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| author | Brad King <brad.king@kitware.com> | 2014-08-18 10:49:30 -0400 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2014-08-18 10:59:08 -0400 |
| commit | 4ffec8f666b996aedd592e6d26286cef2cb38b50 (patch) | |
| tree | 39cde7e337e9956991360785054bb78dfa1c64cb /Modules/CheckSymbolExists.cmake | |
| parent | 4f2fcce4b9f897dfa98cb82f3876cd43ab80f69b (diff) | |
| download | cmake-4ffec8f666b996aedd592e6d26286cef2cb38b50.tar.gz | |
Check*: Add compatibility hack for old VXL code
The cleanup in commit 4f2fcce4 (Check*: Allow result variables to
contain regex special characters, 2014-07-31) broke old VXL code that
abuses the old "if(MATCHES)" implementation by using
SET( ${VARIABLE} ${VARIABLE} )
to reset a check result variable. Add a compatibility hack to the
CheckFunctionExists, CheckIncludeFileCXX, and CheckSymbolExists modules
to re-run their checks when the result variable is set to its own name.
Use STREQUAL instead of MATCHES so that special characters still work.
Diffstat (limited to 'Modules/CheckSymbolExists.cmake')
| -rw-r--r-- | Modules/CheckSymbolExists.cmake | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake index 6f50c88f45..c31f6b6e37 100644 --- a/Modules/CheckSymbolExists.cmake +++ b/Modules/CheckSymbolExists.cmake @@ -50,7 +50,7 @@ macro(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE) endmacro() macro(_CHECK_SYMBOL_EXISTS SOURCEFILE SYMBOL FILES VARIABLE) - if(NOT DEFINED "${VARIABLE}") + if(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}") set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n") set(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS}) if(CMAKE_REQUIRED_LIBRARIES) |