php-src/Zend/Zend.m4

dnl
dnl $Id$
dnl
dnl This file contains Zend specific autoconf functions.
dnl

AC_DEFUN(LIBZEND_BISON_CHECK,[

if test "$YACC" != "bison -y"; then
    AC_MSG_WARN(You will need bison if you want to regenerate the Zend parser.)
else
    AC_MSG_CHECKING(bison version)
    set `bison --version| grep 'GNU Bison' | cut -d ' ' -f 4 | sed -e 's/\./ /'`
    if test "${1}" = "1" -a "${2}" -lt "28"; then
        AC_MSG_WARN(You will need bison 1.28 if you want to regenerate the Zend parser (found ${1}.${2}).)
    fi
    AC_MSG_RESULT(${1}.${2} (ok))
fi

])

AC_DEFUN(LIBZEND_BASIC_CHECKS,[

AC_REQUIRE([AC_PROG_YACC])
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_PROG_CC_C_O])
AC_REQUIRE([AC_PROG_LEX])
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([AC_PROG_LIBTOOL])

LIBZEND_BISON_CHECK

dnl Ugly hack to get around a problem with gcc on AIX.
if test "$CC" = "gcc" -a "$ac_cv_prog_cc_g" = "yes" -a \
   "`uname -sv`" = "AIX 4"; then
	CFLAGS=`echo $CFLAGS | sed -e 's/-g//'`
fi

dnl Hack to work around a Mac OS X cpp problem
dnl Known versions needing this workaround are 5.3 and 5.4
if test "$ac_cv_prog_gcc" = "yes" -a "`uname -s`" = "Rhapsody"; then
        CPPFLAGS="$CPPFLAGS -traditional-cpp"
fi

AC_CHECK_HEADERS(
limits.h \
malloc.h \
string.h \
unistd.h \
stdarg.h \
sys/types.h \
sys/time.h \
signal.h \
unix.h \
dlfcn.h)

AC_TYPE_SIZE_T
AC_TYPE_SIGNAL

AC_CHECK_LIB(dl, dlopen, [LIBS="-ldl $LIBS"])
AC_CHECK_FUNC(dlopen,[AC_DEFINE(HAVE_LIBDL, 1,[ ])])

dnl
dnl Ugly hack to check if dlsym() requires a leading underscore in symbol name.
dnl
AC_MSG_CHECKING([whether dlsym() requires a leading underscore in symbol names])
_LT_AC_TRY_DLOPEN_SELF([
  AC_MSG_RESULT(no)
], [
  AC_MSG_RESULT(yes)
  AC_DEFINE(DLSYM_NEEDS_UNDERSCORE, 1, [Define if dlsym() requires a leading underscore in symbol names. ])
], [
  AC_MSG_RESULT(no)
], [])

dnl This is required for QNX and may be some BSD derived systems
AC_CHECK_TYPE( uint, unsigned int )
AC_CHECK_TYPE( ulong, unsigned long )

dnl Checks for library functions.
AC_FUNC_VPRINTF
AC_FUNC_MEMCMP
AC_FUNC_ALLOCA
AC_CHECK_FUNCS(memcpy strdup getpid kill strtod strtol finite fpclass)
AC_ZEND_BROKEN_SPRINTF

AC_CHECK_FUNCS(finite isfinite isinf isnan)

ZEND_FP_EXCEPT
	
])

AC_DEFUN(LIBZEND_ENABLE_DEBUG,[

AC_ARG_ENABLE(debug,
[  --enable-debug         Compile with debugging symbols],[
  ZEND_DEBUG=$enableval
],[
  ZEND_DEBUG=no
])  

])

AC_DEFUN(LIBZEND_OTHER_CHECKS,[

AC_ARG_ENABLE(experimental-zts,
[  --enable-experimental-zts   This will most likely break your build],[
  ZEND_EXPERIMENTAL_ZTS=$enableval
],[
  ZEND_EXPERIMENTAL_ZTS=no
])  

AC_ARG_ENABLE(inline-optimization,
[  --disable-inline-optimization If building zend_execute.lo fails, try
                                this switch.],[
  ZEND_INLINE_OPTIMIZATION=$enableval
],[
  ZEND_INLINE_OPTIMIZATION=yes
])

AC_ARG_ENABLE(memory-limit,
[  --enable-memory-limit   Compile with memory limit support. ], [
  ZEND_MEMORY_LIMIT=$enableval
],[
  ZEND_MEMORY_LIMIT=no
])

AC_MSG_CHECKING(whether to enable thread-safety)
AC_MSG_RESULT($ZEND_EXPERIMENTAL_ZTS)

AC_MSG_CHECKING(whether to enable inline optimization for GCC)
AC_MSG_RESULT($ZEND_INLINE_OPTIMIZATION)

AC_MSG_CHECKING(whether to enable a memory limit)
AC_MSG_RESULT($ZEND_MEMORY_LIMIT)

AC_MSG_CHECKING(whether to enable Zend debugging)
AC_MSG_RESULT($ZEND_DEBUG)
	
if test "$ZEND_DEBUG" = "yes"; then
  AC_DEFINE(ZEND_DEBUG,1,[ ])
  echo " $CFLAGS" | grep ' -g' >/dev/null || DEBUG_CFLAGS="-g"
  if test "$CFLAGS" = "-g -O2"; then
  	CFLAGS=-g
  fi
  test -n "$GCC" && DEBUG_CFLAGS="$DEBUG_CFLAGS -Wall"
  test -n "$GCC" && test "$USE_MAINTAINER_MODE" = "yes" && \
    DEBUG_CFLAGS="$DEBUG_CFLAGS -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations"
else
  AC_DEFINE(ZEND_DEBUG,0,[ ])
fi

test -n "$DEBUG_CFLAGS" && CFLAGS="$CFLAGS $DEBUG_CFLAGS"

if test "$ZEND_EXPERIMENTAL_ZTS" = "yes"; then
  AC_DEFINE(ZTS,1,[ ])
  CFLAGS="$CFLAGS -DZTS"
  LIBZEND_CPLUSPLUS_CHECKS
fi  

if test "$ZEND_MEMORY_LIMIT" = "yes"; then
  AC_DEFINE(MEMORY_LIMIT, 1, [Memory limit])
else
  AC_DEFINE(MEMORY_LIMIT, 0, [Memory limit])
fi


changequote({,})
if test -n "$GCC" && test "$ZEND_INLINE_OPTIMIZATION" != "yes"; then
  INLINE_CFLAGS=`echo $ac_n "$CFLAGS $ac_c" | sed s/-O[0-9s]*//`
else
  INLINE_CFLAGS="$CFLAGS"
fi
changequote([,])

AC_C_INLINE

AC_SUBST(INLINE_CFLAGS)

])

AC_DEFUN(LIBZEND_CPLUSPLUS_CHECKS,[

])

dnl test and set the alignment define for ZEND_MM
dnl this also does the logarithmic test for ZEND_MM.

AC_MSG_CHECKING(for MM alignment and log values)

AC_TRY_RUN([#include <stdio.h>

typedef union _mm_align_test {
  void *ptr;
  double dbl;
  long lng;
} mm_align_test;

int main() {

#if (defined (__GNUC__) && __GNUC__ >= 2)
#define ZEND_MM_ALIGNMENT (__alignof__ (mm_align_test))
#else
#define ZEND_MM_ALIGNMENT (sizeof(mm_align_test))
#endif

int i = ZEND_MM_ALIGNMENT;
int zeros = 0;
FILE *f = fopen("conftest.zend", "w");

while (i & ~0x1) {
  zeros++;
  i = i >> 1;
}

fprintf(f, "%d %d", ZEND_MM_ALIGNMENT, zeros);  

 exit(0);
}],zend_mm_test=true,zend_mm_test=false,zend_mm_test=false)

if test $zend_mm_test = true; then

	LIBZEND_MM_ALIGN=`cat ./conftest.zend | cut -d ' ' -f 1`
	LIBZEND_MM_ALIGN_LOG2=`cat ./conftest.zend | cut -d ' ' -f 2`

	AC_DEFINE_UNQUOTED(ZEND_MM_ALIGNMENT, $LIBZEND_MM_ALIGN, [ ])
	AC_DEFINE_UNQUOTED(ZEND_MM_ALIGNMENT_LOG2, $LIBZEND_MM_ALIGN_LOG2, [ ]) 
fi;

AC_MSG_RESULT(done)