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| author | Cosmin Truta <ctruta@gmail.com> | 2018-11-17 21:31:55 -0500 |
|---|---|---|
| committer | Cosmin Truta <ctruta@gmail.com> | 2018-11-17 21:31:55 -0500 |
| commit | ee7967eea439145673fa89e2d7d56d4932c182cc (patch) | |
| tree | 05ceefb25617ed7333a37b119aa69966e106b673 | |
| parent | a54a0562c53daf2d627f1631be0dd6531cca1694 (diff) | |
CMakeLists: Fix detection of libm
Only use libm on Unix and Unix-like systems, except for Apple (where
it's unnecessary), and BeOS and Haiku (where it's unavailable).
Avoid searching for libm at explicit locations. They may be incorrect,
especially for cross-platform builds.
| -rw-r--r-- | CMakeLists.txt | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index a49127d06..58332a85a 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -59,16 +59,10 @@ if(NOT PNG_BUILD_ZLIB) include_directories(${ZLIB_INCLUDE_DIR}) endif() -if(NOT WIN32) - find_library(M_LIBRARY - NAMES m - PATHS /usr/lib /usr/local/lib) - if(NOT M_LIBRARY) - message(STATUS "math lib 'libm' not found; floating point support disabled") - set(M_LIBRARY "") - endif() +if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU) + find_library(M_LIBRARY m) else() - # not needed on windows + # libm is not needed and/or not available set(M_LIBRARY "") endif() |