[Fedora kexec-tools 4/7] kexec: Provide a configure option --enable-static

[Vivek Goyal]

Currently on secureboot platform sys_kexec() will only trust executables
which were vailidly signed, memory locked and which were statically built.

So build kexec with static linking instead of dynamic one if one needs
to make it work with secureboot. Provide a config option --enable-static
to enable static linking.

Signed-off-by: Vivek Goyal <vgoyal at redhat.com>
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 7b61dbf..90b4c75 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,6 +68,8 @@ if test "x$TARGET_CFLAGS" = "x" ; then
 	TARGET_CFLAGS='-O2 -Wall'
 fi
 
+AC_ARG_ENABLE([static], AC_HELP_STRING([--enable-static],[Produce statically linked executables]), [ enable_static="$enableval"], [ enable_static=no])
+
 AC_ARG_WITH([objdir], AC_HELP_STRING([--with-objdir=<dir>],[select directory for object files]),
 	[ OBJDIR="$withval" ], [ OBJDIR="$OBJDIR" ])
 
@@ -144,6 +146,10 @@ AC_CHECK_PROG([FIND],     find,     find,     "no", [$PATH])
 AC_CHECK_PROG([XARGS],    xargs,    xargs,    "no", [$PATH])
 AC_CHECK_PROG([DIRNAME],  dirname,  dirname,  "no", [$PATH])
 
+if test "$enable_static" = yes ; then
+	CFLAGS="$CFLAGS -static"
+fi
+
 dnl See if I have a usable copy of zlib available
 if test "$with_zlib" = yes ; then
 	AC_CHECK_HEADER(zlib.h,
-- 
1.8.3.1