patch 8.2.2550: signal stack size is wrong with latest glibc 2.34
Problem: Signal stack size is wrong with latest glibc 2.34.
Solution: Use sysconf(_SC_SIGSTKSZ) if available. (Zdenek Dohnal, closes
#7895)
diff --git a/src/configure.ac b/src/configure.ac
index 58bfa19..798e9b8 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -4105,6 +4105,15 @@
AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYSCONF),
AC_MSG_RESULT(not usable))
+dnl check if we have _SC_SIGSTKSZ via sysconf()
+AC_MSG_CHECKING(for _SC_SIGSTKSZ via sysconf())
+AC_TRY_COMPILE(
+[#include <unistd.h>],
+[ (void)sysconf(_SC_SIGSTKSZ);
+ ],
+ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYSCONF_SIGSTKSZ),
+ AC_MSG_RESULT(not usable))
+
AC_CHECK_SIZEOF([int])
AC_CHECK_SIZEOF([long])
AC_CHECK_SIZEOF([time_t])