-dnl Check for ISO/IEC 9899:1999 "C99" support.
-dnl
-dnl GLIBCPP_ENABLE_C99
-dnl --enable-c99 defines _GLIBCPP_USE_C99
-dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
-dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If omitted, it
-dnl defaults to `no'.
-dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
-dnl
-dnl GLIBCPP_ENABLE_C99
-AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
- define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
-
- AC_ARG_ENABLE(c99,
- changequote(<<, >>)dnl
- <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
- changequote([, ])dnl
- [case "$enableval" in
- yes) enable_c99=yes ;;
- no) enable_c99=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
- esac],
- enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
-
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- # Check for the existence of <math.h> functions used if C99 is enabled.
- ac_c99_math=yes;
- AC_MSG_CHECKING([for ISO C99 support in <math.h>])
- AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [islessgreater(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [isunordered(0.0,0.0);],, [ac_c99_math=no])
- AC_MSG_RESULT($ac_c99_math)
-
- # Check for the existence in <stdio.h> of vscanf, et. al.
- ac_c99_stdio=yes;
- AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
- AC_TRY_COMPILE([#include <stdio.h>],
- [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vfscanf(stderr, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vscanf("%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vsnprintf(fmt, 0, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vsscanf(fmt, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_MSG_RESULT($ac_c99_stdio)
-
- # Check for the existence in <stdlib.h> of lldiv_t, et. al.
- ac_c99_stdlib=yes;
- AC_MSG_CHECKING([for lldiv_t declaration])
- AC_CACHE_VAL(ac_c99_lldiv_t, [
- AC_TRY_COMPILE([#include <stdlib.h>],
- [ lldiv_t mydivt;],
- [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
- ])
- AC_MSG_RESULT($ac_c99_lldiv_t)
-
- AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
- if test x"$ac_c99_lldiv_t" = x"no"; then
- ac_c99_stdlib=no;
- fi;
- AC_MSG_RESULT($ac_c99_stdlib)
-
- # Check for the existence of <wchar.h> functions used if C99 is enabled.
- # XXX the wchar.h checks should be rolled into the general C99 bits.
- ac_c99_wchar=yes;
- AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
- AC_MSG_RESULT($ac_c99_wchar)
-
- AC_MSG_CHECKING([for enabled ISO C99 support])
- if test x"$ac_c99_math" = x"no" ||
- test x"$ac_c99_stdio" = x"no" ||
- test x"$ac_c99_stdlib" = x"no" ||
- test x"$ac_c99_wchar" = x"no"; then
- enable_c99=no;
- fi;
- AC_MSG_RESULT($enable_c99)
-
- # Option parsed, now set things appropriately
- if test x"$enable_c99" = x"yes"; then
- AC_DEFINE(_GLIBCPP_USE_C99)
- fi
-
- AC_LANG_RESTORE
-])
-
-
-dnl
-dnl Check for template specializations for the 'long long' type extension.
-dnl The result determines only whether 'long long' I/O is enabled; things
-dnl like numeric_limits<> specializations are always available.
-dnl
-dnl GLIBCPP_ENABLE_LONG_LONG
-dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
-dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
-dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If omitted, it
-dnl defaults to `no'.
-dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
-dnl
-dnl GLIBCPP_ENABLE_LONG_LONG
-AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
- define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
-
- AC_ARG_ENABLE(long-long,
- changequote(<<, >>)dnl
- <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
- changequote([, ])dnl
- [case "$enableval" in
- yes) enable_long_long=yes ;;
- no) enable_long_long=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
- esac],
- enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
-
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- AC_MSG_CHECKING([for enabled long long I/O support])
- # iostreams require strtoll, strtoull to compile
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])