Fix build of boost::iostreams zlib filter

.ci_support/linux_64_.yaml

@@ -19,9 +19,13 @@ pin_run_as_build:
     max_pin: x
   xz:
     max_pin: x.x
+  zlib:
+    max_pin: x.x
 target_platform:
 - linux-64
 xz:
 - '5.2'
+zlib:
+- '1.2'
 zstd:
 - '1.5'

.ci_support/linux_aarch64_.yaml

@@ -23,9 +23,13 @@ pin_run_as_build:
     max_pin: x
   xz:
     max_pin: x.x
+  zlib:
+    max_pin: x.x
 target_platform:
 - linux-aarch64
 xz:
 - '5.2'
+zlib:
+- '1.2'
 zstd:
 - '1.5'

.ci_support/linux_ppc64le_.yaml

@@ -19,9 +19,13 @@ pin_run_as_build:
     max_pin: x
   xz:
     max_pin: x.x
+  zlib:
+    max_pin: x.x
 target_platform:
 - linux-ppc64le
 xz:
 - '5.2'
+zlib:
+- '1.2'
 zstd:
 - '1.5'

.ci_support/osx_64_.yaml

@@ -19,9 +19,13 @@ pin_run_as_build:
     max_pin: x
   xz:
     max_pin: x.x
+  zlib:
+    max_pin: x.x
 target_platform:
 - osx-64
 xz:
 - '5.2'
+zlib:
+- '1.2'
 zstd:
 - '1.5'

.ci_support/osx_arm64_.yaml

@@ -19,9 +19,13 @@ pin_run_as_build:
     max_pin: x
   xz:
     max_pin: x.x
+  zlib:
+    max_pin: x.x
 target_platform:
 - osx-arm64
 xz:
 - '5.2'
+zlib:
+- '1.2'
 zstd:
 - '1.5'

.ci_support/win_64_.yaml

@@ -9,7 +9,11 @@ cxx_compiler:
 pin_run_as_build:
   bzip2:
     max_pin: x
+  zlib:
+    max_pin: x.x
 target_platform:
 - win-64
+zlib:
+- '1.2'
 zstd:
 - '1.5'

recipe/meta.yaml

@@ -14,7 +14,7 @@ source:
     - e193f080c7d209516ac9b712fa0c50bb08026fa2.patch
 
 build:
-  number: 6
+  number: 7
 
 requirements:
   build:
@@ -24,6 +24,7 @@ requirements:
     - icu               # [unix]
     - xz                # [unix]
     - bzip2
+    - zlib
     - zstd
 
   run:
@@ -36,6 +37,10 @@ requirements:
     - libboost <0
 
 test:
+  files:
+    - test
+  requires:
+    - {{ compiler('cxx') }}    # [build_platform == target_platform]
   commands:
     # Verify Python headers are removed.
     - "! test -f $PREFIX/include/boost/python.hpp"                      # [unix]

recipe/run_test.bat

@@ -0,0 +1,4 @@
+:: Test boost::iostreams zlib filter support
+cd test
+cl.exe /EHsc /MD /DBOOST_ALL_DYN_LINK /DBOOST_ZLIB_BINARY=kernel32 /I%PREFIX%\Library\include test_iostreams_zlib.cpp /link /libpath:%PREFIX%\Library\lib
+if errorlevel 1 exit 1

recipe/run_test.sh

@@ -0,0 +1,8 @@
+# Skip compile tests if we are cross-compiling
+if [[ "${build_platform}" != "${target_platform}" ]]; then
+  exit 0
+fi
+
+# Test boost::iostreams zlib filter support
+cd test
+${CXX} -I$PREFIX/include -L$PREFIX/lib test_iostreams_zlib.cpp -lboost_iostreams

recipe/test/test_iostreams_zlib.cpp

@@ -0,0 +1,19 @@
+// Ensure that boost::iostreams includes the zlib filter support
+
+#include <fstream>
+#include <iostream>
+#include <boost/iostreams/filtering_streambuf.hpp>
+#include <boost/iostreams/copy.hpp>
+#include <boost/iostreams/filter/zlib.hpp>
+
+int main()
+{
+    using namespace std;
+
+    ifstream file("hello.z", ios_base::in | ios_base::binary);
+    boost::iostreams::filtering_streambuf<boost::iostreams::input> in;
+    in.push(boost::iostreams::zlib_decompressor());
+    in.push(file);
+    boost::iostreams::copy(in, cout);
+    return 0;
+}