• chakra https://gist.github.com/commitay/6cf65b25bcaf82ade3974abb3a1ed46a

• hfstospell https://gist.github.com/commitay/ff27e5b97e9d912ff894a09ac9cf5b17

• mapnik https://gist.github.com/commitay/c0f2c7a96caf8ddb789b36c2f036d1da

• node@8 https://gist.github.com/commitay/fb8b32937a8810cc482815e9f5995f3a

• php https://gist.github.com/commitay/60d1dbdc019af4bc523579cffcb2efee

• widelands https://gist.github.com/commitay/9bc9d72fcf057b5e48953b5013fb6891

• zorba https://gist.github.com/commitay/3de92343a3e8ea254f30d48c9a3e5909

All of the failing projects are probably affected by http://site.icu-project.org/download/61#TOC-Migration-Issues

PHP issue reported upstream here: https://bugs.php.net/bug.php?id=76153

Thanks @SMillerDev!

We can add ENV.append "CPPFLAGS", "-DU_USING_ICU_NAMESPACE=1" to each of the formulae that broke as long as the breakage also gets reported to each upstream.

For chakra --extra-defines=U_USING_ICU_NAMESPACE=1

For mapnik

diff --git a/Formula/mapnik.rb b/Formula/mapnik.rb
index aba19d3..7705656 100644
--- a/Formula/mapnik.rb
+++ b/Formula/mapnik.rb
@@ -50,6 +50,7 @@ class Mapnik < Formula
             "CXX=\"#{ENV.cxx}\"",
             "PREFIX=#{prefix}",
             "CUSTOM_CXXFLAGS=\"-DBOOST_EXCEPTION_DISABLE\"",
+            "CUSTOM_DEFINES=-DU_USING_ICU_NAMESPACE=1",
             "ICU_INCLUDES=#{icu}/include",
             "ICU_LIBS=#{icu}/lib",
             "JPEG_INCLUDES=#{jpeg}/include",

For widelands ENV.append "CXXFLAGS", "-DU_USING_ICU_NAMESPACE=1"

For node the issue was fixed in nodejs/node@b8f47b2. But the issue with node@8 is somehow expected, because every node version officially only support the icu version it's ships with, which is icu 60 for node@8. So we either have to change the formula to build against the bundled icu again, build it with -DU_USING_ICU_NAMESPACE=1 or apply said patch.

For zorba, also ENV.append "CXXFLAGS", "-DU_USING_ICU_NAMESPACE=1"

@chrmoritz why would upstream refuse to apply backwards compatible fixes to the 8.x branch? I don't think we should assume that.

@srl295 any chance of getting nodejs/node@b8f47b2 back ported to Node 8.x LTS?

@chrmoritz

every node version officially only support the icu version it's ships with, which is icu 60 for node@8

That's not officially true (officially not true?)… I opened nodejs/node#19624 2 days ago in master explicitly to support ICU 58.2. Actually I had opened nodejs/Intl#35 ( now nodejs/node#19657 ) to explicitly document which versions are supported, but have not done it yet. I'll try to at least document something.

@ilovezfs

@srl295 any chance of getting nodejs/node@b8f47b2 back ported to Node 8.x LTS?

You've done 90% of the work already (asking, identifying the commit). Yes, that's a great idea.

We can add ENV.append "CPPFLAGS", "-DU_USING_ICU_NAMESPACE=1" to each of the formulae that broke as long as the breakage also gets reported to each upstream.

Please ask upstreams to actually use the namespace (that's what it's for!) instead of just adding the flag. Adding the flag is a bandage for the time being, but not the best practice.

Please ask upstreams to actually use the namespace (that's what it's for!) instead of just adding the flag. Adding the flag is a bandage for the time being, but not the best practice.

@srl295 Definitely. We will ask them to use the namespace. We will not ask them to add the flag to their build scripts.