media-libs/libraw: fix build failure against glibc-2.27, bug #647556

Closes: https://bugs.gentoo.org/647556
Package-Manager: Portage-2.3.24, Repoman-2.3.6

media-libs/libraw/files/libraw-0.18.4-glibc-2.27.patch

@@ -0,0 +1,14 @@
+Fix build failure on glibc-2.27 caused by pow64 symbol collision.
+
+https://github.com/LibRaw/LibRaw/pull/115
+https://bugs.gentoo.org/647556
+diff --git a/internal/dcraw_common.cpp b/internal/dcraw_common.cpp
+index 18bcdbc..8cec744 100644
+--- a/internal/dcraw_common.cpp
++++ b/internal/dcraw_common.cpp
+@@ -5770,4 +5770,5 @@ static float powf_lim(float a, float b, float limup)
+ return (b>limup || b < -limup)?0.f:powf(a,b);
+ }
++#define powf64 powf_lim64 /* workaround symbol collision */
+ static float powf64(float a, float b)
+ {

media-libs/libraw/libraw-0.18.4.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -32,6 +32,10 @@ S=${WORKDIR}/${MY_P}
 
 DOCS=( Changelog.txt README )
 
+PATCHES=(
+ "${FILESDIR}"/${PN}-0.18.4-glibc-2.27.patch
+)
+
 pkg_pretend() {
  [[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
 }

media-libs/libraw/libraw-0.18.6.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -32,6 +32,10 @@ S="${WORKDIR}/${MY_P}"
 
 DOCS=( Changelog.txt README )
 
+PATCHES=(
+ "${FILESDIR}"/${PN}-0.18.4-glibc-2.27.patch
+)
+
 pkg_pretend() {
  [[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
 }

media-libs/libraw/libraw-0.18.7.ebuild

@@ -32,6 +32,10 @@ S="${WORKDIR}/${MY_P}"
 
 DOCS=( Changelog.txt README )
 
+PATCHES=(
+ "${FILESDIR}"/${PN}-0.18.4-glibc-2.27.patch
+)
+
 pkg_pretend() {
  [[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
 }