Merge pull request swiftlang#34524 from apple/stdlib-Conditionally-compile-swift_strto-wrappers

[stdlib] Conditionally compile swift_strto* wrappers

Author: kastiglione

stdlib/public/stubs/Stubs.cpp

@@ -378,6 +378,28 @@ T _swift_strto(const char *nptr, char **endptr) {
   return ParsedValue;
 }
 
+#if defined(__OpenBSD__) || defined(_WIN32) || defined(__CYGWIN__) || defined(__HAIKU__)
+#define NEED_SWIFT_STRTOD_L
+#define strtod_l swift_strtod_l
+#define NEED_SWIFT_STRTOF_L
+#define strtof_l swift_strtof_l
+#define NEED_SWIFT_STRTOLD_L
+#define strtold_l swift_strtold_l
+#elif defined(__ANDROID__)
+#if __ANDROID_API__ < 21 // Introduced in Android API 21 - L
+#define NEED_SWIFT_STRTOLD_L
+#define strtold_l swift_strtold_l
+#endif
+
+#if __ANDROID_API__ < 26 // Introduced in Android API 26 - O
+#define NEED_SWIFT_STRTOD_L
+#define strtod_l swift_strtod_l
+#define NEED_SWIFT_STRTOF_L
+#define strtof_l swift_strtof_l
+#endif
+#endif
+
+#if defined(NEED_SWIFT_STRTOD_L)
 static double swift_strtod_l(const char *nptr, char **endptr, locale_t loc) {
 #if defined(_WIN32)
   return _strtod_l(nptr, endptr, getCLocale());
@@ -387,7 +409,9 @@ static double swift_strtod_l(const char *nptr, char **endptr, locale_t loc) {
   return strtod(nptr, endptr);
 #endif
 }
+#endif
 
+#if defined(NEED_SWIFT_STRTOF_L)
 static float swift_strtof_l(const char *nptr, char **endptr, locale_t loc) {
 #if defined(_WIN32)
   return _strtof_l(nptr, endptr, getCLocale());
@@ -397,7 +421,9 @@ static float swift_strtof_l(const char *nptr, char **endptr, locale_t loc) {
   return strtof(nptr, endptr);
 #endif
 }
+#endif
 
+#if defined(NEED_SWIFT_STRTOLD_L)
 static long double swift_strtold_l(const char *nptr, char **endptr,
                                    locale_t loc) {
 #if defined(_WIN32)
@@ -410,21 +436,11 @@ static long double swift_strtold_l(const char *nptr, char **endptr,
   return strtold(nptr, endptr);
 #endif
 }
-
-#if defined(__OpenBSD__) || defined(_WIN32) || defined(__CYGWIN__) || defined(__HAIKU__)
-#define strtod_l swift_strtod_l
-#define strtof_l swift_strtof_l
-#define strtold_l swift_strtold_l
-#elif defined(__ANDROID__)
-#if __ANDROID_API__ < 21 // Introduced in Android API 21 - L
-#define strtold_l swift_strtold_l
 #endif
 
-#if __ANDROID_API__ < 26 // Introduced in Android API 26 - O
-#define strtod_l swift_strtod_l
-#define strtof_l swift_strtof_l
-#endif
-#endif
+#undef NEED_SWIFT_STRTOD_L
+#undef NEED_SWIFT_STRTOF_L
+#undef NEED_SWIFT_STRTOLD_L
 
 static inline void _swift_set_errno(int to) {
 #if defined(_WIN32)