Add initial support for the MUSL C library.
Summary:
This patch adds the LIBCXX_LIBC_IS_MUSL cmake option to allow the
building of libcxx with the Musl C library. The option is necessary as
Musl does not provide any predefined macro in order to test for its
presence, like GLIBC. Most of the changes specify the correct path to
choose through the various #if/#else constructs in the locale code.
Depends on D13407.
Reviewers: mclow.lists, jroelofs, EricWF
Subscribers: jfb, tberghammer, danalbert, srhines, cfe-commits
Differential Revision: http://reviews.llvm.org/D13673
llvm-svn: 252457
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 8c58e92cd8ba0afea045c36b9b5b254b5b9e4810
diff --git a/src/locale.cpp b/src/locale.cpp
index bdc73e1..11c266c 100644
--- a/src/locale.cpp
+++ b/src/locale.cpp
@@ -812,7 +812,8 @@
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ? _DefaultRuneLocale.__mapupper[c] : c;
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+ defined(__NetBSD__) || defined(_LIBCPP_HAS_MUSL_LIBC)
return isascii(c) ? ctype<char>::__classic_upper_table()[c] : c;
#else
return (isascii(c) && iswlower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'a'+L'A' : c;
@@ -825,7 +826,8 @@
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ? _DefaultRuneLocale.__mapupper[*low] : *low;
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+ defined(__NetBSD__) || defined(_LIBCPP_HAS_MUSL_LIBC)
*low = isascii(*low) ? ctype<char>::__classic_upper_table()[*low]
: *low;
#else
@@ -839,7 +841,8 @@
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ? _DefaultRuneLocale.__maplower[c] : c;
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+ defined(__NetBSD__) || defined(_LIBCPP_HAS_MUSL_LIBC)
return isascii(c) ? ctype<char>::__classic_lower_table()[c] : c;
#else
return (isascii(c) && isupper_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'A'+'a' : c;
@@ -852,7 +855,8 @@
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ? _DefaultRuneLocale.__maplower[*low] : *low;
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+ defined(__NetBSD__) || defined(_LIBCPP_HAS_MUSL_LIBC)
*low = isascii(*low) ? ctype<char>::__classic_lower_table()[*low]
: *low;
#else
@@ -921,8 +925,8 @@
static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(c)]) : c;
#elif defined(__NetBSD__)
return static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]);
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
- return isascii(c) ?
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
+ return isascii(c) ?
static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]) : c;
#else
return (isascii(c) && islower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-'a'+'A' : c;
@@ -938,7 +942,7 @@
static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(*low)]) : *low;
#elif defined(__NetBSD__)
*low = static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(*low)]);
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
*low = isascii(*low) ?
static_cast<char>(__classic_upper_table()[static_cast<size_t>(*low)]) : *low;
#else
@@ -955,7 +959,7 @@
static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(c)]) : c;
#elif defined(__NetBSD__)
return static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(c)]);
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
return isascii(c) ?
static_cast<char>(__classic_lower_table()[static_cast<size_t>(c)]) : c;
#else
@@ -971,7 +975,7 @@
*low = isascii(*low) ? static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(*low)]) : *low;
#elif defined(__NetBSD__)
*low = static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(*low)]);
-#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
*low = isascii(*low) ? static_cast<char>(__classic_lower_table()[static_cast<size_t>(*low)]) : *low;
#else
*low = (isascii(*low) && isupper_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-'A'+'a' : *low;
@@ -1012,7 +1016,7 @@
return low;
}
-#ifdef __EMSCRIPTEN__
+#if defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
extern "C" const unsigned short ** __ctype_b_loc();
extern "C" const int ** __ctype_tolower_loc();
extern "C" const int ** __ctype_toupper_loc();
@@ -1114,7 +1118,7 @@
return _ctype+1; // internal ctype mask table defined in msvcrt.dll
// This is assumed to be safe, which is a nonsense assumption because we're
// going to end up dereferencing it later...
-#elif defined(__EMSCRIPTEN__)
+#elif defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
return *__ctype_b_loc();
#elif defined(_NEWLIB_VERSION)
// Newlib has a 257-entry table in ctype_.c, where (char)0 starts at [1].
@@ -1157,7 +1161,7 @@
return _C_toupper_tab_ + 1;
}
-#elif defined(__EMSCRIPTEN__)
+#elif defined(__EMSCRIPTEN__) || defined(_LIBCPP_HAS_MUSL_LIBC)
const int*
ctype<char>::__classic_lower_table() _NOEXCEPT
{
@@ -1169,7 +1173,7 @@
{
return *__ctype_toupper_loc();
}
-#endif // __GLIBC__ || __EMSCRIPTEN__ || __NETBSD__
+#endif // __GLIBC__ || __NETBSD__ || __EMSCRIPTEN__ || defined(_LIBCPP_HAS_MUSL_LIBC)
// template <> class ctype_byname<char>