cmake flag USE_HARDENING is effectively ignored

[mjstahlberg]

I believe

	if (USE_HARDENING OR NOT MINGW)
		# MinGW with _FORTIFY_SOURCE and without -fstack-protector
		# causes unsatisfied dependency on libssp.
		# https://github.com/msys2/MINGW-packages/issues/5868
		set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELEASE)
		set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELWITHDEBINFO)
		set_c_cxx_flag("-D_FORTIFY_SOURCE=2" MINSIZEREL)
		# Don't set _FORTIFY_SOURCE in debug builds.
	endif()

should rather begin with if (USE_HARDENING AND NOT MINGW) in DaemonFlags.cmake.

[mjstahlberg]

One might want to let USE_HARDENING default to ON if the above is fixed.

[mjstahlberg]

I should add that I want the USE_HARDENING flag to be retained as having it enabled clashes with the system-wide setting in /etc/makepkg.conf on Arch (causing lots of compiler warnings). So there are good reasons the user might want it disabled.

[slipher]

Well, it wasn't written as a logic error. The diff adding it:

-    set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELEASE)
-    set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELWITHDEBINFO)
-    set_c_cxx_flag("-D_FORTIFY_SOURCE=2" MINSIZEREL)
+    if (USE_HARDENING OR NOT MINGW)
+        # MinGW with _FORTIFY_SOURCE and without -fstack-protector causes unsatisfied dependency on libssp
+        # https://github.com/msys2/MINGW-packages/issues/5868
+        set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELEASE)
+        set_c_cxx_flag("-D_FORTIFY_SOURCE=2" RELWITHDEBINFO)
+        set_c_cxx_flag("-D_FORTIFY_SOURCE=2" MINSIZEREL)
+    endif()

It's like, by default we use a medium amount of hardening but if you set USE_HARDENING we use maximum hardening. But on MinGW medium hardening doesn't work and has to be disabled.

[DolceTriade]

The logic is still wrong. The correct logic would be to remove USE_HARDENING, unless the idea is to allow MINGW to force enable hardening?

[slipher]

There are other flags enabled only with USE_HARDENING.

[DolceTriade]

Sure, not saying remove the flag USE_HARDENING, just remove it from this condition.