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Newsgroups: comp.os.msdos.djgpp
Date: Wed, 22 Feb 2023 06:57:15 -0800 (PST)
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Subject: Re: compilation of sqlite3 on dos using djgpp
From: "HILMAN AHWAS A. (hilmanahwaa AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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On Monday, February 18, 2013 at 2:02:33 AM UTC+7, <@email omitted> wrote:
> Well, on a lazy Sunday afternoon I tried to compile SQLite too. 
> 
> The following steps allowed to compile it: 
> 
> 1. run "configure --disable-threadsafe" 
> 
> 2. modify this in sqlite3.c: 
> 
> #ifdef __DJGPP__ 
> { "fstat", 0, 0 }, 
> //#define osFstat(a,b,c) 0 
> #define osFstat(a,b) 0 //djgpp - replacing above 
> #define MAP_SHARED 0 
> #define MAP_FAILED 0 
> #define ETIMEDOUT 9000 //unused number 
> #define ENOTCONN 9001 //unused number 
> 
> #else 
> 
> 3. take out munmap: 
> 
> for(i=0; i<p->nRegion; i++){ 
> if( p->h>=0 ){ 
> //djgpp munmap(p->apRegion[i], p->szRegion); 
> }else{ 
> sqlite3_free(p->apRegion[i]); 
> } 
> } 
> 
> 4. take out mmap: 
> 
> if( pShmNode->h>=0 ){ 
> /* djgpp 
> pMem = mmap(0, szRegion, 
> pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, 
> MAP_SHARED, pShmNode->h, szRegion*(i64)pShmNode->nRegion 
> ); 
> */ 
> if( pMem==MAP_FAILED ){ 
> rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename); 
> goto shmpage_out; 
> } 
> 
> 
> Then it did compile and seemed to work so far. The library does not use mmap, only the shell program sqlite3.exe does and I guess that will work so far without mmap in DOS. 
> 
> Georg

Where do I place those lines of code?