Merge pull request #3895 from martin-frbg/issue3892

Fix linking to libm  with CMAKE

Author: martin-frbg

CMakeLists.txt

@@ -238,7 +238,7 @@ endif()
 set_target_properties(${OpenBLAS_LIBS} PROPERTIES OUTPUT_NAME ${OpenBLAS_LIBNAME})
 
 # Android needs to explicitly link against libm
-if(ANDROID)
+if (${CMAKE_SYSTEM_NAME} MATCHES "AIX|Android|Linux|FreeBSD|OpenBSD|NetBSD|DragonFly|Darwin")
   if(BUILD_STATIC_LIBS)
     target_link_libraries(${OpenBLAS_LIBNAME}_static m)
   endif()

cmake/fc.cmake

@@ -46,7 +46,7 @@ if (${F_COMPILER} STREQUAL "GFORTRAN")
   set(FCOMMON_OPT "${FCOMMON_OPT} -fno-optimize-sibling-calls")
   #Don't include -lgfortran, when NO_LAPACK=1 or lsbcc
   if (NOT NO_LAPACK)
-    set(EXTRALIB "{EXTRALIB} -lgfortran")
+    set(EXTRALIB "${EXTRALIB} -lgfortran")
   endif ()
   if (NO_BINARY_MODE)
     if (MIPS64)