[openwrt/openwrt] perf: restrict libunwind dependency to archs that actually support libunwind

[LEDE Commits]

neoraider pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/9bf440fcd9481ee8d20c4b9bccbe6d5cac6bd6e9

commit 9bf440fcd9481ee8d20c4b9bccbe6d5cac6bd6e9
Author: Matthias Schiffer <mschiffer at universe-factory.net>
AuthorDate: Fri Feb 23 16:17:57 2018 +0100

    perf: restrict libunwind dependency to archs that actually support libunwind
    
    Allow building perf on uncommon targets again.
    
    Depending on the kernel version, not all of these archs will actually use
    libunwind in perf. Still, it seems simpler and less error-prone to use the
    same list that is defined in the libunwind package.
    
    Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
---
 package/devel/perf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/devel/perf/Makefile b/package/devel/perf/Makefile
index f5c8c70..6138858 100644
--- a/package/devel/perf/Makefile
+++ b/package/devel/perf/Makefile
@@ -26,7 +26,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/perf
   SECTION:=devel
   CATEGORY:=Development
-  DEPENDS:= +libelf1 +libdw +libunwind +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!TARGET_arc770 @KERNEL_PERF_EVENTS
+  DEPENDS:= +libelf1 +libdw +(mips||mipsel||powerpc||i386||x86_64||arm||aarch64):libunwind +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!TARGET_arc770 @KERNEL_PERF_EVENTS
   TITLE:=Linux performance monitoring tool
   VERSION:=$(LINUX_VERSION)-$(PKG_RELEASE)
   URL:=http://www.kernel.org