build: fix C string encoding for PRODUCT_DIR_ABS

Since the `PRODUCT_DIR_ABS` gyp variable is meant to be used in a C string in the OpenSSL config, provide a version of it that actually provides it in a way that is always usable as a C string. Otherwise, unescaped characters in the path can mess with the string definitions; for example, building in paths on Windows whose directories start with valid or invalid escape sequences (e.g.: `C:\...\x61foobar\...` or `C:\...\456789\...`) can result in failing builds or incorrect paths provided to OpenSSL. PR-URL: #56111 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: addaleax

deps/openssl/openssl.gyp

@@ -5,19 +5,13 @@
 'nasm_version%': '0.0',
 'openssl-cli': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)openssl-cli<(EXECUTABLE_SUFFIX)',
 'conditions': [
- ['OS == "win"',{
-'obj_dir_abs': '<(PRODUCT_DIR_ABS)/obj',
- }],
  ['GENERATOR == "ninja"',{
-'obj_dir_abs': '<(PRODUCT_DIR_ABS)/obj',
-'modules_dir': '<(PRODUCT_DIR_ABS)/obj/lib/openssl-modules',
+'modules_dir': '<(PRODUCT_DIR_ABS_CSTR)/obj/lib/openssl-modules',
  },{
-'obj_dir_abs%': '<(PRODUCT_DIR_ABS)/obj.target',
-'modules_dir': '<(PRODUCT_DIR_ABS)/obj.target/deps/openssl/lib/openssl-modules',
+'modules_dir': '<(PRODUCT_DIR_ABS_CSTR)/obj.target/deps/openssl/lib/openssl-modules',
  }],
  ['OS=="mac"',{
-'obj_dir_abs%': '<(PRODUCT_DIR_ABS)/obj.target',
-'modules_dir': '<(PRODUCT_DIR_ABS)/obj.target/deps/openssl/lib/openssl-modules',
+'modules_dir': '<(PRODUCT_DIR_ABS_CSTR)/obj.target/deps/openssl/lib/openssl-modules',
  }],
  ],
  },