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author | Chris Johns <chrisj@rtems.org> | 2017-12-23 18:18:56 +1100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-01-25 08:45:26 +0100 |
commit | 2afb22b7e1ebcbe40373ff7e0efae7d207c655a9 (patch) | |
tree | 44759efe9374f13200a97e96d91bd9a2b7e5ce2a /cpukit/include/dlfcn.h | |
parent | MAINTAINERS: Add myself to Write After Approval. (diff) | |
download | rtems-2afb22b7e1ebcbe40373ff7e0efae7d207c655a9.tar.bz2 |
Remove make preinstall
A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
Diffstat (limited to 'cpukit/include/dlfcn.h')
-rw-r--r-- | cpukit/include/dlfcn.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/cpukit/include/dlfcn.h b/cpukit/include/dlfcn.h new file mode 100644 index 0000000000..1ac3ba1330 --- /dev/null +++ b/cpukit/include/dlfcn.h @@ -0,0 +1,112 @@ +/* $NetBSD: dlfcn.h,v 1.21 2010/01/07 07:35:35 skrll Exp $ */ + +/*- + * Copyright (c) 1998 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Paul Kranenburg. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _DLFCN_H_ +#define _DLFCN_H_ + +//#include <sys/featuretest.h> +#include <sys/cdefs.h> + +#if defined(_NETBSD_SOURCE) +typedef struct _dl_info { + const char *dli_fname; /* File defining the symbol */ + void *dli_fbase; /* Base address */ + const char *dli_sname; /* Symbol name */ + const void *dli_saddr; /* Symbol address */ +} Dl_info; +#endif /* defined(_NETBSD_SOURCE) */ + +/* + * User interface to the run-time linker. + */ +__BEGIN_DECLS +void *dlopen(const char *, int); +int dlclose(void *); +void *dlsym(void * __restrict, const char * __restrict); +#if defined(_NETBSD_SOURCE) +int dladdr(void * __restrict, Dl_info * __restrict); +int dlctl(void *, int, void *); +#endif +int dlinfo(void *, int, void *); +const char *dlerror(void); +__END_DECLS + +/* Values for dlopen `mode'. */ +#define RTLD_LAZY 1 +#define RTLD_NOW 2 +#define RTLD_GLOBAL 0x100 /* Allow global searches in object */ +#define RTLD_LOCAL 0x200 +#if defined(_NETBSD_SOURCE) +#define DL_LAZY RTLD_LAZY /* Compat */ +#endif + +/* + * Special handle arguments for dlsym(). + */ +#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ +#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ +#define RTLD_SELF ((void *) -3) /* Search the caller itself. */ + +/* + * dlctl() commands + */ +#if defined(_NETBSD_SOURCE) +#define DL_GETERRNO 1 +#define DL_GETSYMBOL 2 +#if 0 +#define DL_SETSRCHPATH x +#define DL_GETLIST x +#define DL_GETREFCNT x +#define DL_GETLOADADDR x +#endif /* 0 */ +#endif /* defined(_NETBSD_SOURCE) */ + +/* + * dlinfo() commands + * + * From Solaris: http://docs.sun.com/app/docs/doc/816-5168/dlinfo-3c?a=view + */ +#define RTLD_DI_UNRESOLVED 10 +#if defined(_NETBSD_SOURCE) +#define RTLD_DI_LINKMAP 3 +#if 0 +#define RTLD_DI_ARGSINFO 1 +#define RTLD_DI_CONFIGADDR 2 +#define RTLD_DI_LMID 4 +#define RTLD_DI_SERINFO 5 +#define RTLD_DI_SERINFOSIZE 6 +#define RTLD_DI_ORIGIN 7 +#define RTLD_DI_GETSIGNAL 8 +#define RTLD_DI_SETSIGNAL 9 +#endif +#endif /* _NETBSD_SOURCE */ + +#endif /* !defined(_DLFCN_H_) */ |