diff options
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index b9c51917..af68accb 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -10,6 +10,7 @@ INCLUDE(CheckFunctionExists) INCLUDE(CheckLibraryExists) INCLUDE(CheckIncludeFile) INCLUDE(CheckIncludeFiles) +INCLUDE(CheckSymbolExists) INCLUDE(CheckCCompilerFlag) INCLUDE(CheckCSourceCompiles) INCLUDE(CheckTypeSize) @@ -167,6 +168,17 @@ IF(NOT HAVE_SNPRINTF) ADD_DEFINITIONS(-Dsnprintf=_snprintf) ENDIF() +CHECK_SYMBOL_EXISTS(isnan math.h HAVE_ISNAN) +IF(NOT HAVE_ISNAN) + CHECK_FUNCTION_EXISTS(_isnan HAVE__ISNAN) + IF(NOT HAVE__ISNAN) + MESSAGE(FATAL_ERROR "No isnan function found, please report!") + ENDIF() + + ADD_DEFINITIONS(-Disnan=_isnan) +ENDIF() + + # Check for the dlopen API (for dynamicly loading backend libs) IF(DLOPEN) CHECK_INCLUDE_FILE(dlfcn.h HAVE_DLFCN_H) |