diff --git a/.cirrus.yml b/.cirrus.yml
index 02c7551b3500..0caa1a226807 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -64,6 +64,8 @@ task:
   matrix:
     - name: build_all_plugins_ipa
       script: ./script/build_all_plugins_app.sh ios --no-codesign
+    - name: lint_darwin_plugins
+      script: ./script/lint_darwin_plugins.sh
     - name: build-ipas+drive-examples
       env:
         PATH: $PATH:/usr/local/bin
diff --git a/packages/camera/CHANGELOG.md b/packages/camera/CHANGELOG.md
index b6c68aa7cf9f..c32ef103ae1c 100644
--- a/packages/camera/CHANGELOG.md
+++ b/packages/camera/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.5.5
+
+* Define clang modules for iOS.
+
 ## 0.5.4+3
 
 * Update and migrate iOS example project.
diff --git a/packages/camera/ios/Tests/CameraPluginTests.m b/packages/camera/ios/Tests/CameraPluginTests.m
new file mode 100644
index 000000000000..e5be3980bad0
--- /dev/null
+++ b/packages/camera/ios/Tests/CameraPluginTests.m
@@ -0,0 +1,16 @@
+@import camera;
+@import XCTest;
+
+@interface CameraPluginTests : XCTestCase
+@end
+
+@implementation CameraPluginTests
+
+- (void)testModuleImport {
+  // This test will fail to compile if the module cannot be imported.
+  // Make sure this plugin supports modules. See https://github.com/flutter/flutter/issues/41007.
+  // If not already present, add this line to the podspec:
+  // s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
+}
+
+@end
diff --git a/packages/camera/ios/camera.podspec b/packages/camera/ios/camera.podspec
index 0db7485005ed..dfe566ca79cc 100644
--- a/packages/camera/ios/camera.podspec
+++ b/packages/camera/ios/camera.podspec
@@ -15,7 +15,10 @@ A new flutter plugin project.
   s.source_files = 'Classes/**/*'
   s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'
-  
-  s.ios.deployment_target = '8.0'
-end
+  s.platform = :ios, '8.0'
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS' => 'armv7 arm64 x86_64' }
 
+  s.test_spec 'Tests' do |test_spec|
+    test_spec.source_files = 'Tests/**/*'
+  end
+end
diff --git a/packages/camera/pubspec.yaml b/packages/camera/pubspec.yaml
index 9640da5ff166..9ed9b55203f0 100644
--- a/packages/camera/pubspec.yaml
+++ b/packages/camera/pubspec.yaml
@@ -2,7 +2,7 @@ name: camera
 description: A Flutter plugin for getting information about and controlling the
   camera on Android and iOS. Supports previewing the camera feed, capturing images, capturing video,
   and streaming image buffers to dart.
-version: 0.5.4+3
+version: 0.5.5
 
 authors:
   - Flutter Team <flutter-dev@googlegroups.com>
diff --git a/script/build_all_plugins_app.sh b/script/build_all_plugins_app.sh
index dcf3bcdfd2a3..6b70ee00e9b1 100755
--- a/script/build_all_plugins_app.sh
+++ b/script/build_all_plugins_app.sh
@@ -4,8 +4,8 @@
 # sure all first party plugins can be compiled together.
 
 # So that users can run this script from anywhere and it will work as expected.
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null && pwd)"
-REPO_DIR="$(dirname "$SCRIPT_DIR")"
+readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null && pwd)"
+readonly REPO_DIR="$(dirname "$SCRIPT_DIR")"
 
 source "$SCRIPT_DIR/common.sh"
 check_changed_packages > /dev/null
diff --git a/script/check_publish.sh b/script/check_publish.sh
index 39a6894cf5fa..05a237ee97ee 100755
--- a/script/check_publish.sh
+++ b/script/check_publish.sh
@@ -5,8 +5,8 @@ set -e
 # It doesn't actually publish anything.
 
 # So that users can run this script from anywhere and it will work as expected.
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
-REPO_DIR="$(dirname "$SCRIPT_DIR")"
+readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+readonly REPO_DIR="$(dirname "$SCRIPT_DIR")"
 
 source "$SCRIPT_DIR/common.sh"
 
diff --git a/script/incremental_build.sh b/script/incremental_build.sh
index adb0acc72b97..0e0fb051e70c 100755
--- a/script/incremental_build.sh
+++ b/script/incremental_build.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 set -e
 
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
-REPO_DIR="$(dirname "$SCRIPT_DIR")"
+readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+readonly REPO_DIR="$(dirname "$SCRIPT_DIR")"
 
 source "$SCRIPT_DIR/common.sh"
 
diff --git a/script/lint_darwin_plugins.sh b/script/lint_darwin_plugins.sh
new file mode 100755
index 000000000000..5e5d018c391c
--- /dev/null
+++ b/script/lint_darwin_plugins.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+# This script lints and tests iOS and macOS platform code.
+
+# So that users can run this script from anywhere and it will work as expected.
+readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+readonly REPO_DIR="$(dirname "$SCRIPT_DIR")"
+
+source "$SCRIPT_DIR/common.sh"
+
+function lint_package() {
+  local package_name="$1"
+  local package_dir="${REPO_DIR}/packages/$package_name/"
+  local failure_count=0
+
+  for podspec in "$(find "${package_dir}" -name '*\.podspec')"; do
+    echo "Linting $package_name.podspec"
+
+    # Build as frameworks.
+    # This will also run any tests set up as a test_spec. See https://blog.cocoapods.org/CocoaPods-1.3.0.
+    # TODO: Add --analyze flag https://github.com/flutter/flutter/issues/41443
+    # TODO: Remove --allow-warnings flag https://github.com/flutter/flutter/issues/41444
+    pod lib lint "${podspec}" --allow-warnings --fail-fast --silent
+    if [[ "$?" -ne 0 ]]; then
+      error "Package ${package_name} has framework issues. Run \"pod lib lint $podspec\" to inspect."
+      failure_count+=1
+    fi
+
+    # Build as libraries.
+    pod lib lint "${podspec}" --allow-warnings --use-libraries --fail-fast --silent
+    if [[ "$?" -ne 0 ]]; then
+      error "Package ${package_name} has library issues. Run \"pod lib lint $podspec --use-libraries\" to inspect."
+      failure_count+=1
+    fi
+  done
+
+  return "${failure_count}"
+}
+
+function lint_packages() {
+  if [[ ! "$(which pod)" ]]; then 
+    echo "pod not installed. Skipping."
+    return
+  fi
+
+  # TODO: These packages have linter errors. Remove plugins from this list as linter issues are fixed.
+  local skipped_packages=(
+    'android_alarm_manager'
+    'android_intent'
+    'battery'
+    'connectivity'
+    'device_info'
+    'google_maps_flutter'
+    'google_sign_in'
+    'image_picker'
+    'in_app_purchase'
+    'instrumentation_adapter'
+    'local_auth'
+    'package_info'
+    'path_provider'
+    'quick_actions'
+    'sensors'
+    'share'
+    'shared_preferences'
+    'url_launcher'
+    'video_player'
+    'webview_flutter'
+  )
+
+  local failure_count=0
+  for package_name in "$@"; do
+    if [[ "${skipped_packages[*]}" =~ "${package_name}" ]]; then
+      continue
+    fi      
+    lint_package "${package_name}"
+    failure_count+="$?"
+  done
+
+  return "${failure_count}"
+}
+
+# Sets CHANGED_PACKAGE_LIST
+check_changed_packages
+
+if [[ "${#CHANGED_PACKAGE_LIST[@]}" != 0 ]]; then
+  lint_packages "${CHANGED_PACKAGE_LIST[@]}"
+fi