[gentoo-commits] repo/gentoo:master commit in: app-crypt/libb2/

[Fabian Groffen]

commit:     fbe3b8ebb4bd549548943edd4d1b83f2d759228d
Author:     Fabian Groffen <grobian <AT> gentoo <DOT> org>
AuthorDate: Mon Nov 27 13:54:44 2017 +0000
Commit:     Fabian Groffen <grobian <AT> gentoo <DOT> org>
CommitDate: Mon Nov 27 13:54:58 2017 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fbe3b8eb

app-crypt/libb2: addUSE=native-cflags to control feature guessing

Package-Manager: Portage-2.3.13, Repoman-2.3.3

 app-crypt/libb2/libb2-0.98.ebuild | 10 ++++++----
 app-crypt/libb2/metadata.xml      |  8 ++++++++
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/app-crypt/libb2/libb2-0.98.ebuild b/app-crypt/libb2/libb2-0.98.ebuild
index 08bf237662f..b42921bc69d 100644
--- a/app-crypt/libb2/libb2-0.98.ebuild
+++ b/app-crypt/libb2/libb2-0.98.ebuild
@@ -13,7 +13,7 @@ SRC_URI="https://github.com/BLAKE2/libb2/archive/${GITHASH}.tar.gz -> ${P}.tar.g
 LICENSE="CC0-1.0"
 SLOT="0"
 KEYWORDS="~amd64 ~ppc64"
-IUSE="static"
+IUSE="static native-cflags"
 
 DEPEND=""
 RDEPEND="${DEPEND}"
@@ -28,12 +28,14 @@ src_prepare() {
 }
 
 src_configure() {
-	econf $(use_enable static)
+	econf \
+		$(use_enable static) \
+		$(use_enable native-cflags native)
 }
 
 src_compile() {
-	# respect our CFLAGS
-	emake CFLAGS="${CFLAGS}"
+	# respect our CFLAGS when native-cflags is not in effect
+	emake $(use native-cflags && echo no)CFLAGS="${CFLAGS}"
 }
 
 src_install() {

diff --git a/app-crypt/libb2/metadata.xml b/app-crypt/libb2/metadata.xml
index 5ef83e989e9..76fd7590acb 100644
--- a/app-crypt/libb2/metadata.xml
+++ b/app-crypt/libb2/metadata.xml
@@ -10,4 +10,12 @@
 
 		Official implementations from BLAKE2 project.
 	</longdescription>
+	<use>
+		<flag name="native-cflags">
+		Use CFLAGS as determined by configure script.  These flags will
+		enable all CPU specific features it find available, to further
+		optimise the implementation.  This discards any existing CFLAGS
+		set in make.conf or similar.
+		</flag>
+	</use>
 </pkgmetadata>