SQLite

# build on the target system.  Some of the C source code and header
# files are automatically generated.  This target takes care of
# all that automatic generation.
#
target_source:	$(SRC)
	rm -rf tsrc
	mkdir tsrc
	cp -f $(SRC) $(TOP)/src/*.h tsrc 2>/dev/null
	rm tsrc/sqlite.h.in tsrc/parse.y

sqlite3.c:	target_source $(TOP)/tool/mksqlite3c.tcl
	tclsh $(TOP)/tool/mksqlite3c.tcl

# Rules to build the LEMON compiler generator
#
lemon:	$(TOP)/tool/lemon.c $(TOP)/tool/lempar.c
	$(BCC) -o lemon $(TOP)/tool/lemon.c
	cp $(TOP)/tool/lempar.c .

#!/usr/bin/tclsh
#
# To build a single huge source file holding all of SQLite (or at
# least the core components - the test harness, shell, and TCL 
# interface are omitted.) first do
#
#      make target_source
#
# The make target above moves all of the source code files into
# a subdirectory named "tsrc".  (This script expects to find the files
# there and will not work if they are not found.)  There are a few
# generated C code files that are also added to the tsrc directory.
# For example, the "parse.c" and "parse.h" files to implement the
# the parser are derived from "parse.y" using lemon.  And the 
# "keywordhash.h" files is generated by a program named "mkkeywordhash".
#
# After the "tsrc" directory has been created and populated, run
# this script:
#
#      tclsh mksqlite3c.tcl
#
# The amalgamated SQLite code will be written into sqlite3.c
#

# Begin by reading the "sqlite3.h" header file.  Count the number of lines
# in this file and extract the version number.  That information will be
# needed in order to generate the header of the amalgamation.
#
set in [open tsrc/sqlite3.h]
set cnt 0
set VERSION ?????
while {![eof $in]} {
  set line [gets $in]
  if {$line=="" && [eof $in]} break
  incr cnt
  regexp {#define\s+SQLITE_VERSION\s+"(.*)"} $line all VERSION
}
close $in

# Open the output file and write a header comment at the beginning
# of the file.
#
set out [open sqlite3.c w]
set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1]
puts $out [subst \
{/******************************************************************************
** This file is a amalgamation of many separate C source files from SQLite
** version $VERSION.  By combining all the individual C code files into this 
** single large file, the entire code can be compiled as a one translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% are more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other
** programs, you need this file and the "sqlite3.h" header file that defines
** the programming interface to the SQLite library.  (If you do not have 
** the "sqlite3.h" header file at hand, you will find a copy in the first
** $cnt lines past the header of this amalgamation.)  Additional code
** files may be needed if you want a wrapper to interface SQLite with your
** choice of programming language.  The code for the "sqlite3" command-line
** shell is also in a separate file.  This file contains only code for the
** core SQLite library.
**
** This amalgamation was generated on $today.
*/}]

# These are the header files used by SQLite.  The first time any of these 
# files are seen in a #include statement in the C code, include the complete
# text of the file in-line.  The file only needs to be included once.
#
foreach hdr {
   btree.h

   sqlite3.h
   sqliteInt.h
   vdbe.h
   vdbeInt.h
} {
  set available_hdr($hdr) 1
}
set available_hdr(sqlite3.h) 0

# 78 stars used for comment formatting.
set s78 \
{*****************************************************************************}

# Insert a comment into the code
#

# Process the source files.  Process files containing commonly
# used subroutines first in order to help the compiler find
# inlining opportunities.
#
foreach file {
   sqlite3.h

   os.c

   printf.c
   random.c
   utf.c
   util.c
   hash.c