On Tue, 22 Mar 2022 18:15:04 +0100 Thomas Huth <thuth@xxxxxxxxxx> wrote: > Newer compiler versions sometimes introduce new warnings - and compiling > with -Werror will fail there, of course. Thus users of the kvm-unit-tests > like the buildroot project have to disable the "-Werror" in the Makefile > with an additional patch, which is cumbersome. > Thus let's add a switch to the configure script that allows to explicitly > turn the -Werror switch on or off. And enable it only by default for > developer builds (i.e. in checked-out git repositories) ... and for > tarball releases, it's nicer if it is disabled by default, so that the > end users do not have to worry about this. > > Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx> makes sense Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> > --- > See also the patch from the buildroot project: > https://git.busybox.net/buildroot/tree/package/kvm-unit-tests/0001-Makefile-remove-Werror-to-avoid-build-failures.patch > > Makefile | 2 +- > configure | 16 ++++++++++++++++ > 2 files changed, 17 insertions(+), 1 deletion(-) > > diff --git a/Makefile b/Makefile > index 24686dd..6ed5dea 100644 > --- a/Makefile > +++ b/Makefile > @@ -62,7 +62,7 @@ include $(SRCDIR)/$(TEST_DIR)/Makefile > > COMMON_CFLAGS += -g $(autodepend-flags) -fno-strict-aliasing -fno-common > COMMON_CFLAGS += -Wall -Wwrite-strings -Wempty-body -Wuninitialized > -COMMON_CFLAGS += -Wignored-qualifiers -Werror -Wno-missing-braces > +COMMON_CFLAGS += -Wignored-qualifiers -Wno-missing-braces $(CONFIG_WERROR) > > frame-pointer-flag=-f$(if $(KEEP_FRAME_POINTER),no-,)omit-frame-pointer > fomit_frame_pointer := $(call cc-option, $(frame-pointer-flag), "") > diff --git a/configure b/configure > index c4fb4a2..86c3095 100755 > --- a/configure > +++ b/configure > @@ -31,6 +31,13 @@ page_size= > earlycon= > efi= > > +# Enable -Werror by default for git repositories only (i.e. developer builds) > +if [ -e "$srcdir"/.git ]; then > + werror=-Werror > +else > + werror= > +fi > + > usage() { > cat <<-EOF > Usage: $0 [options] > @@ -75,6 +82,8 @@ usage() { > Specify a PL011 compatible UART at address ADDR. Supported > register stride is 32 bit only. > --[enable|disable]-efi Boot and run from UEFI (disabled by default, x86_64 only) > + --[enable|disable]-werror > + Select whether to compile with the -Werror compiler flag > EOF > exit 1 > } > @@ -148,6 +157,12 @@ while [[ "$1" = -* ]]; do > --disable-efi) > efi=n > ;; > + --enable-werror) > + werror=-Werror > + ;; > + --disable-werror) > + werror= > + ;; > --help) > usage > ;; > @@ -371,6 +386,7 @@ WA_DIVIDE=$wa_divide > GENPROTIMG=${GENPROTIMG-genprotimg} > HOST_KEY_DOCUMENT=$host_key_document > CONFIG_EFI=$efi > +CONFIG_WERROR=$werror > GEN_SE_HEADER=$gen_se_header > EOF > if [ "$arch" = "arm" ] || [ "$arch" = "arm64" ]; then
