[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
On Tue, Oct 27, 2015 at 11:05 PM, James K. Lowden wrote: > On Tue, 27 Oct 2015 12:24:03 +0100 Clemens Ladisch > wrote: > > > You've solved the problem by compiling for a > single-threaded environment. > > No; the single-threaded environment is the problem. > > That's a matter of opinion. Another way to look at it: threads set > back computing by 20 years. > > Protected memory was invented for good reason. Then it was uninvented, > and we're still dealing with the fallout. Software transactional > memory has so far failed to pass muster, and communicating sequential > processes has still not seen implementation support in most languages. Most languages, true. But one (new'ish) language, Go [1], embraced CSP from the get go [2]. This talk [3] by Rob Pike, one of the three fathers of Go, featured on the front page [1] discusses specifically Go's CSP implementation. It goes hand-in-hand with this other "classical" Go talk [4]: Concurrency Is Not Parallelism. [1] https://golang.org/ [2] https://blog.golang.org/share-memory-by-communicating [3] https://www.youtube.com/watch?v=f6kdp27TYZs [4] https://www.youtube.com/watch?v=cN_DpYBzKso
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
On Tue, 27 Oct 2015 12:24:03 +0100 Clemens Ladisch wrote: > > You've solved the problem by compiling for a single-threaded > > environment. > > No; the single-threaded environment is the problem. That's a matter of opinion. Another way to look at it: threads set back computing by 20 years. Protected memory was invented for good reason. Then it was uninvented, and we're still dealing with the fallout. Software transactional memory has so far failed to pass muster, and communicating sequential processes has still not seen implementation support in most languages. --jkl
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
James K. Lowden wrote: > On Thu, 22 Oct 2015 15:23:38 +0200 > "Marco Turco" wrote: >> The problem is when I link the generated library. I receive the >> following error related to the first two warnings so I'm unable to >> generate the executable file. > > You've solved the problem by compiling for a single-threaded > environment. No; the single-threaded environment is the problem. >> Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function >> '_endthreadex' with no prototype in function sqlite3ThreadProc > > That indicates you're notincluding the .h file that declares the > _endthreadex function. _endthreadex is declared in process.h, which SQLite includes. However, that header takes care to omit this declaration when compiling in single-threaded mode. Regards, Clemens
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
On Thu, 22 Oct 2015 15:23:38 +0200 "Marco Turco" wrote: > The problem is when I link the generated library. I receive the > following error related to the first two warnings so I'm unable to > generate the executable file. You've solved the problem by compiling for a single-threaded environment. I wanted to point you toward the generic solution to the warnings and errors in case you want to use __beginthreadex. I suspect the advice you got about changing your compiler switches is correct; that's what you would do with Microsoft's compiler. > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function > '_endthreadex' with no prototype in function sqlite3ThreadProc That indicates you're notincluding the .h file that declares the _endthreadex function. Unlike some other advice you might get, I'm not so sanguine about prototype warnings. The C language permits, but does not require, the use of functional prototypes. When you ignore a warning about a missing prototype, you deny yourself the parameter checking the compiler could otherwise provide. > Error: Unresolved external '__endthreadex' > referenced from K:\ACTIVEXP\SOURCE\SQLITE.SEE\SQLITE3.LIB|sqlite3 To be pedantic, that is a linker error, not a compiler error. In this case you're missing the library that supplies _endthreadex. According to Microsoft [1], it's supplied by the C run-time library. That almost certainly means you need to set your compile options accordingly. Why change compilation just to link to another library? Normally you don't; you just add a library name to the linker command. In the case of Microsoft and the C runtime, though, some of the symbols differ between single- and multi-threaded (and release and debug) builds. You call function foo, but it might generate e.g. foo_debug_mt, or might issue locks, or might replace the call with a bullt-in intrinsic or macro. That's why Microsoft (and likely Embarcadero) use a compiler option. Because of the tight coupling of compile modes and required library, they need to be controlled together, and the simplest way to do that is to give one option to the compiler and let it DTRT. > At the end I have added the parameter -DSQLITE_THREADSAFE=0 to > exclude the multithread code from the library Yup, that's the other way; change the SQLite code to be single-threaded. HTH. --jkl [1] https://msdn.microsoft.com/en-us/library/hw264s73.aspx
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
Solved. At the end I have added the parameter -DSQLITE_THREADSAFE=0 to exclude the multithread code from the library Thank you. Marco -Original Message- From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of Clemens Ladisch Sent: Thursday, October 22, 2015 8:51 PM To: sqlite-users at mailinglists.sqlite.org Subject: Re: [sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00 Marco Turco wrote: > could you please give me the full Bcc32 string you are using ? That would not be useful for you; I'm using an incompatible calling convention. Just replace "-tW" with "-tWM". Regards, Clemens ___ sqlite-users mailing list sqlite-users at mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
Marco Turco wrote: > could you please give me the full Bcc32 string you are using ? That would not be useful for you; I'm using an incompatible calling convention. Just replace "-tW" with "-tWM". Regards, Clemens
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
Hi, could you please give me the full Bcc32 string you are using ? thank you Marco -Original Message- From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of Clemens Ladisch Sent: Thursday, October 22, 2015 4:22 PM To: sqlite-users at mailinglists.sqlite.org Subject: Re: [sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00 Marco Turco wrote: > I'm trying to generate the sqlite3 library but there is no way with > Embercadero C++ 7.00. > > I always receive some warnings and the first two related to the > _endthreadex' and '_beginthreadex' cannot permit to link me the library. > > k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW > -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF > -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 > -Ik:\BCC70\Include;k:\XHARBOUR\Include > -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c My Borland C++ 5.5.1 (the old, free version) needs -tWM for a multithreaded program; you're using -tW. Regards, Clemens ___ sqlite-users mailing list sqlite-users at mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
Marco Turco wrote: > I'm trying to generate the sqlite3 library but there is no way with > Embercadero C++ 7.00. > > I always receive some warnings and the first two related to the > _endthreadex' and '_beginthreadex' cannot permit to link me the library. > > k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW > -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF > -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 -Ik:\BCC70\Include;k:\XHARBOUR\Include > -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c My Borland C++ 5.5.1 (the old, free version) needs -tWM for a multithreaded program; you're using -tW. Regards, Clemens
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
The problem is when I link the generated library. I receive the following error related to the first two warnings so I'm unable to generate the executable file. Embarcadero C++ 7.00 for Win32 Copyright (c) 1993-2015 Embarcadero Technologies, Inc. K:\RENTMNG\Obj\mod306f.c: k:\BCC70\Bin\iLink32.Exe -Gn -aa -Tpe -s @K:\RENTMNG\RENTMNG.bcl Turbo Incremental Link 6.70 Copyright (c) 1997-2014 Embarcadero Technologies, Inc. Error: Unresolved external '__endthreadex' referenced from K:\ACTIVEXP\SOURCE\SQLITE.SEE\SQLITE3.LIB|sqlite3 Error: Unresolved external '__beginthreadex' referenced from K:\ACTIVEXP\SOURCE\SQLITE.SEE\SQLITE3.LIB|sqlite3 Error: Unable to perform link Marco -Original Message- From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of R.Smith Sent: Thursday, October 22, 2015 12:12 PM To: sqlite-users at mailinglists.sqlite.org Subject: Re: [sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00 On 2015-10-22 11:01 AM, Marco Turco wrote: > Hi all, > > I'm trying to generate the sqlite3 library but there is no way with > Embercadero C++ 7.00. > > I always receive some warnings and the first two related to the > _endthreadex' and '_beginthreadex' cannot permit to link me the library. > > > > See below. > > > > k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW > -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF > -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 > -Ik:\BCC70\Include;k:\XHARBOUR\Include > -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c > > > > Embarcadero C++ 7.00 for Win32 Copyright (c) 1993-2015 Embarcadero > Technologies, Inc. > > K:\sqlite_see_2013\sqlite3.c: > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function > '_endthreadex' with no prototype in function sqlite3ThreadProc > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23936: Call to function > '_beginthreadex' with no prototype in function sqlite3ThreadCreate > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 38624: Parameter 'iOff' is > never used in function winUnfetch > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 80952: Possibly incorrect > assignment in function vdbeSorterCompareInt > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 82583: Possibly incorrect > assignment in function vdbeSorterSetupMerge > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 185433: Parameter 'iDb' is > never used in function sqlite3CodecGetKey > > k:\BCC70\Bin\TLib.Exe K:\sqlite_see_2013\sqlite_see_2013.Lib /P512 > @K:\sqlite_see_2013\sqlite_see_2013.bcl , > K:\sqlite_see_2013\Debug\sqlite_see_2013.Lst These are just warnings... They are not important and it should still compile. If it fails to compile you should get a message like this: "Error : Failed to compile K:\sqlite_see_2013\sqlite3.c 185433: Some description of what failed" The warnings doesn't mean it did not compile. What makes you think the file failed to compile, is the actual compiled file missing or such? > > > > TLIB 6.4 Copyright (c) 1987-2014 Embarcadero Technologies, Inc. > > +K:\sqlite_see_2013\Obj\sqlite3.Obj > > > > Any help ? Thank you in advance > > > > Marco > > ___ > sqlite-users mailing list > sqlite-users at mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users at mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
On 2015-10-22 11:01 AM, Marco Turco wrote: > Hi all, > > I'm trying to generate the sqlite3 library but there is no way with > Embercadero C++ 7.00. > > I always receive some warnings and the first two related to the > _endthreadex' and '_beginthreadex' cannot permit to link me the library. > > > > See below. > > > > k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW > -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF > -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 -Ik:\BCC70\Include;k:\XHARBOUR\Include > -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c > > > > Embarcadero C++ 7.00 for Win32 Copyright (c) 1993-2015 Embarcadero > Technologies, Inc. > > K:\sqlite_see_2013\sqlite3.c: > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function > '_endthreadex' with no prototype in function sqlite3ThreadProc > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23936: Call to function > '_beginthreadex' with no prototype in function sqlite3ThreadCreate > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 38624: Parameter 'iOff' is never > used in function winUnfetch > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 80952: Possibly incorrect > assignment in function vdbeSorterCompareInt > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 82583: Possibly incorrect > assignment in function vdbeSorterSetupMerge > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 185433: Parameter 'iDb' is never > used in function sqlite3CodecGetKey > > k:\BCC70\Bin\TLib.Exe K:\sqlite_see_2013\sqlite_see_2013.Lib /P512 > @K:\sqlite_see_2013\sqlite_see_2013.bcl , > K:\sqlite_see_2013\Debug\sqlite_see_2013.Lst These are just warnings... They are not important and it should still compile. If it fails to compile you should get a message like this: "Error : Failed to compile K:\sqlite_see_2013\sqlite3.c 185433: Some description of what failed" The warnings doesn't mean it did not compile. What makes you think the file failed to compile, is the actual compiled file missing or such? > > > > TLIB 6.4 Copyright (c) 1987-2014 Embarcadero Technologies, Inc. > > +K:\sqlite_see_2013\Obj\sqlite3.Obj > > > > Any help ? Thank you in advance > > > > Marco > > ___ > sqlite-users mailing list > sqlite-users at mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
Hi all, I'm trying to generate the sqlite3 library but there is no way with Embercadero C++ 7.00. I always receive some warnings and the first two related to the _endthreadex' and '_beginthreadex' cannot permit to link me the library. See below. k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 -Ik:\BCC70\Include;k:\XHARBOUR\Include -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c Embarcadero C++ 7.00 for Win32 Copyright (c) 1993-2015 Embarcadero Technologies, Inc. K:\sqlite_see_2013\sqlite3.c: Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function '_endthreadex' with no prototype in function sqlite3ThreadProc Warning W8065 K:\sqlite_see_2013\sqlite3.c 23936: Call to function '_beginthreadex' with no prototype in function sqlite3ThreadCreate Warning W8057 K:\sqlite_see_2013\sqlite3.c 38624: Parameter 'iOff' is never used in function winUnfetch Warning W8060 K:\sqlite_see_2013\sqlite3.c 80952: Possibly incorrect assignment in function vdbeSorterCompareInt Warning W8060 K:\sqlite_see_2013\sqlite3.c 82583: Possibly incorrect assignment in function vdbeSorterSetupMerge Warning W8057 K:\sqlite_see_2013\sqlite3.c 185433: Parameter 'iDb' is never used in function sqlite3CodecGetKey k:\BCC70\Bin\TLib.Exe K:\sqlite_see_2013\sqlite_see_2013.Lib /P512 @K:\sqlite_see_2013\sqlite_see_2013.bcl , K:\sqlite_see_2013\Debug\sqlite_see_2013.Lst TLIB 6.4 Copyright (c) 1987-2014 Embarcadero Technologies, Inc. +K:\sqlite_see_2013\Obj\sqlite3.Obj Any help ? Thank you in advance Marco
[sqlite] Problems making sqlite.lib using Embarcadero C++ 7.00
I am using Embarcadero's development studio and compiling in the sqlite amalgamation. You can just turn off those two warnings. To turn it off for whole project: Select the Projects menu Options Under the C++ Compiler options select the warnings Open the options for selected warnings. scroll down to those two warnings and disable them. To turn off the warnings just for sqlite, just right click on the sqlite.c file name, select the local options. the same project options menu opens, but will apply only to that file. If you try to compile the SQLite amalgamation with all warnings on, you will get over 600 of them. Most warnings are for unused variables, and variables that are assigned a value but never used I examined those particular ones. It is due to assigning a variable within an 'if'. Although it has double parenthesis around it, which is supposed to indicate that the assignment is intended, it still gives the warning for some reason on some of them. That is an important warning as that is usually a nasty bug where a single equals is used instead of a double equals for an equivalence comparison. Although that style makes for more compact code by doing the assignment at the same time as the logic test, I find that it is a safer practice to do the assignment just before the 'if' then test the variable. From a debugging point of view it is much easier to set a break point on the if statement and see the actual result being checked. I did a few compile tests. with the optimizer, the resulting compiled code was identical either way.. Scott Doctor scott at scottdoctor.com On 10/22/2015 2:01 AM, Marco Turco wrote: > Hi all, > > I'm trying to generate the sqlite3 library but there is no way with > Embercadero C++ 7.00. > > I always receive some warnings and the first two related to the > _endthreadex' and '_beginthreadex' cannot permit to link me the library. > > > > See below. > > > > k:\BCC70\Bin\Bcc32.Exe -DHB_NO_DEFAULT_API_MACROS -M -c -O2 -e -tW > -DHB_NO_DEFAULT_STACK_MACROS -DHB_OS_WIN_USED -DHB_FM_STATISTICS_OFF > -D__HARBOUR__ -DSQLITE_HAS_CODEC=1 -Ik:\BCC70\Include;k:\XHARBOUR\Include > -nK:\sqlite_see_2013\Obj K:\sqlite_see_2013\sqlite3.c > > > > Embarcadero C++ 7.00 for Win32 Copyright (c) 1993-2015 Embarcadero > Technologies, Inc. > > K:\sqlite_see_2013\sqlite3.c: > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23909: Call to function > '_endthreadex' with no prototype in function sqlite3ThreadProc > > Warning W8065 K:\sqlite_see_2013\sqlite3.c 23936: Call to function > '_beginthreadex' with no prototype in function sqlite3ThreadCreate > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 38624: Parameter 'iOff' is never > used in function winUnfetch > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 80952: Possibly incorrect > assignment in function vdbeSorterCompareInt > > Warning W8060 K:\sqlite_see_2013\sqlite3.c 82583: Possibly incorrect > assignment in function vdbeSorterSetupMerge > > Warning W8057 K:\sqlite_see_2013\sqlite3.c 185433: Parameter 'iDb' is never > used in function sqlite3CodecGetKey > > k:\BCC70\Bin\TLib.Exe K:\sqlite_see_2013\sqlite_see_2013.Lib /P512 > @K:\sqlite_see_2013\sqlite_see_2013.bcl , > K:\sqlite_see_2013\Debug\sqlite_see_2013.Lst > > > > TLIB 6.4 Copyright (c) 1987-2014 Embarcadero Technologies, Inc. > > +K:\sqlite_see_2013\Obj\sqlite3.Obj > > > > Any help ? Thank you in advance > > > > Marco > > ___ > sqlite-users mailing list > sqlite-users at mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > >
