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-rw-r--r--cpukit/configure.ac22
1 files changed, 22 insertions, 0 deletions
diff --git a/cpukit/configure.ac b/cpukit/configure.ac
index 4d6aacdcb4..27c0133c68 100644
--- a/cpukit/configure.ac
+++ b/cpukit/configure.ac
@@ -32,6 +32,7 @@ else
fi
RTEMS_PROG_CC_FOR_TARGET([-ansi -fasm])
+RTEMS_PROG_CCAS
RTEMS_CANONICALIZE_TOOLS
AM_PROG_CC_C_O
AC_PROG_RANLIB
@@ -89,6 +90,22 @@ AC_CHECK_FUNCS([strsep strcasecmp snprintf])
AC_CHECK_FUNCS([bcopy bcmp])
AC_CHECK_FUNCS([isascii fileno])
+AS_IF([test x"${RTEMS_CPU}" = x"unix"],[
+## The code fragment below had been used in tools/cpu/unix/gensize.c.
+## FIXME:
+## * The pad very likely is not necessary.
+AC_CHECK_SIZEOF([CPU_CONTEXT],[],[
+#include <stdio.h>
+#include <setjmp.h>
+
+typedef struct {
+ jmp_buf regs;
+ int isr_level;
+ int pad[4]; /* just in case */
+} CPU_CONTEXT;
+])
+])
+
cat >>cpuopts.tmp <<\_ACEOF
/* target cpu dependent options file */
/* automatically generated -- DO NOT EDIT!! */
@@ -146,6 +163,11 @@ RTEMS_CPUOPT([RTEMS_VERSION],
["]_RTEMS_VERSION["],
[RTEMS version string])
+RTEMS_CPUOPT([SIZEOF_CPU_CONTEXT],
+ [test x"$RTEMS_CPU" = x"unix"],
+ [$ac_cv_sizeof_CPU_CONTEXT],
+ [The size of a 'CPU_CONTEXT', as computed by sizeof])
+
cat >>cpuopts.tmp <<\_ACEOF
#endif