fix: add explicit -fPIC to compiler flags (belt and suspenders with CMAKE_POSITION_INDEPENDENT_CODE)

Author: kylecarbs

patches/002-tls-model-dockerfile.patch

@@ -7,8 +7,8 @@ index 1111111..2222222 100644
  ARG RELEASE_FLAGS="-O3 -DNDEBUG=1"
  ARG LLVM_VERSION="19"
 -ARG DEFAULT_CFLAGS="-mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 "
-+# Added -ftls-model=global-dynamic for Node.js addon (dlopen) compatibility
-+ARG DEFAULT_CFLAGS="-mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 -ftls-model=global-dynamic "
++# Added -fPIC and -ftls-model=global-dynamic for Node.js addon (dlopen) compatibility
++ARG DEFAULT_CFLAGS="-fPIC -mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 -ftls-model=global-dynamic "
  ARG ENABLE_SANITIZERS=""
 
  # Use different base images for ARM64 vs x86_64

patches/003-tls-model-dockerfile-musl.patch

@@ -7,8 +7,8 @@ index 1111111..2222222 100644
  ARG LTO_FLAG="-flto=full -fwhole-program-vtables -fforce-emit-vtables "
  ARG LLVM_VERSION="19"
 -ARG DEFAULT_CFLAGS="-mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 "
-+# Added -ftls-model=global-dynamic for Node.js addon (dlopen) compatibility
-+ARG DEFAULT_CFLAGS="-mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 -ftls-model=global-dynamic "
++# Added -fPIC and -ftls-model=global-dynamic for Node.js addon (dlopen) compatibility
++ARG DEFAULT_CFLAGS="-fPIC -mno-omit-leaf-frame-pointer -g -fno-omit-frame-pointer -ffunction-sections -fdata-sections -faddrsig -fno-unwind-tables -fno-asynchronous-unwind-tables -DU_STATIC_IMPLEMENTATION=1 -ftls-model=global-dynamic "
 
  FROM alpine:3.21 as base
 

patches/004-tls-model-mac-release.patch

@@ -7,6 +7,7 @@ index 1111111..2222222 100644
  THIS_DIR=$(pwd)
 
 +# Added for Node.js addon (dlopen) compatibility
++LIBBUN_PIC_FLAG="-fPIC"
 +LIBBUN_TLS_FLAG="-ftls-model=global-dynamic"
 +
  # Set default values for environment variables that are not set.
@@ -24,8 +25,8 @@ index 1111111..2222222 100644
      -DCMAKE_CXX_COMPILER="$CMAKE_CXX_COMPILER" \
 -    -DCMAKE_C_FLAGS="-g $CMAKE_C_FLAGS -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
 -    -DCMAKE_CXX_FLAGS="-g $CMAKE_CXX_FLAGS -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
-+    -DCMAKE_C_FLAGS="-g $CMAKE_C_FLAGS $LIBBUN_TLS_FLAG -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
-+    -DCMAKE_CXX_FLAGS="-g $CMAKE_CXX_FLAGS $LIBBUN_TLS_FLAG -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
++    -DCMAKE_C_FLAGS="-g $CMAKE_C_FLAGS $LIBBUN_PIC_FLAG $LIBBUN_TLS_FLAG -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
++    -DCMAKE_CXX_FLAGS="-g $CMAKE_CXX_FLAGS $LIBBUN_PIC_FLAG $LIBBUN_TLS_FLAG -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source" \
      -DENABLE_MALLOC_HEAP_BREAKDOWN=$ENABLE_MALLOC_HEAP_BREAKDOWN \
      -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \