This directory contains a version of LibPCRE 7.6 that has been stripped
down to less than a third of its original uncompressed size.  So if you
want docs, tests and such, you should go to the PCRE website at
http://www.pcre.org .  Here are the changes for the Nmap version:

o Started this NMAP_MODIFICATIONS file

o Removed these directories:
cmake
doc
testdata

o Removed these files:
pcretest.c
pcregrep.c
pcredemo.c
RunGrepTest
RunTest
RunTest.bat
perltest.pl
Detrail
PrepareRelease
libpcre.pc.in
libpcrecpp.pc.in
pcre_printint.src
CMakeLists.txt
config-cmake.h.in
132html
makevp.bat
makevp_c.txt
makevp_l.txt
pcregexp.pas
ltmain.sh
CleanTxt
ChangeLog
NEWS
HACKING
COPYING [Look at LICENCE]

o Got rid of the C++ wrapper, which included this step:
  rm -f *.cc pcrecpparg.h.in pcrecpp.h pcrecpp_internal.h pcre_scanner.h pcre_stringpiece.h.in

o Copied pcre.h.generic to pcre.h and pcre_chartables.c.dist to, you
  guessed it, pcre_chartables.c (for Windows).  Running ./configure in
  UNIX just overwrites them with other ones. Made the rule that makes
  pcre_chartables.c copy pcre_chartables.c.dist instead of making a
  symbolic link to it. Remove pcre_chartables.c from CLEANFILES.

o Stripped down Makefile.am and configure.ac substantially to remove
  libtool dependency (was having trouble on Mac OS X), remove Windows
  stuff (Nmap uses a custom MS VC project for this), and insure it only
  worries about building libpcre.a (which is now build in the libpcre
  directory rather than in libpcre/.libs ).  Removed quite a bit of
  unneeded things from these files, as well as adding -fno-thread-jumps
  when compiling on Mac OS X on Intel (original patch: Kurt Grutzmacher
  grutz(a)jingojango.net).  [The diff is FAR too large to included here]

o Removed config.sub, config.guess, depcomp, install-sh, and missing.
  These files are found in the parent (i.e., Nmap's) directory.

o Comment out some build configuration lines from pcre_internal.h because Nmap
  builds a static library:

--- pcre-7.6/pcre_internal.h	2008-01-20 13:59:21.000000000 -0600
+++ libpcre/pcre_internal.h	2008-02-15 18:12:28.000000000 -0600
@@ -108,15 +108,19 @@ PCRE_EXP_DATA_DEFN only if they are not 
 
 #ifndef PCRE_EXP_DECL
 #  ifdef _WIN32
+/* COMMENTED OUT AS IT'S COMPILED STATICALLY
 #    ifndef PCRE_STATIC
 #      define PCRE_EXP_DECL       extern __declspec(dllexport)
 #      define PCRE_EXP_DEFN       __declspec(dllexport)
 #      define PCRE_EXP_DATA_DEFN  __declspec(dllexport)
 #    else
+*/
 #      define PCRE_EXP_DECL       extern
 #      define PCRE_EXP_DEFN
 #      define PCRE_EXP_DATA_DEFN
+/*
 #    endif
+*/
 #  else
 #    ifdef __cplusplus
 #      define PCRE_EXP_DECL       extern "C"


...and pcre.h.in/pcre.h.generic/pcre.h:


--- pcre-7.6/pcre.h.in	2008-01-20 14:01:08.000000000 -0600
+++ libpcre/pcre.h.in	2008-02-15 18:12:54.000000000 -0600
@@ -51,6 +51,7 @@ imported have to be identified as such. 
 export setting is defined in pcre_internal.h, which includes this file. So we
 don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL. */
 
+/*
 #if defined(_WIN32) && !defined(PCRE_STATIC)
 #  ifndef PCRE_EXP_DECL
 #    define PCRE_EXP_DECL  extern __declspec(dllimport)
@@ -64,6 +65,7 @@ don't change existing definitions of PCR
 #    endif
 #  endif
 #endif
+*/
 
 /* By default, we use the standard "extern" declarations. */
 

..and pcreposix.h:


--- pcre-7.6/pcreposix.h	2008-01-20 13:56:29.000000000 -0600
+++ libpcre/pcreposix.h	2008-02-15 18:13:29.000000000 -0600
@@ -110,10 +110,12 @@ imported have to be identified as such. 
 export settings are needed, and are set in pcreposix.c before including this
 file. */
 
+/*
 #if defined(_WIN32) && !defined(PCRE_STATIC) && !defined(PCREPOSIX_EXP_DECL)
 #  define PCREPOSIX_EXP_DECL  extern __declspec(dllimport)
 #  define PCREPOSIX_EXP_DEFN  __declspec(dllimport)
 #endif
+*/
 
 /* By default, we use the standard "extern" declarations. */
 

o Added pcre_winconfig.h for Windows.  LibPCRE used to include config.h in
  pcre_internal.h, and we'd include this winconfig there instead of config.h
  if WIN32 is defined.  Now, however, they've moved config.h includes to a
  bunch of different files, so we have to change them.  We could remove the
  other includes and move it back to pcre_internal.h, but they must've moved
  them for a reason, so we'll follow them.  Occurrences of

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

  get changed to

#ifdef WIN32
#include "pcre_winconfig.h"
#else
#include "config.h"
#endif


o Regenerated everything with 'automake; aclocal; autoconf'

