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;;
esac
AC_C_BIGENDIAN([
AC_DEFINE(OF_BIG_ENDIAN, 1, [Whether we are big endian])
])
AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)
AS_IF([test x"$ac_cv_sizeof_float" != x"4" -o x"$ac_cv_sizeof_double" != x"8"],
[AC_MSG_ERROR(
[Floating point implementation does not conform to IEEE 754!])])
AC_MSG_CHECKING(for floating point endianess)
float_endianess="unknown"
AC_TRY_COMPILE([
double endianess = 184092775106.859375;
], [
], [
AS_IF([$EGREP BEndian conftest.$ac_objext >/dev/null], [
AC_DEFINE(OF_FLOAT_BIG_ENDIAN, 1,
[Whether floats are big endian])
float_endianess="big endian"
], [
AS_IF([$EGREP naidnEB conftest.$ac_objext >/dev/null], [
float_endianess="little endian"
])
])
])
AC_MSG_RESULT($float_endianess)
AS_IF([test x"$float_endianess" = x"unknown"], [
AC_MSG_ERROR(
[Floating point implementation does not conform to IEEE 754!])])
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;;
esac
AC_C_BIGENDIAN([
AC_DEFINE(OF_BIG_ENDIAN, 1, [Whether we are big endian])
])
AC_MSG_CHECKING(for SIZE_MAX)
AC_EGREP_CPP(yes, [
#include <stdint.h>
#include <limits.h>
#ifdef SIZE_MAX
yes
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#include <limits.h>
#ifdef SIZE_T_MAX
yes
#endif
], [
AC_MSG_RESULT(yes)
size_max="SIZE_T_MAX"], [
AC_MSG_RESULT(no)
size_max="(~(size_t)0)"
])
AC_DEFINE_UNQUOTED(SIZE_MAX, $size_max, [Maximum value for size_t])
])
AC_CHECK_FUNC(asprintf, [
case "$host" in
*-psp-*)
dnl asprintf is broken on the PSP, but snprintf works.
have_asprintf="no"
AC_SUBST(ASPRINTF_M, "asprintf.m")
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#include <limits.h>
#ifdef SIZE_T_MAX
yes
#endif
], [
AC_MSG_RESULT(yes)
size_max="SIZE_T_MAX"
], [
AC_MSG_RESULT(no)
size_max="(~(size_t)0)"
])
AC_DEFINE_UNQUOTED(SIZE_MAX, $size_max, [Maximum value for size_t])
])
AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)
AS_IF([test x"$ac_cv_sizeof_float" != x"4" -o x"$ac_cv_sizeof_double" != x"8"],
[AC_MSG_ERROR(
[Floating point implementation does not conform to IEEE 754!])])
AC_MSG_CHECKING(for floating point endianess)
fp_endianess="unknown"
AC_TRY_COMPILE([
double endianess = 184092775106.859375;
], [
], [
AS_IF([$EGREP BEndian conftest.$ac_objext >/dev/null], [
AC_DEFINE(OF_FLOAT_BIG_ENDIAN, 1,
[Whether floats are big endian])
fp_endianess="big endian"
], [
AS_IF([$EGREP naidnEB conftest.$ac_objext >/dev/null], [
fp_endianess="little endian"
])
])
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
AC_MSG_ERROR(
[Floating point implementation does not conform to IEEE 754!])])
AC_CHECK_LIB(m, fmod, LIBS="$LIBS -lm")
AC_MSG_CHECKING(for M_PI)
AC_EGREP_CPP(yes, [
#include <math.h>
#ifdef M_PI
yes
#endif
], [
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_DEFINE(M_PI, 3.141592653589793238462643, [Precalculated Pi])
])
AC_CHECK_FUNC(asprintf, [
case "$host" in
*-psp-*)
dnl asprintf is broken on the PSP, but snprintf works.
have_asprintf="no"
AC_SUBST(ASPRINTF_M, "asprintf.m")
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])
])
AC_MSG_RESULT($ac_cv_snprintf_useful_ret)
])
test x"$have_asprintf" != x"yes" -a x"$ac_cv_snprintf_useful_ret" != x"yes" && \
AC_MSG_ERROR(No asprintf and no snprintf returning required space!)
AC_CHECK_LIB(m, fmod, LIBS="$LIBS -lm")
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])
])
AC_MSG_RESULT($ac_cv_snprintf_useful_ret)
])
test x"$have_asprintf" != x"yes" -a x"$ac_cv_snprintf_useful_ret" != x"yes" && \
AC_MSG_ERROR(No asprintf and no snprintf returning required space!)
AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl")
AC_ARG_ENABLE(threads,
AS_HELP_STRING([--disable-threads], [disable thread support]))
AS_IF([test x"$enable_threads" != x"no"], [
case "$host_os" in
mingw*)
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