SQLite3.c中的一个bug:error: expected value in expression #if

I got a error: expected value in expression #if SQLITE_HAS_CODEC after I add the code in sqlite3.c as below:

#ifndef SQLITE_HAS_CODEC
#define SQLITE_HAS_CODEC
#endif

so I try to get the latest sqlite3.c as below:

tar xzf sqlite.tar.gz    ;# Unpack the source tree into "sqlite"
    mkdir bld                ;# Build will occur in a sibling directory
    cd bld                   ;# Change to the build directory
    ../sqlite/configure      ;# Run the configure script
    make                     ;# Run the makefile.
    make sqlite3.c           ;# Build the "amalgamation" source file
    make test                ;# Run some tests (requires Tcl)

I find out the result:

?  bld cat sqlite3.c |grep '#if SQLITE_HAS_CODEC'
#if SQLITE_HAS_CODEC
#if SQLITE_HAS_CODEC
#if SQLITE_HAS_CODEC 
#if SQLITE_HAS_CODEC

（编辑：李大同）

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