cmake: fix detection of powf() with GCC

2015-04-03 23:58:58 +02:00 · 2015-04-03 23:58:58 +02:00 · 0756ef6434
commit 0756ef6434
parent a91d517c98
1 changed files with 6 additions and 0 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -59,7 +59,13 @@ check_include_files(stdint.h GMIO_HAVE_STDINT_H)
 if(NOT BUILD_STRICT_C90)
    # Check C99 features
    check_function_exists(strtof GMIO_HAVE_STRTOF_FUNC)
+
+    if(CMAKE_COMPILER_IS_GNUCC)
+        list(APPEND CMAKE_REQUIRED_LIBRARIES m) # -lm
+    endif()
    check_function_exists(powf GMIO_HAVE_POWF_FUNC)
+    set(CMAKE_REQUIRED_LIBRARIES)
+
    check_include_files(stdbool.h GMIO_HAVE_STDBOOL_H)

    # Check POSIX features