[PATCH] config: add 32-bit cross-compilation x86 target

[Bruce Richardson <bruce.richardson@intel.com>]

To simplify building 32-bit binaries on 64-bit system, we can supply a
cross-compilation file which provides the relevant compiler flags and
settings needed - '-m32' compile/link flag, and appropriate
PKG_CONFIG_LIBDIR value. This latter setting will depend upon the layout
format of the particular OS/distro in use, so initially add a cross file
with paths set for Debian or Ubuntu systems.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---

The generation of 32-bit cross-files for other distros is left as an
exercise for the reader! I suspect that for Fedora/RHEL and Arch
variants that only the "pkg_config_libdir" and "libdir" setting should
be adjusted. However, I don't currently have a machine set up to test
that assumption, so getting the ball rolling for now with just this
patch to get feedback.

---

 config/x86/cross-debian-32bit | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 config/x86/cross-debian-32bit

diff --git a/config/x86/cross-debian-32bit b/config/x86/cross-debian-32bit
new file mode 100644
index 0000000000..2f6e4714cb
--- /dev/null
+++ b/config/x86/cross-debian-32bit
@@ -0,0 +1,22 @@
+[binaries]
+c = 'cc'
+cpp = 'c++'
+ar = 'ar'
+strip = 'strip'
+pkg-config = 'pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = 'x86'
+cpu = 'native'
+endian = 'little'
+
+[properties]
+pkg_config_libdir = '/usr/lib/i386-linux-gnu/pkgconfig'
+
+[built-in options]
+c_args = '-m32'
+c_link_args = '-m32'
+cpp_args = '-m32'
+cpp_link_args = '-m32'
+libdir = 'lib/i386-linux-gnu'
-- 
2.43.0