Annotation of embedaddon/php/Zend/acinclude.m4, revision 1.1.1.1
1.1 misho 1: dnl $Id: acinclude.m4 312109 2011-06-12 17:26:45Z felipe $
2: dnl
3: dnl This file contains local autoconf functions.
4:
5: AC_DEFUN([LIBZEND_BISON_CHECK],[
6: # we only support certain bison versions
7: bison_version_list="1.28 1.35 1.75 1.875 2.0 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.5"
8:
9: # for standalone build of Zend Engine
10: test -z "$SED" && SED=sed
11:
12: bison_version=none
13: if test "$YACC"; then
14: AC_CACHE_CHECK([for bison version], php_cv_bison_version, [
15: bison_version_vars=`bison --version 2> /dev/null | grep 'GNU Bison' | cut -d ' ' -f 4 | $SED -e 's/\./ /' | tr -d a-z`
16: php_cv_bison_version=invalid
17: if test -n "$bison_version_vars"; then
18: set $bison_version_vars
19: bison_version="${1}.${2}"
20: for bison_check_version in $bison_version_list; do
21: if test "$bison_version" = "$bison_check_version"; then
22: php_cv_bison_version="$bison_check_version (ok)"
23: break
24: fi
25: done
26: fi
27: ])
28: fi
29: case $php_cv_bison_version in
30: ""|invalid[)]
31: bison_msg="bison versions supported for regeneration of the Zend/PHP parsers: $bison_version_list (found: $bison_version)."
32: AC_MSG_WARN([$bison_msg])
33: YACC="exit 0;"
34: ;;
35: esac
36: ])
37:
38: AC_DEFUN([ZEND_FP_EXCEPT],[
39: AC_CACHE_CHECK(whether fp_except is defined, ac_cv_type_fp_except,[
40: AC_TRY_COMPILE([
41: #include <floatingpoint.h>
42: ],[
43: fp_except x = (fp_except) 0;
44: ],[
45: ac_cv_type_fp_except=yes
46: ],[
47: ac_cv_type_fp_except=no
48: ],[
49: ac_cv_type_fp_except=no
50: ])])
51: if test "$ac_cv_type_fp_except" = "yes"; then
52: AC_DEFINE(HAVE_FP_EXCEPT, 1, [whether floatingpoint.h defines fp_except])
53: fi
54: ])
55:
56: dnl
57: dnl Check for broken sprintf()
58: dnl
59: AC_DEFUN([AC_ZEND_BROKEN_SPRINTF],[
60: AC_CACHE_CHECK(whether sprintf is broken, ac_cv_broken_sprintf,[
61: AC_TRY_RUN([main() {char buf[20];exit(sprintf(buf,"testing 123")!=11); }],[
62: ac_cv_broken_sprintf=no
63: ],[
64: ac_cv_broken_sprintf=yes
65: ],[
66: ac_cv_broken_sprintf=no
67: ])
68: ])
69: if test "$ac_cv_broken_sprintf" = "yes"; then
70: ac_result=1
71: else
72: ac_result=0
73: fi
74: AC_DEFINE_UNQUOTED(ZEND_BROKEN_SPRINTF, $ac_result, [Whether sprintf is broken])
75: ])
76:
77: dnl
78: dnl AC_ZEND_C_BIGENDIAN
79: dnl Replacement macro for AC_C_BIGENDIAN
80: dnl
81: AC_DEFUN([AC_ZEND_C_BIGENDIAN],
82: [AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian_php,
83: [
84: ac_cv_c_bigendian_php=unknown
85: AC_TRY_RUN(
86: [
87: int main(void)
88: {
89: short one = 1;
90: char *cp = (char *)&one;
91:
92: if (*cp == 0) {
93: return(0);
94: } else {
95: return(1);
96: }
97: }
98: ], [ac_cv_c_bigendian_php=yes], [ac_cv_c_bigendian_php=no], [ac_cv_c_bigendian_php=unknown])
99: ])
100: if test $ac_cv_c_bigendian_php = yes; then
101: AC_DEFINE(WORDS_BIGENDIAN, [], [Define if processor uses big-endian word])
102: fi
103: ])
104:
105: AC_DEFUN([AM_SET_LIBTOOL_VARIABLE],[
106: LIBTOOL='$(SHELL) $(top_builddir)/libtool $1'
107: ])
108:
109: dnl x87 floating point internal precision control checks
110: dnl See: http://wiki.php.net/rfc/rounding
111: AC_DEFUN([ZEND_CHECK_FLOAT_PRECISION],[
112: AC_MSG_CHECKING([for usable _FPU_SETCW])
113: AC_TRY_LINK([
114: #include <fpu_control.h>
115: ],[
116: fpu_control_t fpu_oldcw, fpu_cw;
117: volatile double result;
118: double a = 2877.0;
119: volatile double b = 1000000.0;
120:
121: _FPU_GETCW(fpu_oldcw);
122: fpu_cw = (fpu_oldcw & ~_FPU_EXTENDED & ~_FPU_SINGLE) | _FPU_DOUBLE;
123: _FPU_SETCW(fpu_cw);
124: result = a / b;
125: _FPU_SETCW(fpu_oldcw);
126: ], [ac_cfp_have__fpu_setcw=yes], [ac_cfp_have__fpu_setcw=no])
127: if test "$ac_cfp_have__fpu_setcw" = "yes" ; then
128: AC_DEFINE(HAVE__FPU_SETCW, 1, [whether _FPU_SETCW is present and usable])
129: AC_MSG_RESULT(yes)
130: else
131: AC_MSG_RESULT(no)
132: fi
133:
134: AC_MSG_CHECKING([for usable fpsetprec])
135: AC_TRY_LINK([
136: #include <machine/ieeefp.h>
137: ],[
138: fp_prec_t fpu_oldprec;
139: volatile double result;
140: double a = 2877.0;
141: volatile double b = 1000000.0;
142:
143: fpu_oldprec = fpgetprec();
144: fpsetprec(FP_PD);
145: result = a / b;
146: fpsetprec(fpu_oldprec);
147: ], [ac_cfp_have_fpsetprec=yes], [ac_cfp_have_fpsetprec=no])
148: if test "$ac_cfp_have_fpsetprec" = "yes" ; then
149: AC_DEFINE(HAVE_FPSETPREC, 1, [whether fpsetprec is present and usable])
150: AC_MSG_RESULT(yes)
151: else
152: AC_MSG_RESULT(no)
153: fi
154:
155: AC_MSG_CHECKING([for usable _controlfp])
156: AC_TRY_LINK([
157: #include <float.h>
158: ],[
159: unsigned int fpu_oldcw;
160: volatile double result;
161: double a = 2877.0;
162: volatile double b = 1000000.0;
163:
164: fpu_oldcw = _controlfp(0, 0);
165: _controlfp(_PC_53, _MCW_PC);
166: result = a / b;
167: _controlfp(fpu_oldcw, _MCW_PC);
168: ], [ac_cfp_have__controlfp=yes], [ac_cfp_have__controlfp=no])
169: if test "$ac_cfp_have__controlfp" = "yes" ; then
170: AC_DEFINE(HAVE__CONTROLFP, 1, [whether _controlfp is present usable])
171: AC_MSG_RESULT(yes)
172: else
173: AC_MSG_RESULT(no)
174: fi
175:
176: AC_MSG_CHECKING([for usable _controlfp_s])
177: AC_TRY_LINK([
178: #include <float.h>
179: ],[
180: unsigned int fpu_oldcw, fpu_cw;
181: volatile double result;
182: double a = 2877.0;
183: volatile double b = 1000000.0;
184:
185: _controlfp_s(&fpu_cw, 0, 0);
186: fpu_oldcw = fpu_cw;
187: _controlfp_s(&fpu_cw, _PC_53, _MCW_PC);
188: result = a / b;
189: _controlfp_s(&fpu_cw, fpu_oldcw, _MCW_PC);
190: ], [ac_cfp_have__controlfp_s=yes], [ac_cfp_have__controlfp_s=no])
191: if test "$ac_cfp_have__controlfp_s" = "yes" ; then
192: AC_DEFINE(HAVE__CONTROLFP_S, 1, [whether _controlfp_s is present and usable])
193: AC_MSG_RESULT(yes)
194: else
195: AC_MSG_RESULT(no)
196: fi
197:
198: AC_MSG_CHECKING([whether FPU control word can be manipulated by inline assembler])
199: AC_TRY_LINK([
200: /* nothing */
201: ],[
202: unsigned int oldcw, cw;
203: volatile double result;
204: double a = 2877.0;
205: volatile double b = 1000000.0;
206:
207: __asm__ __volatile__ ("fnstcw %0" : "=m" (*&oldcw));
208: cw = (oldcw & ~0x0 & ~0x300) | 0x200;
209: __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw));
210:
211: result = a / b;
212:
213: __asm__ __volatile__ ("fldcw %0" : : "m" (*&oldcw));
214: ], [ac_cfp_have_fpu_inline_asm_x86=yes], [ac_cfp_have_fpu_inline_asm_x86=no])
215: if test "$ac_cfp_have_fpu_inline_asm_x86" = "yes" ; then
216: AC_DEFINE(HAVE_FPU_INLINE_ASM_X86, 1, [whether FPU control word can be manipulated by inline assembler])
217: AC_MSG_RESULT(yes)
218: else
219: AC_MSG_RESULT(no)
220: fi
221: ])
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