--- /var/db/repos/gentoo/dev-libs/libbson/libbson-1.17.0.ebuild 2020-08-06 16:39:16.000000000 +0200
+++ dev-libs/libbson/libbson-1.17.0.ebuild      2020-08-23 11:23:29.000000000 +0200
@@ -3,7 +3,7 @@

 EAPI=7

-inherit cmake-utils
+inherit cmake

 DESCRIPTION="Library routines related to building,parsing and iterating BSON documents"
 HOMEPAGE="https://github.com/mongodb/mongo-c-driver/tree/master/src/libbson"
@@ -12,13 +12,17 @@
 LICENSE="Apache-2.0"
 SLOT="0"
 KEYWORDS="~amd64 ~hppa ~ppc ~sparc ~x86"
-IUSE="examples static-libs"
+IUSE="doc examples static-libs"

-DEPEND="dev-python/sphinx"
+BDEPEND="doc? ( dev-python/sphinx:= )"

+# patch out documentation
+# otherwise you get file collisions:
+# /usr/share/mongo-c-driver/*
+# from the mongo-c-driver package
+#
 PATCHES=(
        "${FILESDIR}/${PN}-1.14.0-no-docs.patch"
-       "${FILESDIR}/${PN}-1.16.2-sphinx.patch"
 )

 S="${WORKDIR}/mongo-c-driver-${PV}"
@@ -26,15 +30,17 @@
 src_configure() {
        local mycmakeargs=(
                -DENABLE_BSON=ON
-               -DENABLE_EXAMPLES=OFF
-               -DENABLE_MAN_PAGES=ON
+               -DENABLE_EXAMPLES="$(usex examples ON OFF)"
+               -DENABLE_HTML_DOCS="$(usex doc ON OFF)"
+               -DENABLE_MAN_PAGES="$(usex doc ON OFF)"
                -DENABLE_MONGOC=OFF
+               -DENABLE_PIC="$(usex pic ON OFF)"
                -DENABLE_TESTS=OFF
                -DENABLE_STATIC="$(usex static-libs ON OFF)"
                -DENABLE_UNINSTALL=OFF
        )

-       cmake-utils_src_configure
+       cmake_src_configure
 }

 src_install() {
@@ -43,5 +49,5 @@
                dodoc src/libbson/examples/*.c
        fi

-       cmake-utils_src_install
+       cmake_src_install
 }