build: use fewer cat processes

* src/Makefile.am (libvirt.syms): Let cat loop for us.

diff --git a/src/Makefile.am b/src/Makefile.am
index 33b4ab0fe12accad754f6d477fd93fe6960ddbd0..25b6e3f6311452effd6c9ba56efab2e1e698673b 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1457,9 +1457,7 @@ libvirt.syms: libvirt_public.syms $(USED_SYM_FILES) \
        printf '\n\n# Private symbols\n\n' >>$@-tmp && \
        printf 'LIBVIRT_PRIVATE_$(VERSION) {\n\n'  >>$@-tmp && \
        printf 'global:\n\n' >>$@-tmp && \
-       for file in $(USED_SYM_FILES); do \
-           cat $$file >>$@-tmp; \
-       done && \
+       cat $(USED_SYM_FILES) >>$@-tmp && \
        printf '\n\nlocal:\n*;\n\n};' >>$@-tmp && \
        chmod a-w $@-tmp && \
        mv $@-tmp libvirt.syms