Reduce number of debug flags for GNU compile.

Used NCEPLIBS-IP as guidance.

Fixes ufs-community#735.

CMakeLists.txt

@@ -77,9 +77,7 @@ elseif(CMAKE_Fortran_COMPILER_ID MATCHES "^(GNU)$")
     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fallow-argument-mismatch -fallow-invalid-boz")
   endif()
   set(CMAKE_Fortran_FLAGS_RELEASE "-O3")
-#  set(CMAKE_Fortran_FLAGS_DEBUG "-ggdb -Wall")
-  set(CMAKE_Fortran_FLAGS_DEBUG "-O1 -ggdb -Wall -fno-unsafe-math-optimizations -frounding-math -fsignaling-nans -ffpe-trap=invalid,zero,overflow -fbounds-check -fno-omit-frame-pointer -fno-optimize-sibling-calls")
-#  set(CMAKE_Fortran_FLAGS_DEBUG "-ggdb -Wall -fno-unsafe-math-optimizations -frounding-math -fsignaling-nans -ffpe-trap=invalid,zero,overflow -fbounds-check -fno-omit-frame-pointer -fno-optimize-sibling-calls")
+  set(CMAKE_Fortran_FLAGS_DEBUG "-O0 -ggdb -Wall -fcheck=all")
 endif()
 
 if(CMAKE_C_COMPILER_ID MATCHES "^(Intel)$")