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| author | Gerald Combs <gerald@wireshark.org> | 2017-09-20 16:19:04 -0700 |
|---|---|---|
| committer | Anders Broman <a.broman58@gmail.com> | 2017-09-22 04:50:31 +0000 |
| commit | ed1ecfb39cf0f3344810fabb7a1b855d373aa0a8 (patch) | |
| tree | 3cf13802e8d299538a6fd6354d742ea664c3e985 /CMakeLists.txt | |
| parent | 5f667694d3bbd57f13c26d3588d5671dfd30d09a (diff) | |
CMake: Print a warning if CCACHE_CPP2 is unset.
If we're compiling with clang and ccache, print a warning if CCACHE_CPP2
is unset. Doing so avoids generating a bunch of unwanted output when
warnings are enabled.
Change-Id: I6a796e8b910074ffa028ea45bc639b9461e1629e
Reviewed-on: https://code.wireshark.org/review/23646
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index d06049c5a2..5596cafa3a 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1291,6 +1291,10 @@ if(ENABLE_CCACHE AND (CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Cl if(CCACHE_EXECUTABLE) set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_EXECUTABLE}") set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CCACHE_EXECUTABLE}") + # http://peter.eisentraut.org/blog/2014/12/01/ccache-and-clang-part-3/ + if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT DEFINED(ENV{CCACHE_CPP2})) + message(WARNING "You're compiling using clang and ccache but CCACHE_CPP2 unset. This might produce unwanted warnings.") + endif() endif() endif() |