package/glibc: set --enable-kernel to match kernel

Glibc is currently configured without any "--enable-kernel" option.
This causes it to use the oldest possible kernel API, slowing it down
and preventing it from using any kernel features from later versions.

Since we are likely building a kernel and matching glibc together,
backwards compatability is probably unnecessary so this patch
unconditionally configures glibc with --enable-kernel set to
BR2_TOOLCHAIN_HEADERS_AT_LEAST.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Tested-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/glibc/glibc.mk b/package/glibc/glibc.mk
index e60575f62bd6ae4d4a781c2adb78112a8094608a..4a9ba0ea4e3a3bbc45faa4e9da48ad365de05e39 100644 (file)
--- a/package/glibc/glibc.mk
+++ b/package/glibc/glibc.mk
@@ -96,6 +96,7 @@ define GLIBC_CONFIGURE_CMDS
                --disable-profile \
                --without-gd \
                --enable-obsolete-rpc \
+               --enable-kernel=$(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)) \
                --with-headers=$(STAGING_DIR)/usr/include)
        $(GLIBC_ADD_MISSING_STUB_H)
 endef