change for PATCH : Do not add -lresolv on non-Linux systems

[Yuping Luo]

Hello,

    The patch[1] define osname in Linux is "Linux", while it's "GNU/Linux"
maybe the following change is necessary to avoid build break.

yupluo01 at yupluo-ws:~/work/dev_platform/arm-linux-on-model/busybox$ git diff
diff --git a/Makefile.flags b/Makefile.flags
index 5673bc48a..01c9a3669 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -181,7 +181,7 @@ LDLIBS += $(if $(SELINUX_LIBS),$(SELINUX_LIBS:-l%=%),$(SELINUX_PC_MODULES:lib%=%
 endif

 ifeq ($(CONFIG_FEATURE_NSLOOKUP_BIG),y)
-ifeq ($(CONFIG_UNAME_OSNAME),Linux)
+ifneq ($(findstring Linux,$(CONFIG_UNAME_OSNAME)),)
 LDLIBS += resolv
 endif
 endif


ref:
   [1] http://lists.busybox.net/pipermail/busybox/2021-January/088426.html


Thanks,
Yuping
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