tools: expat: fix build on older host systems

Expat release 2.2.2 requires support for either syscall(SYS_getrandom) which
is available on Linux 3.17 or support for getrandom() which is only available
in glibc 2.25 or later.

Since some of our builders still run on Linux 3.16, we need to forcibly
disable the use of getrandom() for the host builds.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/tools/expat/Makefile b/tools/expat/Makefile
index 697d3f60d1f5cffe9d01bbb8cb6cb3f5560f5bc4..246089d609476cfb5670fe8a74a1e845102921d0 100644 (file)
--- a/tools/expat/Makefile
+++ b/tools/expat/Makefile
@@ -18,6 +18,9 @@ HOST_BUILD_PARALLEL:=1
 
 include $(INCLUDE_DIR)/host-build.mk
 
+HOST_CONFIGURE_VARS += \
+       CPPFLAGS="$(HOST_CFLAGS) -DXML_POOR_ENTROPY"
+
 define Host/Install
        $(MAKE) -C $(HOST_BUILD_DIR) install
 endef