/* version.h -- Cygwin version numbers and accompanying documentation. Copyright 1996, 1997, 1998, 1999 Cygnus Solutions. This file is part of Cygwin. This software is a copyrighted work licensed under the terms of the Cygwin license. Please consult the file "CYGWIN_LICENSE" for details. */ /* Cygwin versioning is relatively complicated because of its status as a shared library. Let's start with how versioning used to be done. Historical versioning in Cygwin 16.0 to 19.5: In the olden days of Cygwin, we had a dll major and minor version and a registry version. The major number started at 16 because the "b15" GNU-Win32 release of the compiler tools was out when this scheme was started. We incremented the DLL name frequently (for every official release) and towards the end of this period every release used a different shared memory area to prevent DLLs from interfering with each other (embedding a build timestamp into the name of the shared memory area). This turned out to be a Bad Idea (tm) because people needed to mingle separate releases and have them work together more than we thought they would. This was especially problematic when tty info needed to be retained when an old Cygwin executable executed a newer one. In the old scheme, we incremented the major number whenever a change to the dll invalidated existing executables. This can happen for a number of reasons, including when functions are removed from the export list of the dll. The minor number was incremented when a change was made that we wanted to record, but that didn't invalidate existing executables. Both numbers were recorded in the executable and in the dll. In October 1998 (starting with Cygwin 19.6), we started a new means of Cygwin versioning: */ /* The DLL major and minor numbers correspond to the "version of the Cygwin library". This version is used to track important changes to the DLL and is mainly informative in nature. */ /* The current cygwin version is 1.1.0 */ #define CYGWIN_VERSION_DLL_MAJOR 1001 #define CYGWIN_VERSION_DLL_MINOR 0 /* Major numbers before CYGWIN_VERSION_DLL_EPOCH are incompatible. */ #define CYGWIN_VERSION_DLL_EPOCH 19 /* CYGWIN_VERSION_DLL_COMBINED gives us a single number representing the combined DLL major and minor numbers. */ #define CYGWIN_VERSION_DLL_MAKE_COMBINED(maj, min) (((maj) * 1000) + min) #define CYGWIN_VERSION_DLL_COMBINED \ CYGWIN_VERSION_DLL_MAKE_COMBINED (CYGWIN_DLL_VERSION_MAJOR, CYGWIN_DLL_VERSION_MINOR) /* Every version of cygwin <= this uses an old, incorrect method to determine signal masks. */ #define CYGWIN_VERSION_DLL_BAD_SIGNAL_MASK 19005 /* API versions <= this had a termios structure whose members were too small to accomodate modern settings. */ #define CYGWIN_VERSION_DLL_OLD_TERMIOS 00005 #define CYGWIN_VERSION_DLL_IS_OLD_TERMIOS \ (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \ CYGWIN_VERSION_DLL_OLD_TERMIOS) /* We used to use the DLL major/minor to track non-backward-compatible interface changes to the API. Now we use an API major/minor number for this purpose. */ /* API_MAJOR 0.0: Initial version. API_MINOR changes: 1: Export cygwin32_ calls as cygwin_ as well. 2: Export j1, jn, y1, yn. 3: Export dll_noncygwin_dllcrt0. 4: New socket ioctls, revamped ifconf support. 5: Thread support/exports. 6: Change in termios handling. 7: Export scandir and alphasort. 8: Export _ctype_, _sys_errlist, _sys_nerr. 9: Mount-related changes, new cygwin_umount export. Raw device support (tape, floppies). 10: Fast math routine support added. 11: Export seekdir, telldir. 12: Export pthread_join, pthread_detach. 13: Export math funcs gamma and friends, also _j0, _j1, etc. 14: Export snprintf and vnsprintf. 15: Export glob 16: Export cygwin_stackdump */ #define CYGWIN_VERSION_API_MAJOR 0 #define CYGWIN_VERSION_API_MINOR 16 /* There is also a compatibity version number associated with the shared memory regions. It is incremented when incompatible changes are made to the shared memory region *or* to any named shared mutexes, semaphores, etc. The arbitrary starting version was 0 (cygwin release 98r2). */ #define CYGWIN_VERSION_SHARED_DATA 3 /* An identifier used in the names used to create shared objects. The full names include the CYGWIN_VERSION_SHARED_DATA version as well as this identifier. */ #define CYGWIN_VERSION_DLL_IDENTIFIER "cygwin1" /* The Cygwin mount table interface in the Win32 registry also has a version number associated with it in case that is changed in a non-backwards compatible fashion. Increment this version number whenever incompatible changes in mount table registry usage are made. 1: Original number version. 2: New mount registry layout, system-wide mount accessibility. */ #define CYGWIN_VERSION_MOUNT_REGISTRY 2 /* Identifiers used in the Win32 registry. */ #define CYGWIN_INFO_CYGNUS_REGISTRY_NAME "Cygnus Solutions" #define CYGWIN_INFO_CYGWIN_REGISTRY_NAME "Cygwin" #define CYGWIN_INFO_PROGRAM_OPTIONS_NAME "Program Options" #define CYGWIN_INFO_CYGWIN_MOUNT_REGISTRY_NAME "mounts v2" /* In addition to the above version number strings, the build process adds some strings that may be useful in debugging/identifying a particular Cygwin DLL: The mkvers.sh script at the top level produces a .cc file which initializes a cygwin_version structure based on the above version information and creates a string table for grepping via "fgrep '%%%' cygwinwhatever.dll" if you are using GNU grep. Otherwise you may want to do a "strings cygwinwhatever.dll | fgrep '%%%'" instead. This will produce output such as: %%% Cygwin dll_identifier: cygwin %%% Cygwin api_major: 0 %%% Cygwin api_minor: 0 %%% Cygwin dll_major: 19 %%% Cygwin dll_minor: 6 %%% Cygwin shared_data: 1 %%% Cygwin registry: b15 %%% Cygwin build date: Wed Oct 14 16:26:51 EDT 1998 %%% Cygwin shared id: cygwinS1 This information can also be obtained through a call to cygwin_internal (CW_GETVERSIONINFO). */