Build fixes

Signed-off-by: Darby Johnston <darbyjohnston@yahoo.com>

Author: darbyjohnston

.github/workflows/python-package.yml

@@ -51,6 +51,12 @@ jobs:
         if: matrix.os == env.GH_COV_OS && github.actor != env.GH_DEPENDABOT
         run: |
           sudo apt-get install lcov
+      - name: Install ZLIB (Linux)
+        if: runner.os == 'Linux'
+        run: sudo apt-get install -y zlib1g-dev
+      - name: Install ZLIB (Windows)
+        if: runner.os == 'Windows'
+        run: vcpkg install zlib:x64-windows
       - name: Build
         run: |
           cmake -E make_directory ${{ env.OTIO_BUILD_DIR }}

CMakeLists.txt

@@ -40,7 +40,6 @@ option(OTIO_INSTALL_COMMANDLINE_TOOLS "Install the OTIO command line tools" ON)
 option(OTIO_FIND_IMATH                "Find Imath using find_package" OFF)
 option(OTIO_FIND_PYBIND11             "Find pybind11 using find_package" OFF)
 option(OTIO_FIND_RAPIDJSON            "Find RapidJSON using find_package" OFF)
-# Note that minizip-ng also requires zlib or zlib-ng.
 option(OTIO_FIND_MINIZIP_NG           "Find minizip-ng using find_package" OFF)
 set(OTIO_PYTHON_INSTALL_DIR "" CACHE STRING "Python installation dir (such as the site-packages dir)")
 
@@ -289,6 +288,8 @@ if(OTIO_FIND_MINIZIP_NG)
     endif()
 else()
     message(STATUS "Using src/deps/minizip-ng by default")
+    # Note that minizip-ng also requires zlib.
+    find_package(ZLIB REQUIRED)
 endif()
 
 # set up the internally hosted dependencies

src/deps/CMakeLists.txt

@@ -76,7 +76,7 @@ if(NOT OTIO_FIND_MINIZIP_NG)
     set(MZ_OPENSSL OFF)
     set(MZ_LIBBSD OFF)
     set(MZ_ICONV OFF)
-    set(MZ_FETCH_LIBS ON)
+    set(MZ_FETCH_LIBS OFF)
     set(SKIP_INSTALL_ALL ON)
     add_subdirectory(minizip-ng)
 endif()