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libssh2-1.2
acinclude.m4
382 строки
11 KB
Daniel Stenberg
Add check for and use of the _REENTRANT define for Solaris so that libssh2
04 июн 2009, 22:23
04 июн 2009, 22:23
d440995
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dnl ********************************************************************** dnl CURL_DETECT_ICC ([ACTION-IF-YES]) dnl dnl check if this is the Intel ICC compiler, and if so run the ACTION-IF-YES dnl sets the $ICC variable to "yes" or "no" dnl ********************************************************************** AC_DEFUN([CURL_DETECT_ICC], [ ICC="no" AC_MSG_CHECKING([for icc in use]) if test "$GCC" = "yes"; then dnl check if this is icc acting as gcc in disguise AC_EGREP_CPP([^__INTEL_COMPILER], [__INTEL_COMPILER], dnl action if the text is found, this it has not been replaced by the dnl cpp ICC="no", dnl the text was not found, it was replaced by the cpp ICC="yes" AC_MSG_RESULT([yes]) [$1] ) fi if test "$ICC" = "no"; then # this is not ICC AC_MSG_RESULT([no]) 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 "z$ICC" = "z"; then CURL_DETECT_ICC fi if test "$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) 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 $ICC = yes dnl this is a set of options we believe *ALL* gcc versions support: WARN="-W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes" dnl -Wcast-align is a bit too annoying on all gcc versions ;-) if test "$gccnum" -ge "207"; then dnl gcc 2.7 or later WARN="$WARN -Wmissing-declarations" fi if test "$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="$WARN -Wundef -Wno-long-long -Wsign-compare" fi if test "$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="$WARN -Wno-format-nonliteral" fi dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on dnl on i686-Linux as it gives us heaps with false positives. dnl Also, on gcc 4.0.X it is totally unbearable and complains all dnl over making it unusable for generic purposes. Let's not use it. if test "$gccnum" -ge "303"; then dnl gcc 3.3 and later WARN="$WARN -Wendif-labels -Wstrict-prototypes" fi if test "$gccnum" -ge "304"; then # try these on gcc 3.4 WARN="$WARN -Wdeclaration-after-statement" 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() dnl CURL_CHECK_NONBLOCKING_SOCKET dnl ------------------------------------------------- dnl Check for how to set a socket to non-blocking state. There seems to exist dnl four known different ways, with the one used almost everywhere being POSIX dnl and XPG3, while the other different ways for different systems (old BSD, dnl Windows and Amiga). dnl dnl There are two known platforms (AIX 3.x and SunOS 4.1.x) where the dnl O_NONBLOCK define is found but does not work. This condition is attempted dnl to get caught in this script by using an excessive number of #ifdefs... dnl AC_DEFUN([CURL_CHECK_NONBLOCKING_SOCKET], [ AC_MSG_CHECKING([non-blocking sockets style]) AC_TRY_COMPILE([ /* headers for O_NONBLOCK test */ #include <sys/types.h> #include <unistd.h> #include <fcntl.h> ],[ /* try to compile O_NONBLOCK */ #if defined(sun) || defined(__sun__) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) # if defined(__SVR4) || defined(__srv4__) # define PLATFORM_SOLARIS # else # define PLATFORM_SUNOS4 # endif #endif #if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41) # define PLATFORM_AIX_V3 #endif #if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3) || defined(__BEOS__) #error "O_NONBLOCK does not work on this platform" #endif int socket; int flags = fcntl(socket, F_SETFL, flags | O_NONBLOCK); ],[ dnl the O_NONBLOCK test was fine nonblock="O_NONBLOCK" AC_DEFINE(HAVE_O_NONBLOCK, 1, [use O_NONBLOCK for non-blocking sockets]) ],[ dnl the code was bad, try a different program now, test 2 AC_TRY_COMPILE([ /* headers for FIONBIO test */ #include <unistd.h> #include <stropts.h> ],[ /* FIONBIO source test (old-style unix) */ int socket; int flags = ioctl(socket, FIONBIO, &flags); ],[ dnl FIONBIO test was good nonblock="FIONBIO" AC_DEFINE(HAVE_FIONBIO, 1, [use FIONBIO for non-blocking sockets]) ],[ dnl FIONBIO test was also bad dnl the code was bad, try a different program now, test 3 AC_TRY_COMPILE([ /* headers for ioctlsocket test (Windows) */ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include <windows.h> #ifdef HAVE_WINSOCK2_H #include <winsock2.h> #else #ifdef HAVE_WINSOCK_H #include <winsock.h> #endif #endif #endif ],[ /* ioctlsocket source code */ SOCKET sd; unsigned long flags = 0; sd = socket(0, 0, 0); ioctlsocket(sd, FIONBIO, &flags); ],[ dnl ioctlsocket test was good nonblock="ioctlsocket" AC_DEFINE(HAVE_IOCTLSOCKET, 1, [use ioctlsocket() for non-blocking sockets]) ],[ dnl ioctlsocket didnt compile!, go to test 4 AC_TRY_LINK([ /* headers for IoctlSocket test (Amiga?) */ #include <sys/ioctl.h> ],[ /* IoctlSocket source code */ int socket; int flags = IoctlSocket(socket, FIONBIO, (long)1); ],[ dnl ioctlsocket test was good nonblock="IoctlSocket" AC_DEFINE(HAVE_IOCTLSOCKET_CASE, 1, [use Ioctlsocket() for non-blocking sockets]) ],[ dnl Ioctlsocket didnt compile, do test 5! AC_TRY_COMPILE([ /* headers for SO_NONBLOCK test (BeOS) */ #include <socket.h> ],[ /* SO_NONBLOCK source code */ long b = 1; int socket; int flags = setsockopt(socket, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b)); ],[ dnl the SO_NONBLOCK test was good nonblock="SO_NONBLOCK" AC_DEFINE(HAVE_SO_NONBLOCK, 1, [use SO_NONBLOCK for non-blocking sockets]) ],[ dnl test 5 didnt compile! nonblock="nada" AC_DEFINE(HAVE_DISABLED_NONBLOCKING, 1, [disabled non-blocking sockets]) ]) dnl end of fifth test ]) dnl end of forth test ]) dnl end of third test ]) dnl end of second test ]) dnl end of non-blocking try-compile test AC_MSG_RESULT($nonblock) if test "$nonblock" = "nada"; then AC_MSG_WARN([non-block sockets disabled]) fi ]) dnl CURL_CHECK_NEED_REENTRANT_SYSTEM dnl ------------------------------------------------- dnl Checks if the preprocessor _REENTRANT definition dnl must be unconditionally done for this platform. dnl Internal macro for CURL_CONFIGURE_REENTRANT. AC_DEFUN([CURL_CHECK_NEED_REENTRANT_SYSTEM], [ case $host in *-*-solaris*) tmp_need_reentrant="yes" ;; *) tmp_need_reentrant="no" ;; esac ]) dnl CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT dnl ------------------------------------------------- dnl This macro ensures that configuration tests done dnl after this will execute with preprocessor symbol dnl _REENTRANT defined. This macro also ensures that dnl the generated config file defines NEED_REENTRANT dnl and that in turn setup.h will define _REENTRANT. dnl Internal macro for CURL_CONFIGURE_REENTRANT. AC_DEFUN([CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT], [ AC_DEFINE(NEED_REENTRANT, 1, [Define to 1 if _REENTRANT preprocessor symbol must be defined.]) cat >>confdefs.h <<_EOF #ifndef _REENTRANT # define _REENTRANT #endif _EOF ]) dnl CURL_CONFIGURE_REENTRANT dnl ------------------------------------------------- dnl This first checks if the preprocessor _REENTRANT dnl symbol is already defined. If it isn't currently dnl defined a set of checks are performed to verify dnl if its definition is required to make visible to dnl the compiler a set of *_r functions. Finally, if dnl _REENTRANT is already defined or needed it takes dnl care of making adjustments necessary to ensure dnl that it is defined equally for further configure dnl tests and generated config file. AC_DEFUN([CURL_CONFIGURE_REENTRANT], [ AC_PREREQ([2.50])dnl # AC_MSG_CHECKING([if _REENTRANT is already defined]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ ]],[[ #ifdef _REENTRANT int dummy=1; #else force compilation error #endif ]]) ],[ AC_MSG_RESULT([yes]) tmp_reentrant_initially_defined="yes" ],[ AC_MSG_RESULT([no]) tmp_reentrant_initially_defined="no" ]) # if test "$tmp_reentrant_initially_defined" = "no"; then AC_MSG_CHECKING([if _REENTRANT is actually needed]) CURL_CHECK_NEED_REENTRANT_SYSTEM if test "$tmp_need_reentrant" = "yes"; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi fi # AC_MSG_CHECKING([if _REENTRANT is onwards defined]) if test "$tmp_reentrant_initially_defined" = "yes" || test "$tmp_need_reentrant" = "yes"; then CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi # ])