diff options
Diffstat (limited to 'Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt')
| -rw-r--r-- | Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt index def1140..4bf6024 100644 --- a/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt +++ b/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt @@ -2,13 +2,21 @@ add_library(MathFunctions mysqrt.cxx) # state that anybody linking to us needs to include the current source dir # to find MathFunctions.h, while we don't. -# state that we depend on Tutorial_BINARY_DIR but consumers don't, as the -# TutorialConfig.h include is an implementation detail target_include_directories(MathFunctions INTERFACE ${CMAKE_CURRENT_SOURCE_DIR} - PRIVATE ${Tutorial_BINARY_DIR} ) +# does this system provide the log and exp functions? +include(CheckSymbolExists) +set(CMAKE_REQUIRED_LIBRARIES "m") +check_symbol_exists(log "math.h" HAVE_LOG) +check_symbol_exists(exp "math.h" HAVE_EXP) + +if(HAVE_LOG AND HAVE_EXP) + target_compile_definitions(MathFunctions + PRIVATE "HAVE_LOG" "HAVE_EXP") +endif() + # install rules install(TARGETS MathFunctions DESTINATION lib) install(FILES MathFunctions.h DESTINATION include) |