X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Faclocal.m4;h=dd5a150ab8c93b0d53393b43bec702d3b8581d0b;hb=7093ff41e72f8f89b3fd38766ca755bb1a2b3859;hp=543938325ed4618dc34ff0287d1437257e06478b;hpb=6a7488afb8f10aff65fddfa4b5e146634d7351ae;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/aclocal.m4 b/gcc/aclocal.m4 index 543938325ed..dd5a150ab8c 100644 --- a/gcc/aclocal.m4 +++ b/gcc/aclocal.m4 @@ -1,69 +1,83 @@ +dnl See if stdbool.h properly defines bool and true/false. +AC_DEFUN(gcc_AC_HEADER_STDBOOL, +[AC_CACHE_CHECK([for working stdbool.h], + ac_cv_header_stdbool_h, +[AC_TRY_COMPILE([#include ], +[bool foo = false;], +ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)]) +if test $ac_cv_header_stdbool_h = yes; then + AC_DEFINE(HAVE_STDBOOL_H, 1, + [Define if you have a working header file.]) +fi +]) + dnl See whether we can include both string.h and strings.h. -AC_DEFUN(GCC_HEADER_STRING, +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) + AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both and .]) fi ]) dnl See whether we need a declaration for a function. -dnl GCC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES]) -AC_DEFUN(GCC_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 -#define rindex strrchr -#endif -#ifndef HAVE_INDEX -#define index strchr -#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) +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) + AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3]) fi ])dnl dnl Check multiple functions to see whether each needs a declaration. -dnl GCC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES]) -AC_DEFUN(GCC_NEED_DECLARATIONS, +dnl Arrange to define HAVE_DECL_ 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 $1 do -GCC_NEED_DECLARATION($ac_func, $2) +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], +dnl It is possible that the include files passed in here are local headers +dnl which supply a backup declaration for the relevant prototype based on +dnl the definition of (or lack of) the HAVE_DECL_ macro. If so, this test +dnl will always return success. E.g. see libiberty.h's handling of +dnl `basename'. To avoid this, we define the relevant HAVE_DECL_ macro to +dnl 1 so that any local headers used do not provide their own prototype +dnl during this test. +#undef $ac_tr_decl +#define $ac_tr_decl 1 + $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_FUNC_VFPRINTF_DOPRNT, +AC_DEFUN(gcc_AC_FUNC_VFPRINTF_DOPRNT, [AC_FUNC_VPRINTF vfprintf= doprint= @@ -77,29 +91,34 @@ AC_SUBST(vfprintf) AC_SUBST(doprint) ]) +dnl Check if we have strstr. +AC_DEFUN([gcc_AC_FUNC_STRSTR], + [AC_CHECK_FUNCS([strstr], [strstr=], [strstr=strstr.o]) + AC_SUBST([strstr])]) + dnl See if the printf functions in libc support %p in format strings. -AC_DEFUN(GCC_FUNC_PRINTF_PTR, +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() +int main() { char buf[64]; char *p = buf, *q = NULL; sprintf(buf, "%p", p); sscanf(buf, "%p", &q); - exit (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) + 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_PROG_LN_S, +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 @@ -131,7 +150,7 @@ 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_PROG_LN, +AC_DEFUN(gcc_AC_PROG_LN, [AC_MSG_CHECKING(whether ln works) AC_CACHE_VAL(gcc_cv_prog_LN, [rm -f conftestdata_t @@ -163,18 +182,18 @@ AC_SUBST(LN)dnl ]) dnl See whether the stage1 host compiler accepts the volatile keyword. -AC_DEFUN(GCC_C_VOLATILE, +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 $gcc_cv_c_volatile = yes ; then - AC_DEFINE(HAVE_VOLATILE) + AC_DEFINE(HAVE_VOLATILE, 1, [Define if your compiler understands volatile.]) fi ]) dnl Check whether long double is supported. This differs from the dnl built-in autoconf test in that it works for cross compiles. -AC_DEFUN(AC_GCC_C_LONG_DOUBLE, +AC_DEFUN(gcc_AC_C_LONG_DOUBLE, [AC_CACHE_CHECK(for long double, gcc_cv_c_long_double, [if test "$GCC" = yes; then gcc_cv_c_long_double=yes @@ -187,13 +206,26 @@ 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) + AC_DEFINE(HAVE_LONG_DOUBLE, 1, + [Define if your compiler supports the \`long double' type.]) +fi +]) + +dnl Check whether _Bool is built-in. +AC_DEFUN(gcc_AC_C__BOOL, +[AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool, +[AC_TRY_COMPILE(, +[_Bool foo;], +gcc_cv_c__bool=yes, gcc_cv_c__bool=no) +]) +if test $gcc_cv_c__bool = yes; then + AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.]) fi ]) dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead dnl of the usual 2. -AC_DEFUN(GCC_FUNC_MKDIR_TAKES_ONE_ARG, +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 @@ -208,11 +240,11 @@ AC_DEFUN(GCC_FUNC_MKDIR_TAKES_ONE_ARG, #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) + AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.]) fi ]) -AC_DEFUN(EGCS_PROG_INSTALL, +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 @@ -293,6 +325,52 @@ AC_DEFUN(AC_ISC_POSIX, ] ) + +dnl GCC_PATH_PROG(VARIABLE, PROG-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND [, PATH]]) +dnl like AC_PATH_PROG but use other cache variables +AC_DEFUN(GCC_PATH_PROG, +[# 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(gcc_cv_path_$1, +[case "[$]$1" in + /*) + gcc_cv_path_$1="[$]$1" # Let the user override the test with a path. + ;; + ?:/*) + gcc_cv_path_$1="[$]$1" # Let the user override the test with a dos path. + ;; + *) + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" +dnl $ac_dummy forces splitting on constant user-supplied paths. +dnl POSIX.2 word splitting is done only on the output of word expansions, +dnl not every word. This closes a longstanding sh security hole. + ac_dummy="ifelse([$4], , $PATH, [$4])" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + gcc_cv_path_$1="$ac_dir/$ac_word" + break + fi + done + IFS="$ac_save_ifs" +dnl If no 3rd arg is given, leave the cache variable unset, +dnl so GCC_PATH_PROGS will keep looking. +ifelse([$3], , , [ test -z "[$]gcc_cv_path_$1" && gcc_cv_path_$1="$3" +])dnl + ;; +esac])dnl +$1="$gcc_cv_path_$1" +if test -n "[$]$1"; then + AC_MSG_RESULT([$]$1) +else + AC_MSG_RESULT(no) +fi +AC_SUBST($1)dnl +]) + + + # Macro to add for using GNU gettext. # Ulrich Drepper , 1995. # @@ -349,15 +427,19 @@ AC_DEFUN(AM_WITH_NLS, gt_cv_func_gettext_libintl=no)]) fi + if test "$gt_cv_func_gettext_libintl" = "yes"; then + LIBS="-lintl $LIBS" + fi + if test "$gt_cv_func_gettext_libc" = "yes" \ || test "$gt_cv_func_gettext_libintl" = "yes"; then AC_DEFINE(HAVE_GETTEXT) - AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, + GCC_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, [test -z "`$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, + GCC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT) + GCC_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) AC_TRY_LINK(, [extern int _nl_msg_cat_cntr; return _nl_msg_cat_cntr], @@ -366,6 +448,8 @@ AC_DEFUN(AM_WITH_NLS, [CATOBJEXT=.mo DATADIRNAME=lib]) INSTOBJEXT=.mo + else + create_catalogs="no" fi fi ]) @@ -383,14 +467,17 @@ AC_DEFUN(AM_WITH_NLS, AC_CHECK_FUNC(catgets, [AC_DEFINE(HAVE_CATGETS) INTLOBJS="\$(CATOBJS)" - AC_PATH_PROG(GENCAT, gencat, no)dnl + GCC_PATH_PROG(GENCAT, gencat, no)dnl if test "$GENCAT" != "no"; then - AC_PATH_PROG(GMSGFMT, gmsgfmt, no) + GCC_PATH_PROG(GMSGFMT, gmsgfmt, no) if test "$GMSGFMT" = "no"; then - AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt, - [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no) + GCC_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt, + [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt) + if test "$GMSGFMT" = "msgfmt"; then + create_catalogs="no" + fi fi - AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, + GCC_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) USE_INCLUDED_LIBINTL=yes CATOBJEXT=.cat @@ -415,10 +502,15 @@ AC_DEFUN(AM_WITH_NLS, if test "$nls_cv_use_gnu_gettext" = "yes"; then dnl Mark actions used to generate GNU NLS library. INTLOBJS="\$(GETTOBJS)" - AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, + GCC_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt) - AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT) - AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, + GCC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT) + dnl If we didn't find either msgfmt or gmsgfmt, don't try to + dnl create a catalog. + if test "$MSGFMT" = "msgfmt" && test "$GMSGFMT" = "msgfmt"; then + create_catalogs="no" + fi + GCC_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :) AC_SUBST(MSGFMT) USE_INCLUDED_LIBINTL=yes @@ -445,6 +537,8 @@ AC_DEFUN(AM_WITH_NLS, fi fi + + # We need to process the po/ directory. POSUB=po else @@ -498,8 +592,6 @@ AC_DEFUN(AM_GNU_GETTEXT, AC_REQUIRE([AC_C_INLINE])dnl AC_REQUIRE([AC_TYPE_OFF_T])dnl AC_REQUIRE([AC_TYPE_SIZE_T])dnl - AC_REQUIRE([AC_FUNC_ALLOCA])dnl - AC_REQUIRE([AC_FUNC_MMAP])dnl AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \ unistd.h sys/param.h]) @@ -516,18 +608,26 @@ strdup __argz_count __argz_stringify __argz_next]) AM_LC_MESSAGES AM_WITH_NLS - if test "x$CATOBJEXT" != "x"; then + if test "x$create_catalogs" = "xno"; then + AC_MSG_WARN([No program for building catalogs found -> building disabled]) + fi + + if test "x$CATOBJEXT" != "x" && test "x$create_catalogs" != "xno" ; then if test "x$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 + if test "x$LINGUAS" = "x"; then + LINGUAS=$ALL_LINGUAS + else + NEW_LINGUAS= + for lang in $ALL_LINGUAS; do + case " $LINGUAS " in + *" $lang "*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;; + esac + done + LINGUAS=$NEW_LINGUAS + fi AC_MSG_RESULT($LINGUAS) fi @@ -639,16 +739,16 @@ AC_DEFUN(AM_LC_MESSAGES, # serial 1 -dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR, +dnl GCC_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, +AC_DEFUN(GCC_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, +AC_CACHE_VAL(gcc_cv_path_$1, [case "[$]$1" in /*) - ac_cv_path_$1="[$]$1" # Let the user override the test with a path. + gcc_cv_path_$1="[$]$1" # Let the user override the test with a path. ;; *) IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" @@ -656,19 +756,19 @@ AC_CACHE_VAL(ac_cv_path_$1, test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then if [$3]; then - ac_cv_path_$1="$ac_dir/$ac_word" + gcc_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 so GCC_PATH_PROGS will keep looking. +ifelse([$4], , , [ test -z "[$]gcc_cv_path_$1" && gcc_cv_path_$1="$4" ])dnl ;; esac])dnl -$1="$ac_cv_path_$1" +$1="$gcc_cv_path_$1" if test -n "[$]$1"; then AC_MSG_RESULT([$]$1) else @@ -676,3 +776,766 @@ else fi AC_SUBST($1)dnl ]) + +# Check whether mmap can map an arbitrary page from /dev/zero or with +# MAP_ANONYMOUS, without MAP_FIXED. +AC_DEFUN([AC_FUNC_MMAP_ANYWHERE], +[AC_CHECK_FUNCS(getpagesize) +# The test program for the next two tests is the same except for one +# set of ifdefs. +changequote({{{,}}})dnl +{{{cat >ct-mmap.inc <<'EOF' +#include +#include +#include +#include +#include +#include + +#if !defined (MAP_ANONYMOUS) && defined (MAP_ANON) +# define MAP_ANONYMOUS MAP_ANON +#endif + +/* 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 */ + +#ifndef MAP_FAILED +# define MAP_FAILED -1 +#endif + +#undef perror_exit +#define perror_exit(str, val) \ + do { perror(str); exit(val); } while (0) + +/* Some versions of cygwin mmap require that munmap is called with the + same parameters as mmap. GCC expects that this is not the case. + Test for various forms of this problem. Warning - icky signal games. */ + +static sigset_t unblock_sigsegv; +static jmp_buf r; +static size_t pg; +static int devzero; + +static char * +anonmap (size) + size_t size; +{ +#ifdef USE_MAP_ANON + return (char *) mmap (0, size, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); +#else + return (char *) mmap (0, size, PROT_READ|PROT_WRITE, + MAP_PRIVATE, devzero, 0); +#endif +} + +static void +sigsegv (unused) + int unused; +{ + sigprocmask (SIG_UNBLOCK, &unblock_sigsegv, 0); + longjmp (r, 1); +} + +/* Basic functionality test. */ +void +test_0 () +{ + char *x = anonmap (pg); + if (x == (char *) MAP_FAILED) + perror_exit("test 0 mmap", 2); + + *(int *)x += 1; + + if (munmap(x, pg) < 0) + perror_exit("test 0 munmap", 3); +} + +/* 1. If we map a 2-page region and unmap its second page, the first page + must remain. */ +static void +test_1 () +{ + char *x = anonmap (pg * 2); + if (x == (char *)MAP_FAILED) + perror_exit ("test 1 mmap", 4); + + signal (SIGSEGV, sigsegv); + if (setjmp (r)) + perror_exit ("test 1 fault", 5); + + x[0] = 1; + x[pg] = 1; + + if (munmap (x + pg, pg) < 0) + perror_exit ("test 1 munmap 1", 6); + x[0] = 2; + + if (setjmp (r) == 0) + { + x[pg] = 1; + perror_exit ("test 1 no fault", 7); + } + if (munmap (x, pg) < 0) + perror_exit ("test 1 munmap 2", 8); +} + +/* 2. If we map a 2-page region and unmap its first page, the second + page must remain. */ +static void +test_2 () +{ + char *x = anonmap (pg * 2); + if (x == (char *)MAP_FAILED) + perror_exit ("test 2 mmap", 9); + + signal (SIGSEGV, sigsegv); + if (setjmp (r)) + perror_exit ("test 2 fault", 10); + + x[0] = 1; + x[pg] = 1; + + if (munmap (x, pg) < 0) + perror_exit ("test 2 munmap 1", 11); + + x[pg] = 2; + + if (setjmp (r) == 0) + { + x[0] = 1; + perror_exit ("test 2 no fault", 12); + } + + if (munmap (x+pg, pg) < 0) + perror_exit ("test 2 munmap 2", 13); +} + +/* 3. If we map two adjacent 1-page regions and unmap them both with + one munmap, both must go away. + + Getting two adjacent 1-page regions with two mmap calls is slightly + tricky. All OS's tested skip over already-allocated blocks; therefore + we have been careful to unmap all allocated regions in previous tests. + HP/UX allocates pages backward in memory. No OS has yet been observed + to be so perverse as to leave unmapped space between consecutive calls + to mmap. */ + +static void +test_3 () +{ + char *x, *y, *z; + + x = anonmap (pg); + if (x == (char *)MAP_FAILED) + perror_exit ("test 3 mmap 1", 14); + y = anonmap (pg); + if (y == (char *)MAP_FAILED) + perror_exit ("test 3 mmap 2", 15); + + if (y != x + pg) + { + if (y == x - pg) + z = y, y = x, x = z; + else + { + fprintf (stderr, "test 3 nonconsecutive pages - %lx, %lx\n", + (unsigned long)x, (unsigned long)y); + exit (16); + } + } + + signal (SIGSEGV, sigsegv); + if (setjmp (r)) + perror_exit ("test 3 fault", 17); + + x[0] = 1; + y[0] = 1; + + if (munmap (x, pg*2) < 0) + perror_exit ("test 3 munmap", 18); + + if (setjmp (r) == 0) + { + x[0] = 1; + perror_exit ("test 3 no fault 1", 19); + } + + signal (SIGSEGV, sigsegv); + if (setjmp (r) == 0) + { + y[0] = 1; + perror_exit ("test 3 no fault 2", 20); + } +} + +int +main () +{ + sigemptyset (&unblock_sigsegv); + sigaddset (&unblock_sigsegv, SIGSEGV); + pg = getpagesize (); +#ifndef USE_MAP_ANON + devzero = open ("/dev/zero", O_RDWR); + if (devzero < 0) + perror_exit ("open /dev/zero", 1); +#endif + + test_0(); + test_1(); + test_2(); + test_3(); + + exit(0); +} +EOF}}} +changequote([,])dnl + +AC_CACHE_CHECK(for working mmap from /dev/zero, + ac_cv_func_mmap_dev_zero, +[AC_TRY_RUN( + [#include "ct-mmap.inc"], + ac_cv_func_mmap_dev_zero=yes, + [if test $? -lt 4 + then ac_cv_func_mmap_dev_zero=no + else ac_cv_func_mmap_dev_zero=buggy + fi], + # If this is not cygwin, and /dev/zero is a character device, it's probably + # safe to assume it works. + [case "$host_os" in + cygwin* | win32 | pe | mingw* ) ac_cv_func_mmap_dev_zero=buggy ;; + * ) if test -c /dev/zero + then ac_cv_func_mmap_dev_zero=yes + else ac_cv_func_mmap_dev_zero=no + fi ;; + esac]) +]) +if test $ac_cv_func_mmap_dev_zero = yes; then + AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1, + [Define if mmap can get us zeroed pages from /dev/zero.]) +fi + +AC_CACHE_CHECK([for working mmap with MAP_ANON(YMOUS)], + ac_cv_func_mmap_anon, +[AC_TRY_RUN( + [#define USE_MAP_ANON +#include "ct-mmap.inc"], + ac_cv_func_mmap_anon=yes, + [if test $? -lt 4 + then ac_cv_func_mmap_anon=no + else ac_cv_func_mmap_anon=buggy + fi], + # Unlike /dev/zero, it is not safe to assume MAP_ANON(YMOUS) works + # just because it's there. Some SCO Un*xen define it but don't implement it. + ac_cv_func_mmap_anon=no) +]) +if test $ac_cv_func_mmap_anon = yes; then + AC_DEFINE(HAVE_MMAP_ANON, 1, + [Define if mmap can get us zeroed pages using MAP_ANON(YMOUS).]) +fi +rm -f ct-mmap.inc +]) + +# Check whether mmap can map a plain file, without MAP_FIXED. +AC_DEFUN([AC_FUNC_MMAP_FILE], +[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 +]) + +dnl Locate a program and check that its version is acceptable. +dnl AC_PROG_CHECK_VER(var, name, version-switch, +dnl version-extract-regexp, version-glob) +AC_DEFUN(gcc_AC_CHECK_PROG_VER, +[AC_CHECK_PROG([$1], [$2], [$2]) +if test -n "[$]$1"; then + # Found it, now check the version. + AC_CACHE_CHECK(for modern $2, gcc_cv_prog_$2_modern, +[changequote(<<,>>)dnl + ac_prog_version=`<<$>>$1 $3 2>&1 | + sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'` +changequote([,])dnl + echo "configure:__oline__: version of $2 is $ac_prog_version" >&AC_FD_CC +changequote(<<,>>)dnl + case $ac_prog_version in + '') gcc_cv_prog_$2_modern=no;; + <<$5>>) + gcc_cv_prog_$2_modern=yes;; + *) gcc_cv_prog_$2_modern=no;; + esac +changequote([,])dnl +]) +else + gcc_cv_prog_$2_modern=no +fi +]) + +dnl Determine if enumerated bitfields are unsigned. ISO C says they can +dnl be either signed or unsigned. +dnl +AC_DEFUN(gcc_AC_C_ENUM_BF_UNSIGNED, +[AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned, +[AC_TRY_RUN(#include +enum t { BLAH = 128 } ; +struct s_t { enum t member : 8; } s ; +int main(void) +{ + s.member = BLAH; + if (s.member < 0) exit(1); + exit(0); + +}, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)]) +if test $gcc_cv_enum_bf_unsigned = yes; then + AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1, + [Define if enumerated bitfields are treated as unsigned values.]) +fi]) + +dnl Host type sizes probe. +dnl By Kaveh R. Ghazi. One typo fixed since. +dnl +AC_DEFUN([gcc_AC_COMPILE_CHECK_SIZEOF], +[changequote(<<, >>)dnl +dnl The name to #define. +define(<>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl +dnl The cache variable name. +define(<>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl +changequote([, ])dnl +AC_MSG_CHECKING(size of $1) +AC_CACHE_VAL(AC_CV_NAME, +[for ac_size in 4 8 1 2 16 $3 ; do # List sizes in rough order of prevalence. + AC_TRY_COMPILE([#include "confdefs.h" +#include +$2 +], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size) + if test x$AC_CV_NAME != x ; then break; fi +done +]) +if test x$AC_CV_NAME = x ; then + AC_MSG_ERROR([cannot determine a size for $1]) +fi +AC_MSG_RESULT($AC_CV_NAME) +AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1]) +undefine([AC_TYPE_NAME])dnl +undefine([AC_CV_NAME])dnl +]) + +dnl Probe number of bits in a byte. +dnl Note C89 requires CHAR_BIT >= 8. +dnl +AC_DEFUN(gcc_AC_C_CHAR_BIT, +[AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit, +[AC_EGREP_CPP(found, +[#ifdef HAVE_LIMITS_H +#include +#endif +#ifdef CHAR_BIT +found +#endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no) +]) +if test $gcc_cv_decl_char_bit = no; then + AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby, +[i=8 + gcc_cv_c_nbby= + while test $i -lt 65; do + AC_TRY_COMPILE(, + [switch(0) { + case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i): + case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)): + ; }], + [gcc_cv_c_nbby=$i; break]) + i=`expr $i + 1` + done + test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed +]) +if test $gcc_cv_c_nbby = failed; then + AC_MSG_ERROR(cannot determine number of bits in a byte) +else + AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby, + [Define as the number of bits in a byte, if \`limits.h' doesn't.]) +fi +fi]) + +dnl Checking for long long. +dnl By Caolan McNamara +dnl Added check for __int64, Zack Weinberg +dnl +AC_DEFUN([gcc_AC_C_LONG_LONG], +[AC_CACHE_CHECK(for long long int, ac_cv_c_long_long, + [AC_TRY_COMPILE(,[long long int i;], + ac_cv_c_long_long=yes, + ac_cv_c_long_long=no)]) + if test $ac_cv_c_long_long = yes; then + AC_DEFINE(HAVE_LONG_LONG, 1, + [Define if your compiler supports the \`long long' type.]) + fi +AC_CACHE_CHECK(for __int64, ac_cv_c___int64, + [AC_TRY_COMPILE(,[__int64 i;], + ac_cv_c___int64=yes, + ac_cv_c___int64=no)]) + if test $ac_cv_c___int64 = yes; then + AC_DEFINE(HAVE___INT64, 1, + [Define if your compiler supports the \`__int64' type.]) + fi +]) + +dnl Host character set probe. +dnl The EBCDIC values match the table in config/i370/i370.c; +dnl there are other versions of EBCDIC but GCC won't work with them. +dnl +AC_DEFUN([gcc_AC_C_CHARSET], +[AC_CACHE_CHECK(execution character set, ac_cv_c_charset, + [AC_EGREP_CPP(ASCII, +[#if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \ + && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21 +ASCII +#endif], ac_cv_c_charset=ASCII) + if test x${ac_cv_c_charset+set} != xset; then + AC_EGREP_CPP(EBCDIC, +[#if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \ + && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A +EBCDIC +#endif], ac_cv_c_charset=EBCDIC) + fi + if test x${ac_cv_c_charset+set} != xset; then + ac_cv_c_charset=unknown + fi]) +if test $ac_cv_c_charset = unknown; then + AC_MSG_ERROR([*** Cannot determine host character set.]) +elif test $ac_cv_c_charset = EBCDIC; then + AC_DEFINE(HOST_EBCDIC, 1, + [Define if the host execution character set is EBCDIC.]) +fi]) + +dnl Utility macro used by next two tests. +dnl AC_EXAMINE_OBJECT(C source code, +dnl commands examining object file, +dnl [commands to run if compile failed]): +dnl +dnl Compile the source code to an object file; then convert it into a +dnl printable representation. All unprintable characters and +dnl asterisks (*) are replaced by dots (.). All white space is +dnl deleted. Newlines (ASCII 0x10) in the input are preserved in the +dnl output, but runs of newlines are compressed to a single newline. +dnl Finally, line breaks are forcibly inserted so that no line is +dnl longer than 80 columns and the file ends with a newline. The +dnl result of all this processing is in the file conftest.dmp, which +dnl may be examined by the commands in the second argument. +dnl +AC_DEFUN([gcc_AC_EXAMINE_OBJECT], +[AC_LANG_SAVE +AC_LANG_C +dnl Next bit cribbed from AC_TRY_COMPILE. +cat > conftest.$ac_ext < conftest.dmp + $2 +ifelse($3, , , else + $3 +)dnl +fi +rm -rf conftest* +AC_LANG_RESTORE]) + +dnl Host endianness probe. +dnl This tests byte-within-word endianness. GCC actually needs +dnl to know word-within-larger-object endianness. They are the +dnl same on all presently supported hosts. +dnl Differs from AC_C_BIGENDIAN in that it does not require +dnl running a program on the host, and it defines the macro we +dnl want to see. +dnl +AC_DEFUN([gcc_AC_C_COMPILE_ENDIAN], +[AC_CACHE_CHECK(byte ordering, ac_cv_c_compile_endian, +[ac_cv_c_compile_endian=unknown +gcc_AC_EXAMINE_OBJECT([ +#ifdef HAVE_LIMITS_H +# include +#endif +/* This structure must have no internal padding. */ + struct { + char prefix[sizeof "\nendian:" - 1]; + short word; + char postfix[2]; + } tester = { + "\nendian:", +#if SIZEOF_SHORT == 4 + ('A' << (CHAR_BIT * 3)) | ('B' << (CHAR_BIT * 2)) | +#endif + ('A' << CHAR_BIT) | 'B', + 'X', '\n' +};], + [if grep 'endian:AB' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_compile_endian=big-endian + elif grep 'endian:BA' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_compile_endian=little-endian + fi]) +]) +if test $ac_cv_c_compile_endian = unknown; then + AC_MSG_ERROR([*** unable to determine endianness]) +elif test $ac_cv_c_compile_endian = big-endian; then + AC_DEFINE(HOST_WORDS_BIG_ENDIAN, 1, + [Define if the host machine stores words of multi-word integers in + big-endian order.]) +fi +]) + +dnl Floating point format probe. +dnl The basic concept is the same as the above: grep the object +dnl file for an interesting string. We have to watch out for +dnl rounding changing the values in the object, however; this is +dnl handled by ignoring the least significant byte of the float. +dnl +dnl Does not know about VAX G-float or C4x idiosyncratic format. +dnl It does know about PDP-10 idiosyncratic format, but this is +dnl not presently supported by GCC. S/390 "binary floating point" +dnl is in fact IEEE (but maybe we should have that in EBCDIC as well +dnl as ASCII?) +dnl +AC_DEFUN([gcc_AC_C_FLOAT_FORMAT], +[AC_CACHE_CHECK(floating point format, ac_cv_c_float_format, +[gcc_AC_EXAMINE_OBJECT( +[/* This will not work unless sizeof(double) == 8. */ +extern char sizeof_double_must_be_8 [sizeof(double) == 8 ? 1 : -1]; + +/* This structure must have no internal padding. */ +struct possibility { + char prefix[8]; + double candidate; + char postfix[8]; +}; + +#define C(cand) { "\nformat:", cand, ":tamrof\n" } +struct possibility table [] = +{ + C( 3.25724264705901305206e+01), /* @@IEEEFP - IEEE 754 */ + C( 3.53802595280598432000e+18), /* D__float - VAX */ + C( 5.32201830133125317057e-19), /* D.PDP-10 - PDP-10 - the dot is 0x13a */ + C( 1.77977764695171661377e+10), /* IBMHEXFP - s/390 format, ascii */ + C(-5.22995989424860458374e+10) /* IBMHEXFP - s/390 format, EBCDIC */ +};], + [if grep 'format:.@IEEEF.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='IEEE (big-endian)' + elif grep 'format:.I@@PFE.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='IEEE (big-endian)' + elif grep 'format:.FEEEI@.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='IEEE (little-endian)' + elif grep 'format:.EFP@@I.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='IEEE (little-endian)' + elif grep 'format:.__floa.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='VAX D-float' + elif grep 'format:..PDP-1.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='PDP-10' + elif grep 'format:.BMHEXF.:tamrof' conftest.dmp >/dev/null 2>&1; then + ac_cv_c_float_format='IBM 370 hex' + else + AC_MSG_ERROR(Unknown floating point format) + fi], + [AC_MSG_ERROR(compile failed)]) +]) +# IEEE is the default format. If the float endianness isn't the same +# as the integer endianness, we have to set FLOAT_WORDS_BIG_ENDIAN +# (which is a tristate: yes, no, default). This is only an issue with +# IEEE; the other formats are only supported by a few machines each, +# all with the same endianness. +format= +fbigend= +case $ac_cv_c_float_format in + 'IEEE (big-endian)' ) + if test $ac_cv_c_compile_endian = little-endian; then + fbigend=1 + fi + ;; + 'IEEE (little-endian)' ) + if test $ac_cv_c_compile_endian = big-endian; then + fbigend=0 + fi + ;; + 'VAX D-float' ) + format=VAX_FLOAT_FORMAT + ;; + 'PDP-10' ) + format=PDP10_FLOAT_FORMAT + ;; + 'IBM 370 hex' ) + format=IBM_FLOAT_FORMAT + ;; +esac +if test -n "$format"; then + AC_DEFINE_UNQUOTED(HOST_FLOAT_FORMAT, $format, + [Define to the floating point format of the host machine, if not IEEE.]) +fi +if test -n "$fbigend"; then + AC_DEFINE_UNQUOTED(HOST_FLOAT_WORDS_BIG_ENDIAN, $fbigend, + [Define to 1 if the host machine stores floating point numbers in + memory with the word containing the sign bit at the lowest address, + or to 0 if it does it the other way around. + + This macro should not be defined if the ordering is the same as for + multi-word integers.]) +fi +]) + +#serial AM2 + +dnl From Bruno Haible. + +AC_DEFUN([AM_ICONV], +[ + dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and + dnl those with the standalone portable GNU libiconv installed). + + AC_ARG_WITH([libiconv-prefix], +[ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [ + for dir in `echo "$withval" | tr : ' '`; do + if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi + if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi + done + ]) + + AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ + am_cv_func_iconv="no, consider installing GNU libiconv" + am_cv_lib_iconv=no + AC_TRY_LINK([#include +#include ], + [iconv_t cd = iconv_open("",""); + iconv(cd,NULL,NULL,NULL,NULL); + iconv_close(cd);], + am_cv_func_iconv=yes) + if test "$am_cv_func_iconv" != yes; then + am_save_LIBS="$LIBS" + LIBS="$LIBS -liconv" + AC_TRY_LINK([#include +#include ], + [iconv_t cd = iconv_open("",""); + iconv(cd,NULL,NULL,NULL,NULL); + iconv_close(cd);], + am_cv_lib_iconv=yes + am_cv_func_iconv=yes) + LIBS="$am_save_LIBS" + fi + ]) + if test "$am_cv_func_iconv" = yes; then + AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) + AC_MSG_CHECKING([for iconv declaration]) + AC_CACHE_VAL(am_cv_proto_iconv, [ + AC_TRY_COMPILE([ +#include +#include +extern +#ifdef __cplusplus +"C" +#endif +#if defined(__STDC__) || defined(__cplusplus) +size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); +#else +size_t iconv(); +#endif +], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const") + am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) + am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` + AC_MSG_RESULT([$]{ac_t:- + }[$]am_cv_proto_iconv) + AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1, + [Define as const if the declaration of iconv() needs const.]) + fi + LIBICONV= + if test "$am_cv_lib_iconv" = yes; then + LIBICONV="-liconv" + fi + AC_SUBST(LIBICONV) +])