-dnl See whether we can include both string.h and strings.h.
-AC_DEFUN(gcc_AC_HEADER_STRING,
-[AC_CACHE_CHECK([whether string.h and strings.h may both be included],
- gcc_cv_header_string,
-[AC_TRY_COMPILE([#include <string.h>
-#include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
-if test $gcc_cv_header_string = yes; then
- AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
-fi
-])
-
-dnl See whether we need a declaration for a function.
-dnl The result is highly dependent on the INCLUDES passed in, so make sure
-dnl to use a different cache variable name in this macro if it is invoked
-dnl in a different context somewhere else.
-dnl gcc_AC_CHECK_DECL(SYMBOL,
-dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
-AC_DEFUN(gcc_AC_CHECK_DECL,
-[AC_MSG_CHECKING([whether $1 is declared])
-AC_CACHE_VAL(gcc_cv_have_decl_$1,
-[AC_TRY_COMPILE([$4],
-[#ifndef $1
-char *(*pfn) = (char *(*)) $1 ;
-#endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
-if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
- AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
-else
- AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
-fi
-])dnl
-
-dnl Check multiple functions to see whether each needs a declaration.
-dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
-dnl gcc_AC_CHECK_DECLS(SYMBOLS,
-dnl [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
-AC_DEFUN(gcc_AC_CHECK_DECLS,
-[for ac_func in $1
-do
-changequote(, )dnl
- ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-changequote([, ])dnl
-gcc_AC_CHECK_DECL($ac_func,
- [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
- [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
- $4
-)
-done
-dnl Automatically generate config.h entries via autoheader.
-if test x = y ; then
- patsubst(translit([$1], [a-z], [A-Z]), [\w+],
- AC_DEFINE([HAVE_DECL_\&], 1,
- [Define to 1 if we found this declaration otherwise define to 0.]))dnl
-fi
-])
-
-dnl Check if we have vprintf and possibly _doprnt.
-dnl Note autoconf checks for vprintf even though we care about vfprintf.
-AC_DEFUN(gcc_AC_FUNC_VFPRINTF_DOPRNT,
-[AC_FUNC_VPRINTF
-vfprintf=
-doprint=
-if test $ac_cv_func_vprintf != yes ; then
- vfprintf=vfprintf.o
- if test $ac_cv_func__doprnt != yes ; then
- doprint=doprint.o
- fi
-fi
-AC_SUBST(vfprintf)
-AC_SUBST(doprint)
-])
-
-dnl See if the printf functions in libc support %p in format strings.
-AC_DEFUN(gcc_AC_FUNC_PRINTF_PTR,
-[AC_CACHE_CHECK(whether the printf functions support %p,
- gcc_cv_func_printf_ptr,
-[AC_TRY_RUN([#include <stdio.h>
-
-int main()
-{
- char buf[64];
- char *p = buf, *q = NULL;
- sprintf(buf, "%p", p);
- sscanf(buf, "%p", &q);
- return (p != q);
-}], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
- gcc_cv_func_printf_ptr=no)
-rm -f core core.* *.core])
-if test $gcc_cv_func_printf_ptr = yes ; then
- AC_DEFINE(HAVE_PRINTF_PTR, 1, [Define if printf supports "%p".])
-fi
-])
-
-dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
-AC_DEFUN(gcc_AC_PROG_LN_S,
-[AC_MSG_CHECKING(whether ln -s works)
-AC_CACHE_VAL(gcc_cv_prog_LN_S,
-[rm -f conftestdata_t
-echo >conftestdata_f
-if ln -s conftestdata_f conftestdata_t 2>/dev/null
-then
- gcc_cv_prog_LN_S="ln -s"
-else
- if ln conftestdata_f conftestdata_t 2>/dev/null
- then
- gcc_cv_prog_LN_S=ln
- else
- gcc_cv_prog_LN_S=cp
- fi
-fi
-rm -f conftestdata_f conftestdata_t
-])dnl
-LN_S="$gcc_cv_prog_LN_S"
-if test "$gcc_cv_prog_LN_S" = "ln -s"; then
- AC_MSG_RESULT(yes)
-else
- if test "$gcc_cv_prog_LN_S" = "ln"; then
- AC_MSG_RESULT([no, using ln])
- else
- AC_MSG_RESULT([no, and neither does ln, so using cp])
- fi
-fi
-AC_SUBST(LN_S)dnl
-])
-
-dnl See if hard links work and if not, try to substitute either symbolic links or simple copy.
-AC_DEFUN(gcc_AC_PROG_LN,
-[AC_MSG_CHECKING(whether ln works)
-AC_CACHE_VAL(gcc_cv_prog_LN,
-[rm -f conftestdata_t
-echo >conftestdata_f
-if ln conftestdata_f conftestdata_t 2>/dev/null
-then
- gcc_cv_prog_LN="ln"
-else
- if ln -s conftestdata_f conftestdata_t 2>/dev/null
- then
- gcc_cv_prog_LN="ln -s"
- else
- gcc_cv_prog_LN=cp
- fi
-fi
-rm -f conftestdata_f conftestdata_t
-])dnl
-LN="$gcc_cv_prog_LN"
-if test "$gcc_cv_prog_LN" = "ln"; then
- AC_MSG_RESULT(yes)
-else
- if test "$gcc_cv_prog_LN" = "ln -s"; then
- AC_MSG_RESULT([no, using ln -s])
- else
- AC_MSG_RESULT([no, and neither does ln -s, so using cp])
- fi
-fi
-AC_SUBST(LN)dnl
-])
-
-dnl See whether the stage1 host compiler accepts the volatile keyword.
-AC_DEFUN(gcc_AC_C_VOLATILE,
-[AC_CACHE_CHECK([for volatile], gcc_cv_c_volatile,
-[AC_TRY_COMPILE(, [volatile int foo;],
- gcc_cv_c_volatile=yes, gcc_cv_c_volatile=no)])
-if test $gcc_cv_c_volatile = yes ; then
- AC_DEFINE(HAVE_VOLATILE, 1, [Define if your compiler understands volatile.])
-fi
-])
-
-dnl Check whether long double is supported. This differs from the
-dnl built-in autoconf test in that it works for cross compiles.
-AC_DEFUN(gcc_AC_C_LONG_DOUBLE,
-[AC_CACHE_CHECK(for long double, gcc_cv_c_long_double,
-[if test "$GCC" = yes; then
- gcc_cv_c_long_double=yes
-else
-AC_TRY_COMPILE(,
-[/* The Stardent Vistra knows sizeof(long double), but does not support it. */
-long double foo = 0.0;
-/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
-switch (0) case 0: case (sizeof(long double) >= sizeof(double)):;],
-gcc_cv_c_long_double=yes, gcc_cv_c_long_double=no)
-fi])
-if test $gcc_cv_c_long_double = yes; then
- AC_DEFINE(HAVE_LONG_DOUBLE)
-fi
-])