diff options
Diffstat (limited to 'm4/xc-am-iface.m4')
| -rw-r--r-- | m4/xc-am-iface.m4 | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/m4/xc-am-iface.m4 b/m4/xc-am-iface.m4 index 852d6e04c..1532ff834 100644 --- a/m4/xc-am-iface.m4 +++ b/m4/xc-am-iface.m4 @@ -73,3 +73,168 @@ dnl m4_define([$0], [])[]dnl ]) + +dnl _XC_AMEND_DISTCLEAN_BODY ([LIST-OF-SUBDIRS]) +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl This macro performs shell code embedding into +dnl configure script in order to modify distclean +dnl and maintainer-clean targets of makefiles which +dnl are located in given list of subdirs. + +m4_define([_XC_AMEND_DISTCLEAN_BODY], +[dnl +## ---------------------------------- ## +## Start of distclean amending code ## +## ---------------------------------- ## + +for xc_subdir in [$1] +do + +if test ! -f "$xc_subdir/Makefile"; then + echo "$xc_msg_err $xc_subdir/Makefile file not found. $xc_msg_abrt" >&2 + exit 1 +fi + +# Fetch dependency tracking file list from Makefile include lines. + +xc_inc_lines=`grep '^include .*(DEPDIR)' "$xc_subdir/Makefile" 2>/dev/null` +xc_cnt_words=`echo "$xc_inc_lines" | wc -w | tr -d "$xc_space$xc_tab"` + +# --disable-dependency-tracking might have been used, consequently +# there is nothing to amend without a dependency tracking file list. + +if test $xc_cnt_words -gt 0; then + +AC_MSG_NOTICE([amending $xc_subdir/Makefile]) + +# Build Makefile specific patch hunk. + +xc_p="$xc_subdir/xc_patch.tmp" + +xc_rm_depfiles=`echo "$xc_inc_lines" \ + | $SED 's%include% -rm -f%' 2>/dev/null` + +xc_dep_subdirs=`echo "$xc_inc_lines" \ + | $SED 's%include[[ ]][[ ]]*%%' 2>/dev/null \ + | $SED 's%(DEPDIR)/.*%(DEPDIR)%' 2>/dev/null \ + | sort | uniq` + +echo "$xc_rm_depfiles" >$xc_p + +for xc_dep_dir in $xc_dep_subdirs; do + echo "${xc_tab}@xm_dep_cnt=\`ls $xc_dep_dir | wc -l 2>/dev/null\`; \\" >>$xc_p + echo "${xc_tab}if test \$\$xm_dep_cnt -eq 0 && test -d $xc_dep_dir; then \\" >>$xc_p + echo "${xc_tab} rm -rf $xc_dep_dir; \\" >>$xc_p + echo "${xc_tab}fi" >>$xc_p +done + +# Build Makefile patching sed scripts. + +xc_s1="$xc_subdir/xc_script_1.tmp" +xc_s2="$xc_subdir/xc_script_2.tmp" +xc_s3="$xc_subdir/xc_script_3.tmp" + +cat >$xc_s1 <<\_EOT +/^distclean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ + s/^.*(DEPDIR)/___xc_depdir_line___/ +} +/^maintainer-clean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ + s/^.*(DEPDIR)/___xc_depdir_line___/ +} +_EOT + +cat >$xc_s2 <<\_EOT +/___xc_depdir_line___$/{ + N + /___xc_depdir_line___$/D +} +_EOT + +cat >$xc_s3 <<_EOT +/^___xc_depdir_line___/{ + r $xc_p + d +} +_EOT + +# Apply patch to Makefile and cleanup. + +$SED -f "$xc_s1" "$xc_subdir/Makefile" >"$xc_subdir/Makefile.tmp1" +$SED -f "$xc_s2" "$xc_subdir/Makefile.tmp1" >"$xc_subdir/Makefile.tmp2" +$SED -f "$xc_s3" "$xc_subdir/Makefile.tmp2" >"$xc_subdir/Makefile.tmp3" + +if test -f "$xc_subdir/Makefile.tmp3"; then + mv -f "$xc_subdir/Makefile.tmp3" "$xc_subdir/Makefile" +fi + +test -f "$xc_subdir/Makefile.tmp1" && rm -f "$xc_subdir/Makefile.tmp1" +test -f "$xc_subdir/Makefile.tmp2" && rm -f "$xc_subdir/Makefile.tmp2" +test -f "$xc_subdir/Makefile.tmp3" && rm -f "$xc_subdir/Makefile.tmp3" + +test -f "$xc_p" && rm -f "$xc_p" +test -f "$xc_s1" && rm -f "$xc_s1" +test -f "$xc_s2" && rm -f "$xc_s2" +test -f "$xc_s3" && rm -f "$xc_s3" + +fi + +done + +## -------------------------------- ## +## End of distclean amending code ## +## -------------------------------- ## +dnl +m4_define([$0], [])[]dnl +]) + + +dnl XC_AMEND_DISTCLEAN ([LIST-OF-SUBDIRS]) +dnl ------------------------------------------------- +dnl Public macro. +dnl +dnl This macro embeds shell code into configure script +dnl that amends, at configure runtime, the distclean +dnl target of Makefiles located in all subdirs given in +dnl the mandatory white-space separated list argument. +dnl +dnl Embedding only takes place when using automake 1.14 +dnl or newer, otherwise amending code is not included +dnl in generated configure script. +dnl +dnl distclean and maintainer-clean targets are modified +dnl to avoid unconditional removal of dependency subdirs +dnl which triggers distclean and maintainer-clean errors +dnl when using automake 'subdir-objects' option along +dnl with per-target objects. +dnl +dnl New behavior first removes each dependency tracking +dnl file independently, and only removes each dependency +dnl subdir when it finds out that it no longer holds any +dnl dependency tracking file. +dnl +dnl When configure option --disable-dependency-tracking +dnl is used no amending takes place given that there are +dnl no dependency tracking files. + +AC_DEFUN([XC_AMEND_DISTCLEAN], +[dnl +AC_PREREQ([2.50])dnl +dnl +m4_ifdef([_AC_OUTPUT_MAIN_LOOP], + [m4_provide_if([_AC_OUTPUT_MAIN_LOOP], [], + [m4_fatal([call to AC_OUTPUT needed before $0])])])dnl +dnl +m4_if([$#], [1], [], [m4_fatal([$0: wrong number of arguments])])dnl +m4_if([$1], [], [m4_fatal([$0: missing argument])])dnl +dnl +AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl +dnl +m4_ifdef([_AM_PROG_CC_C_O], +[ +_XC_AMEND_DISTCLEAN_BODY([$1]) +])dnl +m4_define([$0], [])[]dnl +]) + |