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152 lines
4.8 KiB
Plaintext
152 lines
4.8 KiB
Plaintext
# Macros that test various C library quirks
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# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.17 2003/04/06 22:45:22 petere Exp $
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# PGAC_VAR_INT_TIMEZONE
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# ---------------------
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# Check if the global variable `timezone' exists. If so, define
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# HAVE_INT_TIMEZONE.
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AC_DEFUN([PGAC_VAR_INT_TIMEZONE],
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[AC_CACHE_CHECK(for int timezone, pgac_cv_var_int_timezone,
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[AC_TRY_LINK([#include <time.h>
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int res;],
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[res = timezone / 60;],
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[pgac_cv_var_int_timezone=yes],
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[pgac_cv_var_int_timezone=no])])
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if test x"$pgac_cv_var_int_timezone" = xyes ; then
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AC_DEFINE(HAVE_INT_TIMEZONE,, [Define to 1 if you have the global variable 'int timezone'.])
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fi])# PGAC_VAR_INT_TIMEZONE
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# PGAC_FUNC_GETTIMEOFDAY_1ARG
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# ---------------------------
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# Check if gettimeofday() has only one arguments. (Normal is two.)
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# If so, define GETTIMEOFDAY_1ARG.
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AC_DEFUN([PGAC_FUNC_GETTIMEOFDAY_1ARG],
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[AC_CACHE_CHECK(whether gettimeofday takes only one argument,
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pgac_cv_func_gettimeofday_1arg,
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[AC_TRY_COMPILE([#include <sys/time.h>],
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[struct timeval *tp;
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struct timezone *tzp;
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gettimeofday(tp,tzp);],
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[pgac_cv_func_gettimeofday_1arg=no],
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[pgac_cv_func_gettimeofday_1arg=yes])])
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if test x"$pgac_cv_func_gettimeofday_1arg" = xyes ; then
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AC_DEFINE(GETTIMEOFDAY_1ARG,, [Define to 1 if gettimeofday() takes only 1 argument.])
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fi
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AH_VERBATIM(GETTIMEOFDAY_1ARG_,
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[@%:@ifdef GETTIMEOFDAY_1ARG
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@%:@ define gettimeofday(a,b) gettimeofday(a)
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@%:@endif])dnl
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])# PGAC_FUNC_GETTIMEOFDAY_1ARG
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# PGAC_UNION_SEMUN
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# ----------------
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# Check if `union semun' exists. Define HAVE_UNION_SEMUN if so.
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# If it doesn't then one could define it as
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# union semun { int val; struct semid_ds *buf; unsigned short *array; }
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AC_DEFUN([PGAC_UNION_SEMUN],
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[AC_CHECK_TYPES([union semun], [], [],
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[#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/sem.h>])])# PGAC_UNION_SEMUN
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# PGAC_STRUCT_SOCKADDR_UN
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# -----------------------
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# If `struct sockaddr_un' exists, define HAVE_STRUCT_SOCKADDR_UN. If
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# it is missing then one could define it as { short int sun_family;
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# char sun_path[108]; }. (Requires test for <sys/un.h>!)
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AC_DEFUN([PGAC_STRUCT_SOCKADDR_UN],
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[AC_CHECK_TYPES([struct sockaddr_un], [], [],
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[#include <sys/types.h>
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#ifdef HAVE_SYS_UN_H
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#include <sys/un.h>
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#endif
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])])# PGAC_STRUCT_SOCKADDR_UN
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# PGAC_STRUCT_ADDRINFO
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# -----------------------
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# If `struct addrinfo' exists, define HAVE_STRUCT_ADDRINFO.
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AC_DEFUN([PGAC_STRUCT_ADDRINFO],
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[AC_CHECK_TYPES([struct addrinfo], [], [],
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[#include <sys/socket.h>
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#include <netdb.h>
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])])# PGAC_STRUCT_ADDRINFO
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# PGAC_FUNC_POSIX_SIGNALS
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# -----------------------
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# Check to see if the machine has the POSIX signal interface. Define
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# HAVE_POSIX_SIGNALS if so. Also set the output variable HAVE_POSIX_SIGNALS
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# to yes or no.
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#
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# Note that this test only compiles a test program, it doesn't check
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# whether the routines actually work. If that becomes a problem, make
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# a fancier check.
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AC_DEFUN([PGAC_FUNC_POSIX_SIGNALS],
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[AC_CACHE_CHECK(for POSIX signal interface, pgac_cv_func_posix_signals,
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[AC_TRY_LINK([#include <signal.h>
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],
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[struct sigaction act, oact;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_RESTART;
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sigaction(0, &act, &oact);],
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[pgac_cv_func_posix_signals=yes],
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[pgac_cv_func_posix_signals=no])])
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if test x"$pgac_cv_func_posix_signals" = xyes ; then
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AC_DEFINE(HAVE_POSIX_SIGNALS,, [Define to 1 if you have the POSIX signal interface.])
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fi
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HAVE_POSIX_SIGNALS=$pgac_cv_func_posix_signals
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AC_SUBST(HAVE_POSIX_SIGNALS)])# PGAC_FUNC_POSIX_SIGNALS
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# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
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# ---------------------------------------
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# Determine which format snprintf uses for long long int. We handle
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# %lld, %qd, %I64d. The result is in shell variable
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# LONG_LONG_INT_FORMAT.
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AC_DEFUN([PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT],
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[AC_MSG_CHECKING([snprintf format for long long int])
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AC_CACHE_VAL(pgac_cv_snprintf_long_long_int_format,
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[for pgac_format in '%lld' '%qd' '%I64d'; do
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AC_TRY_RUN([#include <stdio.h>
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typedef long long int int64;
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#define INT64_FORMAT "$pgac_format"
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int64 a = 20000001;
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int64 b = 40000005;
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int does_int64_snprintf_work()
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{
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int64 c;
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char buf[100];
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if (sizeof(int64) != 8)
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return 0; /* doesn't look like the right size */
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c = a * b;
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snprintf(buf, 100, INT64_FORMAT, c);
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if (strcmp(buf, "800000140000005") != 0)
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return 0; /* either multiply or snprintf is busted */
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return 1;
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}
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main() {
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exit(! does_int64_snprintf_work());
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}],
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[pgac_cv_snprintf_long_long_int_format=$pgac_format; break],
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[],
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[pgac_cv_snprintf_long_long_int_format=cross; break])
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done])dnl AC_CACHE_VAL
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LONG_LONG_INT_FORMAT=''
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case $pgac_cv_snprintf_long_long_int_format in
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cross) AC_MSG_RESULT([cannot test (not on host machine)]);;
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?*) AC_MSG_RESULT([$pgac_cv_snprintf_long_long_int_format])
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LONG_LONG_INT_FORMAT=$pgac_cv_snprintf_long_long_int_format;;
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*) AC_MSG_RESULT(none);;
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esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
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