diff --git a/.github/workflows/build-all.yml b/.github/workflows/build-all.yml
index 1b453323..883dec49 100644
--- a/.github/workflows/build-all.yml
+++ b/.github/workflows/build-all.yml
@@ -287,7 +287,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: arm64
-      target_libc: musl
+      target_environment: musl
       enable_v8: false
 
   linux_musl_arm64_v8:
@@ -301,7 +301,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: arm64
-      target_libc: musl
+      target_environment: musl
       enable_v8: true
 
   linux_musl_x64:
@@ -313,7 +313,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: x64
-      target_libc: musl
+      target_environment: musl
       enable_v8: false
 
   linux_musl_x64_v8:
@@ -327,7 +327,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: x64
-      target_libc: musl
+      target_environment: musl
       enable_v8: true
 
   linux_musl_x86:
@@ -339,7 +339,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: x86
-      target_libc: musl
+      target_environment: musl
       enable_v8: false
 
   linux_musl_x86_v8:
@@ -353,7 +353,7 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: linux
       target_cpu: x86
-      target_libc: musl
+      target_environment: musl
       enable_v8: true
 
   mac_arm64:
diff --git a/.github/workflows/build-one.yml b/.github/workflows/build-one.yml
index 83dad895..3ac9ac24 100644
--- a/.github/workflows/build-one.yml
+++ b/.github/workflows/build-one.yml
@@ -30,12 +30,16 @@ on:
           - x64
           - x86
           - wasm
-      target_libc:
-        description: Target libc
+      target_environment:
+        description: Target environment
         type: choice
+        default: ''
         options:
-          - default
+          - ''
+          - device
+          - catalyst
           - musl
+          - simulator
       enable_v8:
         description: Enable V8
         type: boolean
@@ -62,6 +66,6 @@ jobs:
       is_debug: ${{ github.event.inputs.is_debug == 'true' }}
       target_os: ${{ github.event.inputs.target_os }}
       target_cpu: ${{ github.event.inputs.target_cpu }}
-      target_libc: ${{ github.event.inputs.target_libc }}
+      target_environment: ${{ github.event.inputs.target_environment }}
       enable_v8: ${{ github.event.inputs.enable_v8 == 'true' }}
       emsdk_version: ${{ github.event.inputs.emsdk_version }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 610c6901..29aa9665 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,8 +31,8 @@ on:
         description: Target (CPU arm|arm64|x64|x86|wasm)
         type: string
         required: true
-      target_libc:
-        description: Target libc (empty string or "musl")
+      target_environment:
+        description: Target environment (device|catalyst|musl|simulator)
         type: string
         required: false
         default: ''
@@ -59,7 +59,7 @@ jobs:
           ARTIFACT="pdfium"
           [ "${{inputs.enable_v8}}" == "true" ] && ARTIFACT="$ARTIFACT-v8"
           ARTIFACT="$ARTIFACT-${{inputs.target_os}}"
-          [ "${{inputs.target_libc}}" != "" ] && ARTIFACT="$ARTIFACT-${{inputs.target_libc}}"
+          [ "${{inputs.target_environment}}" != "" ] && ARTIFACT="$ARTIFACT-${{inputs.target_environment}}"
           [ "${{inputs.target_os}}" != "${{inputs.target_cpu}}" ] && ARTIFACT="$ARTIFACT-${{inputs.target_cpu}}"
           [ "${{inputs.is_debug}}" == "true" ] && ARTIFACT="$ARTIFACT-debug"
           echo "artifact=$ARTIFACT" >> $GITHUB_OUTPUT
@@ -72,7 +72,7 @@ jobs:
           PDFium_IS_DEBUG=${{ inputs.is_debug }}
           PDFium_TARGET_CPU=${{ inputs.target_cpu }}
           PDFium_TARGET_OS=${{ inputs.target_os }}
-          PDFium_TARGET_LIBC=${{ inputs.target_libc }}
+          PDFium_TARGET_ENVIRONMENT=${{ inputs.target_environment }}
           PDFium_ENABLE_V8=${{ inputs.enable_v8 }}
           PDFium_VERSION=${{ inputs.version }}
           EMSDK_VERSION=${{ inputs.emsdk_version }}
diff --git a/.github/workflows/patch.yml b/.github/workflows/patch.yml
index 1c187f67..e2da7937 100644
--- a/.github/workflows/patch.yml
+++ b/.github/workflows/patch.yml
@@ -86,4 +86,4 @@ jobs:
       if: always() && steps.checkout.outcome == 'success'
       env:
         PDFium_TARGET_OS: linux
-        PDFium_TARGET_LIBC: musl
\ No newline at end of file
+        PDFium_TARGET_ENVIRONMENT: musl
diff --git a/build.sh b/build.sh
index da7bf788..8aa3ec18 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,8 @@
 
 OS_NAMES="android|ios|linux|mac|wasm|win"
 CPU_NAMES="arm|arm64|x64|x86|wasm"
+ENV_NAMES="catalyst|device|musl|simulator"
+OS_ENV_COMBINATIONS="linux musl|ios (catalyst|device|simulator)"
 STEP_REGEX="[0-9]"
 
 START_STEP=0
@@ -11,18 +13,18 @@ then
   echo "PDFium build script.
 https://github.com/bblanchon/pdfium-binaries
 
-Usage $0 [options] os cpu
+Usage $0 [options] os cpu [env]
 
 Arguments:
    os       = Target OS ($OS_NAMES)
    cpu      = Target CPU ($CPU_NAMES)
+   env      = Target environment ($ENV_NAMES)
 
 Options:
   -b branch = Chromium branch (default=main)
   -s 0-9    = Set start step (default=0)
   -d        = debug build
-  -j        = enable v8
-  -m        = build fo musl"
+  -j        = enable v8"
   exit
 fi
 
@@ -41,10 +43,6 @@ do
       export PDFium_ENABLE_V8=true
       ;;
 
-    m)
-      export PDFium_TARGET_LIBC=musl
-      ;;
-
     s)
       START_STEP="$OPTARG"
       ;;
@@ -62,7 +60,7 @@ then
   exit 1
 fi
 
-if [[ $# -gt 2 ]]
+if [[ $# -gt 3 ]]
 then
   echo "Too many arguments"
   exit 1
@@ -80,6 +78,21 @@ then
   exit 1
 fi
 
+if [[ $# -eq 3 ]]
+then
+  if  [[ ! $3 =~ ^($ENV_NAMES)$ ]]
+  then
+    echo "Unknown environment: $3"
+    exit 1
+  fi
+
+  if  [[ ! "$1 $3" =~ ^($OS_ENV_COMBINATIONS)$ ]]
+  then
+    echo "OS $1 doesn't support environment $3"
+    exit 1
+  fi
+fi
+
 if [[ ! $START_STEP =~ ^($STEP_REGEX)$ ]]
 then
   echo "Invalid step number: $START_STEP"
@@ -88,6 +101,7 @@ fi
 
 export PDFium_TARGET_OS=$1
 export PDFium_TARGET_CPU=$2
+export PDFium_TARGET_ENVIRONMENT=${3:-}
 
 set -x
 
diff --git a/steps/01-install.sh b/steps/01-install.sh
index c2d75d07..0f4762b8 100755
--- a/steps/01-install.sh
+++ b/steps/01-install.sh
@@ -2,7 +2,7 @@
 
 PATH_FILE=${GITHUB_PATH:-$PWD/.path}
 TARGET_OS=${PDFium_TARGET_OS:?}
-TARGET_LIBC=${PDFium_TARGET_LIBC:-default}
+TARGET_ENVIRONMENT=${PDFium_TARGET_ENVIRONMENT:-}
 TARGET_CPU=${PDFium_TARGET_CPU:?}
 CURRENT_CPU=${PDFium_CURRENT_CPU:-x64}
 MUSL_URL=${MUSL_URL:-https://musl.cc}
@@ -40,7 +40,7 @@ case "$TARGET_OS" in
     sudo apt-get update
     sudo apt-get install -y cmake pkg-config
 
-    if [ "$TARGET_LIBC" == "musl" ]; then
+    if [ "$TARGET_ENVIRONMENT" == "musl" ]; then
 
       case "$TARGET_CPU" in
         x86)
diff --git a/steps/03-patch.sh b/steps/03-patch.sh
index c8f29351..8d80f474 100755
--- a/steps/03-patch.sh
+++ b/steps/03-patch.sh
@@ -3,7 +3,7 @@
 PATCHES="$PWD/patches"
 SOURCE="${PDFium_SOURCE_DIR:-pdfium}"
 OS="${PDFium_TARGET_OS:?}"
-TARGET_LIBC="${PDFium_TARGET_LIBC:-default}"
+TARGET_ENVIRONMENT="${PDFium_TARGET_ENVIRONMENT:-}"
 
 pushd "${SOURCE}"
 
@@ -42,7 +42,7 @@ case "$OS" in
     ;;
 esac
 
-case "$TARGET_LIBC" in
+case "$TARGET_ENVIRONMENT" in
   musl)
     git -C build apply -v "$PATCHES/musl/build.patch"
     mkdir -p "build/toolchain/linux/musl"
diff --git a/steps/05-configure.sh b/steps/05-configure.sh
index 778bf1ba..c1f65ccc 100755
--- a/steps/05-configure.sh
+++ b/steps/05-configure.sh
@@ -4,7 +4,7 @@ OS=${PDFium_TARGET_OS:?}
 SOURCE=${PDFium_SOURCE_DIR:-pdfium}
 BUILD=${PDFium_BUILD_DIR:-$SOURCE/out}
 TARGET_CPU=${PDFium_TARGET_CPU:?}
-TARGET_LIBC=${PDFium_TARGET_LIBC:-default}
+TARGET_ENVIRONMENT=${PDFium_TARGET_ENVIRONMENT:-default}
 ENABLE_V8=${PDFium_ENABLE_V8:-false}
 IS_DEBUG=${PDFium_IS_DEBUG:-false}
 
@@ -32,6 +32,7 @@ mkdir -p "$BUILD"
       echo "default_min_sdk_version = 21"
       ;;
     ios)
+      [ -n "$TARGET_ENVIRONMENT" ] && echo "target_environment = \"$TARGET_ENVIRONMENT\""
       echo "ios_enable_code_signing = false"
       echo "use_blink = true"
       [ "$ENABLE_V8" == "true" ] && [ "$TARGET_CPU" == "arm64" ] && echo 'arm_control_flow_integrity = "none"'
@@ -50,7 +51,7 @@ mkdir -p "$BUILD"
       ;;
   esac
 
-  case "$TARGET_LIBC" in
+  case "$TARGET_ENVIRONMENT" in
     musl)
       echo 'is_musl = true'
       echo 'is_clang = false'
diff --git a/steps/08-test.sh b/steps/08-test.sh
index 700b8ec7..54cd9661 100755
--- a/steps/08-test.sh
+++ b/steps/08-test.sh
@@ -2,7 +2,7 @@
 
 OS=${PDFium_TARGET_OS:?}
 CPU="${PDFium_TARGET_CPU:?}"
-TARGET_LIBC="${PDFium_TARGET_LIBC:-default}"
+TARGET_ENVIRONMENT="${PDFium_TARGET_ENVIRONMENT:-}"
 SOURCE_DIR="$PWD/example"
 CMAKE_ARGS=()
 CAN_RUN_ON_HOST=false
@@ -56,7 +56,7 @@ case "$OS" in
   linux)
     case "$CPU" in
       arm)
-        if [ "$TARGET_LIBC" == "musl" ]; then
+        if [ "$TARGET_ENVIRONMENT" == "musl" ]; then
           PREFIX="arm-linux-musleabihf-"
         else
           PREFIX="arm-linux-gnueabihf-"
@@ -64,7 +64,7 @@ case "$OS" in
         fi
         ;;
       arm64)
-        if [ "$TARGET_LIBC" == "musl" ]; then
+        if [ "$TARGET_ENVIRONMENT" == "musl" ]; then
           PREFIX="aarch64-linux-musl-"
         else
           PREFIX="aarch64-linux-gnu-"
@@ -72,7 +72,7 @@ case "$OS" in
         fi
         ;;
       x86)
-        if [ "$TARGET_LIBC" == "musl" ]; then
+        if [ "$TARGET_ENVIRONMENT" == "musl" ]; then
           PREFIX="i686-linux-musl-"
         else
           CAN_RUN_ON_HOST=true
@@ -83,7 +83,7 @@ case "$OS" in
         )
         ;;
       x64)
-        if [ "$TARGET_LIBC" == "musl" ]; then
+        if [ "$TARGET_ENVIRONMENT" == "musl" ]; then
           PREFIX="x86_64-linux-musl-"
         else
           CAN_RUN_ON_HOST=true
diff --git a/steps/09-pack.sh b/steps/09-pack.sh
index 0d6ce0b5..88802193 100755
--- a/steps/09-pack.sh
+++ b/steps/09-pack.sh
@@ -3,18 +3,18 @@
 IS_DEBUG=${PDFium_IS_DEBUG:-false}
 ENABLE_V8=${PDFium_ENABLE_V8:-false}
 OS=${PDFium_TARGET_OS:?}
-TARGET_LIBC=${PDFium_TARGET_LIBC:-default}
+TARGET_ENVIRONMENT=${PDFium_TARGET_ENVIRONMENT:-}
 CPU=${PDFium_TARGET_CPU:?}
 STAGING="$PWD/staging"
 
 ARTIFACT_BASE="$PWD/pdfium"
 [ "$ENABLE_V8" == "true" ] && ARTIFACT_BASE="$ARTIFACT_BASE-v8"
 ARTIFACT_BASE="$ARTIFACT_BASE-$OS"
-[ "$TARGET_LIBC" != "default" ] && ARTIFACT_BASE="$ARTIFACT_BASE-$TARGET_LIBC"
+[ -n "$TARGET_ENVIRONMENT" ] && ARTIFACT_BASE="$ARTIFACT_BASE-$TARGET_ENVIRONMENT"
 [ "$OS" != "$CPU" ] && ARTIFACT_BASE="$ARTIFACT_BASE-$CPU"
 [ "$IS_DEBUG" == "true" ] && ARTIFACT_BASE="$ARTIFACT_BASE-debug"
 ARTIFACT="$ARTIFACT_BASE.tgz"
 
 pushd "$STAGING"
 tar cvzf "$ARTIFACT" -- *
-popd
\ No newline at end of file
+popd