[Cmake-commits] CMake branch, next, updated. v3.0.1-5124-gedd3262

[Brad King]

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- Log -----------------------------------------------------------------
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=edd32628dec594b3d20b461f6a610597bc52aad2
commit edd32628dec594b3d20b461f6a610597bc52aad2
Merge: 43ad355 abbe91c
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Sep 3 11:21:01 2014 -0400
Commit:     CMake Topic Stage <kwrobot at kitware.com>
CommitDate: Wed Sep 3 11:21:01 2014 -0400

    Merge topic 'doc-try_compile-debug-advice' into next
    
    abbe91c5 Help: Clarify --debug-trycompile usage with try_compile


http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=abbe91c58ccf49dd60027ec5663154e54365f0fe
commit abbe91c58ccf49dd60027ec5663154e54365f0fe
Author:     Alan W. Irwin <airwin at users.sourceforge.net>
AuthorDate: Wed Sep 3 07:03:12 2014 -0700
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Wed Sep 3 11:19:52 2014 -0400

    Help: Clarify --debug-trycompile usage with try_compile
    
    Explain that try_compile calls need to be protected with conditions to
    avoid running more than once so that it is easy to isolate a single
    try_compile to perform with --debug-trycompile.

diff --git a/Help/command/try_compile.rst b/Help/command/try_compile.rst
index 8ed3cf4..224c67b 100644
--- a/Help/command/try_compile.rst
+++ b/Help/command/try_compile.rst
@@ -36,9 +36,10 @@ cleaned automatically.  For debugging, --debug-trycompile can be
 passed to cmake to avoid this clean.  However, multiple sequential
 try_compile operations reuse this single output directory.  If you use
 --debug-trycompile, you can only debug one try_compile call at a time.
-The recommended procedure is to configure with cmake all the way
-through once, then delete the cache entry associated with the
-try_compile call of interest, and then re-run cmake again with
+The recommended procedure is to protect all try_compile calls in your
+project by ``if(NOT DEFINED RESULT_VAR)`` logic, configure with cmake
+all the way through once, then delete the cache entry associated with
+the try_compile call of interest, and then re-run cmake again with
 --debug-trycompile.
 
 Some extra flags that can be included are, INCLUDE_DIRECTORIES,

-----------------------------------------------------------------------

Summary of changes:
 Help/command/try_compile.rst |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)


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