configure-allow-kernel-debugging-support-20020310

[openafs.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 95f6a53..b97d81e 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -47,6 +47,9 @@ AC_ARG_ENABLE(transarc-paths,
 AC_ARG_ENABLE(tivoli-tsm,
 [  --enable-tivoli-tsm                 Enable use of the Tivoli TSM API libraries for butc support],, enable_tivoli_tsm="no"
 )
+AC_ARG_ENABLE(debug-kernel,
+[  --enable-debug-kernel               enable compilation of the kernel module with debugging information (defaults to disabled)],, enable_debug_kernel="no"
+)
 
 dnl weird ass systems
 AC_AIX
@@ -67,6 +70,11 @@ AM_PROG_LEX
 
 OPENAFS_CHECK_BIGENDIAN
 
+KERN_DEBUG_OPT=
+if test "x$enable_debug_kernel" = "xyes"; then
+  KERN_DEBUG_OPT=-g
+fi
+
 AC_MSG_CHECKING(your OS)
 system=$host
 case $system in
@@ -117,6 +125,11 @@ case $system in
                fi
                AC_MSG_RESULT(linux)
                if test "x$enable_kernel_module" = "xyes"; then
+                OMIT_FRAME_POINTER=
+                if test "x$enable_debug_kernel" = "xno"; then
+                       OMIT_FRAME_POINTER=-fomit-frame-pointer
+                fi
+                AC_SUBST(OMIT_FRAME_POINTER)
                 ifdef([OPENAFS_CONFIGURE_LIBAFS],
                   [LINUX_BUILD_VNODE_FROM_INODE(src/config,afs)],
                   [LINUX_BUILD_VNODE_FROM_INODE(${srcdir}/src/config,src/afs/LINUX,${srcdir}/src/afs/LINUX)]
@@ -202,6 +215,7 @@ case $system in
                 AC_MSG_RESULT($system)
                 ;;
 esac
+AC_SUBST(KERN_DEBUG_OPT)
 
 if test "x$with_afs_sysname" != "x"; then
         AFS_SYSNAME="$with_afs_sysname"