fix: Reduce verbosity if version file is missing

As we don't check for the existance of the version file this would
otherwise emit a useless error to the commandline:

    > ==> Building protobuf for [extra-staging] (x86_64)
    > cat: /var/lib/archbuild/extra-staging-x86_64/root/.arch-chroot: No such file or directory
    > ==> Creating chroot for [extra-staging] (x86_64)...

Fix this by just silencing the error, as the check later also covers the
case for empty `CURRENT_CHROOT_VERSION`.

Fixes #272

Component: archbuild
Signed-off-by: Christian Heusel <christian@heusel.eu>

Makefile

@@ -1,6 +1,6 @@
 SHELL=/bin/bash -o pipefail
 
-V=1.3.2
+V=1.4.0
 BUILDTOOLVER ?= $(V)
 
 PREFIX = /usr/local

config/makepkg/conf.d/fortran.conf

@@ -1,4 +1,6 @@
 #!/hint/bash
+# shellcheck disable=2034
+
 #
 # /etc/makepkg.conf.d/fortran.conf
 #
@@ -9,10 +11,12 @@
 
 # Flags used for the Fortran compiler, similar in spirit to CFLAGS. Read
 # linkman:gfortran[1] for more details on the available flags.
-#FFLAGS="-O2 -pipe"
-#FCFLAGS="$FFLAGS"
+FFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fno-plt \
+        -Wp,-D_FORTIFY_SOURCE=3 -fstack-clash-protection -fcf-protection \
+        -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer"
+FCFLAGS="$FFLAGS"
 
 # Additional compiler flags appended to `FFLAGS` and `FCFLAGS` for use in debugging. Usually
 # this would include: ``-g''. Read linkman:gfortran[1] for more details on the wide
 # variety of compiler flags available.
-#DEBUG_FFLAGS="-g"
+DEBUG_FFLAGS="-g"

src/archbuild.in

@@ -80,7 +80,7 @@ check_root SOURCE_DATE_EPOCH,SRCDEST,SRCPKGDEST,PKGDEST,LOGDEST,MAKEFLAGS,PACKAG
 makechrootpkg_args+=("${@:$OPTIND}")
 
 # Automatically recreate the root chroot if a version mismatch is detected
-CURRENT_CHROOT_VERSION=$(cat "${chroots}/${repo}-${arch}/root/.arch-chroot")
+CURRENT_CHROOT_VERSION=$(cat "${chroots}/${repo}-${arch}/root/.arch-chroot" 2>/dev/null)
 if [[ -f "${chroots}/${repo}-${arch}/root/.arch-chroot" ]] && [[ "$CURRENT_CHROOT_VERSION" != "$CHROOT_VERSION" ]]; then
 	warning "Recreating chroot '%s' (%s) as it is not at version %s" "${chroots}/${repo}-${arch}/root" "$CURRENT_CHROOT_VERSION" "$CHROOT_VERSION"
 	clean_first=true