Delphi 7: Is it possible to put a compiler conditionals in the IDE (like Tools, Environment options) rather than in a project under Project, Options, Conditionals?
We have a compiler directive that needs to be defined when compiling on developers' machines, but undefined when we build releases.
We don't want to use IFDEF DEBUG, since occasionally we ship code with debugging on.
Delphi Compiler Switches
We don't want to use an include file, because we'd risk it getting swept up into our source code control system.
Ideally, we would be able to create a compiler directive like we can an IDE environment variable where it wouldn't be saved in our source tree.
Any suggestions??
4 Answers
The solution is to use a build tool like FinalBuilder to do your building. This way you can be completely sure that you ship a good build every time, and not forget to set some option back to what it should be. I used to take a real day doing builds, now it is a click and I'm done.
Automating it will be hard (although your restriction on include files sounds a bit artifical, simply put the thing in source control and replace the version on disk with a different one during build script), why not force your individual developers to turn it on manually?
- Introduce an extra DEFINE in the build script (e.g. FINAL_BUILD)
- Introduce a compile time error in the source code forcing your developers to turn it on.
Finally, introduce a similar compile time error to make sure the FINAL_BUILD and special directive are never turned on at the same time.
You can use Conditional defines in project options
this will pass your custom defines to compiler when begin compile of project
follow this in Delphi IDEProject > Options > Delphi Compiler > Conditional defines
Of course, adding {$DEFINE MYCONDITION}
in your code would add a custom directive which you could check with {$IFDEF MYCONDITION}
but this you should already know. However, if you compile your project from the commandlineDCC32 -D MYCONDITION ..
then you can compile it with (or without) that option.
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Compiler Directives are annotations in code that are not part of the actual code flow, but influence the behavior of the compiler, for example to control options or perform Conditional Compilation.
In Oxygene, compiler directives are enclosed in curly braces (like comments) and start with a dollar symbol, for example '{$HIDE ..}'
. They can occur anywhere in code. In C# and Swift, directives start with the hash symbol (for example '#hide ..
') and must be in a fresh line, preceded only by whitespace. Case sensitivity for directives follows that of the language (case sensitive for C# and Swift, not case sensitive – but uppercase by convention – for Oxygene).
Defines and Conditional Compilation
The following directives allow you to set, unset and check for Defines for the purpose of Conditional Compilation.
{$DEFINE x}
– sets a Conditional Define{$UNDFINE x}
or{$UNDEF x}
– un-sets a Conditional Define{$IF expr}
or{$IFDEF expr}
– checks for a single define or a boolean expression combining multiple defines withAND
,OR
andNOT
. See Conditional Compilation for details.{$IFNDEF x}
– reverse of '{$IF ..}
'{$IFOPT x}
– provided for Delphi compatibility, always acts like an undefined '{$IF FALSE}
'{$ENDIF}
– closes off an '{$IF ..}
' section{$ELSE}
– closes off an '{$IF ..}
' section and starts a new section that will compile only if the '{$IF ..}
' section was false{$ELSEIF x}
– combines '{$ELSE}
' with a new '{$IF ..}
' section
#define
– sets a Conditional Define#undef
– un-sets a Conditional Define#if
or#ifdef
– checks for a single define or a boolean expression combining multiple defines with&&
,||
and!
. See Conditional Compilation for details.#endif
– closes off an '#if ..
' section#else
– closes off an '#if ..
' section and starts a new section that will compile only if the '#if ..
' section was false#elif
,#elseif
or#elsif
– combines '#else
' with a new '#if ..
' section
#define
– sets a Conditional Define#undef
– un-sets a Conditional Define#if
or#ifdef
– checks for a single define or a boolean expression combining multiple defines with&&
,||
and!
. See Conditional Compilation for details. Also supports the specialos()
andarch()
macro defines.#endif
– closes off an '#if ..
' section#else
– closes off an '#if ..
' section and starts a new section that will compile only if the '#if ..
' section was *#elseif
– combines '#else
' with a new '#if ..}
' section#elseif
— combines '#else
' with a new '#if ..
' section
#define
– sets a Conditional Define#undef
– un-sets a Conditional Define#if
or#ifdef
– checks for a single define or a boolean expression combining multiple defines with&&
,||
and!
. See Conditional Compilation for details.#endif
– closes off an '#if ..
' section#else
– closes off an '#if ..
' section and starts a new section that will compile only if the '#if ..
' section was *#elseif
– combines '#else
' with a new '#if ..}
' section#elseif
— combines '#else
' with a new '#if ..
' section
Messages
The directives below allow you to control or emit custom error and warning messages:
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{$HINT msg}
– emits a custom hint message{$WARNING msg}
– emits a custom warning message{$ERROR msg}
– emits a custom error message and fails the build{$MESSAGE msg}
– emits a custom message{$HIDE N123}
– disables the given warning or hint message for subsequent code{$SHOW N123}
– re-enables the given warning or hint message for subsequent code{$HIDEMESSAGE N123}
– same as above{$SHOWMESSAGE N123}
– same as above
#hint msg
– emits a custom hint message#warning msg
– emits a custom warning message#error msg
– emits a custom error message and fails the build#message msg
– emits a custom message#pragma disable N123
disables the given warning or hint message for subsequent code#pragma enable N123
re-enables the given warning or hint message for subsequent code
#hint msg
– emits a custom hint message#warning msg
– emits a custom warning message#error msg
– emits a custom error message and fails the build#message msg
– emits a custom message#pragma disable N123
disables the given warning or hint message for subsequent code#pragma enable N123
re-enables the given warning or hint message for subsequent code
#hint msg
– emits a custom hint message#warning msg
– emits a custom warning message#error msg
– emits a custom error message and fails the build#message msg
– emits a custom message#pragma disable N123
disables the given warning or hint message for subsequent code#pragma enable N123
re-enables the given warning or hint message for subsequent code
ASP.NET support
The 'Line' directive can be used to influence the line number information the compiler emits for error and warning messages. You will generally not use this in your own code, but ASP.NET (and other code-generating frameworks) may use this to map errors originating from auto-generated code back to source files the developer is aware of.
{$LINE n}
– all subsequent messages will be reported relative to the line number provided{$LINE HIDDEN}
– all subsequent messages will be hidden{$LINE DEFAULT}
– all subsequent messages will be reported with their actual location again
#line n
– all subsequent messages will be reported relative to the line number provided#line hidden
– all subsequent messages will be hidden#line default
– all subsequent messages will be reported with their actual location again
#line n
– all subsequent messages will be reported relative to the line number provided#line hidden
– all subsequent messages will be hidden#line default
– all subsequent messages will be reported with their actual location again
#line n
– all subsequent messages will be reported relative to the line number provided#line hidden
– all subsequent messages will be hidden#line default
– all subsequent messages will be reported with their actual location again
Ignored Directives
The following directives are ignored by the compiler, either for compatibility reasons or (in case of the 'Region' directives) because they are interpreted by the IDE only.
{$R+/-}
or{$RANGE ON/OFF/DEFAULt}
– (controls range checking in Delphi){$REGION}
and{$ENDREGION}
– used by the IDE for code folding{$HPPEMIT}
{$EXTERNALSYM}
{$G+/-}
or{$GLOBALS ON/OFF/DEFAULT}
– turn on support for Globals (now always on)
#region
and#endregion
– used by the IDE for code folding#hppemit
#externalsym
#region
and#endregion
– used by the IDE for code folding#hppemit
#externalsym
#region
and#endregion
– used by the IDE for code folding#hppemit
#externalsym
Cross-Platform Compatibility Mode
Cross-Platform warnings, hints and compiler behavior can be toggled via the {$CROSSPLATFORM}
(Oxygene) and #pragma crossplatform
(C# and Swift) directive. Uplay key generator download. C# and Swift will ignore any other/unknown #pragma
directives.
{$CROSSPLATFORM ON}
– turn on Cross-Platform Compatibility for subsequent code{$CROSSPLATFORM OFF}
– turn off Cross-Platform Compatibility for subsequent code{$CROSSPLATFORM DEFAULT}
– use the project default for Cross-Platform Compatibility for subsequent code
#pragma crossplatform on
– turn on Cross-Platform Compatibility for subsequent code#pragma crossplatform off
– turn off Cross-Platform Compatibility for subsequent code#pragma crossplatform default
– use the project default for Cross-Platform Compatibility for subsequent code
#pragma crossplatform on
– turn on Cross-Platform Compatibility for subsequent code#pragma crossplatform off
– turn off Cross-Platform Compatibility for subsequent code#pragma crossplatform default
– use the project default for Cross-Platform Compatibility for subsequent code
#pragma crossplatform on
– turn on Cross-Platform Compatibility for subsequent code#pragma crossplatform off
– turn off Cross-Platform Compatibility for subsequent code#pragma crossplatform default
– use the project default for Cross-Platform Compatibility for subsequent code
Additional Directives (Oxygene Only)
These directives are supported for Oxygene only:
{$Q+/-}
or{$OVERFLOW ON/OFF/DEFAULT}
– turn overflow checking on or off{$R+/-}
or{$RANGE ON/OFF/DEFAULT}
– turn range checking on or off{$TAILCALLS ON/OFF/DEFAULT}
– enables or disables compiler optimizations for Tail Calls{$INCLUDE file.inc}
or{$I file.inc}
– includes code from the specified.inc
file in the current location. Deprecated, provided for compatibility only.{$PARAMETER X}
– allows parameters passed to the command line compiler to be used as a string literal. Deprecated.{$DELPHI ON/OFF/DEFAULT}
– enables or disables Delphi Compatibility Mode{$DELPHICOMPATIBILITY ON/OFF/DEFAULT}
– same as above{$CCOMPATIBILITY ON/OFF/DEFAULT}
– unsupported and ignored
Enhanced C-Language Compatibility
These directives for toggling Enhanced C-Language Compatibility are supported for C#, Swift and Java only: Bahut pyar karte hain lyrics.
#pragma ccompatibility on
– turn on C-Language Compatibility for subsequent code#pragma ccompatibility off
– turn off C-Language Compatibility for subsequent code#pragma ccompatibility default
– use the project default for C-Language Compatibility for subsequent code
See Also
Error
,Warning
,Hint
andMessage
AspectscompilerError()
,compilerWarning()
& Co System Functionsdefined()
System Functionexists()
System Functions
Delphi 7: Is it possible to put a compiler conditionals in the IDE (like Tools, Environment options) rather than in a project under Project, Options, Conditionals?
We have a compiler directive that needs to be defined when compiling on developers' machines, but undefined when we build releases.
We don't want to use IFDEF DEBUG, since occasionally we ship code with debugging on.
We don't want to use an include file, because we'd risk it getting swept up into our source code control system.
Ideally, we would be able to create a compiler directive like we can an IDE environment variable where it wouldn't be saved in our source tree.
Any suggestions??
4 Answers
The solution is to use a build tool like FinalBuilder to do your building. This way you can be completely sure that you ship a good build every time, and not forget to set some option back to what it should be. I used to take a real day doing builds, now it is a click and I'm done.
Automating it will be hard (although your restriction on include files sounds a bit artifical, simply put the thing in source control and replace the version on disk with a different one during build script), why not force your individual developers to turn it on manually?
- Introduce an extra DEFINE in the build script (e.g. FINAL_BUILD)
- Introduce a compile time error in the source code forcing your developers to turn it on.
Finally, introduce a similar compile time error to make sure the FINAL_BUILD and special directive are never turned on at the same time.
You can use Conditional defines in project options
this will pass your custom defines to compiler when begin compile of project
follow this in Delphi IDEProject > Options > Delphi Compiler > Conditional defines
Of course, adding {$DEFINE MYCONDITION}
in your code would add a custom directive which you could check with {$IFDEF MYCONDITION}
but this you should already know. However, if you compile your project from the commandlineDCC32 -D MYCONDITION ..
then you can compile it with (or without) that option.