Tryag File Manager
Home
-
Turbo Force
Current Path :
/
usr
/
share
/
doc
/
gawk-3.1.5
/
README_d
/
Upload File :
New :
File
Dir
//usr/share/doc/gawk-3.1.5/README_d/README.pc
This is the README for GNU awk 3.1 under Windows32, OS/2, and DOS. Gawk has been compiled and tested under OS/2, DOS, and Windows32 using the GNU development tools from DJ Delorie (DJGPP; DOS with special support for long filenames under Win95), Eberhard Mattes (EMX; OS/2, DOS, and Windows32 with rsxnt), and Jan-Jaap van der Heijden and Mumit Khan (Mingw32; Windows32). Microsoft Visual C/C++ can be used to build a Windows32 version for Windows 9x/NT, and MSC can be used to build 16-bit versions for DOS and OS/2. (As of 3.1.2, the MSC version doesn't work, but the maintainer for it is working on fixing it.) The cygwin environment (http://www.cygwin.com) may also be used to compile and run gawk under Windows. For cygwin, building and installation is the same as under Unix: tar -xvpzf gawk-3.1.x.tar.gz cd gawk-3.1.x ./configure && make The `configure' step takes a long time, but works otherwise. ******************************** N O T E ********************************** * The `|&' operator only works when gawk is compiled for cygwin. Neither * * socket support nor two-way pipes work in any other Windows environment! * *************************************************************************** Building gawk ------------- Building on DOS or Windows environments can be troublesome, in part due to shell limitations, the long filename issue, and various Windows32 pipe considerations. The situation is somewhat better on OS/2. The general recommendation is to use tools (especially make) which are compatible or built with the compiler to be used on gawk. Building versions which do not understand long filenames on systems that offer long names is a special case. The maintainers unpack the distribution and process using utilities (unzip, make, cmp) which do not use long filenames. (For example, the djgpp tools will work if LFN=n is set in the environment.) Copy the files in the `pc' directory (EXCEPT for `ChangeLog') to the directory with the rest of the gawk sources. (The subdirectories of `pc' need not be copied.) The makefile contains a configuration section with comments, and may need to be edited in order to work with your make utility. The "prefix" line in the Makefile is used during the install of gawk (and in building igawk.bat and igawk.cmd). Since the libraries for gawk will be installed under $(prefix)/lib/awk (e.g., /gnu/lib/awk), it is convenient to have this directory in DEFPATH of config.h. The makefile contains a number of targets for building various DOS and OS/2 versions. A list of targets will be printed if the make command is given without a target. As an example, to build gawk using the djgpp tools, enter "make djgpp". Testing and installing gawk --------------------------- The command "make test" (and possibly "make install") requires several Unix-like tools, including an sh-like shell, sed, cp, and cmp. Only dmake and GNU make are known to work on "make test". There are two methods for the install: Method 1 uses a typical Unix-like approach and requires cat, cp, mkdir, sed, and sh; method 2 uses gawk and batch files. See the configuration section of the makefile. The file test/Makefile will need some editing (especially for DOS). A sample makefile with comments appears in pc/Makefile.tst, and can be used to modify test/Makefile for your platform. In addition, some files in the test directory may need to have their end-of-line markers converted, as described in Makefile.tst. As with building gawk, the OS, shell, and long filename issues come into play when testing, too. If you are testing gawk on a LFN aware system with some LFN aware tools, you may have problems if the shell that you specify in test/Makefile is not LFN aware. This problem will apply whether or not you are building a LFN aware gawk. See the comments in pc/Makefile.tst for more information on this. It is routine to install by hand, but note that the install target also builds igawk.bat and igawk.cmd, which are used to add an include facility to gawk (and which require sh). Notes ----- 1. Collections containing gawk and various utilities for OS/2 or DOS include the GNUish Project, Rommel's OS/2 collection at LEO, and the djgpp collection. The GNUish Project was designed to bring GNU-like programs to small systems running OS/2 and DOS. Binary distributions of gawk are maintained in GNUish, and include 16bit OS/2 and DOS, 32bit djgpp, and Windows32 versions. Information on GNUish is available via http://www.simtel.net/simtel.net/ or ftp://ftp.simtel.net/simtelnet/gnu/gnuish Documentation appears in gnuish.htm (html) or gnuish.inf (info). Kai Uwe Rommel <rommel@leo.org> maintains a (mostly OS/2) collection at http://www.leo.org/archiv/os2 or ftp://ftp.leo.org It contains emx-compiled (32bit) versions of gawk for OS/2, DOS, and Windows32, along with many OS/2 utilities. The djgpp collection at ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/ contains a djgpp-compiled (32bit) version of gawk, along with many djgpp-compiled utilities. The Mingw32 collection at http://www.mingw.org contains links to ported software. The site by Jan-Jaap van der Heijden http://agnes.dida.physik.uni-essen.de/~janjaap/ is apparently no longer maintained, but it was accessible as of Jan 2001 and may contain files of interest. 2. The following table illustrates some of the differences among the various compiled versions of gawk. For example, the djgpp version runs on all the systems, but with differing capabilities: it supports long filenames under Win-9x but not under NT, and it runs as a DPMI application under OS/2 (which translates into "works in the DOS-box under OS/2, but not as a true OS/2 application"). DOS Win/WfW Win9x NT OS/2 ------------------------------------------------------- djgpp | DPMI DPMI DPMI DPMI,NoLFN DPMI emx(1) | N N N N OS2 emxbnd(2) | VCPI,DPMI DPMI DPMI,NoLFN DPMI,NoLFN DPMI,OS2 emxnt(3) | N N Windows32 Windows32 N msc(4) | 16 16 16,NoLFN 16,NoLFN 16,DOS msc6bnd | 16 16 16,NoLFN 16,NoLFN 16,DOS,OS2 msc6os2 | N N N N 16,OS2 vcWin32 | N N Windows32 Windows32 N mingw32 | N N Windows32 Windows32 N (1) Requires emxrt. (2) May run as a DPMI app in plain DOS and in a DOS-shell under OS/2 or Windows, and as a true OS/2 application under OS/2. DPMI requires rsxnt, and VCPI or use as an OS/2 app requires emxrt. (3) Requires rsxnt. (4) When compiling, MSC 8, when run in Windows 9x, will require that if files are listed in #include statements with LFNs (eg. <patchlevel.h>), that the file be named with the LFN. 16 16bit; limited capacity, especially under DOS. DOS Runs as a DOS application. DPMI Dos Protected Mode Interface; program runs as a DOS application. Under plain DOS, a DPMI server (such as csdpmi from the djgpp archives) is required. See also VCPI. emxrt The emx runtime, available from LEO. N Not supported. NoLFN No long filename support. OS2 Runs as an OS/2 application. rsxnt Runtimes for use with DPMI or Windows32. VCPI Virtual Control Program Interface; program runs as a DOS app. Memory managers (such as emm386) may need adjustment. VCPI cannot be used under OS/2, Win/WfW, Win-95, or NT. See also DPMI. Windows32 Uses/supports Windows32 features (such as long filenames). Reportedly, NTEmacs (another Windows32 program) can run programs such as Windows32-gawk asynchronously. Similarly, as native OS/2 versions are a plus under OS/2 even for command-line programs, native Windows32 versions may be desired under NT and Win95. Users interested in Windows32 applications may also wish to examine the Cygnus cygwin project at http://sources.redhat.com/cygwin/ or the Mingw32 work at http://www.mingw.org. Windows32 gawk will often require that utilities run from within gawk be Windows32 (e.g., the tests place this requirement on the cat utility). 3. An sh-like shell may be useful for awk programming (and is essential for running "make test"). Stewartson's sh (OS/2 and DOS) is a good choice, and may be found in GNUish. Stewartson's shell uses a configuration file (see "Command Line Building" in the sh manual page), and it may be necessary to edit the entry for gawk. The following entries are suggested: -- $(EXTENDED_LINE) -- -- Comment only, not part of file -- gawk = unix ignoretype # emxbnd gawk = unix # djgpp; msc* with Stewartson's stdargv # No entry for emx or for msc* without stdargv gawk = ignoretype # if you want something which which always work # --but without the use of @-include files. However, users of djgpp versions of gawk may prefer "dos" over "unix" in the above, due to the way djgpp handles @-include files. Entries for other other utilities (such as sed and wc) may need to be edited in order to match your specific collection of programs. Daisuke Aoyama <jack@st.rim.or.jp> has ported Bash 1.14.7 to djgpp. This version worked flawlessly in tests with djgpp gawk and make. bash is now part of the djgpp collection; the older port may be found on http://www.neongenesis.com/~jack/djgpp-work/beta/index.html Under OS/2, bash should be a good choice; however, there has been some trouble getting a solid version. As of Feb-95, there are two bash ports, available at LEO under shells/gnu/. LEO also contains a Korn shell (ksh), tcsh, zsh, and a demo of Hamilton's C shell, but these have not been tested with gawk by the maintainers. Reports are welcomed. Users of the emx versions of gawk may wish to set EMXSHELL, which overrides COMSPEC when running shells from emx programs. Similarly, the djgpp version of gawk respects SHELL. Compatibility among shells and various utilities (including gawk) continues to be a problem. Stewartson's shell may be the best choice for emx-compiled programs (although djgpp-bash almost works with emx on DOS). GNU make is recommended if using djgpp-bash. Beginning with 3.0.4, the MSC (DOS/Windows32) and Mingw32 versions write pipe and system() commands to a temporary file, and then execute with SHELL or COMSPEC. The current mechanism defaults to dos-style shell conventions unless the shell is one of sh, bash, csh, tcsh, sh32, sh16, or ksh. 4. GNU make is available at LEO for OS/2, in the djgpp collection for DOS, and in the Mingw32 collection for Windows32. dmake is by Dennis Vadura (dvadura@watdragon.uwaterloo.ca), CS Dept., University of Waterloo. OS/2 and DOS versions can be found as part of the GNUish project. Note that DOS users will need the DOS-only version (due to the swap requirement). Ndmake is by D.G. Kneller. This ShareWare program was later released as Opus Make (which is available for OS/2 and DOS). Ndmake 4.5 is available at ftp://ftp.simtel.net/simtelnet/msdos/c/ndmake45.zip 5. Stewartson's shell contains sources for a setargv-replacement for MSC, which can add enhanced command-line processing capabilities to gawk. See the makefile. Note that there is a fatal bug in stdargv.c, triggered in the case of no closing quote. The following patch treats this case as if a quote was inserted as the last character on the command-line. 478,479c478,482 < else < spos = &spos[strlen (cpos)]; --- > else { > /* No matching quote. Fake it. */ > spos = cpos + strlen (cpos) + 1; > break; > } Known bugs ---------- 1. DJGPP version 1 has known problems with signals, and in the way it handles command-lines. Older versions of this file contain notes on other bugs, and on a few bugs uncovered in the v2 betas. Testing of gawk with DJGPP v1 ended with gawk-3.0. djgpp-2.01 and djgpp ports of GNU make 3.75 or later are strongly preferred, in part due to enhanced support for sh-like shells. 2. emx does not support DST. On 2-Jan-96, Mattes writes: Quotation from ISO 9899-1990: 7.12.3.5 The strftime function [...] %Z is replaced by the time zone name or abbreviation, or by no characters if no time zone is determinable. As emx does not yet support DST, it does not know which one of the two time zones (with DST vs. without DST) applies. In consequence, `no time zone is determinable'. As a workaround, it may be possible to edit do_strftime() of builtin.c according to Mattes' recommendation: If you happen to know whether DST applies or not for a given struct tm, just set its tm_isdst to a positive value or to zero, respectively. Then, strftime() will replace %Z with the name of the time zone. However, this probably won't yield a generic solution given that the rules for when DST starts and stops vary depending upon your location and the rules have changed over time. Most versions of UNIX maintain this information in a database (of sorts). In Solaris, for instance, it can be found in /usr/share/zoneinfo/*. The setting of the TZ environment variable (eg. TZ=US/Pacific) is then used to lookup the specifics for that locale. 3. The 16-bit DOS version can exhaust memory on scripts such as Henry Spencer's "awf". Use GNU C versions if possible. 4. builtin.c of gawk-3.0.[1-6] triggers a bug in MSC 6.00A. The makefile works around the bug by compiling builtin.c without optimizations (-Od). In limited testing, it appears that inserting some dummy code in builtin.c can provide a better solution than disabling optimizations. 5. There are problems with system() when using the rsx package with emx programs (rsx is used in DPMI environments such as MS-Win). The djgpp versions are preferred in this case. 6. In contrast to getpid() on UNIX, the getpid() in Microsoft C/C++ 1.52 (AKA 8.0) sometimes returns negative numbers. The DOS Gawk developers felt that it was best to use Microsoft's built-in function; but at the same time, we are placing this warning here, because this behavior will undoubtably be surprising to many. 7. MSC 6 fails the strftlng test. The funstack test exhausts memory on the 16bit DOS versions. 8. Eli Zaretskii writes: "Make can crash with SIGFPE after finishing all the tests. This happens on Windows 95 only, and Gawk 3.0.3 does that as well (as do older versions of Make). The cause for this is the log(-1) call in the last test. Based on some limited testing, I'd say that the problem is in sloppy Windows handling of the FPU: it doesn't clean up the FPU after a program exits, so if Make has SIGFPE unmasked, it crashes." 9. gawk built from the mingw32 and vcWin32 targets continues to have problems with pipes; in particular, the pipeio1 test fails. 10. As mentioned above, `|&' only works with cygwin. Gawk thanks ----------- The DOS maintainers wish to express their thanks to Eli Zaretskii <eliz@is.elta.co.il> for his work and for the many conversations concerning gawk, make, and djgpp. His FAQ for djgpp is essential reading, and he was always willing to answer our questions (even when we didn't read the relevant portions of the FAQ :). We are indebted to Juan Grigera <juan@biophnet.unlp.edu.ar> for the Visual C++ target, and for additional help on changes for Windows32. ---- If you have any problems with the DOS or OS/2 versions of Gawk, please send bug reports (along with the version and compiler used) to Scott Deifik, scottd@amgen.com (DOS versions) or gawk-maintainer@unixos2.org (OS/2 version) Darrel Hankerson, hankedr@mail.auburn.edu Support for Windows32 started in gawk-3.0.3. Reports on the Visual C++ version (vcWin32) may be sent to Juan Grigera, juan@biophnet.unlp.edu.ar (Visual C++ version) with a copy to Scott Deifik. Other Windows32 reports may go to Darrel Hankerson.