These are copied from sim/common/Make-common.in.
On ppc the build fails without at least the 'info' target, e.g.:
Making info in ppc
make[4]: Entering directory '/<<BUILDDIR>>/gdb-10.2.2974.g5b45e89f56d+21.10.
20210510155809/build/default/sim/ppc'
make[4]: *** No rule to make target 'info'. Stop.
check:
+html:
+clean-html:
+install-html:
+
+info:
+clean-info:
+install-info:
+
+pdf:
+clean-pdf:
+install-pdf:
+
install: installdirs
a=`basename "$$(pwd)"`; \
n=`echo run | sed '$(program_transform_name)'`; \