222 lines
6.0 KiB
Plaintext
222 lines
6.0 KiB
Plaintext
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dnl See whether we need a declaration for a function.
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dnl GCC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES])
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AC_DEFUN(GCC_NEED_DECLARATION,
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[AC_MSG_CHECKING([whether $1 must be declared])
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AC_CACHE_VAL(gcc_cv_decl_needed_$1,
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[AC_TRY_COMPILE([
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#include <stdio.h>
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef HAVE_RINDEX
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#define rindex strrchr
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#endif
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#ifndef HAVE_INDEX
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#define index strchr
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#endif
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$2],
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[char *(*pfn) = (char *(*)) $1],
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eval "gcc_cv_decl_needed_$1=no", eval "gcc_cv_decl_needed_$1=yes")])
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if eval "test \"`echo '$gcc_cv_decl_needed_'$1`\" = yes"; then
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AC_MSG_RESULT(yes)
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gcc_tr_decl=NEED_DECLARATION_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
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AC_DEFINE_UNQUOTED($gcc_tr_decl)
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else
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AC_MSG_RESULT(no)
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fi
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])dnl
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dnl Check multiple functions to see whether each needs a declaration.
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dnl GCC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES])
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AC_DEFUN(GCC_NEED_DECLARATIONS,
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[for ac_func in $1
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do
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GCC_NEED_DECLARATION($ac_func, $2)
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done
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])
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dnl Check if we have vprintf and possibly _doprnt.
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dnl Note autoconf checks for vprintf even though we care about vfprintf.
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AC_DEFUN(GCC_FUNC_VFPRINTF_DOPRNT,
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[AC_FUNC_VPRINTF
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vfprintf=
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doprint=
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if test $ac_cv_func_vprintf != yes ; then
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vfprintf=vfprintf.o
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if test $ac_cv_func__doprnt != yes ; then
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doprint=doprint.o
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fi
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fi
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AC_SUBST(vfprintf)
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AC_SUBST(doprint)
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])
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dnl See if the printf functions in libc support %p in format strings.
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AC_DEFUN(GCC_FUNC_PRINTF_PTR,
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[AC_CACHE_CHECK(whether the printf functions support %p,
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gcc_cv_func_printf_ptr,
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[AC_TRY_RUN([#include <stdio.h>
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main()
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{
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char buf[64];
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char *p = buf, *q = NULL;
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sprintf(buf, "%p", p);
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sscanf(buf, "%p", &q);
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exit (p != q);
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}], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
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gcc_cv_func_printf_ptr=no)
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rm -f core core.* *.core])
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if test $gcc_cv_func_printf_ptr = yes ; then
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AC_DEFINE(HAVE_PRINTF_PTR)
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fi
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])
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dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
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AC_DEFUN(GCC_PROG_LN_S,
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[AC_MSG_CHECKING(whether ln -s works)
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AC_CACHE_VAL(gcc_cv_prog_LN_S,
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[rm -f conftestdata_t
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echo >conftestdata_f
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if ln -s conftestdata_f conftestdata_t 2>/dev/null
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then
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gcc_cv_prog_LN_S="ln -s"
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else
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if ln conftestdata_f conftestdata_t 2>/dev/null
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then
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gcc_cv_prog_LN_S=ln
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else
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gcc_cv_prog_LN_S=cp
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fi
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fi
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rm -f conftestdata_f conftestdata_t
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])dnl
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LN_S="$gcc_cv_prog_LN_S"
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if test "$gcc_cv_prog_LN_S" = "ln -s"; then
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AC_MSG_RESULT(yes)
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else
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if test "$gcc_cv_prog_LN_S" = "ln"; then
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AC_MSG_RESULT([no, using ln])
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else
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AC_MSG_RESULT([no, and neither does ln, so using cp])
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fi
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fi
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AC_SUBST(LN_S)dnl
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])
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dnl See if hard links work and if not, try to substitute either symbolic links or simple copy.
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AC_DEFUN(GCC_PROG_LN,
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[AC_MSG_CHECKING(whether ln works)
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AC_CACHE_VAL(gcc_cv_prog_LN,
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[rm -f conftestdata_t
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echo >conftestdata_f
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if ln conftestdata_f conftestdata_t 2>/dev/null
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then
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gcc_cv_prog_LN="ln"
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else
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if ln -s conftestdata_f conftestdata_t 2>/dev/null
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then
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gcc_cv_prog_LN="ln -s"
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else
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gcc_cv_prog_LN=cp
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fi
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fi
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rm -f conftestdata_f conftestdata_t
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])dnl
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LN="$gcc_cv_prog_LN"
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if test "$gcc_cv_prog_LN" = "ln"; then
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AC_MSG_RESULT(yes)
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else
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if test "$gcc_cv_prog_LN" = "ln -s"; then
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AC_MSG_RESULT([no, using ln -s])
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else
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AC_MSG_RESULT([no, and neither does ln -s, so using cp])
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fi
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fi
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AC_SUBST(LN)dnl
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])
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dnl See whether the stage1 host compiler accepts the volatile keyword.
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AC_DEFUN(GCC_C_VOLATILE,
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[AC_CACHE_CHECK([for volatile], gcc_cv_c_volatile,
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[AC_TRY_COMPILE(, [volatile int foo;],
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gcc_cv_c_volatile=yes, gcc_cv_c_volatile=no)])
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if test $gcc_cv_c_volatile = yes ; then
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AC_DEFINE(HAVE_VOLATILE)
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fi
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])
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AC_DEFUN(EGCS_PROG_INSTALL,
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[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
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# Find a good install program. We prefer a C program (faster),
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# so one script is as good as another. But avoid the broken or
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# incompatible versions:
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# SysV /etc/install, /usr/sbin/install
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# SunOS /usr/etc/install
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# IRIX /sbin/install
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# AIX /bin/install
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# AFS /usr/afsws/bin/install, which mishandles nonexistent args
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# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
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# ./install, which can be erroneously created by make from ./install.sh.
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AC_MSG_CHECKING(for a BSD compatible install)
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if test -z "$INSTALL"; then
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AC_CACHE_VAL(ac_cv_path_install,
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[ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
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for ac_dir in $PATH; do
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# Account for people who put trailing slashes in PATH elements.
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case "$ac_dir/" in
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/|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
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*)
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# OSF1 and SCO ODT 3.0 have their own names for install.
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for ac_prog in ginstall scoinst install; do
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if test -f $ac_dir/$ac_prog; then
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if test $ac_prog = install &&
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grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
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# AIX install. It has an incompatible calling convention.
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# OSF/1 installbsd also uses dspmsg, but is usable.
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:
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else
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ac_cv_path_install="$ac_dir/$ac_prog -c"
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break 2
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fi
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fi
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done
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;;
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esac
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done
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IFS="$ac_save_IFS"
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])dnl
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if test "${ac_cv_path_install+set}" = set; then
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INSTALL="$ac_cv_path_install"
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else
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# As a last resort, use the slow shell script. We don't cache a
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# path for INSTALL within a source directory, because that will
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# break other packages using the cache if that directory is
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# removed, or if the path is relative.
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INSTALL="$ac_install_sh"
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fi
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fi
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dnl We do special magic for INSTALL instead of AC_SUBST, to get
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dnl relative paths right.
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AC_MSG_RESULT($INSTALL)
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AC_SUBST(INSTALL)dnl
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# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
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# It thinks the first close brace ends the variable substitution.
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test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
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AC_SUBST(INSTALL_PROGRAM)dnl
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test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
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AC_SUBST(INSTALL_DATA)dnl
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])
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