dev-libs/octetos-core: simplify ebuilds

you can set the S variable to the location of the source files
instead of symlinking the source files to the default value of S

Also, there is no need to specify the default functions, they
are implemented automatically if nothing is specified

Using MYPV is very helpful as you now only have to change 1 line
to version bump

Package-Manager: Portage-2.3.99, Repoman-2.3.22
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@riseup.net>

dev-libs/octetos-core/octetos-core-2.0.0_beta.ebuild

@@ -5,9 +5,11 @@ EAPI=7
 
 inherit autotools
 
+MYPV="${PV/_beta/-alpha.2}"
+
 DESCRIPTION="C/C++ library to mainly provide Semantic Versioned implementation"
 HOMEPAGE="https://github.com/azaeldevel/octetos-core"
-SRC_URI="https://github.com/azaeldevel/octetos-core/archive/2.0.0-alpha.2.tar.gz"
+SRC_URI="https://github.com/azaeldevel/${PN}/archive/${MYPV}.tar.gz"
 
 LICENSE="GPL-3"
 SLOT="0"
@@ -24,23 +26,9 @@ BDEPEND="
 	dev-libs/libconfig
 "
 
-src_unpack() {
-	default
-	ln -s octetos-core-2.0.0-alpha.2 "${P}"
-}
+S="${WORKDIR}/${PN}-${MYPV}"
 
 src_prepare() {
+	default
 	eautoreconf -fi
-	eapply_user
-}
-
-src_configure() {
-	if [[ -x ${ECONF_SOURCE:-.}/configure ]] ; then
-		econf
-	fi
-}
-src_compile() {
-	if [ -f Makefile ] || [ -f GNUmakefile ] || [ -f makefile ]; then
-		emake || die "emake failed"
-	fi
 }