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253 lines
7.4 KiB
253 lines
7.4 KiB
#--------------------------------------------------------------------------- |
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# |
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# xc-am-iface.m4 |
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# |
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# Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se> |
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# |
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# Permission to use, copy, modify, and distribute this software for any |
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# purpose with or without fee is hereby granted, provided that the above |
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# copyright notice and this permission notice appear in all copies. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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# |
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#--------------------------------------------------------------------------- |
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# serial 1 |
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dnl _XC_AUTOMAKE_BODY |
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dnl ------------------------------------------------- |
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dnl Private macro. |
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dnl |
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dnl This macro performs embedding of automake initialization |
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dnl code into configure script. When automake version 1.14 or |
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dnl newer is used at configure script generation time, this |
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dnl results in 'subdir-objects' automake option being used. |
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dnl When using automake versions older than 1.14 this option |
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dnl is not used when generating configure script. |
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dnl |
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dnl Existence of automake _AM_PROG_CC_C_O m4 private macro |
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dnl is used to differentiate automake version 1.14 from older |
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dnl ones which lack this macro. |
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m4_define([_XC_AUTOMAKE_BODY], |
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[dnl |
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## --------------------------------------- ## |
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## Start of automake initialization code ## |
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## --------------------------------------- ## |
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m4_ifdef([_AM_PROG_CC_C_O], |
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[ |
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AM_INIT_AUTOMAKE([subdir-objects]) |
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],[ |
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AM_INIT_AUTOMAKE |
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])dnl |
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## ------------------------------------- ## |
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## End of automake initialization code ## |
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## ------------------------------------- ## |
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dnl |
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m4_define([$0], [])[]dnl |
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]) |
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dnl XC_AUTOMAKE |
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dnl ------------------------------------------------- |
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dnl Public macro. |
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dnl |
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dnl This macro embeds automake machinery into configure |
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dnl script regardless of automake version used in order |
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dnl to generate configure script. |
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dnl |
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dnl When using automake version 1.14 or newer, automake |
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dnl initialization option 'subdir-objects' is used to |
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dnl generate the configure script, otherwise this option |
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dnl is not used. |
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AC_DEFUN([XC_AUTOMAKE], |
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[dnl |
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AC_PREREQ([2.50])dnl |
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dnl |
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AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl |
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dnl |
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_XC_AUTOMAKE_BODY |
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dnl |
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m4_ifdef([AM_INIT_AUTOMAKE], |
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[m4_undefine([AM_INIT_AUTOMAKE])])dnl |
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dnl |
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m4_define([$0], [])[]dnl |
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]) |
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dnl _XC_AMEND_DISTCLEAN_BODY ([LIST-OF-SUBDIRS]) |
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dnl ------------------------------------------------- |
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dnl Private macro. |
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dnl |
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dnl This macro performs shell code embedding into |
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dnl configure script in order to modify distclean |
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dnl and maintainer-clean targets of makefiles which |
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dnl are located in given list of subdirs. |
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dnl |
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dnl See XC_AMEND_DISTCLEAN comments for details. |
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m4_define([_XC_AMEND_DISTCLEAN_BODY], |
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[dnl |
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## ---------------------------------- ## |
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## Start of distclean amending code ## |
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## ---------------------------------- ## |
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for xc_subdir in [$1] |
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do |
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if test ! -f "$xc_subdir/Makefile"; then |
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echo "$xc_msg_err $xc_subdir/Makefile file not found. $xc_msg_abrt" >&2 |
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exit 1 |
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fi |
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# Fetch dependency tracking file list from Makefile include lines. |
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xc_inc_lines=`grep '^include .*(DEPDIR)' "$xc_subdir/Makefile" 2>/dev/null` |
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xc_cnt_words=`echo "$xc_inc_lines" | wc -w | tr -d "$xc_space$xc_tab"` |
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# --disable-dependency-tracking might have been used, consequently |
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# there is nothing to amend without a dependency tracking file list. |
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if test $xc_cnt_words -gt 0; then |
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AC_MSG_NOTICE([amending $xc_subdir/Makefile]) |
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# Build Makefile specific patch hunk. |
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xc_p="$xc_subdir/xc_patch.tmp" |
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xc_rm_depfiles=`echo "$xc_inc_lines" \ |
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| $SED 's%include% -rm -f%' 2>/dev/null` |
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xc_dep_subdirs=`echo "$xc_inc_lines" \ |
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| $SED 's%include[[ ]][[ ]]*%%' 2>/dev/null \ |
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| $SED 's%(DEPDIR)/.*%(DEPDIR)%' 2>/dev/null \ |
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| sort | uniq` |
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echo "$xc_rm_depfiles" >$xc_p |
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for xc_dep_dir in $xc_dep_subdirs; do |
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echo "${xc_tab}@xm_dep_cnt=\`ls $xc_dep_dir | wc -l 2>/dev/null\`; \\" >>$xc_p |
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echo "${xc_tab}if test \$\$xm_dep_cnt -eq 0 && test -d $xc_dep_dir; then \\" >>$xc_p |
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echo "${xc_tab} rm -rf $xc_dep_dir; \\" >>$xc_p |
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echo "${xc_tab}fi" >>$xc_p |
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done |
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# Build Makefile patching sed scripts. |
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xc_s1="$xc_subdir/xc_script_1.tmp" |
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xc_s2="$xc_subdir/xc_script_2.tmp" |
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xc_s3="$xc_subdir/xc_script_3.tmp" |
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cat >$xc_s1 <<\_EOT |
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/^distclean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ |
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s/^.*(DEPDIR)/___xc_depdir_line___/ |
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} |
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/^maintainer-clean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ |
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s/^.*(DEPDIR)/___xc_depdir_line___/ |
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} |
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_EOT |
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cat >$xc_s2 <<\_EOT |
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/___xc_depdir_line___$/{ |
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N |
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/___xc_depdir_line___$/D |
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} |
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_EOT |
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cat >$xc_s3 <<_EOT |
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/^___xc_depdir_line___/{ |
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r $xc_p |
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d |
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} |
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_EOT |
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# Apply patch to Makefile and cleanup. |
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$SED -f "$xc_s1" "$xc_subdir/Makefile" >"$xc_subdir/Makefile.tmp1" |
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$SED -f "$xc_s2" "$xc_subdir/Makefile.tmp1" >"$xc_subdir/Makefile.tmp2" |
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$SED -f "$xc_s3" "$xc_subdir/Makefile.tmp2" >"$xc_subdir/Makefile.tmp3" |
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if test -f "$xc_subdir/Makefile.tmp3"; then |
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mv -f "$xc_subdir/Makefile.tmp3" "$xc_subdir/Makefile" |
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fi |
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test -f "$xc_subdir/Makefile.tmp1" && rm -f "$xc_subdir/Makefile.tmp1" |
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test -f "$xc_subdir/Makefile.tmp2" && rm -f "$xc_subdir/Makefile.tmp2" |
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test -f "$xc_subdir/Makefile.tmp3" && rm -f "$xc_subdir/Makefile.tmp3" |
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test -f "$xc_p" && rm -f "$xc_p" |
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test -f "$xc_s1" && rm -f "$xc_s1" |
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test -f "$xc_s2" && rm -f "$xc_s2" |
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test -f "$xc_s3" && rm -f "$xc_s3" |
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fi |
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done |
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## -------------------------------- ## |
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## End of distclean amending code ## |
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## -------------------------------- ## |
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dnl |
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m4_define([$0], [])[]dnl |
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]) |
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dnl XC_AMEND_DISTCLEAN ([LIST-OF-SUBDIRS]) |
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dnl ------------------------------------------------- |
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dnl Public macro. |
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dnl |
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dnl This macro embeds shell code into configure script |
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dnl that amends, at configure runtime, the distclean |
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dnl and maintainer-clean targets of Makefiles located |
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dnl in all subdirs given in the mandatory white-space |
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dnl separated list argument. |
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dnl |
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dnl Embedding only takes place when using automake 1.14 |
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dnl or newer, otherwise amending code is not included |
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dnl in generated configure script. |
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dnl |
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dnl distclean and maintainer-clean targets are modified |
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dnl to avoid unconditional removal of dependency subdirs |
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dnl which triggers distclean and maintainer-clean errors |
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dnl when using automake 'subdir-objects' option along |
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dnl with per-target objects and source files existing in |
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dnl multiple subdirs used for different build targets. |
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dnl |
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dnl New behavior first removes each dependency tracking |
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dnl file independently, and only removes each dependency |
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dnl subdir when it finds out that it no longer holds any |
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dnl dependency tracking file. |
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dnl |
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dnl When configure option --disable-dependency-tracking |
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dnl is used no amending takes place given that there are |
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dnl no dependency tracking files. |
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AC_DEFUN([XC_AMEND_DISTCLEAN], |
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[dnl |
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AC_PREREQ([2.50])dnl |
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dnl |
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m4_ifdef([_AC_OUTPUT_MAIN_LOOP], |
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[m4_provide_if([_AC_OUTPUT_MAIN_LOOP], [], |
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[m4_fatal([call to AC_OUTPUT needed before $0])])])dnl |
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dnl |
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m4_if([$#], [1], [], [m4_fatal([$0: wrong number of arguments])])dnl |
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m4_if([$1], [], [m4_fatal([$0: missing argument])])dnl |
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dnl |
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AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl |
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dnl |
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m4_ifdef([_AM_PROG_CC_C_O], |
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[ |
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_XC_AMEND_DISTCLEAN_BODY([$1]) |
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])dnl |
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m4_define([$0], [])[]dnl |
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]) |
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