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revision 155 by ph10, Tue Apr 24 13:36:11 2007 UTC revision 287 by ph10, Tue Dec 18 20:11:28 2007 UTC
# Line 7  This document contains the following sec Line 7  This document contains the following sec
7    Generic instructions for the PCRE C library    Generic instructions for the PCRE C library
8    The C++ wrapper functions    The C++ wrapper functions
9    Building for virtual Pascal    Building for virtual Pascal
10      Stack size in Windows environments
11    Comments about Win32 builds    Comments about Win32 builds
12      Building PCRE with CMake
13    Building under Windows with BCC5.5    Building under Windows with BCC5.5
14    Building PCRE on OpenVMS    Building PCRE on OpenVMS
15    
16    
17  GENERAL  GENERAL
18    
19  I (Philip Hazel) have no knowledge of Windows or VMS sytems and how their  I (Philip Hazel) have no experience of Windows or VMS sytems and how their
20  libraries work. The items in the PCRE distribution and Makefile that relate to  libraries work. The items in the PCRE distribution and Makefile that relate to
21  anything other than Unix-like systems are untested by me.  anything other than Unix-like systems are untested by me.
22    
# Line 29  library consists entirely of code writte Line 31  library consists entirely of code writte
31  successfully on any system that has a Standard C compiler and library. The C++  successfully on any system that has a Standard C compiler and library. The C++
32  wrapper functions are a separate issue (see below).  wrapper functions are a separate issue (see below).
33    
34  The PCRE distribution contains some experimental support for "cmake", but this  The PCRE distribution includes support for CMake. This support is relatively
35  is incomplete and not documented. However if you are a "cmake" user you might  new, but has already been used successfully to build PCRE in multiple build
36  like to try building with "cmake".  environments on Windows. There are some instructions in the section entitled
37    "Building PCRE with CMake" below.
38    
39    
40  GENERIC INSTRUCTIONS FOR THE PCRE C LIBRARY  GENERIC INSTRUCTIONS FOR THE PCRE C LIBRARY
41    
42  The following are generic comments about building the PCRE C library "by hand".  The following are generic comments about building the PCRE C library "by hand".
43    
44  (1) Copy or rename the file config.h.generic as config.h, and edit the macro   (1) Copy or rename the file config.h.generic as config.h, and edit the macro
45      settings that it contains to whatever is appropriate for your environment.       settings that it contains to whatever is appropriate for your environment.
46      In particular, if you want to force a specific value for newline, you can       In particular, if you want to force a specific value for newline, you can
47      define the NEWLINE macro.       define the NEWLINE macro. When you compile any of the PCRE modules, you
48         must specify -DHAVE_CONFIG_H to your compiler so that config.h is included
49      An alternative approach is not to edit config.h, but to use -D on the       in the sources.
50      compiler command line to make any changes that you need.  
51         An alternative approach is not to edit config.h, but to use -D on the
52  (2) Copy or rename the file pcre.h.generic as pcre.h.       compiler command line to make any changes that you need to the
53         configuration options. In this case -DHAVE_CONFIG_H must not be set.
54  (3) EITHER:  
55        Copy or rename file pcre_chartables.c.dist as pcre_chartables.c.       NOTE: There have been occasions when the way in which certain parameters
56         in config.h are used has changed between releases. (In the configure/make
57      OR:       world, this is handled automatically.) When upgrading to a new release,
58        Compile dftables.c as a stand-alone program, and then run it with the       you are strongly advised to review config.h.generic before re-using what
59        single argument "pcre_chartables.c". This generates a set of standard       you had previously.
60        character tables and writes them to that file. The tables are generated  
61        using the default C locale for your system. If you want to use a locale   (2) Copy or rename the file pcre.h.generic as pcre.h.
62        that is specified by LC_xxx environment variables, add the -L option to  
63        the dftables command. You must use this method if you are building on   (3) EITHER:
64        a system that uses EBCDIC code.         Copy or rename file pcre_chartables.c.dist as pcre_chartables.c.
65    
66      The tables in pcre_chartables.c are defaults. The caller of PCRE can       OR:
67      specify alternative tables at run time.         Compile dftables.c as a stand-alone program (using -DHAVE_CONFIG_H if
68           you have set up config.h), and then run it with the single argument
69  (4) Compile the following source files:         "pcre_chartables.c". This generates a set of standard character tables
70           and writes them to that file. The tables are generated using the default
71        pcre_chartables.c         C locale for your system. If you want to use a locale that is specified
72        pcre_compile.c         by LC_xxx environment variables, add the -L option to the dftables
73        pcre_config.c         command. You must use this method if you are building on a system that
74        pcre_dfa_exec.c         uses EBCDIC code.
75        pcre_exec.c  
76        pcre_fullinfo.c       The tables in pcre_chartables.c are defaults. The caller of PCRE can
77        pcre_get.c       specify alternative tables at run time.
78        pcre_globals.c  
79        pcre_info.c   (4) Ensure that you have the following header files:
80        pcre_maketables.c  
81        pcre_newline.c         pcre_internal.h
82        pcre_ord2utf8.c         ucp.h
83        pcre_refcount.c         ucpinternal.h
84        pcre_study.c         ucptable.h
85        pcre_tables.c  
86        pcre_try_flipped.c   (5) Also ensure that you have the following file, which is #included as source
87        pcre_ucp_searchfuncs.c       when building a debugging version of PCRE, and is also used by pcretest.
88        pcre_valid_utf8.c  
89        pcre_version.c         pcre_printint.src
90        pcre_xclass.c  
91     (6) Compile the following source files, setting -DHAVE_CONFIG_H as a compiler
92      Now link them all together into an object library in whichever form your       option if you have set up config.h with your configuration, or else use
93      system keeps such libraries. This is the basic PCRE C library. If your       other -D settings to change the configuration as required.
94      system has static and shared libraries, you may have to do this once for  
95      each type.         pcre_chartables.c
96           pcre_compile.c
97  (5) Similarly, compile pcreposix.c and link it (on its own) as the pcreposix         pcre_config.c
98      library.         pcre_dfa_exec.c
99           pcre_exec.c
100  (6) Compile the test program pcretest.c. This needs the functions in the         pcre_fullinfo.c
101      pcre and pcreposix libraries when linking.         pcre_get.c
102           pcre_globals.c
103  (7) Run pcretest on the testinput files in the testdata directory, and check         pcre_info.c
104      that the output matches the corresponding testoutput files. Note that the         pcre_maketables.c
105      supplied files are in Unix format, with just LF characters as line         pcre_newline.c
106      terminators. You may need to edit them to change this if your system uses a         pcre_ord2utf8.c
107      different convention.         pcre_refcount.c
108           pcre_study.c
109           pcre_tables.c
110           pcre_try_flipped.c
111           pcre_ucp_searchfuncs.c
112           pcre_valid_utf8.c
113           pcre_version.c
114           pcre_xclass.c
115    
116         Make sure that you include -I. in the compiler command (or equivalent for
117         an unusual compiler) so that all included PCRE header files are first
118         sought in the current directory. Otherwise you run the risk of picking up
119         a previously-installed file from somewhere else.
120    
121     (7) Now link all the compiled code into an object library in whichever form
122         your system keeps such libraries. This is the basic PCRE C library. If
123         your system has static and shared libraries, you may have to do this once
124         for each type.
125    
126     (8) Similarly, compile pcreposix.c (remembering -DHAVE_CONFIG_H if necessary)
127         and link the result (on its own) as the pcreposix library.
128    
129     (9) Compile the test program pcretest.c (again, don't forget -DHAVE_CONFIG_H).
130         This needs the functions in the pcre and pcreposix libraries when linking.
131         It also needs the pcre_printint.src source file, which it #includes.
132    
133    (10) Run pcretest on the testinput files in the testdata directory, and check
134         that the output matches the corresponding testoutput files. Note that the
135         supplied files are in Unix format, with just LF characters as line
136         terminators. You may need to edit them to change this if your system uses
137         a different convention. If you are using Windows, you probably should use
138         the wintestinput3 file instead of testinput3 (and the corresponding output
139         file). This is a locale test; wintestinput3 sets the locale to "french"
140         rather than "fr_FR", and there some minor output differences.
141    
142  (8) If you want to use the pcregrep command, compile and link pcregrep.c; it  (11) If you want to use the pcregrep command, compile and link pcregrep.c; it
143      uses only the basic PCRE library (it does not need the pcreposix library).       uses only the basic PCRE library (it does not need the pcreposix library).
144    
145    
146  THE C++ WRAPPER FUNCTIONS  THE C++ WRAPPER FUNCTIONS
# Line 125  additional files. The following files in Line 161  additional files. The following files in
161  for use with VP/Borland: makevp_c.txt, makevp_l.txt, makevp.bat, pcregexp.pas.  for use with VP/Borland: makevp_c.txt, makevp_l.txt, makevp.bat, pcregexp.pas.
162    
163    
164  COMMENTS ABOUT WIN32 BUILDS  STACK SIZE IN WINDOWS ENVIRONMENTS
165    
166  There are two ways of building PCRE using the "congifure, make, make install"  The default processor stack size of 1Mb in some Windows environments is too
167    small for matching patterns that need much recursion. In particular, test 2 may
168    fail because of this. Normally, running out of stack causes a crash, but there
169    have been cases where the test program has just died silently. See your linker
170    documentation for how to increase stack size if you experience problems. The
171    Linux default of 8Mb is a reasonable choice for the stack, though even that can
172    be too small for some pattern/subject combinations.
173    
174    PCRE has a compile configuration option to disable the use of stack for
175    recursion so that heap is used instead. However, pattern matching is
176    significantly slower when this is done. There is more about stack usage in the
177    "pcrestack" documentation.
178    
179    
180    COMMENTS ABOUT WIN32 BUILDS (see also "BUILDING PCRE WITH CMAKE" below)
181    
182    There are two ways of building PCRE using the "configure, make, make install"
183  paradigm on Windows systems: using MinGW or using Cygwin. These are not at all  paradigm on Windows systems: using MinGW or using Cygwin. These are not at all
184  the same thing; they are completely different from each other. There is also  the same thing; they are completely different from each other. There is also
185  some experimental, undocumented support for building using "cmake", which you  some experimental, undocumented support for building using "cmake", which you
# Line 159  On both MinGW and Cygwin, PCRE should bu Line 211  On both MinGW and Cygwin, PCRE should bu
211    ./configure && make && make install    ./configure && make && make install
212    
213  This should create two libraries called libpcre and libpcreposix, and, if you  This should create two libraries called libpcre and libpcreposix, and, if you
214  have enabled building the C++ wrapper, a third one called libpcrecpp.  have enabled building the C++ wrapper, a third one called libpcrecpp. These are
215    independent libraries: when you like with libpcreposix or libpcrecpp you must
216    also link with libpcre, which contains the basic functions. (Some earlier
217    releases of PCRE included the basic libpcre functions in libpcreposix. This no
218    longer happens.)
219    
220  If you want to statically link your program against a non-dll .a file, you must  If you want to statically link your program against a non-dll .a file, you must
221  define PCRE_STATIC before including pcre.h, otherwise the pcre_malloc() and  define PCRE_STATIC before including pcre.h, otherwise the pcre_malloc() and
# Line 196  terminators in order to get some of the Line 252  terminators in order to get some of the
252  things in this area in future.  things in this area in future.
253    
254    
255    BUILDING PCRE WITH CMAKE
256    
257    CMake is an alternative build facility that can be used instead of the
258    traditional Unix "configure". CMake version 2.4.7 supports Borland makefiles,
259    MinGW makefiles, MSYS makefiles, NMake makefiles, UNIX makefiles, Visual Studio
260    6, Visual Studio 7, Visual Studio 8, and Watcom W8. The following instructions
261    were contributed by a PCRE user.
262    
263    1. Download CMake 2.4.7 or above from http://www.cmake.org/, install and ensure
264       that cmake\bin is on your path.
265    
266    2. Unzip (retaining folder structure) the PCRE source tree into a source
267       directory such as C:\pcre.
268    
269    3. Create a new, empty build directory: C:\pcre\build\
270    
271    4. Run CMakeSetup from the Shell envirornment of your build tool, e.g., Msys
272       for Msys/MinGW or Visual Studio Command Prompt for VC/VC++
273    
274    5. Enter C:\pcre\pcre-xx and C:\pcre\build for the source and build
275       directories, respectively
276    
277    6. Hit the "Configure" button.
278    
279    7. Select the particular IDE / build tool that you are using (Visual Studio,
280       MSYS makefiles, MinGW makefiles, etc.)
281    
282    8. The GUI will then list several configuration options. This is where you can
283       enable UTF-8 support, etc.
284    
285    9. Hit "Configure" again. The adjacent "OK" button should now be active.
286    
287    10. Hit "OK".
288    
289    11. The build directory should now contain a usable build system, be it a
290        solution file for Visual Studio, makefiles for MinGW, etc.
291    
292    Testing with RunTest.bat
293    
294    1. Copy RunTest.bat into the directory where pcretest.exe has been created.
295    
296    2. Edit RunTest.bat and insert a line that indentifies the relative location of
297       the pcre source, e.g.:
298    
299       set srcdir=..\pcre-7.4-RC3
300    
301    3. Run RunTest.bat from a command shell environment. Test outputs will
302       automatically be compared to expected results, and discrepancies will
303       identified in the console output.
304    
305    4. To test pcrecpp, run pcrecpp_unittest.exe, pcre_stringpiece_unittest.exe and
306       pcre_scanner_unittest.exe.
307    
308    
309  BUILDING UNDER WINDOWS WITH BCC5.5  BUILDING UNDER WINDOWS WITH BCC5.5
310    
311  Michael Roy sent these comments about building PCRE under Windows with BCC5.5:  Michael Roy sent these comments about building PCRE under Windows with BCC5.5:
# Line 274  $! Locale could not be set to fr Line 384  $! Locale could not be set to fr
384  $!  $!
385  =========================  =========================
386    
387  Last Updated: 24 April 2007  Last Updated: 21 September 2007
388  ****  ****
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