added whole system from ola4doc

sys/node_modules/node-sass/src/libsass/docs/build-on-gentoo.md

@@ -0,0 +1,55 @@
+Here are two ebuilds to compile LibSass and sassc on gentoo linux. If you do not know how to use these ebuilds, you should probably read the gentoo wiki page about [portage overlays](http://wiki.gentoo.org/wiki/Overlay).
+
+## www-misc/libsass/libsass-9999.ebuild
+```ebuild
+EAPI=4
+
+inherit eutils git-2 autotools
+
+DESCRIPTION="A C/C++ implementation of a Sass compiler."
+HOMEPAGE="http://libsass.org/"
+EGIT_PROJECT='libsass'
+EGIT_REPO_URI="https://github.com/sass/libsass.git"
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS=""
+IUSE=""
+DEPEND=""
+RDEPEND="${DEPEND}"
+DEPEND="${DEPEND}"
+
+pkg_pretend() {
+    # older gcc is not supported
+    local major=$(gcc-major-version)
+    local minor=$(gcc-minor-version)
+    [[ "${MERGE_TYPE}" != "binary" && ( $major > 4 || ( $major == 4 && $minor < 5 ) ) ]] && \
+        die "Sorry, but gcc earlier than 4.5 will not work for LibSass."
+}
+
+src_prepare() {
+   eautoreconf
+}
+```
+
+## www-misc/sassc/sassc-9999.ebuild
+```ebuild
+EAPI=4
+
+inherit eutils git-2 autotools
+
+DESCRIPTION="Command Line Tool for LibSass."
+HOMEPAGE="http://libsass.org/"
+EGIT_PROJECT='sassc'
+EGIT_REPO_URI="https://github.com/sass/sassc.git"
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS=""
+IUSE=""
+DEPEND="www-misc/libsass"
+RDEPEND="${DEPEND}"
+DEPEND="${DEPEND}"
+
+src_prepare() {
+   eautoreconf
+}
+```