BUILD_CAUSE=UPSTREAMTRIGGER
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BUILD_NUMBER=1507
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EXECUTOR_NUMBER=0
GERRIT_BRANCH=master
GERRIT_CHANGE_COMMIT_MESSAGE=gcc.conf: Add --with-native-system-header-dir=/include when using newlib

Newlib installs its header files under
$(exec_prefix)/$(host_alias)/include, but by default GCC expects them
under $(exec_prefix)/$(host_alias)/usr/include.

Before this patch, GCC's configure sets inhibit_libc to 'true', thus
preventing libgcc2 from containing any code which requires libc
support.  For instance, this means that libgcov.a is essentially
empty.

This patch adds --with-headers=yes --with-native-system-header-dir=/include,
so that GCC's configure detects the presence of the needed headers.

--with-headers=yes is to be safe, as we don't want it to be set to no,
  see this part of GCC's configure:

--------------------------------------------------
: ${inhibit_libc=false}
if { { test x$host != x$target && test \"x$with_sysroot\" = x ; } ||
       test x$with_newlib = xyes ; } &&
     { test \"x$with_headers\" = xno || test ! -f \"$target_header_dir/stdio.h\"; } ; then
       inhibit_libc=true
fi
--------------------------------------------------

Change-Id: I4521aea24509dbf5021e844e4a9647df24221966

GERRIT_CHANGE_ID=I4521aea24509dbf5021e844e4a9647df24221966
GERRIT_CHANGE_NUMBER=45724
GERRIT_CHANGE_OWNER=\"Christophe Lyon\" <christophe.lyon@linaro.org>
GERRIT_CHANGE_OWNER_EMAIL=christophe.lyon@linaro.org
GERRIT_CHANGE_OWNER_NAME=Christophe Lyon
GERRIT_CHANGE_PRIVATE_STATE=false
GERRIT_CHANGE_SUBJECT=gcc.conf: Add --with-native-system-header-dir=/include when using newlib
GERRIT_CHANGE_URL=https://review.linaro.org/c/toolchain/abe/+/45724
GERRIT_CHANGE_WIP_STATE=false
GERRIT_EVENT_ACCOUNT=\"Christophe Lyon\" <christophe.lyon@linaro.org>
GERRIT_EVENT_ACCOUNT_EMAIL=christophe.lyon@linaro.org
GERRIT_EVENT_ACCOUNT_NAME=Christophe Lyon
GERRIT_EVENT_HASH=1309562017
GERRIT_EVENT_TYPE=patchset-created
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GERRIT_PATCHSET_REVISION=1956e915825a3e1c1ec99ee032f7c8fe51027cb7
GERRIT_PATCHSET_UPLOADER=\"Christophe Lyon\" <christophe.lyon@linaro.org>
GERRIT_PATCHSET_UPLOADER_EMAIL=christophe.lyon@linaro.org
GERRIT_PATCHSET_UPLOADER_NAME=Christophe Lyon
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GERRIT_PROJECT=toolchain/abe
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