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 #include ], , gcc_cv_header_string=yes, gcc_cv_header_string=no)]) if test $gcc_cv_header_string = yes; then AC_DEFINE(STRING_WITH_STRINGS) fi ]) dnl See whether we need a declaration for a function. dnl gcc_AC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES]) AC_DEFUN(gcc_AC_NEED_DECLARATION, [AC_MSG_CHECKING([whether $1 must be declared]) AC_CACHE_VAL(gcc_cv_decl_needed_$1, [AC_TRY_COMPILE([ #include #ifdef STRING_WITH_STRINGS # include # include #else # ifdef HAVE_STRING_H # include # else # ifdef HAVE_STRINGS_H # include # endif # endif #endif #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_UNISTD_H #include #endif #ifndef HAVE_RINDEX #ifndef rindex #define rindex strrchr #endif #endif #ifndef HAVE_INDEX #ifndef index #define index strchr #endif #endif $2], [char *(*pfn) = (char *(*)) $1], eval "gcc_cv_decl_needed_$1=no", eval "gcc_cv_decl_needed_$1=yes")]) if eval "test \"`echo '$gcc_cv_decl_needed_'$1`\" = yes"; then AC_MSG_RESULT(yes) gcc_tr_decl=NEED_DECLARATION_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` AC_DEFINE_UNQUOTED($gcc_tr_decl) else AC_MSG_RESULT(no) fi ])dnl dnl Check multiple functions to see whether each needs a declaration. dnl gcc_AC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES]) AC_DEFUN(gcc_AC_NEED_DECLARATIONS, [for ac_func in $1 do gcc_AC_NEED_DECLARATION($ac_func, $2) done ]) 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 main() { char buf[64]; char *p = buf, *q = NULL; sprintf(buf, "%p", p); sscanf(buf, "%p", &q); exit (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 $gcc_cv_func_printf_ptr = yes ; then AC_DEFINE(HAVE_PRINTF_PTR) fi ]) dnl See if symbolic links work and if not, try to substitute either hard links or simple copy. AC_DEFUN(gcc_AC_PROG_LN_S, [AC_MSG_CHECKING(whether ln -s works) AC_CACHE_VAL(gcc_cv_prog_LN_S, [rm -f conftestdata_t echo >conftestdata_f if ln -s conftestdata_f conftestdata_t 2>/dev/null then gcc_cv_prog_LN_S="ln -s" else if ln conftestdata_f conftestdata_t 2>/dev/null then gcc_cv_prog_LN_S=ln else gcc_cv_prog_LN_S=cp fi fi rm -f conftestdata_f conftestdata_t ])dnl LN_S="$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 $gcc_cv_c_volatile = yes ; then AC_DEFINE(HAVE_VOLATILE) fi ]) dnl Check whether long double is supported. This differs from the dnl built-in autoconf test in that it works for cross compiles. AC_DEFUN(gcc_AC_C_LONG_DOUBLE, [AC_CACHE_CHECK(for long double, gcc_cv_c_long_double, [if test "$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 ]) dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead dnl of the usual 2. AC_DEFUN(gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG, [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg, [AC_TRY_COMPILE([ #include #ifdef HAVE_SYS_STAT_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_DIRECT_H # include #endif], [mkdir ("foo", 0);], gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)]) if test $gcc_cv_mkdir_takes_one_arg = yes ; then AC_DEFINE(MKDIR_TAKES_ONE_ARG) fi ]) AC_DEFUN(gcc_AC_PROG_INSTALL, [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl # Find a good install program. We prefer a C program (faster), # so one script is as good as another. But avoid the broken or # incompatible versions: # SysV /etc/install, /usr/sbin/install # SunOS /usr/etc/install # IRIX /sbin/install # AIX /bin/install # AFS /usr/afsws/bin/install, which mishandles nonexistent args # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" # ./install, which can be erroneously created by make from ./install.sh. AC_MSG_CHECKING(for a BSD compatible install) if test -z "$INSTALL"; then AC_CACHE_VAL(ac_cv_path_install, [ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:" for ac_dir in $PATH; do # Account for people who put trailing slashes in PATH elements. case "$ac_dir/" in /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; *) # OSF1 and SCO ODT 3.0 have their own names for install. for ac_prog in ginstall scoinst install; do if test -f $ac_dir/$ac_prog; then if test $ac_prog = install && grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX install. It has an incompatible calling convention. # OSF/1 installbsd also uses dspmsg, but is usable. : else ac_cv_path_install="$ac_dir/$ac_prog -c" break 2 fi fi done ;; esac done IFS="$ac_save_IFS" ])dnl if test "${ac_cv_path_install+set}" = set; then INSTALL="$ac_cv_path_install" else # As a last resort, use the slow shell script. We don't cache a # path for INSTALL within a source directory, because that will # break other packages using the cache if that directory is # removed, or if the path is relative. INSTALL="$ac_install_sh" fi fi dnl We do special magic for INSTALL instead of AC_SUBST, to get dnl relative paths right. AC_MSG_RESULT($INSTALL) AC_SUBST(INSTALL)dnl # Use test -z because SunOS4 sh mishandles braces in ${var-val}. # It thinks the first close brace ends the variable substitution. test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' AC_SUBST(INSTALL_PROGRAM)dnl test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' AC_SUBST(INSTALL_DATA)dnl ]) #serial 1 dnl This test replaces the one in autoconf. dnl Currently this macro should have the same name as the autoconf macro dnl because gettext's gettext.m4 (distributed in the automake package) dnl still uses it. Otherwise, the use in gettext.m4 makes autoheader dnl give these diagnostics: dnl configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX dnl configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX undefine([AC_ISC_POSIX]) AC_DEFUN(AC_ISC_POSIX, [ dnl This test replaces the obsolescent AC_ISC_POSIX kludge. AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"]) ] ) # Macro to add for using GNU gettext. # Ulrich Drepper , 1995. # # This file can be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 5 AC_DEFUN(AM_WITH_NLS, [AC_MSG_CHECKING([whether NLS is requested]) dnl Default is enabled NLS AC_ARG_ENABLE(nls, [ --disable-nls do not use Native Language Support], USE_NLS=$enableval, USE_NLS=yes) AC_MSG_RESULT($USE_NLS) AC_SUBST(USE_NLS) USE_INCLUDED_LIBINTL=no dnl If we use NLS figure out what method if test "$USE_NLS" = "yes"; then AC_DEFINE(ENABLE_NLS) AC_MSG_CHECKING([whether included gettext is requested]) AC_ARG_WITH(included-gettext, [ --with-included-gettext use the GNU gettext library included here], nls_cv_force_use_gnu_gettext=$withval, nls_cv_force_use_gnu_gettext=no) AC_MSG_RESULT($nls_cv_force_use_gnu_gettext) nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" if test "$nls_cv_force_use_gnu_gettext" != "yes"; then dnl User does not insist on using GNU NLS library. Figure out what dnl to use. If gettext or catgets are available (in this order) we dnl use this. Else we have to fall back to GNU NLS library. dnl catgets is only used if permitted by option --with-catgets. nls_cv_header_intl= nls_cv_header_libgt= CATOBJEXT=NONE AC_CHECK_HEADER(libintl.h, [AC_CACHE_CHECK([for gettext in libc], gt_cv_func_gettext_libc, [AC_TRY_LINK([#include ], [return (int) gettext ("")], gt_cv_func_gettext_libc=yes, gt_cv_func_gettext_libc=no)]) if test "$gt_cv_func_gettext_libc" != "yes"; then AC_CHECK_LIB(intl, bindtextdomain, [AC_CACHE_CHECK([for gettext in libintl], gt_cv_func_gettext_libintl, [AC_CHECK_LIB(intl, gettext, gt_cv_func_gettext_libintl=yes, gt_cv_func_gettext_libintl=no)], gt_cv_func_gettext_libintl=no)]) fi if test "$gt_cv_func_gettext_libc" = "yes" \ || test "$gt_cv_func_gettext_libintl" = "yes"; then AC_DEFINE(HAVE_GETTEXT) AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl if test "$MSGFMT" != "no"; then AC_CHECK_FUNCS(dcgettext) AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT) AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) AC_TRY_LINK(, [extern int _nl_msg_cat_cntr; return _nl_msg_cat_cntr], [CATOBJEXT=.gmo DATADIRNAME=share], [CATOBJEXT=.mo DATADIRNAME=lib]) INSTOBJEXT=.mo fi fi ]) if test "$CATOBJEXT" = "NONE"; then AC_MSG_CHECKING([whether catgets can be used]) AC_ARG_WITH(catgets, [ --with-catgets use catgets functions if available], nls_cv_use_catgets=$withval, nls_cv_use_catgets=no) AC_MSG_RESULT($nls_cv_use_catgets) if test "$nls_cv_use_catgets" = "yes"; then dnl No gettext in C library. Try catgets next. AC_CHECK_LIB(i, main) AC_CHECK_FUNC(catgets, [AC_DEFINE(HAVE_CATGETS) INTLOBJS="\$(CATOBJS)" AC_PATH_PROG(GENCAT, gencat, no)dnl if test "$GENCAT" != "no"; then AC_PATH_PROG(GMSGFMT, gmsgfmt, no) if test "$GMSGFMT" = "no"; then AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no) fi AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) USE_INCLUDED_LIBINTL=yes CATOBJEXT=.cat INSTOBJEXT=.cat DATADIRNAME=lib INTLDEPS='$(top_builddir)/intl/libintl.a' INTLLIBS=$INTLDEPS LIBS=`echo $LIBS | sed -e 's/-lintl//'` nls_cv_header_intl=intl/libintl.h nls_cv_header_libgt=intl/libgettext.h fi]) fi fi if test "$CATOBJEXT" = "NONE"; then dnl Neither gettext nor catgets in included in the C library. dnl Fall back on GNU gettext library. nls_cv_use_gnu_gettext=yes fi fi if test "$nls_cv_use_gnu_gettext" = "yes"; then dnl Mark actions used to generate GNU NLS library. INTLOBJS="\$(GETTOBJS)" AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt) AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT) AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) AC_SUBST(MSGFMT) USE_INCLUDED_LIBINTL=yes CATOBJEXT=.gmo INSTOBJEXT=.mo DATADIRNAME=share INTLDEPS='$(top_builddir)/intl/libintl.a' INTLLIBS=$INTLDEPS LIBS=`echo $LIBS | sed -e 's/-lintl//'` nls_cv_header_intl=intl/libintl.h nls_cv_header_libgt=intl/libgettext.h fi dnl Test whether we really found GNU xgettext. if test "$XGETTEXT" != ":"; then dnl If it is no GNU xgettext we define it as : so that the dnl Makefiles still can work. if $XGETTEXT --omit-header /dev/null 2> /dev/null; then : ; else AC_MSG_RESULT( [found xgettext program is not GNU xgettext; ignore it]) XGETTEXT=":" fi fi # We need to process the po/ directory. POSUB=po else DATADIRNAME=share nls_cv_header_intl=intl/libintl.h nls_cv_header_libgt=intl/libgettext.h fi AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl) AC_OUTPUT_COMMANDS( [case "$CONFIG_FILES" in *po/Makefile.in*) sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile esac]) # If this is used in GNU gettext we have to set USE_NLS to `yes' # because some of the sources are only built for this goal. if test "$PACKAGE" = gettext; then USE_NLS=yes USE_INCLUDED_LIBINTL=yes fi dnl These rules are solely for the distribution goal. While doing this dnl we only have to keep exactly one list of the available catalogs dnl in configure.in. for lang in $ALL_LINGUAS; do GMOFILES="$GMOFILES $lang.gmo" POFILES="$POFILES $lang.po" done dnl Make all variables we use known to autoconf. AC_SUBST(USE_INCLUDED_LIBINTL) AC_SUBST(CATALOGS) AC_SUBST(CATOBJEXT) AC_SUBST(DATADIRNAME) AC_SUBST(GMOFILES) AC_SUBST(INSTOBJEXT) AC_SUBST(INTLDEPS) AC_SUBST(INTLLIBS) AC_SUBST(INTLOBJS) AC_SUBST(POFILES) AC_SUBST(POSUB) ]) AC_DEFUN(AM_GNU_GETTEXT, [AC_REQUIRE([AC_PROG_MAKE_SET])dnl AC_REQUIRE([AC_PROG_CC])dnl AC_REQUIRE([AC_PROG_RANLIB])dnl AC_REQUIRE([AC_ISC_POSIX])dnl AC_REQUIRE([AC_HEADER_STDC])dnl AC_REQUIRE([AC_C_CONST])dnl AC_REQUIRE([AC_C_INLINE])dnl AC_REQUIRE([AC_TYPE_OFF_T])dnl AC_REQUIRE([AC_TYPE_SIZE_T])dnl AC_REQUIRE([AC_FUNC_ALLOCA])dnl AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \ unistd.h sys/param.h]) AC_CHECK_FUNCS([getcwd munmap putenv setenv setlocale strchr strcasecmp \ strdup __argz_count __argz_stringify __argz_next]) if test "${ac_cv_func_stpcpy+set}" != "set"; then AC_CHECK_FUNCS(stpcpy) fi if test "${ac_cv_func_stpcpy}" = "yes"; then AC_DEFINE(HAVE_STPCPY) fi AM_LC_MESSAGES AM_WITH_NLS if test "x$CATOBJEXT" != "x"; then if test "x$ALL_LINGUAS" = "x"; then LINGUAS= else AC_MSG_CHECKING(for catalogs to be installed) NEW_LINGUAS= for lang in ${LINGUAS=$ALL_LINGUAS}; do case "$ALL_LINGUAS" in *$lang*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;; esac done LINGUAS=$NEW_LINGUAS AC_MSG_RESULT($LINGUAS) fi dnl Construct list of names of catalog files to be constructed. if test -n "$LINGUAS"; then for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done fi fi dnl The reference to in the installed file dnl must be resolved because we cannot expect the users of this dnl to define HAVE_LOCALE_H. if test $ac_cv_header_locale_h = yes; then INCLUDE_LOCALE_H="#include " else INCLUDE_LOCALE_H="\ /* The system does not provide the header . Take care yourself. */" fi AC_SUBST(INCLUDE_LOCALE_H) dnl Determine which catalog format we have (if any is needed) dnl For now we know about two different formats: dnl Linux libc-5 and the normal X/Open format test -d intl || mkdir intl if test "$CATOBJEXT" = ".cat"; then AC_CHECK_HEADER(linux/version.h, msgformat=linux, msgformat=xopen) dnl Transform the SED scripts while copying because some dumb SEDs dnl cannot handle comments. sed -e '/^#/d' $srcdir/intl/$msgformat-msg.sed > intl/po2msg.sed fi dnl po2tbl.sed is always needed. sed -e '/^#.*[^\\]$/d' -e '/^#$/d' \ $srcdir/intl/po2tbl.sed.in > intl/po2tbl.sed dnl In the intl/Makefile.in we have a special dependency which makes dnl only sense for gettext. We comment this out for non-gettext dnl packages. if test "$PACKAGE" = "gettext"; then GT_NO="#NO#" GT_YES= else GT_NO= GT_YES="#YES#" fi AC_SUBST(GT_NO) AC_SUBST(GT_YES) dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly dnl find the mkinstalldirs script in another subdir but ($top_srcdir). dnl Try to locate is. MKINSTALLDIRS= if test -n "$ac_aux_dir"; then MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs" fi if test -z "$MKINSTALLDIRS"; then MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs" fi AC_SUBST(MKINSTALLDIRS) dnl *** For now the libtool support in intl/Makefile is not for real. l= AC_SUBST(l) dnl Generate list of files to be processed by xgettext which will dnl be included in po/Makefile. test -d po || mkdir po if test "x$srcdir" != "x."; then if test "x`echo $srcdir | sed 's@/.*@@'`" = "x"; then posrcprefix="$srcdir/" else posrcprefix="../$srcdir/" fi else posrcprefix="../" fi rm -f po/POTFILES sed -e "/^#/d" -e "/^\$/d" -e "s,.*, $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \ < $srcdir/po/POTFILES.in > po/POTFILES ]) # Check whether LC_MESSAGES is available in . # Ulrich Drepper , 1995. # # This file can be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 1 AC_DEFUN(AM_LC_MESSAGES, [if test $ac_cv_header_locale_h = yes; then AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES, [AC_TRY_LINK([#include ], [return LC_MESSAGES], am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)]) if test $am_cv_val_LC_MESSAGES = yes; then AC_DEFINE(HAVE_LC_MESSAGES) fi fi]) # Search path for a program which passes the given test. # Ulrich Drepper , 1996. # # This file can be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 1 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR, dnl TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]]) AC_DEFUN(AM_PATH_PROG_WITH_TEST, [# Extract the first word of "$2", so it can be a program name with args. set dummy $2; ac_word=[$]2 AC_MSG_CHECKING([for $ac_word]) AC_CACHE_VAL(ac_cv_path_$1, [case "[$]$1" in /*) ac_cv_path_$1="[$]$1" # Let the user override the test with a path. ;; *) IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" for ac_dir in ifelse([$5], , $PATH, [$5]); do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then if [$3]; then ac_cv_path_$1="$ac_dir/$ac_word" break fi fi done IFS="$ac_save_ifs" dnl If no 4th arg is given, leave the cache variable unset, dnl so AC_PATH_PROGS will keep looking. ifelse([$4], , , [ test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4" ])dnl ;; esac])dnl $1="$ac_cv_path_$1" if test -n "[$]$1"; then AC_MSG_RESULT([$]$1) else AC_MSG_RESULT(no) fi AC_SUBST($1)dnl ]) # Check whether mmap can map an arbitrary page from /dev/zero, without # MAP_FIXED. AC_DEFUN([AC_FUNC_MMAP_ANYWHERE], [AC_CHECK_HEADERS(unistd.h) AC_CHECK_FUNCS(getpagesize) AC_CACHE_CHECK(for working mmap from /dev/zero, ac_cv_func_mmap_anywhere, [AC_TRY_RUN([ /* Test by Richard Henderson and Alexandre Oliva. Check whether mmap from /dev/zero works. */ #include #include #include /* This mess was copied from the GNU getpagesize.h. */ #ifndef HAVE_GETPAGESIZE # ifdef HAVE_UNISTD_H # include # endif /* Assume that all systems that can run configure have sys/param.h. */ # ifndef HAVE_SYS_PARAM_H # define HAVE_SYS_PARAM_H 1 # endif # ifdef _SC_PAGESIZE # define getpagesize() sysconf(_SC_PAGESIZE) # else /* no _SC_PAGESIZE */ # ifdef HAVE_SYS_PARAM_H # include # ifdef EXEC_PAGESIZE # define getpagesize() EXEC_PAGESIZE # else /* no EXEC_PAGESIZE */ # ifdef NBPG # define getpagesize() NBPG * CLSIZE # ifndef CLSIZE # define CLSIZE 1 # endif /* no CLSIZE */ # else /* no NBPG */ # ifdef NBPC # define getpagesize() NBPC # else /* no NBPC */ # ifdef PAGESIZE # define getpagesize() PAGESIZE # endif /* PAGESIZE */ # endif /* no NBPC */ # endif /* no NBPG */ # endif /* no EXEC_PAGESIZE */ # else /* no HAVE_SYS_PARAM_H */ # define getpagesize() 8192 /* punt totally */ # endif /* no HAVE_SYS_PARAM_H */ # endif /* no _SC_PAGESIZE */ #endif /* no HAVE_GETPAGESIZE */ int main() { char *x; int fd, pg; fd = open("/dev/zero", O_RDWR); if (fd < 0) exit(1); pg = getpagesize(); x = (char*)mmap(0, pg, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0); if (x == (char *) -1) exit(2); *(int *)x += 1; if (munmap(x, pg) < 0) exit(3); exit(0); }], ac_cv_func_mmap_anywhere=yes, ac_cv_func_mmap_anywhere=no, ac_cv_func_mmap_anywhere=no)]) if test $ac_cv_func_mmap_anywhere = yes; then AC_DEFINE(HAVE_MMAP_ANYWHERE, 1, [Define if mmap can get us zeroed pages from /dev/zero.]) fi ]) # Check whether mmap can map a plain file, without MAP_FIXED. AC_DEFUN([AC_FUNC_MMAP_FILE], [AC_REQUIRE([AC_FUNC_MMAP_ANYWHERE])dnl AC_CACHE_CHECK(for working mmap of a file, ac_cv_func_mmap_file, [# Create a file one thousand bytes long. for i in 1 2 3 4 5 6 7 8 9 0 do for j in 1 2 3 4 5 6 7 8 9 0 do echo $i $j xxxxx done done > conftestdata$$ AC_TRY_RUN([ /* Test by Zack Weinberg. Modified from MMAP_ANYWHERE test by Richard Henderson and Alexandre Oliva. Check whether read-only mmap of a plain file works. */ #include #include #include #include int main() { char *x; int fd; struct stat st; fd = open("conftestdata$$", O_RDONLY); if (fd < 0) exit(1); if (fstat (fd, &st)) exit(2); x = (char*)mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0); if (x == (char *) -1) exit(3); if (x[0] != '1' || x[1] != ' ' || x[2] != '1' || x[3] != ' ') exit(4); if (munmap(x, st.st_size) < 0) exit(5); exit(0); }], ac_cv_func_mmap_file=yes, ac_cv_func_mmap_file=no, ac_cv_func_mmap_file=no)]) if test $ac_cv_func_mmap_file = yes; then AC_DEFINE(HAVE_MMAP_FILE, 1, [Define if read-only mmap of a plain file works.]) fi ])