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[docs] Document LLVM_ENABLE_IDE

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Use some of the wording and the motivating example from r344555. The
lack of documentation was pointed out by Roman Lebedev.

Differential Revision: https://reviews.llvm.org/D58286

llvm-svn: 354167
This commit is contained in:
Shoaib Meenai 2019-02-15 20:40:26 +00:00
parent 6433a60405
commit a6a61902e0
1 changed files with 9 additions and 0 deletions
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docs/CMake.rst
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@ -281,6 +281,15 @@ LLVM-specific variables
**LLVM_ENABLE_EXPENSIVE_CHECKS**:BOOL
Enable additional time/memory expensive checking. Defaults to OFF.
**LLVM_ENABLE_IDE**:BOOL
Tell the build system that an IDE is being used. This in turn disables the
creation of certain convenience build system targets, such as the various
``install-*`` and ``check-*`` targets, since IDEs don't always deal well with
a large number of targets. This is usually autodetected, but it can be
configured manually to explicitly control the generation of those targets. One
scenario where a manual override may be desirable is when using Visual Studio
2017's CMake integration, which would not be detected as an IDE otherwise.
**LLVM_ENABLE_PIC**:BOOL
Add the ``-fPIC`` flag to the compiler command-line, if the compiler supports
this flag. Some systems, like Windows, do not need this flag. Defaults to ON.