mirror of
https://github.com/php/php-src.git
synced 2024-12-16 21:37:49 +08:00
277 lines
7.6 KiB
Plaintext
277 lines
7.6 KiB
Plaintext
dnl $Id$
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dnl
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dnl This file contains local autoconf functions.
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AC_DEFUN([LIBZEND_BISON_CHECK],[
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# we only support certain bison versions
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bison_version_list="1.28 1.35 1.75 1.875 2.0 2.1 2.2 2.3 2.4"
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# for standalone build of Zend Engine
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test -z "$SED" && SED=sed
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bison_version=none
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if test "$YACC"; then
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AC_CACHE_CHECK([for bison version], php_cv_bison_version, [
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bison_version_vars=`bison --version 2> /dev/null | grep 'GNU Bison' | cut -d ' ' -f 4 | $SED -e 's/\./ /' | tr -d a-z`
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php_cv_bison_version=invalid
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if test -n "$bison_version_vars"; then
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set $bison_version_vars
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bison_version="${1}.${2}"
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for bison_check_version in $bison_version_list; do
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if test "$bison_version" = "$bison_check_version"; then
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php_cv_bison_version="$bison_check_version (ok)"
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break
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fi
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done
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fi
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])
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fi
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case $php_cv_bison_version in
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""|invalid[)]
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bison_msg="bison versions supported for regeneration of the Zend/PHP parsers: $bison_version_list (found: $bison_version)."
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AC_MSG_WARN([$bison_msg])
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YACC="exit 0;"
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;;
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esac
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])
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AC_DEFUN([ZEND_FP_EXCEPT],[
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AC_CACHE_CHECK(whether fp_except is defined, ac_cv_type_fp_except,[
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AC_TRY_COMPILE([
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#include <floatingpoint.h>
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],[
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fp_except x = (fp_except) 0;
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],[
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ac_cv_type_fp_except=yes
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],[
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ac_cv_type_fp_except=no
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],[
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ac_cv_type_fp_except=no
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])])
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if test "$ac_cv_type_fp_except" = "yes"; then
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AC_DEFINE(HAVE_FP_EXCEPT, 1, [whether floatingpoint.h defines fp_except])
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fi
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])
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dnl
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dnl Check for broken sprintf()
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dnl
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AC_DEFUN([AC_ZEND_BROKEN_SPRINTF],[
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AC_CACHE_CHECK(whether sprintf is broken, ac_cv_broken_sprintf,[
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AC_TRY_RUN([main() {char buf[20];exit(sprintf(buf,"testing 123")!=11); }],[
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ac_cv_broken_sprintf=no
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],[
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ac_cv_broken_sprintf=yes
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],[
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ac_cv_broken_sprintf=no
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])
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])
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if test "$ac_cv_broken_sprintf" = "yes"; then
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ac_result=1
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else
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ac_result=0
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fi
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AC_DEFINE_UNQUOTED(ZEND_BROKEN_SPRINTF, $ac_result, [Whether sprintf is broken])
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])
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dnl
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dnl AC_ZEND_C_BIGENDIAN
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dnl Replacement macro for AC_C_BIGENDIAN
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dnl
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AC_DEFUN([AC_ZEND_C_BIGENDIAN],
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[AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian_php,
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[
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ac_cv_c_bigendian_php=unknown
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AC_TRY_RUN(
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[
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int main(void)
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{
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short one = 1;
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char *cp = (char *)&one;
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if (*cp == 0) {
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return(0);
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} else {
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return(1);
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}
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}
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], [ac_cv_c_bigendian_php=yes], [ac_cv_c_bigendian_php=no], [ac_cv_c_bigendian_php=unknown])
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])
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if test $ac_cv_c_bigendian_php = yes; then
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AC_DEFINE(WORDS_BIGENDIAN, [], [Define if processor uses big-endian word])
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fi
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])
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AC_DEFUN([AM_SET_LIBTOOL_VARIABLE],[
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LIBTOOL='$(SHELL) $(top_builddir)/libtool $1'
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])
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dnl x87 floating point internal precision control checks
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dnl See: http://wiki.php.net/rfc/rounding
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AC_DEFUN([ZEND_CHECK_FLOAT_PRECISION],[
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AC_MSG_CHECKING([for usable _FPU_SETCW])
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AC_LINK_IFELSE([[
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#include <stdio.h>
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#include <string.h>
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#include <fpu_control.h>
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double div (double a, double b) {
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fpu_control_t fpu_oldcw, fpu_cw;
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volatile double result;
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_FPU_GETCW(fpu_oldcw);
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fpu_cw = (fpu_oldcw & ~_FPU_EXTENDED & ~_FPU_SINGLE) | _FPU_DOUBLE;
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_FPU_SETCW(fpu_cw);
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result = a / b;
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_FPU_SETCW(fpu_oldcw);
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return result;
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}
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int main (int argc, char **argv) {
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double d = div (2877.0, 1000000.0);
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char buf[255];
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sprintf(buf, "%.30f", d);
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/* see if the result is actually in double precision */
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return strncmp(buf, "0.00287699", 10) == 0 ? 0 : 1;
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}
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]], [ac_cfp_have__fpu_setcw=yes], [ac_cfp_have__fpu_setcw=no])
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if test "$ac_cfp_have__fpu_setcw" = "yes" ; then
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AC_DEFINE(HAVE__FPU_SETCW, 1, [whether _FPU_SETCW is present and usable])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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AC_MSG_CHECKING([for usable fpsetprec])
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AC_LINK_IFELSE([[
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#include <stdio.h>
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#include <string.h>
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#include <machine/ieeefp.h>
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double div (double a, double b) {
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fp_prec_t fpu_oldprec;
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volatile double result;
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fpu_oldprec = fpgetprec();
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fpsetprec(FP_PD);
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result = a / b;
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fpsetprec(fpu_oldprec);
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return result;
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}
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int main (int argc, char **argv) {
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double d = div (2877.0, 1000000.0);
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char buf[255];
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sprintf(buf, "%.30f", d);
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/* see if the result is actually in double precision */
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return strncmp(buf, "0.00287699", 10) == 0 ? 0 : 1;
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}
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]], [ac_cfp_have_fpsetprec=yes], [ac_cfp_have_fpsetprec=no])
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if test "$ac_cfp_have_fpsetprec" = "yes" ; then
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AC_DEFINE(HAVE_FPSETPREC, 1, [whether fpsetprec is present and usable])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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AC_MSG_CHECKING([for usable _controlfp])
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AC_LINK_IFELSE([[
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#include <stdio.h>
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#include <string.h>
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#include <float.h>
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double div (double a, double b) {
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unsigned int fpu_oldcw;
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volatile double result;
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fpu_oldcw = _controlfp(0, 0);
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_controlfp(_PC_53, _MCW_PC);
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result = a / b;
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_controlfp(fpu_oldcw, _MCW_PC);
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return result;
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}
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int main (int argc, char **argv) {
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double d = div (2877.0, 1000000.0);
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char buf[255];
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sprintf(buf, "%.30f", d);
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/* see if the result is actually in double precision */
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return strncmp(buf, "0.00287699", 10) == 0 ? 0 : 1;
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}
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]], [ac_cfp_have__controlfp=yes], [ac_cfp_have__controlfp=no])
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if test "$ac_cfp_have__controlfp" = "yes" ; then
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AC_DEFINE(HAVE__CONTROLFP, 1, [whether _controlfp is present usable])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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AC_MSG_CHECKING([for usable _controlfp_s])
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AC_LINK_IFELSE([[
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#include <stdio.h>
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#include <string.h>
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#include <float.h>
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double div (double a, double b) {
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unsigned int fpu_oldcw, fpu_cw;
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volatile double result;
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_controlfp_s(&fpu_cw, 0, 0);
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fpu_oldcw = fpu_cw;
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_controlfp_s(&fpu_cw, _PC_53, _MCW_PC);
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result = a / b;
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_controlfp_s(&fpu_cw, fpu_oldcw, _MCW_PC);
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return result;
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}
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int main (int argc, char **argv) {
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double d = div (2877.0, 1000000.0);
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char buf[255];
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sprintf(buf, "%.30f", d);
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/* see if the result is actually in double precision */
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return strncmp(buf, "0.00287699", 10) == 0 ? 0 : 1;
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}
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]], [ac_cfp_have__controlfp_s=yes], [ac_cfp_have__controlfp_s=no])
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if test "$ac_cfp_have__controlfp_s" = "yes" ; then
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AC_DEFINE(HAVE__CONTROLFP_S, 1, [whether _controlfp_s is present and usable])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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AC_MSG_CHECKING([whether FPU control word can be manipulated by inline assembler])
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AC_LINK_IFELSE([[
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#include <stdio.h>
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#include <string.h>
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double div (double a, double b) {
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unsigned int oldcw, cw;
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volatile double result;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (*&oldcw));
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cw = (oldcw & ~0x0 & ~0x300) | 0x200;
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__asm__ __volatile__ ("fldcw %0" : : "m" (*&cw));
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result = a / b;
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__asm__ __volatile__ ("fldcw %0" : : "m" (*&oldcw));
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return result;
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}
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int main (int argc, char **argv) {
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double d = div (2877.0, 1000000.0);
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char buf[255];
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sprintf(buf, "%.30f", d);
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/* see if the result is actually in double precision */
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return strncmp(buf, "0.00287699", 10) == 0 ? 0 : 1;
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}
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]], [ac_cfp_have_fpu_inline_asm_x86=yes], [ac_cfp_have_fpu_inline_asm_x86=no])
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if test "$ac_cfp_have_fpu_inline_asm_x86" = "yes" ; then
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AC_DEFINE(HAVE_FPU_INLINE_ASM_X86, 1, [whether FPU control word can be manipulated by inline assembler])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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])
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