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issue-504: disable tls on mingw

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Which is known to fail.



git-svn-id: http://gperftools.googlecode.com/svn/trunk@207 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
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alkondratenko@gmail.com 2013-03-11 19:16:47 +00:00
parent 8bf4522aa5
commit 7896dcb9db
1 changed files with 9 additions and 1 deletions
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10
configure.ac
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@ -295,10 +295,18 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
# Note, however, that our code tickles a bug in gcc < 4.1.2
# involving TLS and -fPIC (which our libraries will use) on x86:
# http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
#
# And mingw also does compile __thread but resultant code actually
# fails to work correctly at least in some not so ancient version:
# http://mingw-users.1079350.n2.nabble.com/gcc-4-4-multi-threaded-exception-handling-amp-thread-specifier-not-working-td3440749.html
AC_MSG_CHECKING([for __thread])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && ((__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 1) || (__GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ < 2))
#error gcc has this bug: http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
#endif], [static __thread int p = 0])],
#endif
#if defined(__MINGW32__)
#error mingw doesn't really support tls
#endif
], [static __thread int p = 0])],
[AC_DEFINE(HAVE_TLS, 1,
Define to 1 if compiler supports __thread)
AC_MSG_RESULT([yes])],