extensions: Makefile: Merge initext targets

Abstract initext*.c and .initext*.dd stamp file recipes so a single one
serves for all variants.

Signed-off-by: Phil Sutter <phil@nwl.cc>

diff --git a/extensions/GNUmakefile.in b/extensions/GNUmakefile.in
index 0239a06a90cd1d99636eec9d7aeee8b409999d8c..188e7a790256689b50dfec6c0b40d94ba9f9ba2a 100644 (file)
--- a/extensions/GNUmakefile.in
+++ b/extensions/GNUmakefile.in
@@ -175,111 +175,33 @@ initexta_func := $(addprefix arpt_,${pfa_build_mod})
 initext4_func := $(addprefix ipt_,${pf4_build_mod})
 initext6_func := $(addprefix ip6t_,${pf6_build_mod})
 
-.initext.dd: FORCE
-       @echo "${initext_func}" >$@.tmp; \
-       cmp -s $@ $@.tmp || mv $@.tmp $@; \
-       rm -f $@.tmp;
-
-.initextb.dd: FORCE
-       @echo "${initextb_func}" >$@.tmp; \
-       cmp -s $@ $@.tmp || mv $@.tmp $@; \
-       rm -f $@.tmp;
-
-.initexta.dd: FORCE
-       @echo "${initexta_func}" >$@.tmp; \
-       cmp -s $@ $@.tmp || mv $@.tmp $@; \
-       rm -f $@.tmp;
-
-.initext4.dd: FORCE
-       @echo "${initext4_func}" >$@.tmp; \
-       cmp -s $@ $@.tmp || mv $@.tmp $@; \
-       rm -f $@.tmp;
+initexts := ext exta extb ext4 ext6
+initext_depfiles = $(patsubst %,.init%.dd,${initexts})
+initext_sources = $(patsubst %,init%.c,${initexts})
 
-.initext6.dd: FORCE
-       @echo "${initext6_func}" >$@.tmp; \
+${initext_depfiles}: FORCE
+       @echo "$(value $(patsubst .%.dd,%,$@)_func)" >$@.tmp; \
        cmp -s $@ $@.tmp || mv $@.tmp $@; \
        rm -f $@.tmp;
 
-initext.c: .initext.dd
-       ${AM_VERBOSE_GEN}
-       @( \
-       echo "" >$@; \
-       for i in ${initext_func}; do \
-               echo "extern void lib$${i}_init(void);" >>$@; \
-       done; \
-       echo "void init_extensions(void);" >>$@; \
-       echo "void init_extensions(void)" >>$@; \
-       echo "{" >>$@; \
-       for i in ${initext_func}; do \
-               echo  " ""lib$${i}_init();" >>$@; \
-       done; \
-       echo "}" >>$@; \
-       );
-
-initextb.c: .initextb.dd
-       ${AM_VERBOSE_GEN}
-       @( \
-       echo "" >$@; \
-       for i in ${initextb_func}; do \
-               echo "extern void lib$${i}_init(void);" >>$@; \
-       done; \
-       echo "void init_extensionsb(void);" >>$@; \
-       echo "void init_extensionsb(void)" >>$@; \
-       echo "{" >>$@; \
-       for i in ${initextb_func}; do \
-               echo  " ""lib$${i}_init();" >>$@; \
-       done; \
-       echo "}" >>$@; \
-       );
-
-initexta.c: .initexta.dd
+${initext_sources}: %.c: .%.dd
        ${AM_VERBOSE_GEN}
        @( \
+       initext_func="$(value $(basename $@)_func)"; \
+       funcname="init_extensions$(patsubst initext%.c,%,$@)"; \
        echo "" >$@; \
-       for i in ${initexta_func}; do \
+       for i in $${initext_func}; do \
                echo "extern void lib$${i}_init(void);" >>$@; \
        done; \
-       echo "void init_extensionsa(void);" >>$@; \
-       echo "void init_extensionsa(void)" >>$@; \
+       echo "void $${funcname}(void);" >>$@; \
+       echo "void $${funcname}(void)" >>$@; \
        echo "{" >>$@; \
-       for i in ${initexta_func}; do \
+       for i in $${initext_func}; do \
                echo  " ""lib$${i}_init();" >>$@; \
        done; \
        echo "}" >>$@; \
        );
 
-initext4.c: .initext4.dd
-       ${AM_VERBOSE_GEN}
-       @( \
-       echo "" >$@; \
-       for i in ${initext4_func}; do \
-               echo "extern void lib$${i}_init(void);" >>$@; \
-       done; \
-       echo "void init_extensions4(void);" >>$@; \
-       echo "void init_extensions4(void)" >>$@; \
-       echo "{" >>$@; \
-       for i in ${initext4_func}; do \
-               echo  " ""lib$${i}_init();" >>$@; \
-       done; \
-       echo "}" >>$@; \
-       );
-
-initext6.c: .initext6.dd
-       ${AM_VERBOSE_GEN}
-       @( \
-       echo "" >$@; \
-       for i in ${initext6_func}; do \
-               echo "extern void lib$${i}_init(void);" >>$@; \
-       done; \
-       echo "void init_extensions6(void);" >>$@; \
-       echo "void init_extensions6(void)" >>$@; \
-       echo "{" >>$@; \
-       for i in ${initext6_func}; do \
-               echo " ""lib$${i}_init();" >>$@; \
-       done; \
-       echo "}" >>$@; \
-       );
-
 #
 #      Manual pages
 #
@@ -308,8 +230,8 @@ man_run    = \
                fi; \
        done >$@;
 
-matches.man: .initext.dd .initextb.dd .initexta.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
+matches.man: ${initext_depfiles} $(wildcard ${srcdir}/lib*.man)
        $(call man_run,$(call ex_matches,${pfx_build_mod} ${pfb_build_mod} ${pfa_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))
 
-targets.man: .initext.dd .initextb.dd .initexta.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
+targets.man: ${initext_depfiles} $(wildcard ${srcdir}/lib*.man)
        $(call man_run,$(call ex_targets,${pfx_build_mod} ${pfb_build_mod} ${pfa_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))