harvid: Fix building on NetBSD current. Do not echo escape sequences.

multimedia/harvid/distinfo

@@ -1,7 +1,8 @@
-$NetBSD: distinfo,v 1.2 2019/12/02 13:42:00 nia Exp $
+$NetBSD: distinfo,v 1.3 2021/08/24 11:25:42 nia Exp $
 
 SHA1 (harvid-0.8.3.tar.gz) = 4016446ba58609911b30ecc6cc4f345733cdc22d
 RMD160 (harvid-0.8.3.tar.gz) = ed77788cd4c219c16f94a10327085a9a3db7ceff
 SHA512 (harvid-0.8.3.tar.gz) = 748475602c7279f10790523cbd5cbf34c9cd283ca9e959ac0535fbb5b4ee6d2fcab976c5ddba3fa40862552b49d73df7145f36d26c9fe708063505812537a8ac
 Size (harvid-0.8.3.tar.gz) = 116446 bytes
 SHA1 (patch-libharvid_timecode.h) = dca6192ad3bb7ea2bad3ae69d82fd0e12ec1efd3
+SHA1 (patch-src_Makefile) = 84df56465b2f51ff9cd3f368cddb08c1ea7499af

multimedia/harvid/patches/patch-src_Makefile

@@ -0,0 +1,17 @@
+$NetBSD: patch-src_Makefile,v 1.1 2021/08/24 11:25:42 nia Exp $
+
+echoing escapes considered harmful. Use printf instead.
+
+Fixes build on NetBSD 9.99.x.
+
+--- src/Makefile.orig	2018-11-30 22:30:41.000000000 +0000
++++ src/Makefile
+@@ -16,7 +16,7 @@ ifeq ($(shell PKG_CONFIG_PATH=$(PKG_CONF
+   $(error "libpng is required - install libpng-dev")
+ endif
+
+-ifeq ($(shell $(ECHO) "\#include <stdio.h>\n\#include <jpeglib.h>\nint main() { struct jpeg_error_mgr jerr; jpeg_std_error(&jerr); return 0; }" | $(CC) -pipe -x c -o $(CONFIGTEMP) $(ARCHINCLUDES) $(LDFLAGS) - -ljpeg 2>/dev/null || echo no; $(RM) -f $(CONFIGTEMP)), no)
++ifeq ($(shell printf "#include <stdio.h>\n#include <jpeglib.h>\nint main() { struct jpeg_error_mgr jerr; jpeg_std_error(&jerr); return 0; }\n" | $(CC) -x c -o $(CONFIGTEMP) $(ARCHINCLUDES) $(LDFLAGS) - -ljpeg 2>/dev/null || echo no; $(RM) -f $(CONFIGTEMP)), no)
+   $(error "libjpeg is required - install libjpeg-dev, libjpeg8-dev or libjpeg62-dev")
+ endif
+