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BUG: Enable large files only if <cstdio> works 

Some AIX/gcc version combinations the <cstdio> header breaks when large
file support is enabled.  See this GCC issue for details:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20366

We work around the problem by enhancing the configuration check for
large file support to include <cstdio> when available.  This will cause
LFS to be disabled when the above problem occurs.
This commit is contained in:
Brad King 2009-07-27 16:45:15 -04:00
parent 40850e7f1f
commit cf1225b9af
2 changed files with 13 additions and 0 deletions
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5
Source/kwsys/CMakeLists.txt
View File

@ -337,14 +337,19 @@ ENDIF(NOT CMAKE_COMPILER_IS_GNUCXX)
#----------------------------------------------------------------------------- #-----------------------------------------------------------------------------
# Configure Large File Support. # Configure Large File Support.
KWSYS_PLATFORM_CXX_TEST(KWSYS_CXX_HAS_CSTDIO
"Checking whether header cstdio is available" DIRECT)
SET(KWSYS_LFS_AVAILABLE 0) SET(KWSYS_LFS_AVAILABLE 0)
IF(KWSYS_LFS_REQUESTED) IF(KWSYS_LFS_REQUESTED)
# Large File Support is requested. # Large File Support is requested.
SET(KWSYS_LFS_REQUESTED 1) SET(KWSYS_LFS_REQUESTED 1)
# Check for large file support. # Check for large file support.
SET(KWSYS_PLATFORM_CXX_TEST_DEFINES
-DKWSYS_CXX_HAS_CSTDIO=${KWSYS_CXX_HAS_CSTDIO})
KWSYS_PLATFORM_CXX_TEST_RUN(KWSYS_LFS_WORKS KWSYS_PLATFORM_CXX_TEST_RUN(KWSYS_LFS_WORKS
"Checking for Large File Support" DIRECT) "Checking for Large File Support" DIRECT)
SET(KWSYS_PLATFORM_CXX_TEST_DEFINES)
IF(KWSYS_LFS_WORKS) IF(KWSYS_LFS_WORKS)
SET(KWSYS_LFS_AVAILABLE 1) SET(KWSYS_LFS_AVAILABLE 1)

8
Source/kwsys/kwsysPlatformTestsCXX.cxx
View File

@ -91,6 +91,11 @@ bool f(const kwsys_stl::string& s) { return s != ""; }
int main() { return 0; } int main() { return 0; }
#endif #endif
#ifdef TEST_KWSYS_CXX_HAS_CSTDIO
#include <cstdio>
int main() { return 0; }
#endif
#ifdef TEST_KWSYS_CXX_HAS_CSTDDEF #ifdef TEST_KWSYS_CXX_HAS_CSTDDEF
#include <cstddef> #include <cstddef>
void f(size_t) {} void f(size_t) {}
@ -331,6 +336,9 @@ int main()
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <assert.h> #include <assert.h>
#if KWSYS_CXX_HAS_CSTDIO
# include <cstdio>
#endif
#include <stdio.h> #include <stdio.h>
int main(int, char **argv) int main(int, char **argv)