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KWSys 2017-11-30 (fa1ab7b8)

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Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit fa1ab7b8d790498359ab1b1bff522a7401a918fc (master).

Upstream Shortlog
-----------------

Brad King (1):
      1b09cf0d Configure: Add KWSYS_FALLTHROUGH macro for C++ code
This commit is contained in:
KWSys Upstream
2017-11-30 08:15:37 -05:00
committed by Brad King
parent e8d0b4312e
commit 5fa414594e
3 changed files with 57 additions and 0 deletions
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1
CMakeLists.txt
View File

@@ -1033,6 +1033,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
)
ENDIF()
SET(KWSYS_CXX_TESTS ${KWSYS_CXX_TESTS}
testConfigure
testSystemTools
testCommandLineArguments
testCommandLineArguments1

26
Configure.hxx.in
View File

@@ -12,6 +12,31 @@
#define @KWSYS_NAMESPACE@_CXX_HAS_EXT_STDIO_FILEBUF_H \
@KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H@
#if defined(__SUNPRO_CC) && __SUNPRO_CC > 0x5130 && defined(__has_attribute)
#define @KWSYS_NAMESPACE@__has_cpp_attribute(x) __has_attribute(x)
#elif defined(__has_cpp_attribute)
#define @KWSYS_NAMESPACE@__has_cpp_attribute(x) __has_cpp_attribute(x)
#else
#define @KWSYS_NAMESPACE@__has_cpp_attribute(x) 0
#endif
#ifndef @KWSYS_NAMESPACE@_FALLTHROUGH
#if __cplusplus >= 201703L && @KWSYS_NAMESPACE@__has_cpp_attribute(fallthrough)
#define @KWSYS_NAMESPACE@_FALLTHROUGH [[fallthrough]]
#elif __cplusplus >= 201103L && \
@KWSYS_NAMESPACE@__has_cpp_attribute(gnu::fallthrough)
#define @KWSYS_NAMESPACE@_FALLTHROUGH [[gnu::fallthrough]]
#elif __cplusplus >= 201103L && \
@KWSYS_NAMESPACE@__has_cpp_attribute(clang::fallthrough)
#define @KWSYS_NAMESPACE@_FALLTHROUGH [[clang::fallthrough]]
#endif
#endif
#ifndef @KWSYS_NAMESPACE@_FALLTHROUGH
#define @KWSYS_NAMESPACE@_FALLTHROUGH static_cast<void>(0)
#endif
#undef @KWSYS_NAMESPACE@__has_cpp_attribute
/* If building a C++ file in kwsys itself, give the source file
access to the macros without a configured namespace. */
#if defined(KWSYS_NAMESPACE)
@@ -22,6 +47,7 @@
#define KWSYS_STL_HAS_WSTRING @KWSYS_NAMESPACE@_STL_HAS_WSTRING
#define KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H \
@KWSYS_NAMESPACE@_CXX_HAS_EXT_STDIO_FILEBUF_H
#define KWSYS_FALLTHROUGH @KWSYS_NAMESPACE@_FALLTHROUGH
#endif
#endif

30
testConfigure.cxx Normal file
View File

@@ -0,0 +1,30 @@
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
#include "kwsysPrivate.h"
#include KWSYS_HEADER(Configure.hxx)
// Work-around CMake dependency scanning limitation. This must
// duplicate the above list of headers.
#if 0
#include "Configure.hxx.in"
#endif
static bool testFallthrough(int n)
{
int r = 0;
switch (n) {
case 1:
++r;
KWSYS_FALLTHROUGH;
default:
++r;
}
return r == 2;
}
int testConfigure(int, char* [])
{
bool res = true;
res = testFallthrough(1) && res;
return res ? 0 : 1;
}