Discourage -fomit-frame-pointer

Author: vchuravy

src/Runner.jl

@@ -573,7 +573,7 @@ function generate_compiler_wrappers!(platform::AbstractPlatform; bin_path::Abstr
 
     function gcc_unsafe_flags!(p::AbstractPlatform, flags::Vector{String} = String[])
         if !allow_unsafe_flags
-            return String["-Ofast", "-ffast-math", "-funsafe-math-optimizations"]
+            return String["-Ofast", "-ffast-math", "-funsafe-math-optimizations", "-fomit-frame-pointer"]
         end
         return String[]
     end

test/runners.jl

@@ -418,7 +418,7 @@ end
             @test !run(ur, cmd, iobuff; tee_stream=devnull)
             seekstart(iobuff)
             lines = readlines(iobuff)
-            @test lines[2] == "BinaryBuilder: You used one or more of the unsafe flags: -Ofast, -ffast-math, -funsafe-math-optimizations"
+            @test lines[2] == "BinaryBuilder: You used one or more of the unsafe flags: -Ofast, -ffast-math, -funsafe-math-optimizations, -fomit-frame-pointer"
             @test lines[3] == "Please repent."
 
             ur = preferred_runner()(dir; platform=platform, allow_unsafe_flags=true)