dev-libs/libpcre: Fix compile error on MIPS. Fixes #626564

Fixes a compile error on certain MIPS platforms that leads to a
violation of C grammar in sljit/sljitNativeMIPS_common.c.  Patch
has been upstreamed:
https://bugs.exim.org/show_bug.cgi?id=2154

Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Package-Manager: Portage-2.3.6, Repoman-2.3.3

dev-libs/libpcre/files/libpcre-8.41-sljit_mips-label-statement-fix.patch

@@ -0,0 +1,15 @@
+diff -Naurp pcre-8.41.orig/sljit/sljitNativeMIPS_common.c pcre-8.41/sljit/sljitNativeMIPS_common.c
+--- pcre-8.41.orig/sljit/sljitNativeMIPS_common.c	2017-05-07 11:32:25.000000000 -0400
++++ pcre-8.41/sljit/sljitNativeMIPS_common.c	2017-07-29 17:50:24.508909742 -0400
+@@ -503,9 +503,11 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit
+ #ifdef SLJIT_IS_FPU_AVAILABLE
+ 		return SLJIT_IS_FPU_AVAILABLE;
+ #elif defined(__GNUC__)
++	{
+ 		sljit_sw fir;
+ 		asm ("cfc1 %0, $0" : "=r"(fir));
+ 		return (fir >> 22) & 0x1;
++	}
+ #else
+ #error "FIR check is not implemented for this architecture"
+ #endif

dev-libs/libpcre/libpcre-8.41.ebuild

@@ -47,11 +47,12 @@ MULTILIB_CHOST_TOOLS=(
 	/usr/bin/pcre-config
 )
 
-#PATCHES=(
-#)
+PATCHES=(
+	"${FILESDIR}"/${PN}-8.41-sljit_mips-label-statement-fix.patch
+)
 
 src_prepare() {
-	#epatch "${PATCHES[@]}"
+	epatch "${PATCHES[@]}"
 	sed -i -e "s:-lpcre ::" libpcrecpp.pc.in || die
 	elibtoolize
 }