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mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-08-04 13:13:25 +03:00

0028417: Using PRECOMPILED HEADER to speed up compilation time

Use of Cotire tool is introduced for acceleration of CMake builds, by usage of precompiled headers.
CMake option BUILD_USE_PCH is added to enable / disable use of precompiled headers

When precompiled headers are used, additional compiler macros are defined globally in the build system to avoid problems due to different order of included files:
- NOMINMAX is defined on Windows to prevent defining "min" and "max" as macros by windows.h
- STRSAFE_NO_DEPRECATE and _SCL_SECURE_NO_WARNINGS are defined on Windows to prevent declaring functions of standard C library as deprecated by #pragma, and other warnings in system headers
- GL_GLEXT_LEGACY and GLX_GLEXT_LEGACY are defined to ensure that only OCCT's own glext.h is used
- __STDC_FORMAT_MACROS is defined to have standard C print format macros always defined

Code is corrected to avoid conflicts with system headers and in case of compiling together as unity builds (partially):
- Some locally defined variables in TKV3d, TKHLR are renamed to be unique
- Duplicated definitions of macros and global functions are eliminated in TKSTEP
- Useless header WNT_UInt.hxx is removed
- Usage of local variables conflicting with X11 macro is avoided in Draw_Viewer.cxx
- Local variables in AIS_ConcentricRelation.cxx are renamed to avoid conflict with macros defined in windows.h
- HXX files containing code are renamed to PXX or merged with corresponding CXX files.

IVtkTools classes are corrected to avoid compiler warnings disabled in non-PCH builds by inclusion of VTK headers.

Useless pragmas disabling warnings on MSVC are removed
This commit is contained in:
abv
2017-06-29 20:17:39 +03:00
committed by bugmaster
parent a07cff6957
commit 896faa7296
91 changed files with 5213 additions and 1746 deletions

View File

@@ -15,8 +15,8 @@
#include <Message_ProgressScale.hxx>
#include <TCollection_HAsciiString.hxx>
static const Standard_Real ZERO = 1e-10;
static const Standard_Real INFINITE = 1e100;
static const Standard_Real Message_ProgressScale_ZERO = 1e-10;
static const Standard_Real Message_ProgressScale_INFINITE = 1e100;
//=======================================================================
//function : Message_ProgressScale
@@ -37,7 +37,7 @@ Message_ProgressScale::Message_ProgressScale () :
Standard_Real Message_ProgressScale::LocalToBase (const Standard_Real val) const
{
if ( val <= myMin ) return myFirst;
if ( myMax - myMin <= ZERO ) return myLast;
if ( myMax - myMin <= Message_ProgressScale_ZERO ) return myLast;
if ( ! myInfinite ) {
if ( val >= myMax ) return myLast;
@@ -55,8 +55,8 @@ Standard_Real Message_ProgressScale::LocalToBase (const Standard_Real val) const
Standard_Real Message_ProgressScale::BaseToLocal (const Standard_Real val) const
{
if ( myLast - val <= ZERO )
return myInfinite ? INFINITE : myMax;
if ( myLast - val <= Message_ProgressScale_ZERO )
return myInfinite ? Message_ProgressScale_INFINITE : myMax;
if ( ! myInfinite )
return myMin + ( myMax - myMin ) * ( val - myFirst ) / ( myLast - myFirst );
// Standard_Real x = log ( ( val - myFirst ) / ( myLast - val ) ); // exponent