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Revert "configure: check that errno is threadsafe"

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This reverts commit ee15f1b987.

The test relies on undefined behaviour (checking for errno in the
absence of an error condition) and was broken on OpenBSD.

Closes #4184.
This commit is contained in:
David Adam 2017-08-12 14:26:40 +08:00 committed by Kurtis Rader
parent 7b7bb5803f
commit 3a6ec68a32
1 changed files with 0 additions and 28 deletions
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28
configure.ac
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@ -579,34 +579,6 @@ else
AC_MSG_RESULT(no) AC_MSG_RESULT(no)
fi fi
# Check that threads actually work on Solaris
AC_MSG_CHECKING([for threadsafe errno])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([
#include <errno.h>
#include <pthread.h>
#include <signal.h>
void *thread1_func(void *p_arg)
{
errno = 1;
return 0;
}
],[
errno = 0;
pthread_t t1;
pthread_create(&t1, NULL, thread1_func, NULL);
pthread_join(t1, NULL);
return errno;
])],
[AC_MSG_RESULT(yes)],
[
AC_MSG_RESULT(no)
AC_MSG_FAILURE([errno is not threadsafe - check your compiler settings])
],
[AC_MSG_RESULT(crosscompiling, skipped)]
)
pcre2_min_version=10.21 pcre2_min_version=10.21
EXTRA_PCRE2= EXTRA_PCRE2=
AC_ARG_WITH( AC_ARG_WITH(