+2005-09-12 Derek Price <derek@ximbiot.com>
+ Paul Eggert <eggert@cs.ucla.edu>
+
+ * modules/glob (Files): Add glob-libc.h.
+
2005-09-08 Paul Eggert <eggert@cs.ucla.edu>
* modules/utimens (Files): Add m4/utimbuf.m4, since
+2005-09-12 Derek Price <derek@ximbiot.com>
+ Paul Eggert <eggert@cs.ucla.edu>
+
+ * glob-libc.h: Renamed from glob_.h. The new version is
+ taken from libc's glob.h, except with '#ifdef __GLOB_GNULIB'
+ protecting things that should be done only in gnulib contexts.
+ * glob_.h: New file, containing only the glob things needed for
+ gnulib.
+ (GLOB_PREFIX): Remove. All uses changed to look for __GLOB_GNULIB.
+ (__GLOB_CONCAT, __GLOB_XCONCAT, __GLOB_ID): Remove; no longer needed.
+ (glob, globfree, glob_pattern_p): Now defined simply in terms of
+ rpl_glob, rpl_globfree, rpl_glob_pattern_p.
+ (__GLOB_GNULIB): New macro, to keep the glob.h changes clearer
+ and to respect the namespace rules better.
+
2005-09-12 Paul Eggert <eggert@cs.ucla.edu>
Merge glibc and coreutils changes into gnulib, plus a few
--- /dev/null
+/* Copyright (C) 1991,92,95-98,2000,2001,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _GLOB_H
+#define _GLOB_H 1
+
+#ifndef __GLOB_GNULIB
+# include <sys/cdefs.h>
+#endif
+
+__BEGIN_DECLS
+
+/* We need `size_t' for the following definitions. */
+#ifndef __size_t
+# if defined __GNUC__ && __GNUC__ >= 2
+typedef __SIZE_TYPE__ __size_t;
+# ifdef __USE_XOPEN
+typedef __SIZE_TYPE__ size_t;
+# endif
+# else
+# include <stddef.h>
+# ifndef __size_t
+# define __size_t size_t
+# endif
+# endif
+#else
+/* The GNU CC stddef.h version defines __size_t as empty. We need a real
+ definition. */
+# undef __size_t
+# define __size_t size_t
+#endif
+
+/* Bits set in the FLAGS argument to `glob'. */
+#define GLOB_ERR (1 << 0)/* Return on read errors. */
+#define GLOB_MARK (1 << 1)/* Append a slash to each name. */
+#define GLOB_NOSORT (1 << 2)/* Don't sort the names. */
+#define GLOB_DOOFFS (1 << 3)/* Insert PGLOB->gl_offs NULLs. */
+#define GLOB_NOCHECK (1 << 4)/* If nothing matches, return the pattern. */
+#define GLOB_APPEND (1 << 5)/* Append to results of a previous call. */
+#define GLOB_NOESCAPE (1 << 6)/* Backslashes don't quote metacharacters. */
+#define GLOB_PERIOD (1 << 7)/* Leading `.' can be matched by metachars. */
+
+#if !defined __USE_POSIX2 || defined __USE_BSD || defined __USE_GNU
+# define GLOB_MAGCHAR (1 << 8)/* Set in gl_flags if any metachars seen. */
+# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions. */
+# define GLOB_BRACE (1 << 10)/* Expand "{a,b}" to "a" "b". */
+# define GLOB_NOMAGIC (1 << 11)/* If no magic chars, return the pattern. */
+# define GLOB_TILDE (1 << 12)/* Expand ~user and ~ to home directories. */
+# define GLOB_ONLYDIR (1 << 13)/* Match only directories. */
+# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
+ if the user name is not available. */
+# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+ GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
+ GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE| \
+ GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
+#else
+# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+ GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
+ GLOB_PERIOD)
+#endif
+
+/* Error returns from `glob'. */
+#define GLOB_NOSPACE 1 /* Ran out of memory. */
+#define GLOB_ABORTED 2 /* Read error. */
+#define GLOB_NOMATCH 3 /* No matches found. */
+#define GLOB_NOSYS 4 /* Not implemented. */
+#ifdef __USE_GNU
+/* Previous versions of this file defined GLOB_ABEND instead of
+ GLOB_ABORTED. Provide a compatibility definition here. */
+# define GLOB_ABEND GLOB_ABORTED
+#endif
+
+/* Structure describing a globbing run. */
+#ifdef __USE_GNU
+struct stat;
+#endif
+typedef struct
+ {
+ __size_t gl_pathc; /* Count of paths matched by the pattern. */
+ char **gl_pathv; /* List of matched pathnames. */
+ __size_t gl_offs; /* Slots to reserve in `gl_pathv'. */
+ int gl_flags; /* Set to FLAGS, maybe | GLOB_MAGCHAR. */
+
+ /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+ are used instead of the normal file access functions. */
+ void (*gl_closedir) (void *);
+#ifdef __USE_GNU
+ struct dirent *(*gl_readdir) (void *);
+#else
+ void *(*gl_readdir) (void *);
+#endif
+ void *(*gl_opendir) (__const char *);
+#ifdef __USE_GNU
+ int (*gl_lstat) (__const char *__restrict, struct stat *__restrict);
+ int (*gl_stat) (__const char *__restrict, struct stat *__restrict);
+#else
+ int (*gl_lstat) (__const char *__restrict, void *__restrict);
+ int (*gl_stat) (__const char *__restrict, void *__restrict);
+#endif
+ } glob_t;
+
+#if defined __USE_LARGEFILE64 && !defined __GLOB_GNULIB
+# ifdef __USE_GNU
+struct stat64;
+# endif
+typedef struct
+ {
+ __size_t gl_pathc;
+ char **gl_pathv;
+ __size_t gl_offs;
+ int gl_flags;
+
+ /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+ are used instead of the normal file access functions. */
+ void (*gl_closedir) (void *);
+# ifdef __USE_GNU
+ struct dirent64 *(*gl_readdir) (void *);
+# else
+ void *(*gl_readdir) (void *);
+# endif
+ void *(*gl_opendir) (__const char *);
+# ifdef __USE_GNU
+ int (*gl_lstat) (__const char *__restrict, struct stat64 *__restrict);
+ int (*gl_stat) (__const char *__restrict, struct stat64 *__restrict);
+# else
+ int (*gl_lstat) (__const char *__restrict, void *__restrict);
+ int (*gl_stat) (__const char *__restrict, void *__restrict);
+# endif
+ } glob64_t;
+#endif
+
+#if __USE_FILE_OFFSET64 && __GNUC__ < 2 && !defined __GLOB_GNULIB
+# define glob glob64
+# define globfree globfree64
+#endif
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+ The bits defined above may be set in FLAGS.
+ If a directory cannot be opened or read and ERRFUNC is not nil,
+ it is called with the pathname that caused the error, and the
+ `errno' value from the failing call; if it returns non-zero
+ `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
+ If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+ Otherwise, `glob' returns zero. */
+#if !defined __USE_FILE_OFFSET64 || __GNUC__ < 2 || defined __GLOB_GNULIB
+extern int glob (__const char *__restrict __pattern, int __flags,
+ int (*__errfunc) (__const char *, int),
+ glob_t *__restrict __pglob) __THROW;
+
+/* Free storage allocated in PGLOB by a previous `glob' call. */
+extern void globfree (glob_t *__pglob) __THROW;
+#else
+extern int __REDIRECT_NTH (glob, (__const char *__restrict __pattern,
+ int __flags,
+ int (*__errfunc) (__const char *, int),
+ glob_t *__restrict __pglob), glob64);
+
+extern void __REDIRECT_NTH (globfree, (glob_t *__pglob), globfree64);
+#endif
+
+#if defined __USE_LARGEFILE64 && !defined __GLOB_GNULIB
+extern int glob64 (__const char *__restrict __pattern, int __flags,
+ int (*__errfunc) (__const char *, int),
+ glob64_t *__restrict __pglob) __THROW;
+
+extern void globfree64 (glob64_t *__pglob) __THROW;
+#endif
+
+
+#ifdef __USE_GNU
+/* Return nonzero if PATTERN contains any metacharacters.
+ Metacharacters can be quoted with backslashes if QUOTE is nonzero.
+
+ This function is not part of the interface specified by POSIX.2
+ but several programs want to use it. */
+extern int glob_pattern_p (__const char *__pattern, int __quote) __THROW;
+#endif
+
+__END_DECLS
+
+#endif /* glob.h */
-/* Copyright (C) 1991,92,95-98,2000,2001,2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
+/* glob_.h -- Find a path matching a pattern.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
+ Copyright (C) 2005 Free Software Foundation, Inc.
- The GNU C Library is distributed in the hope that it will be useful,
+ Written by Derek Price <derek@ximbiot.com> & Paul Eggert <eggert@CS.UCLA.EDU>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _GLOB_H
-#define _GLOB_H 1
-
-/* Note the reversal of the common HAVE_SYS_CDEFS_H idiom below. In this
- way, #ifndef _SYS_CDEFS_H may be used to include <sys/cdefs.h> both when
- it has been checked for via the GNULIB configure test and found and when
- it has not been checked for, which we can presume means that the <glob.h>
- GNULIB shares with GLIBC is being included as a system header and not as
- part of GNULIB, in which case <sys/cdefs.h> may be assumed. */
-#ifndef _SYS_CDEFS_H
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef GLOB_H
+#define GLOB_H 1
+
+#ifdef HAVE_SYS_CDEFS_H
# include <sys/cdefs.h>
#endif
+
+#include <stddef.h>
+
#ifndef __BEGIN_DECLS
# define __BEGIN_DECLS
# define __END_DECLS
# define __THROW
#endif
-__BEGIN_DECLS
-
-/* We need `size_t' for the following definitions. */
-#ifndef GLOB_PREFIX
-# ifndef __size_t
-# if defined __GNUC__ && __GNUC__ >= 2
-typedef __SIZE_TYPE__ __size_t;
-# ifdef __USE_XOPEN
-typedef __SIZE_TYPE__ size_t;
-# endif
-# else
-# include <stddef.h>
-# ifndef __size_t
-# define __size_t size_t
-# endif
-# endif
-# else
-/* The GNU CC stddef.h version defines __size_t as empty. We need a real
- definition. */
-# undef __size_t
-# define __size_t size_t
-# endif
-#else /* GLOB_PREFIX */
-# include <stddef.h>
-# undef __size_t
+#ifndef __size_t
# define __size_t size_t
-#endif /* !GLOB_PREFIX */
-
-#ifdef GLOB_PREFIX
-/* get struct stat */
-# include <sys/stat.h>
-
-/* The following are necessary with MSVC and who knows where else. */
-# ifndef __const
-# define __const const
-# endif
-# ifndef __restrict
-# define __restrict restrict
-# endif
-# ifndef __USE_GNU
-# define __USE_GNU 1
-# endif
-#endif /* GLOB_PREFIX */
-
-/* Bits set in the FLAGS argument to `glob'. */
-#define GLOB_ERR (1 << 0)/* Return on read errors. */
-#define GLOB_MARK (1 << 1)/* Append a slash to each name. */
-#define GLOB_NOSORT (1 << 2)/* Don't sort the names. */
-#define GLOB_DOOFFS (1 << 3)/* Insert PGLOB->gl_offs NULLs. */
-#define GLOB_NOCHECK (1 << 4)/* If nothing matches, return the pattern. */
-#define GLOB_APPEND (1 << 5)/* Append to results of a previous call. */
-#define GLOB_NOESCAPE (1 << 6)/* Backslashes don't quote metacharacters. */
-#define GLOB_PERIOD (1 << 7)/* Leading `.' can be matched by metachars. */
-
-#if !defined __USE_POSIX2 || defined __USE_BSD || defined __USE_GNU
-# define GLOB_MAGCHAR (1 << 8)/* Set in gl_flags if any metachars seen. */
-# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions. */
-# define GLOB_BRACE (1 << 10)/* Expand "{a,b}" to "a" "b". */
-# define GLOB_NOMAGIC (1 << 11)/* If no magic chars, return the pattern. */
-# define GLOB_TILDE (1 << 12)/* Expand ~user and ~ to home directories. */
-# define GLOB_ONLYDIR (1 << 13)/* Match only directories. */
-# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
- if the user name is not available. */
-# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
- GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
- GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE| \
- GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
-#else
-# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
- GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
- GLOB_PERIOD)
#endif
-
-/* Error returns from `glob'. */
-#define GLOB_NOSPACE 1 /* Ran out of memory. */
-#define GLOB_ABORTED 2 /* Read error. */
-#define GLOB_NOMATCH 3 /* No matches found. */
-#define GLOB_NOSYS 4 /* Not implemented. */
-#ifdef __USE_GNU
-/* Previous versions of this file defined GLOB_ABEND instead of
- GLOB_ABORTED. Provide a compatibility definition here. */
-# define GLOB_ABEND GLOB_ABORTED
+#ifndef __const
+# define __const const
#endif
-
-/* Structure describing a globbing run. */
-#ifdef __USE_GNU
-struct stat;
+#ifndef __restrict
+# define __restrict restrict
#endif
-typedef struct
- {
- __size_t gl_pathc; /* Count of paths matched by the pattern. */
- char **gl_pathv; /* List of matched pathnames. */
- __size_t gl_offs; /* Slots to reserve in `gl_pathv'. */
- int gl_flags; /* Set to FLAGS, maybe | GLOB_MAGCHAR. */
-
- /* If the GLOB_ALTDIRFUNC flag is set, the following functions
- are used instead of the normal file access functions. */
- void (*gl_closedir) (void *);
-#ifdef __USE_GNU
-# if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__
- struct dirent *(*gl_readdir) (void *);
-# else
- struct direct *(*gl_readdir) (void *);
-# endif
-#else
- void *(*gl_readdir) (void *);
-#endif
- void *(*gl_opendir) (__const char *);
-#ifdef __USE_GNU
- int (*gl_lstat) (__const char *__restrict, struct stat *__restrict);
- int (*gl_stat) (__const char *__restrict, struct stat *__restrict);
-#else
- int (*gl_lstat) (__const char *__restrict, void *__restrict);
- int (*gl_stat) (__const char *__restrict, void *__restrict);
-#endif
- } glob_t;
-
-#if !defined GLOB_PREFIX && defined __USE_LARGEFILE64
-# ifdef __USE_GNU
-struct stat64;
-# endif
-typedef struct
- {
- __size_t gl_pathc;
- char **gl_pathv;
- __size_t gl_offs;
- int gl_flags;
-
- /* If the GLOB_ALTDIRFUNC flag is set, the following functions
- are used instead of the normal file access functions. */
- void (*gl_closedir) (void *);
-# ifdef __USE_GNU
- struct dirent64 *(*gl_readdir) (void *);
-# else
- void *(*gl_readdir) (void *);
-# endif
- void *(*gl_opendir) (__const char *);
-# ifdef __USE_GNU
- int (*gl_lstat) (__const char *__restrict, struct stat64 *__restrict);
- int (*gl_stat) (__const char *__restrict, struct stat64 *__restrict);
-# else
- int (*gl_lstat) (__const char *__restrict, void *__restrict);
- int (*gl_stat) (__const char *__restrict, void *__restrict);
-# endif
- } glob64_t;
-#endif
-
-#ifdef GLOB_PREFIX
-# define __GLOB_CONCAT(x, y) x ## y
-# define __GLOB_XCONCAT(x, y) __GLOB_CONCAT (x, y)
-# define __GLOB_ID(y) __GLOB_XCONCAT (GLOB_PREFIX, y)
-# define glob __GLOB_ID (glob)
-# define globfree __GLOB_ID (globfree)
-# define glob_pattern_p __GLOB_ID (glob_pattern_p)
-#else
-# if __USE_FILE_OFFSET64 && __GNUC__ < 2
-# define glob glob64
-# define globfree globfree64
-# endif
+#ifndef __USE_GNU
+# define __USE_GNU 1
#endif
-/* Do glob searching for PATTERN, placing results in PGLOB.
- The bits defined above may be set in FLAGS.
- If a directory cannot be opened or read and ERRFUNC is not nil,
- it is called with the pathname that caused the error, and the
- `errno' value from the failing call; if it returns non-zero
- `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
- If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
- Otherwise, `glob' returns zero. */
-#if !defined __USE_FILE_OFFSET64 || __GNUC__ < 2 || defined GLOB_PREFIX
-extern int glob (__const char *__restrict __pattern, int __flags,
- int (*__errfunc) (__const char *, int),
- glob_t *__restrict __pglob) __THROW;
-
-/* Free storage allocated in PGLOB by a previous `glob' call. */
-extern void globfree (glob_t *__pglob) __THROW;
-#else
-extern int __REDIRECT_NTH (glob, (__const char *__restrict __pattern,
- int __flags,
- int (*__errfunc) (__const char *, int),
- glob_t *__restrict __pglob), glob64);
-
-extern void __REDIRECT_NTH (globfree, (glob_t *__pglob), globfree64);
-#endif
-
-#if !defined GLOB_PREFIX && defined __USE_LARGEFILE64
-extern int glob64 (__const char *__restrict __pattern, int __flags,
- int (*__errfunc) (__const char *, int),
- glob64_t *__restrict __pglob) __THROW;
-extern void globfree64 (glob64_t *__pglob) __THROW;
+#ifndef HAVE_DIRENT_H
+# define dirent direct
#endif
+#define glob rpl_glob
+#define globfree rpl_globfree
+#define glob_pattern_p rpl_glob_pattern_p
-#ifdef __USE_GNU
-/* Return nonzero if PATTERN contains any metacharacters.
- Metacharacters can be quoted with backslashes if QUOTE is nonzero.
-
- This function is not part of the interface specified by POSIX.2
- but several programs want to use it. */
-extern int glob_pattern_p (__const char *__pattern, int __quote) __THROW;
-#endif
+#define __GLOB_GNULIB 1
-__END_DECLS
+/* Now the standard GNU C Library header should work. */
+#include "glob-libc.h"
-#endif /* glob.h */
+#endif /* GLOB_H */
+2005-09-12 Derek Price <derek@ximbiot.com>
+ Paul Eggert <eggert@cs.ucla.edu>
+
+ * m4/glob.m4 (gl_GLOB_SUBSTITUTE): AC_LIBSOURCES for glob.c,
+ glob_.h, glob-libc.h.
+ (gl_PREREQ_GLOB): Remove _SYS_CDEFS_H hack; no longer needed.
+
2005-08-31 Simon Josefsson <jas@extundo.com>
* socklen.m4: New file.
-# glob.m4 serial 2
+# glob.m4 serial 3
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
gl_PREREQ_GLOB
GLOB_H=glob.h
+ AC_LIBSOURCES([glob.c, glob_.h, glob-libc.h])
AC_LIBOBJ([glob])
- AC_DEFINE([GLOB_PREFIX], [[rpl_]],
- [Define to rpl_ if the glob replacement functions and variables
- should be used.])
AC_SUBST([GLOB_H])
])
# Prerequisites of lib/glob.*.
AC_DEFUN([gl_PREREQ_GLOB],
[ AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE])dnl
+ AC_REQUIRE([AC_GNU_SOURCE])dnl
AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_CHECK_HEADERS_ONCE([sys/cdefs.h unistd.h])dnl
AC_CHECK_FUNCS_ONCE([getlogin_r getpwnam_r])dnl
- AC_CHECK_HEADERS([sys/cdefs.h], [SYS_CDEFS_H=yes], [SYS_CDEFS_H=no])
-
- dnl Note the reversal of the common HAVE_SYS_CDEFS_H idiom below. In this
- dnl way, #ifndef _SYS_CDEFS_H may be used to include <sys/cdefs.h> both when
- dnl it has been checked for via the GNULIB configure test and found and when
- dnl it has not been checked for, which we can presume means that the <glob.h>
- dnl GNULIB shares with GLIBC is being included as a system header and not as
- dnl part of GNULIB, in which case <sys/cdefs.h> may be assumed.
- if test $SYS_CDEFS_H = no; then
- AC_DEFINE(_SYS_CDEFS_H, 1,
- [Define to `1' if <sys/cdefs.h> is *not* available on this system.])
- fi
:])
Files:
lib/glob_.h
+lib/glob-libc.h
lib/glob.c
m4/d-type.m4
m4/glob.m4
Makefile.am:
BUILT_SOURCES += $(GLOB_H)
-EXTRA_DIST += glob_.h
# We need the following in order to create <glob.h> when the system
# doesn't have one that works with the given compiler.