/usr/src/gcc-8/debian/patches/config-ml.diff is in gcc-8-source 8-20180414-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | # DP: - Disable some biarch libraries for biarch builds.
# DP: - Fix multilib builds on kernels which don't support all multilibs.
Index: b/src/config-ml.in
===================================================================
--- a/src/config-ml.in
+++ b/src/config-ml.in
@@ -475,6 +475,25 @@ powerpc*-*-* | rs6000*-*-*)
;;
esac
+if [ -z "$biarch_multidir_names" ]; then
+ biarch_multidir_names="libiberty libstdc++-v3 libgfortran libmudflap libssp libffi libobjc libgomp"
+ echo "WARNING: biarch_multidir_names is unset. Use default value:"
+ echo " $biarch_multidir_names"
+fi
+ml_srcbase=`basename $ml_realsrcdir`
+old_multidirs="${multidirs}"
+multidirs=""
+for x in ${old_multidirs}; do
+ case " $x " in
+ " 32 "|" n32 "|" x32 "|" 64 "|" hf "|" sf "|" m4-nofpu ")
+ case "$biarch_multidir_names" in
+ *"$ml_srcbase"*) multidirs="${multidirs} ${x}" ;;
+ esac
+ ;;
+ *) multidirs="${multidirs} ${x}" ;;
+ esac
+done
+
# Remove extraneous blanks from multidirs.
# Tests like `if [ -n "$multidirs" ]' require it.
multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
@@ -877,9 +896,19 @@ if [ -n "${multidirs}" ] && [ -z "${ml_n
fi
fi
+ ml_configure_args=
+ for arg in ${ac_configure_args}
+ do
+ case $arg in
+ *CC=*) ml_configure_args=${ml_config_env} ;;
+ *CXX=*) ml_configure_args=${ml_config_env} ;;
+ *) ;;
+ esac
+ done
+
if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
- "${ac_configure_args}" ${ml_config_env} ${ml_srcdiroption} ; then
+ "${ac_configure_args}" ${ml_configure_args} ${ml_config_env} ${ml_srcdiroption} ; then
true
else
exit 1
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