./curlopt-constants.c:19:58: error: non-void function 'constant' should return a value [-Wreturn-type]

Interesting ... when I build WWW-Curl on windows, I get something similar: 
In file included from Curl.xs:581:0:
curlopt-constants.c: In function 'constant':
curlopt-constants.c:19:58: warning: 'return' with no value, in functio
+n returning non-void
             if (strEQ(name, "DID_MEMORY_FUNC_TYPEDEFS")) return CURL_
+DID_MEMORY_FUNC_TYPEDEFS;

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But, of course, it's only a warning for me - and this allows the build to complete successfully.

I *think* this warning is telling me that, although CURL_DID_MEMORY_FUNC_TYPEDEFS is defined, it hasn't been assigned a value.
In Curl.xs, try replacing: 
#include "curlopt-constants.c"

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with: 
#undef CURL_DID_MEMORY_FUNC_TYPEDEFS
#define CURL_DID_MEMORY_FUNC_TYPEDEFS 0
#include "curlopt-constants.c"

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That avoids the warning for me, and will hopefully avoid the error for you.

Cheers,
Rob

In reply to Re^4: installing WWW::Curl::Easy perl module in OS X 10.12.6 by syphilis
in thread installing WWW::Curl::Easy perl module in OS X 10.12.6 by igods

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