_DEBUG_OPTS],
|
|
[
|
|
if test "$GCC" = "yes"; then
|
|
|
|
dnl figure out gcc version!
|
|
AC_MSG_CHECKING([gcc version])
|
|
gccver=`$CC -dumpversion`
|
|
num1=`echo $gccver | cut -d . -f1`
|
|
num2=`echo $gccver | cut -d . -f2`
|
|
gccnum=`(expr $num1 "*" 100 + $num2) 2>/dev/null`
|
|
AC_MSG_RESULT($gccver)
|
|
|
|
AC_MSG_CHECKING([if this is icc in disguise])
|
|
AC_EGREP_CPP([^__INTEL_COMPILER], [__INTEL_COMPILER],
|
|
dnl action if the text is found, this it has not been replaced by the
|
|
dnl cpp
|
|
ICC="no"
|
|
AC_MSG_RESULT([no]),
|
|
dnl the text was not found, it was replaced by the cpp
|
|
ICC="yes"
|
|
AC_MSG_RESULT([yes])
|
|
)
|
|
|
|
if test "$ICC" = "yes"; then
|
|
dnl this is icc, not gcc.
|
|
|
|
dnl ICC warnings we ignore:
|
|
dnl * 269 warns on our "%Od" printf formatters for curl_off_t output:
|
|
dnl "invalid format string conversion"
|
|
dnl * 279 warns on static conditions in while expressions
|
|
dnl * 981 warns on "operands are evaluated in unspecified order"
|
|
dnl * 1418 "external definition with no prior declaration"
|
|
dnl * 1419 warns on "external declaration in primary source file"
|
|
dnl which we know and do on purpose.
|
|
|
|
WARN="-wd279,269,981,1418,1419"
|
|
|
|
if test "$gccnum" -gt "600"; then
|
|
dnl icc 6.0 and older doesn't have the -Wall flag
|
|
WARN="-Wall $WARN"
|
|
fi
|
|
else dnl $ICC = yes
|
|
dnl this is a set of options we believe *ALL* gcc versions support:
|
|
WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare"
|
|
|
|
dnl -Wcast-align is a bit too annoying on all gcc versions ;-)
|
|
|
|
if test "$gccnum" -gt "295"; then
|
|
dnl only if the compiler is newer than 2.95 since we got lots of
|
|
dnl "`_POSIX_C_SOURCE' is not defined" in system headers with
|
|
dnl gcc 2.95.4 on FreeBSD 4.9!
|
|
WARN="$WARN -Wundef"
|
|
fi
|
|
|
|
if test "$gccnum" -ge "296"; then
|
|
dnl gcc 2.96 or later
|
|
WARN="$WARN -Wfloat-equal"
|
|
fi
|
|
|
|
if test "$gccnum" -gt "296"; then
|
|
dnl this option does not exist in 2.96
|
|
WARN="$WARN -Wno-format-nonliteral"
|
|
fi
|
|
|
|
dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on
|
|
dnl on i686-Linux as it gives us heaps with false positives
|
|
if test "$gccnum" -ge "303"; then
|
|
dnl gcc 3.3 and later
|
|
WARN="$WARN -Wendif-labels -Wstrict-prototypes"
|
|
fi
|
|
|
|
if test "$gccnum" -ge "304"; then
|
|
# try -Wunreachable-code on gcc 3.4
|
|
WARN="$WARN -Wunreachable-code"
|
|
fi
|
|
|
|
for flag in $CPPFLAGS; do
|
|
case "$flag" in
|
|
-I*)
|
|
dnl Include path, provide a -isystem option for the same dir
|
|
dnl to prevent warnings in those dirs. The -isystem was not very
|
|
dnl reliable on earlier gcc versions.
|
|
add=`echo $flag | sed 's/^-I/-isystem /g'`
|
|
WARN="$WARN $add"
|
|
;;
|
|
esac
|
|
done
|
|
|
|
fi dnl $ICC = no
|
|
|
|
CFLAGS="$CFLAGS $WARN"
|
|
|
|
AC_MSG_NOTICE([Added this set of compiler options: $WARN])
|
|
|
|
else dnl $GCC = yes
|
|
|
|
AC_MSG_NOTICE([Added no extra compiler options])
|
|
|
|
fi dnl $GCC = yes
|
|
|
|
dnl strip off optimizer flags
|
|
NEWFLAGS=""
|
|
for flag in $CFLAGS; do
|
|
case "$flag" in
|
|
-O*)
|
|
dnl echo "cut off $flag"
|
|
;;
|
|
*)
|
|
NEWFLAGS="$NEWFLAGS $flag"
|
|
;;
|
|
esac
|
|
done
|
|
CFLAGS=$NEWFLAGS
|
|
|
|
]) dnl end of AC_DEFUN()
|
|
|