chore(license): avoid sourcing PKGBUILD in check subcommand

We don't actually need any data from the package, except the pkgbase
which is exclusively used during logging. Simply grep the pkgbase name
and use the path during early code path issues.

Component: pkgctl license check

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/lib/license/check.sh

@@ -94,19 +94,19 @@ pkgctl_license_check() {
 		pushd "${path}" >/dev/null
 
 		if [[ ! -f PKGBUILD ]]; then
-			msg_error "${BOLD}${pkgbase}:${ALL_OFF} no PKGBUILD found"
+			msg_error "${BOLD}${path}:${ALL_OFF} no PKGBUILD found"
 			return 1
 		fi
 
-		# reset common PKGBUILD variables
-		unset pkgbase
-
-		# shellcheck source=contrib/makepkg/PKGBUILD.proto
-		if ! . ./PKGBUILD; then
-			msg_error "${BOLD}${pkgbase}:${ALL_OFF} failed to source PKGBUILD"
+		if [[ ! -f .SRCINFO ]]; then
+			msg_error "${BOLD}${path}:${ALL_OFF} no .SRCINFO found"
+			return 1
+		fi
+
+		if ! pkgbase=$(grep --max-count=1 --extended-regexp "pkgbase = (.+)" .SRCINFO | awk '{print $3}'); then
+			msg_error "${BOLD}${path}:${ALL_OFF} pkgbase not found in .SRCINFO"
 			return 1
 		fi
-		pkgbase=${pkgbase:-$pkgname}
 
 		if [[ ! -e LICENSE ]]; then
 			msg_error "${BOLD}${pkgbase}:${ALL_OFF} is missing the LICENSE file"