|
Packit |
64f477 |
dnl AC_C_RESTRICT
|
|
Packit |
64f477 |
dnl Do nothing if the compiler accepts the restrict keyword.
|
|
Packit |
64f477 |
dnl Otherwise define restrict to __restrict__ or __restrict if one of
|
|
Packit |
64f477 |
dnl those work, otherwise define restrict to be empty.
|
|
Packit |
64f477 |
AC_DEFUN([AC_C_RESTRICT],
|
|
Packit |
64f477 |
[AC_MSG_CHECKING([for restrict])
|
|
Packit |
64f477 |
ac_cv_c_restrict=no
|
|
Packit |
64f477 |
for ac_kw in restrict __restrict__ __restrict; do
|
|
Packit |
64f477 |
AC_TRY_COMPILE([],[char * $ac_kw p;],[ac_cv_c_restrict=$ac_kw; break])
|
|
Packit |
64f477 |
done
|
|
Packit |
64f477 |
AC_MSG_RESULT([$ac_cv_c_restrict])
|
|
Packit |
64f477 |
case $ac_cv_c_restrict in
|
|
Packit |
64f477 |
restrict) ;;
|
|
Packit |
64f477 |
no) AC_DEFINE([restrict],,
|
|
Packit |
64f477 |
[Define as `__restrict' if that's what the C compiler calls
|
|
Packit |
64f477 |
it, or to nothing if it is not supported.]) ;;
|
|
Packit |
64f477 |
*) AC_DEFINE_UNQUOTED([restrict],$ac_cv_c_restrict) ;;
|
|
Packit |
64f477 |
esac])
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
dnl AC_C_ALWAYS_INLINE
|
|
Packit |
64f477 |
dnl Define inline to something appropriate, including the new always_inline
|
|
Packit |
64f477 |
dnl attribute from gcc 3.1
|
|
Packit |
64f477 |
AC_DEFUN([AC_C_ALWAYS_INLINE],
|
|
Packit |
64f477 |
[AC_C_INLINE
|
|
Packit |
64f477 |
if test x"$GCC" = x"yes" -a x"$ac_cv_c_inline" = x"inline"; then
|
|
Packit |
64f477 |
AC_MSG_CHECKING([for always_inline])
|
|
Packit |
64f477 |
SAVE_CFLAGS="$CFLAGS"
|
|
Packit |
64f477 |
CFLAGS="$CFLAGS -Wall -Werror"
|
|
Packit |
64f477 |
AC_TRY_COMPILE([],[__attribute__ ((__always_inline__)) void f (void);],
|
|
Packit |
64f477 |
[ac_cv_always_inline=yes],[ac_cv_always_inline=no])
|
|
Packit |
64f477 |
CFLAGS="$SAVE_CFLAGS"
|
|
Packit |
64f477 |
AC_MSG_RESULT([$ac_cv_always_inline])
|
|
Packit |
64f477 |
if test x"$ac_cv_always_inline" = x"yes"; then
|
|
Packit |
64f477 |
AC_DEFINE_UNQUOTED([inline],[__attribute__ ((__always_inline__))])
|
|
Packit |
64f477 |
fi
|
|
Packit |
64f477 |
fi])
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
dnl AC_C_ATTRIBUTE_ALIGNED
|
|
Packit |
64f477 |
dnl define ATTRIBUTE_ALIGNED_MAX to the maximum alignment if this is supported
|
|
Packit |
64f477 |
AC_DEFUN([AC_C_ATTRIBUTE_ALIGNED],
|
|
Packit |
64f477 |
[AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
|
|
Packit |
64f477 |
[ac_cv_c_attribute_aligned],
|
|
Packit |
64f477 |
[ac_cv_c_attribute_aligned=0
|
|
Packit |
64f477 |
for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
|
|
Packit |
64f477 |
AC_TRY_COMPILE([],
|
|
Packit |
64f477 |
[static char c __attribute__ ((aligned($ac_cv_c_attr_align_try))) = 0; return c;],
|
|
Packit |
64f477 |
[ac_cv_c_attribute_aligned=$ac_cv_c_attr_align_try])
|
|
Packit |
64f477 |
done])
|
|
Packit |
64f477 |
if test x"$ac_cv_c_attribute_aligned" != x"0"; then
|
|
Packit |
64f477 |
AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX],
|
|
Packit |
64f477 |
[$ac_cv_c_attribute_aligned],[maximum supported data alignment])
|
|
Packit |
64f477 |
fi])
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
dnl AC_TRY_CFLAGS (CFLAGS, [ACTION-IF-WORKS], [ACTION-IF-FAILS])
|
|
Packit |
64f477 |
dnl check if $CC supports a given set of cflags
|
|
Packit |
64f477 |
AC_DEFUN([AC_TRY_CFLAGS],
|
|
Packit |
64f477 |
[AC_MSG_CHECKING([if $CC supports $1 flags])
|
|
Packit |
64f477 |
SAVE_CFLAGS="$CFLAGS"
|
|
Packit |
64f477 |
CFLAGS="$1"
|
|
Packit |
64f477 |
AC_TRY_COMPILE([],[],[ac_cv_try_cflags_ok=yes],[ac_cv_try_cflags_ok=no])
|
|
Packit |
64f477 |
CFLAGS="$SAVE_CFLAGS"
|
|
Packit |
64f477 |
AC_MSG_RESULT([$ac_cv_try_cflags_ok])
|
|
Packit |
64f477 |
if test x"$ac_cv_try_cflags_ok" = x"yes"; then
|
|
Packit |
64f477 |
ifelse([$2],[],[:],[$2])
|
|
Packit |
64f477 |
else
|
|
Packit |
64f477 |
ifelse([$3],[],[:],[$3])
|
|
Packit |
64f477 |
fi])
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
dnl AC_CHECK_GENERATE_INTTYPES_H (INCLUDE-DIRECTORY)
|
|
Packit |
64f477 |
dnl generate a default inttypes.h if the header file does not exist already
|
|
Packit |
64f477 |
AC_DEFUN([AC_CHECK_GENERATE_INTTYPES],
|
|
Packit |
64f477 |
[rm -f $1/inttypes.h
|
|
Packit |
64f477 |
AC_CHECK_HEADER([inttypes.h],[],
|
|
Packit |
64f477 |
[AC_CHECK_SIZEOF([char])
|
|
Packit |
64f477 |
AC_CHECK_SIZEOF([short])
|
|
Packit |
64f477 |
AC_CHECK_SIZEOF([int])
|
|
Packit |
64f477 |
if test x"$ac_cv_sizeof_char" != x"1" -o \
|
|
Packit |
64f477 |
x"$ac_cv_sizeof_short" != x"2" -o \
|
|
Packit |
64f477 |
x"$ac_cv_sizeof_int" != x"4"; then
|
|
Packit |
64f477 |
AC_MSG_ERROR([can not build a default inttypes.h])
|
|
Packit |
64f477 |
fi
|
|
Packit |
64f477 |
cat >$1/inttypes.h << EOF
|
|
Packit |
64f477 |
/* default inttypes.h for people who do not have it on their system */
|
|
Packit |
64f477 |
|
|
Packit |
64f477 |
#ifndef _INTTYPES_H
|
|
Packit |
64f477 |
#define _INTTYPES_H
|
|
Packit |
64f477 |
#if (!defined __int8_t_defined) && (!defined __BIT_TYPES_DEFINED__)
|
|
Packit |
64f477 |
#define __int8_t_defined
|
|
Packit |
64f477 |
typedef signed char int8_t;
|
|
Packit |
64f477 |
typedef signed short int16_t;
|
|
Packit |
64f477 |
typedef signed int int32_t;
|
|
Packit |
64f477 |
#ifdef ARCH_X86
|
|
Packit |
64f477 |
typedef signed long long int64_t;
|
|
Packit |
64f477 |
#endif
|
|
Packit |
64f477 |
#endif
|
|
Packit |
64f477 |
#if (!defined _LINUX_TYPES_H)
|
|
Packit |
64f477 |
typedef unsigned char uint8_t;
|
|
Packit |
64f477 |
typedef unsigned short uint16_t;
|
|
Packit |
64f477 |
typedef unsigned int uint32_t;
|
|
Packit |
64f477 |
#ifdef ARCH_X86
|
|
Packit |
64f477 |
typedef unsigned long long uint64_t;
|
|
Packit |
64f477 |
#endif
|
|
Packit |
64f477 |
#endif
|
|
Packit |
64f477 |
#endif
|
|
Packit |
64f477 |
EOF
|
|
Packit |
64f477 |
])])
|