Set -nostdlib in CFLAGS and LDFLAGS before AC_PROG_CC if we
appear to be cross-compiling.
This makes the example kernel build work on my x86_64 system
with both
* native compile to generate i386 example kernel
./configure --enable-example-kernel
* cross-compile to generate mips example kernel
./configure --host=mips64-linux-gnu --enable-example-kernel
It remains to be verified how this works on other systems,
namely native mips systems, and non-x86 systems like arm.
Signed-off-by: Hans Ulrich Niedermann <h...@n-dimensional.de>
diff --git a/configure.ac b/configure.ac
index 830b1f57e..6b0718451 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,11 +22,18 @@ AM_INIT_AUTOMAKE([1.10.1])
# Programs
#
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+
+AS_IF([test "x$host" != "x$build"], [dnl
+ CFLAGS="-nostdlib $CFLAGS"
+ LDFLAGS="-nostdlib $LDFLAGS"
+])
+
AC_PROG_CC
AM_PROG_AS
dnl Build the example Multiboot2 kernel (if possible on this host)
-AC_CANONICAL_HOST
kernel_boot_arch=unsupported
kernel_ccasflags=
kernel_cflags=
@@ -57,8 +64,6 @@ AM_CONDITIONAL([BUILD_EXAMPLE_KERNEL],
[test "x$enable_example_kernel" = xyes &&
test "x$kernel_boot_arch" != "xunsupported"])
-CFLAGS="-nostdlib $CFLAGS"
-
dnl Output.
AC_CONFIG_FILES([Makefile doc/Makefile])
AC_OUTPUT
--
2.26.2
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