configure: Disable default CFLAGS from AC_PROG_CC #651
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AC_PROG_CC adds some default compiler flags unless you tell it not to:
(Source.)
Also tweak DEBUG_ENABLED handling in Makefile.am: we always pass
-g3
in the basic CFLAGS set from configure.ac, so no point adding it again there. Instead, pass-O0
, which should be the default but here serves as a kind of documentation.Credit to @letFunny for noticing that
-O2
was getting passed to gcc even for builds configured with--enable-debug
.Signed-off-by: Cole Miller cole.miller@canonical.com