Sebastien Loriot
ce19410302
## Summary of Changes
Remove the dead `elseif(MSVC14)` through `elseif(MSVC71)` fallback chain
in `Installation/cmake/modules/CGAL_GeneratorSpecificSettings.cmake`.
These fallbacks targeted Visual Studio 2003 (VC 7.1) through Visual
Studio 2015 (VC14). They are unreachable dead code because:
1. **CGAL requires CMake >= 3.15**, and `MSVC_TOOLSET_VERSION` has been
defined for all MSVC versions since CMake 3.12. The
`if(MSVC_TOOLSET_VERSION)` branch always fires for any MSVC build,
making the `elseif` chain unreachable.
2. **CGAL requires C++17**, which means Visual Studio 2017 (15.3) at
minimum. None of the removed fallback versions (VS 2003–2015) can
compile CGAL.
The `else()` branch (non-MSVC compilers) is preserved as `elseif(NOT
MSVC)` to maintain the status message for GCC/Clang/etc.
**Before:**
```cmake
if ( MSVC_TOOLSET_VERSION )
set(CGAL_TOOLSET "vc${MSVC_TOOLSET_VERSION}")
message( STATUS "Using VC toolset ${MSVC_TOOLSET_VERSION}." )
elseif ( MSVC14 )
... # 7 dead elseif branches (VC14, VC12, VC11, VC10, VC90, VC80, VC71)
else()
message( STATUS "Using ${CMAKE_CXX_COMPILER} compiler." )
endif()
```
**After:**
```cmake
if ( MSVC_TOOLSET_VERSION )
set(CGAL_TOOLSET "vc${MSVC_TOOLSET_VERSION}")
message( STATUS "Using VC toolset ${MSVC_TOOLSET_VERSION}." )
elseif ( NOT MSVC )
message( STATUS "Using ${CMAKE_CXX_COMPILER} compiler." )
endif()
```
## Release Management
* Affected package(s): `Installation`
* Issue(s) solved (if any): contributes to #6923, #4815
* Feature/Small Feature (if any): N/A
* License and copyright ownership: N/A
README
This distribution of CGAL includes:
| File or directory | Description |
|---|---|
AUTHORS |
current and former authors of CGAL |
CHANGES.md |
history of changes of CGAL |
CGALConfig.cmake |
CMake package configuration file for CGAL |
CGALConfigVersion.cmake |
CMake package version file for CGAL |
CMakeLists.txt |
main CMake project configuration file |
INSTALL.md |
information about the installation process |
LICENSE |
describes the license of CGAL |
LICENSE.BSL |
text of the Boost Software License (BSL) license |
LICENSE.COMMERCIAL |
text of the GeometryFactory Commercial license |
LICENSE.GPL |
text of the GNU General Public License (GPL) v3 license |
LICENSE.LGPL |
text of the GNU Lesser General Public License (LGPL) v3 license |
LICENSE.RFL |
text of the ETH Zurich Random Forest algorithm License (RFL) license |
README.md |
this file |
VERSION |
version number of this release of CGAL |
auxiliary/ |
directory containing miscellaneous things, such as icons needed for the demos on macOS |
cmake/ |
some scripts needed by the CMake build system |
data/ |
directory containing various geometric data used by examples and demos of CGAL |
demo/ |
many demo programs for the various packages of CGAL. These programs produce visual output. |
doc_html/ |
documentation, such as the CGAL Installation Guide |
examples/ |
programs illustrating the usage of various packages of CGAL. |
include/ |
the include files for the CGAL library (as well as small external libraries, see the file LICENSE) |
lib/ |
contains CMake package configuration files for CGAL |
scripts/ |
some useful scripts for CGAL programmers |