dnl AC_NEED_STDINT_H ( HEADER-TO-GENERATE ) dnl Copyright 2001-2002 by Dan Fandrich dnl This file may be copied and used freely without restrictions. No warranty dnl is expressed or implied. dnl dnl Look for a header file that defines size-specific integer types like the dnl ones recommended to be in stdint.h in the C99 standard (e.g. uint32_t). dnl This is a dumbed-down version of the macro of the same name in the file dnl ac_need_stdint_h.m4 which is part of the ac-archive, available at dnl (also, another macro dnl AC_CREATE_STDINT_H by the same author). This version is not as smart, dnl but works on older autoconf versions and has a different license. dnl AX_CHECK_DEFINED_TYPE ( TYPE, FILE, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND ) dnl This is similar to _AC_CHECK_TYPE_NEW (a.k.a. new syntax version of dnl AC_CHECK_TYPE) in autoconf 2.50 but works on older versions AC_DEFUN([AX_CHECK_DEFINED_TYPE], [AC_MSG_CHECKING([for $1 in $2]) AC_EGREP_CPP(changequote(<<,>>)dnl <<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl changequote([,]), [#include <$2>], ac_cv_type_$1=yes, ac_cv_type_$1=no)dnl AC_MSG_RESULT($ac_cv_type_$1) if test $ac_cv_type_$1 = yes; then $3 else $4 fi ]) dnl Look for a header file that defines size-specific integer types AC_DEFUN([AX_NEED_STDINT_H], [ ac_dir=`AS_DIRNAME(["$1"])` if test "$ac_dir" != "$1" && test "$ac_dir" != .; then # The file is in a subdirectory. test ! -d "$ac_dir" && AS_MKDIR_P(["$ac_dir"]) fi AX_CHECK_DEFINED_TYPE(uint8_t, stdint.h, [ cat > "$1" < EOF], [AX_CHECK_DEFINED_TYPE(uint8_t, inttypes.h, [cat > "$1" < EOF], [AX_CHECK_DEFINED_TYPE(uint8_t, sys/types.h, [cat > "$1" < EOF], [AX_CHECK_DEFINED_TYPE(u_int8_t, sys/types.h, [cat > "$1" < typedef u_int8_t uint8_t; typedef u_int16_t uint16_t; typedef u_int32_t uint32_t; EOF AX_CHECK_DEFINED_TYPE(u_int64_t, sys/types.h, [cat >> "$1" <> "$1" <]) AC_CHECK_TYPE(uint64_t,[and64="/uint64_t"],[and64=""],[#include<$i>]) m4_ifvaln([$1],[$1]) break done AC_MSG_CHECKING([for stdint uintptr_t]) ]) ]) AC_DEFUN([AX_CHECK_HEADER_STDINT_O],[ AC_CACHE_CHECK([for stdint uint32_t], [ac_cv_header_stdint_o],[ ac_cv_header_stdint_o="" # the 1995 typedefs (sys/inttypes.h) AC_MSG_RESULT([(..)]) for i in m4_ifval([$1],[$1],[inttypes.h sys/inttypes.h stdint.h]) ; do unset ac_cv_type_uint32_t unset ac_cv_type_uint64_t AC_CHECK_TYPE(uint32_t,[ac_cv_header_stdint_o=$i],continue,[#include <$i>]) AC_CHECK_TYPE(uint64_t,[and64="/uint64_t"],[and64=""],[#include<$i>]) m4_ifvaln([$1],[$1]) break break; done AC_MSG_CHECKING([for stdint uint32_t]) ]) ]) AC_DEFUN([AX_CHECK_HEADER_STDINT_U],[ AC_CACHE_CHECK([for stdint u_int32_t], [ac_cv_header_stdint_u],[ ac_cv_header_stdint_u="" # the BSD typedefs (sys/types.h) AC_MSG_RESULT([(..)]) for i in m4_ifval([$1],[$1],[sys/types.h inttypes.h sys/inttypes.h]) ; do unset ac_cv_type_u_int32_t unset ac_cv_type_u_int64_t AC_CHECK_TYPE(u_int32_t,[ac_cv_header_stdint_u=$i],continue,[#include <$i>]) AC_CHECK_TYPE(u_int64_t,[and64="/u_int64_t"],[and64=""],[#include<$i>]) m4_ifvaln([$1],[$1]) break break; done AC_MSG_CHECKING([for stdint u_int32_t]) ]) ]) AC_DEFUN([AX_CREATE_STDINT_H], [# ------ AX CREATE STDINT H ------------------------------------- AC_MSG_CHECKING([for stdint types]) ac_stdint_h=`echo ifelse($1, , _stdint.h, $1)` # try to shortcircuit - if the default include path of the compiler # can find a "stdint.h" header then we assume that all compilers can. AC_CACHE_VAL([ac_cv_header_stdint_t],[ old_CXXFLAGS="$CXXFLAGS" ; CXXFLAGS="" old_CPPFLAGS="$CPPFLAGS" ; CPPFLAGS="" old_CFLAGS="$CFLAGS" ; CFLAGS="" AC_TRY_COMPILE([#include ],[int_least32_t v = 0;], [ac_cv_stdint_result="(assuming C99 compatible system)" ac_cv_header_stdint_t="stdint.h"; ], [ac_cv_header_stdint_t=""]) CXXFLAGS="$old_CXXFLAGS" CPPFLAGS="$old_CPPFLAGS" CFLAGS="$old_CFLAGS" ]) v="... $ac_cv_header_stdint_h" if test "$ac_stdint_h" = "stdint.h" ; then AC_MSG_RESULT([(are you sure you want them in ./stdint.h?)]) elif test "$ac_stdint_h" = "inttypes.h" ; then AC_MSG_RESULT([(are you sure you want them in ./inttypes.h?)]) elif test "_$ac_cv_header_stdint_t" = "_" ; then AC_MSG_RESULT([(putting them into $ac_stdint_h)$v]) else ac_cv_header_stdint="$ac_cv_header_stdint_t" AC_MSG_RESULT([$ac_cv_header_stdint (shortcircuit)]) fi if test "_$ac_cv_header_stdint_t" = "_" ; then # can not shortcircuit.. dnl .....intro message done, now do a few system checks..... dnl btw, all old CHECK_TYPE macros do automatically "DEFINE" a type, dnl therefore we use the autoconf implementation detail CHECK_TYPE_NEW dnl instead that is triggered with 3 or more arguments (see types.m4) inttype_headers=`echo $2 | sed -e 's/,/ /g'` ac_cv_stdint_result="(no helpful system typedefs seen)" AX_CHECK_HEADER_STDINT_X(dnl stdint.h inttypes.h sys/inttypes.h $inttype_headers, ac_cv_stdint_result="(seen uintptr_t$and64 in $i)") if test "_$ac_cv_header_stdint_x" = "_" ; then AX_CHECK_HEADER_STDINT_O(dnl, inttypes.h sys/inttypes.h stdint.h $inttype_headers, ac_cv_stdint_result="(seen uint32_t$and64 in $i)") fi if test "_$ac_cv_header_stdint_x" = "_" ; then if test "_$ac_cv_header_stdint_o" = "_" ; then AX_CHECK_HEADER_STDINT_U(dnl, sys/types.h inttypes.h sys/inttypes.h $inttype_headers, ac_cv_stdint_result="(seen u_int32_t$and64 in $i)") fi fi dnl if there was no good C99 header file, do some typedef checks... if test "_$ac_cv_header_stdint_x" = "_" ; then AC_MSG_CHECKING([for stdint datatype model]) AC_MSG_RESULT([(..)]) AX_CHECK_DATA_MODEL fi if test "_$ac_cv_header_stdint_x" != "_" ; then ac_cv_header_stdint="$ac_cv_header_stdint_x" elif test "_$ac_cv_header_stdint_o" != "_" ; then ac_cv_header_stdint="$ac_cv_header_stdint_o" elif test "_$ac_cv_header_stdint_u" != "_" ; then ac_cv_header_stdint="$ac_cv_header_stdint_u" else ac_cv_header_stdint="stddef.h" fi AC_MSG_CHECKING([for extra inttypes in chosen header]) AC_MSG_RESULT([($ac_cv_header_stdint)]) dnl see if int_least and int_fast types are present in _this_ header. unset ac_cv_type_int_least32_t unset ac_cv_type_int_fast32_t AC_CHECK_TYPE(int_least32_t,,,[#include <$ac_cv_header_stdint>]) AC_CHECK_TYPE(int_fast32_t,,,[#include<$ac_cv_header_stdint>]) AC_CHECK_TYPE(intmax_t,,,[#include <$ac_cv_header_stdint>]) fi # shortcircut to system "stdint.h" # ------------------ PREPARE VARIABLES ------------------------------ if test "$GCC" = "yes" ; then ac_cv_stdint_message="using gnu compiler "`$CC --version | head -1` else ac_cv_stdint_message="using $CC" fi AC_MSG_RESULT([make use of $ac_cv_header_stdint in $ac_stdint_h dnl $ac_cv_stdint_result]) dnl ----------------------------------------------------------------- # ----------------- DONE inttypes.h checks START header ------------- AC_CONFIG_COMMANDS([$ac_stdint_h],[ AC_MSG_NOTICE(creating $ac_stdint_h : $_ac_stdint_h) ac_stdint=$tmp/_stdint.h echo "#ifndef" $_ac_stdint_h >$ac_stdint echo "#define" $_ac_stdint_h "1" >>$ac_stdint echo "#ifndef" _GENERATED_STDINT_H >>$ac_stdint echo "#define" _GENERATED_STDINT_H '"'$PACKAGE $VERSION'"' >>$ac_stdint echo "/* generated $ac_cv_stdint_message */" >>$ac_stdint if test "_$ac_cv_header_stdint_t" != "_" ; then echo "#define _STDINT_HAVE_STDINT_H" "1" >>$ac_stdint echo "#include " >>$ac_stdint echo "#endif" >>$ac_stdint echo "#endif" >>$ac_stdint else cat >>$ac_stdint < #else #include /* .................... configured part ............................ */ STDINT_EOF echo "/* whether we have a C99 compatible stdint header file */" >>$ac_stdint if test "_$ac_cv_header_stdint_x" != "_" ; then ac_header="$ac_cv_header_stdint_x" echo "#define _STDINT_HEADER_INTPTR" '"'"$ac_header"'"' >>$ac_stdint else echo "/* #undef _STDINT_HEADER_INTPTR */" >>$ac_stdint fi echo "/* whether we have a C96 compatible inttypes header file */" >>$ac_stdint if test "_$ac_cv_header_stdint_o" != "_" ; then ac_header="$ac_cv_header_stdint_o" echo "#define _STDINT_HEADER_UINT32" '"'"$ac_header"'"' >>$ac_stdint else echo "/* #undef _STDINT_HEADER_UINT32 */" >>$ac_stdint fi echo "/* whether we have a BSD compatible inet types header */" >>$ac_stdint if test "_$ac_cv_header_stdint_u" != "_" ; then ac_header="$ac_cv_header_stdint_u" echo "#define _STDINT_HEADER_U_INT32" '"'"$ac_header"'"' >>$ac_stdint else echo "/* #undef _STDINT_HEADER_U_INT32 */" >>$ac_stdint fi echo "" >>$ac_stdint if test "_$ac_header" != "_" ; then if test "$ac_header" != "stddef.h" ; then echo "#include <$ac_header>" >>$ac_stdint echo "" >>$ac_stdint fi fi echo "/* which 64bit typedef has been found */" >>$ac_stdint if test "$ac_cv_type_uint64_t" = "yes" ; then echo "#define _STDINT_HAVE_UINT64_T" "1" >>$ac_stdint else echo "/* #undef _STDINT_HAVE_UINT64_T */" >>$ac_stdint fi if test "$ac_cv_type_u_int64_t" = "yes" ; then echo "#define _STDINT_HAVE_U_INT64_T" "1" >>$ac_stdint else echo "/* #undef _STDINT_HAVE_U_INT64_T */" >>$ac_stdint fi echo "" >>$ac_stdint echo "/* which type model has been detected */" >>$ac_stdint if test "_$ac_cv_char_data_model" != "_" ; then echo "#define _STDINT_CHAR_MODEL" "$ac_cv_char_data_model" >>$ac_stdint echo "#define _STDINT_LONG_MODEL" "$ac_cv_long_data_model" >>$ac_stdint else echo "/* #undef _STDINT_CHAR_MODEL // skipped */" >>$ac_stdint echo "/* #undef _STDINT_LONG_MODEL // skipped */" >>$ac_stdint fi echo "" >>$ac_stdint echo "/* whether int_least types were detected */" >>$ac_stdint if test "$ac_cv_type_int_least32_t" = "yes"; then echo "#define _STDINT_HAVE_INT_LEAST32_T" "1" >>$ac_stdint else echo "/* #undef _STDINT_HAVE_INT_LEAST32_T */" >>$ac_stdint fi echo "/* whether int_fast types were detected */" >>$ac_stdint if test "$ac_cv_type_int_fast32_t" = "yes"; then echo "#define _STDINT_HAVE_INT_FAST32_T" "1" >>$ac_stdint else echo "/* #undef _STDINT_HAVE_INT_FAST32_T */" >>$ac_stdint fi echo "/* whether intmax_t type was detected */" >>$ac_stdint if test "$ac_cv_type_intmax_t" = "yes"; then echo "#define _STDINT_HAVE_INTMAX_T" "1" >>$ac_stdint else echo "/* #undef _STDINT_HAVE_INTMAX_T */" >>$ac_stdint fi echo "" >>$ac_stdint cat >>$ac_stdint <= 199901L #define _HAVE_UINT64_T #define _HAVE_LONGLONG_UINT64_T typedef long long int64_t; typedef unsigned long long uint64_t; #elif !defined __STRICT_ANSI__ #if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__ #define _HAVE_UINT64_T typedef __int64 int64_t; typedef unsigned __int64 uint64_t; #elif defined __GNUC__ || defined __MWERKS__ || defined __ELF__ /* note: all ELF-systems seem to have loff-support which needs 64-bit */ #if !defined _NO_LONGLONG #define _HAVE_UINT64_T #define _HAVE_LONGLONG_UINT64_T typedef long long int64_t; typedef unsigned long long uint64_t; #endif #elif defined __alpha || (defined __mips && defined _ABIN32) #if !defined _NO_LONGLONG typedef long int64_t; typedef unsigned long uint64_t; #endif /* compiler/cpu type to define int64_t */ #endif #endif #endif #if defined _STDINT_HAVE_U_INT_TYPES /* int8_t int16_t int32_t defined by inet code, redeclare the u_intXX types */ typedef u_int8_t uint8_t; typedef u_int16_t uint16_t; typedef u_int32_t uint32_t; /* glibc compatibility */ #ifndef __int8_t_defined #define __int8_t_defined #endif #endif #ifdef _STDINT_NEED_INT_MODEL_T /* we must guess all the basic types. Apart from byte-adressable system, */ /* there a few 32-bit-only dsp-systems that we guard with BYTE_MODEL 8-} */ /* (btw, those nibble-addressable systems are way off, or so we assume) */ dnl /* have a look at "64bit and data size neutrality" at */ dnl /* http://unix.org/version2/whatsnew/login_64bit.html */ dnl /* (the shorthand "ILP" types always have a "P" part) */ #if defined _STDINT_BYTE_MODEL #if _STDINT_LONG_MODEL+0 == 242 /* 2:4:2 = IP16 = a normal 16-bit system */ typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned long uint32_t; #ifndef __int8_t_defined #define __int8_t_defined typedef char int8_t; typedef short int16_t; typedef long int32_t; #endif #elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL == 444 /* 2:4:4 = LP32 = a 32-bit system derived from a 16-bit */ /* 4:4:4 = ILP32 = a normal 32-bit system */ typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned int uint32_t; #ifndef __int8_t_defined #define __int8_t_defined typedef char int8_t; typedef short int16_t; typedef int int32_t; #endif #elif _STDINT_LONG_MODEL+0 == 484 || _STDINT_LONG_MODEL+0 == 488 /* 4:8:4 = IP32 = a 32-bit system prepared for 64-bit */ /* 4:8:8 = LP64 = a normal 64-bit system */ typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned int uint32_t; #ifndef __int8_t_defined #define __int8_t_defined typedef char int8_t; typedef short int16_t; typedef int int32_t; #endif /* this system has a "long" of 64bit */ #ifndef _HAVE_UINT64_T #define _HAVE_UINT64_T typedef unsigned long uint64_t; typedef long int64_t; #endif #elif _STDINT_LONG_MODEL+0 == 448 /* LLP64 a 64-bit system derived from a 32-bit system */ typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned int uint32_t; #ifndef __int8_t_defined #define __int8_t_defined typedef char int8_t; typedef short int16_t; typedef int int32_t; #endif /* assuming the system has a "long long" */ #ifndef _HAVE_UINT64_T #define _HAVE_UINT64_T #define _HAVE_LONGLONG_UINT64_T typedef unsigned long long uint64_t; typedef long long int64_t; #endif #else #define _STDINT_NO_INT32_T #endif #else #define _STDINT_NO_INT8_T #define _STDINT_NO_INT32_T #endif #endif /* * quote from SunOS-5.8 sys/inttypes.h: * Use at your own risk. As of February 1996, the committee is squarely * behind the fixed sized types; the "least" and "fast" types are still being * discussed. The probability that the "fast" types may be removed before * the standard is finalized is high enough that they are not currently * implemented. */ #if defined _STDINT_NEED_INT_LEAST_T typedef int8_t int_least8_t; typedef int16_t int_least16_t; typedef int32_t int_least32_t; #ifdef _HAVE_UINT64_T typedef int64_t int_least64_t; #endif typedef uint8_t uint_least8_t; typedef uint16_t uint_least16_t; typedef uint32_t uint_least32_t; #ifdef _HAVE_UINT64_T typedef uint64_t uint_least64_t; #endif /* least types */ #endif #if defined _STDINT_NEED_INT_FAST_T typedef int8_t int_fast8_t; typedef int int_fast16_t; typedef int32_t int_fast32_t; #ifdef _HAVE_UINT64_T typedef int64_t int_fast64_t; #endif typedef uint8_t uint_fast8_t; typedef unsigned uint_fast16_t; typedef uint32_t uint_fast32_t; #ifdef _HAVE_UINT64_T typedef uint64_t uint_fast64_t; #endif /* fast types */ #endif #ifdef _STDINT_NEED_INTMAX_T #ifdef _HAVE_UINT64_T typedef int64_t intmax_t; typedef uint64_t uintmax_t; #else typedef long intmax_t; typedef unsigned long uintmax_t; #endif #endif #ifdef _STDINT_NEED_INTPTR_T #ifndef __intptr_t_defined #define __intptr_t_defined /* we encourage using "long" to store pointer values, never use "int" ! */ #if _STDINT_LONG_MODEL+0 == 242 || _STDINT_LONG_MODEL+0 == 484 typedef unsinged int uintptr_t; typedef int intptr_t; #elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL+0 == 444 typedef unsigned long uintptr_t; typedef long intptr_t; #elif _STDINT_LONG_MODEL+0 == 448 && defined _HAVE_UINT64_T typedef uint64_t uintptr_t; typedef int64_t intptr_t; #else /* matches typical system types ILP32 and LP64 - but not IP16 or LLP64 */ typedef unsigned long uintptr_t; typedef long intptr_t; #endif #endif #endif /* The ISO C99 standard specifies that in C++ implementations these should only be defined if explicitly requested. */ #if !defined __cplusplus || defined __STDC_CONSTANT_MACROS #ifndef UINT32_C /* Signed. */ # define INT8_C(c) c # define INT16_C(c) c # define INT32_C(c) c # ifdef _HAVE_LONGLONG_UINT64_T # define INT64_C(c) c ## L # else # define INT64_C(c) c ## LL # endif /* Unsigned. */ # define UINT8_C(c) c ## U # define UINT16_C(c) c ## U # define UINT32_C(c) c ## U # ifdef _HAVE_LONGLONG_UINT64_T # define UINT64_C(c) c ## UL # else # define UINT64_C(c) c ## ULL # endif /* Maximal type. */ # ifdef _HAVE_LONGLONG_UINT64_T # define INTMAX_C(c) c ## L # define UINTMAX_C(c) c ## UL # else # define INTMAX_C(c) c ## LL # define UINTMAX_C(c) c ## ULL # endif /* literalnumbers */ #endif #endif /* These limits are merily those of a two complement byte-oriented system */ /* Minimum of signed integral types. */ # define INT8_MIN (-128) # define INT16_MIN (-32767-1) # define INT32_MIN (-2147483647-1) # define INT64_MIN (-__INT64_C(9223372036854775807)-1) /* Maximum of signed integral types. */ # define INT8_MAX (127) # define INT16_MAX (32767) # define INT32_MAX (2147483647) # define INT64_MAX (__INT64_C(9223372036854775807)) /* Maximum of unsigned integral types. */ # define UINT8_MAX (255) # define UINT16_MAX (65535) # define UINT32_MAX (4294967295U) # define UINT64_MAX (__UINT64_C(18446744073709551615)) /* Minimum of signed integral types having a minimum size. */ # define INT_LEAST8_MIN INT8_MIN # define INT_LEAST16_MIN INT16_MIN # define INT_LEAST32_MIN INT32_MIN # define INT_LEAST64_MIN INT64_MIN /* Maximum of signed integral types having a minimum size. */ # define INT_LEAST8_MAX INT8_MAX # define INT_LEAST16_MAX INT16_MAX # define INT_LEAST32_MAX INT32_MAX # define INT_LEAST64_MAX INT64_MAX /* Maximum of unsigned integral types having a minimum size. */ # define UINT_LEAST8_MAX UINT8_MAX # define UINT_LEAST16_MAX UINT16_MAX # define UINT_LEAST32_MAX UINT32_MAX # define UINT_LEAST64_MAX UINT64_MAX /* shortcircuit*/ #endif /* once */ #endif #endif STDINT_EOF fi if cmp -s $ac_stdint_h $ac_stdint 2>/dev/null; then AC_MSG_NOTICE([$ac_stdint_h is unchanged]) else ac_dir=`AS_DIRNAME(["$ac_stdint_h"])` AS_MKDIR_P(["$ac_dir"]) rm -f $ac_stdint_h mv $ac_stdint $ac_stdint_h fi ],[# variables for create stdint.h replacement PACKAGE="$PACKAGE" VERSION="$VERSION" ac_stdint_h="$ac_stdint_h" _ac_stdint_h=AS_TR_CPP(_$PACKAGE-$ac_stdint_h) ac_cv_stdint_message="$ac_cv_stdint_message" ac_cv_header_stdint_t="$ac_cv_header_stdint_t" ac_cv_header_stdint_x="$ac_cv_header_stdint_x" ac_cv_header_stdint_o="$ac_cv_header_stdint_o" ac_cv_header_stdint_u="$ac_cv_header_stdint_u" ac_cv_type_uint64_t="$ac_cv_type_uint64_t" ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t" ac_cv_char_data_model="$ac_cv_char_data_model" ac_cv_long_data_model="$ac_cv_long_data_model" ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t" ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t" ac_cv_type_intmax_t="$ac_cv_type_intmax_t" ]) ])