checkasm: detect presence of sys/prctl.h

Author: JDarnley

configure.ac

@@ -188,7 +188,7 @@ AC_CHECK_HEADERS([net/netmap.h], AM_CONDITIONAL(HAVE_NETMAP, true), AM_CONDITION
 #include <net/if.h>])
 
 # Checks for header files.
-AC_CHECK_HEADERS([fcntl.h stddef.h stdint.h stdlib.h string.h unistd.h sys/ioctl.h semaphore.h features.h net/if.h])
+AC_CHECK_HEADERS([fcntl.h stddef.h stdint.h stdlib.h string.h unistd.h sys/ioctl.h semaphore.h features.h net/if.h sys/prctl.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_HEADER_STDBOOL

tests/checkasm/checkasm.c

@@ -766,7 +766,7 @@ int main(int argc, char *argv[])
     sigaction(SIGILL,  &signal_handler_act, NULL);
     sigaction(SIGSEGV, &signal_handler_act, NULL);
 #endif
-#if HAVE_PRCTL && defined(PR_SET_UNALIGN)
+#if HAVE_SYS_PRCTL_H && defined(PR_SET_UNALIGN)
     prctl(PR_SET_UNALIGN, PR_UNALIGN_SIGBUS);
 #endif
 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL

tests/checkasm/checkasm.h

@@ -40,7 +40,6 @@
 #define HAVE_IO_H 0
 #define HAVE_ISATTY 1
 #define HAVE_MACH_ABSOLUTE_TIME 0
-#define HAVE_PRCTL 1
 #define HAVE_RDTSC 0
 #define HAVE_SETCONSOLETEXTATTRIBUTE 0