Merge pull request #486 from weslleyspereira/try-implicit-none

Summary of PR #486:
1. There was a bug in the Makefile, and this is why AppVeyor stopped working. I solved it.
2. A recent commit was caused by a variable that was not defined, and the compiler couldn't track it. @thijssteel suggested adding `-fimplicit-none` to the CI on #484. I did it.

Author: weslleyspereira

.travis.yml

@@ -39,6 +39,7 @@ script:
     -DLAPACKE:BOOL=ON
     -DBUILD_TESTING=ON
     -DLAPACKE_WITH_TMG:BOOL=ON
+    -DCMAKE_Fortran_FLAGS:STRING="-fimplicit-none"
     ${SRC_DIR}
   - ctest -D ExperimentalStart
   - ctest -D ExperimentalConfigure

CMakeLists.txt

@@ -180,7 +180,7 @@ CheckLAPACKCompilerFlags()
 # Check second function
 
 include(CheckTimeFunction)
-set(TIME_FUNC NONE ${TIME_FUNC})
+set(NONE ${TIME_FUNC})
 CHECK_TIME_FUNCTION(NONE TIME_FUNC)
 CHECK_TIME_FUNCTION(INT_CPU_TIME TIME_FUNC)
 CHECK_TIME_FUNCTION(EXT_ETIME TIME_FUNC)