forked from Mirrors/freeswitch
95 lines
3.7 KiB
Plaintext
95 lines
3.7 KiB
Plaintext
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AC_DEFUN([AX_PREFIX_CONFIG_H],[dnl
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AC_BEFORE([AC_CONFIG_HEADERS],[$0])dnl
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AC_CONFIG_COMMANDS([ifelse($1,,$PACKAGE-config.h,$1)],[dnl
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AS_VAR_PUSHDEF([_OUT],[ac_prefix_conf_OUT])dnl
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AS_VAR_PUSHDEF([_DEF],[ac_prefix_conf_DEF])dnl
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AS_VAR_PUSHDEF([_PKG],[ac_prefix_conf_PKG])dnl
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AS_VAR_PUSHDEF([_LOW],[ac_prefix_conf_LOW])dnl
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AS_VAR_PUSHDEF([_UPP],[ac_prefix_conf_UPP])dnl
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AS_VAR_PUSHDEF([_INP],[ac_prefix_conf_INP])dnl
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m4_pushdef([_script],[conftest.prefix])dnl
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m4_pushdef([_symbol],[m4_cr_Letters[]m4_cr_digits[]_])dnl
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_OUT=`echo ifelse($1, , $PACKAGE-config.h, $1)`
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_DEF=`echo _$_OUT | sed -e "y:m4_cr_letters:m4_cr_LETTERS[]:" -e "s/@<:@^m4_cr_Letters@:>@/_/g"`
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_PKG=`echo ifelse($2, , $PACKAGE, $2)`
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_LOW=`echo _$_PKG | sed -e "y:m4_cr_LETTERS-:m4_cr_letters[]_:"`
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_UPP=`echo $_PKG | sed -e "y:m4_cr_letters-:m4_cr_LETTERS[]_:" -e "/^@<:@m4_cr_digits@:>@/s/^/_/"`
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_INP=`echo "ifelse($3,,,$3)" | sed -e 's/ *//'`
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if test ".$_INP" = "."; then
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for ac_file in : $CONFIG_HEADERS; do test "_$ac_file" = _: && continue
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case "$ac_file" in
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*.h) _INP=$ac_file ;;
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*)
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esac
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test ".$_INP" != "." && break
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done
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fi
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if test ".$_INP" = "."; then
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case "$_OUT" in
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*/*) _INP=`basename "$_OUT"`
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;;
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*-*) _INP=`echo "$_OUT" | sed -e "s/@<:@_symbol@:>@*-//"`
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;;
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*) _INP=config.h
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;;
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esac
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fi
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if test -z "$_PKG" ; then
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AC_MSG_ERROR([no prefix for _PREFIX_PKG_CONFIG_H])
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else
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if test ! -f "$_INP" ; then if test -f "$srcdir/$_INP" ; then
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_INP="$srcdir/$_INP"
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fi fi
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AC_MSG_NOTICE(creating $_OUT - prefix $_UPP for $_INP defines)
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if test -f $_INP ; then
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echo "s/^@%:@undef *\\(@<:@m4_cr_LETTERS[]_@:>@\\)/@%:@undef $_UPP""_\\1/" > _script
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echo "s/^@%:@undef *\\(@<:@m4_cr_letters@:>@\\)/@%:@undef $_LOW""_\\1/" >> _script
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echo "s/^@%:@def[]ine *\\(@<:@m4_cr_LETTERS[]_@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_UPP""_\\1 \\" >> _script
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echo "@%:@def[]ine $_UPP""_\\1 \\2 \\" >> _script
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echo "@%:@endif/" >>_script
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echo "s/^@%:@def[]ine *\\(@<:@m4_cr_letters@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_LOW""_\\1 \\" >> _script
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echo "@%:@define $_LOW""_\\1 \\2 \\" >> _script
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echo "@%:@endif/" >> _script
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# now executing _script on _DEF input to create _OUT output file
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echo "@%:@ifndef $_DEF" >$tmp/pconfig.h
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echo "@%:@def[]ine $_DEF 1" >>$tmp/pconfig.h
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echo ' ' >>$tmp/pconfig.h
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echo /'*' $_OUT. Generated automatically at end of configure. '*'/ >>$tmp/pconfig.h
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sed -f _script $_INP >>$tmp/pconfig.h
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echo ' ' >>$tmp/pconfig.h
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echo '/* once:' $_DEF '*/' >>$tmp/pconfig.h
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echo "@%:@endif" >>$tmp/pconfig.h
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if cmp -s $_OUT $tmp/pconfig.h 2>/dev/null; then
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AC_MSG_NOTICE([$_OUT is unchanged])
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else
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ac_dir=`AS_DIRNAME(["$_OUT"])`
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AS_MKDIR_P(["$ac_dir"])
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rm -f "$_OUT"
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mv $tmp/pconfig.h "$_OUT"
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fi
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cp _script _configs.sed
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else
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AC_MSG_ERROR([input file $_INP does not exist - skip generating $_OUT])
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fi
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rm -f conftest.*
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fi
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m4_popdef([_symbol])dnl
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m4_popdef([_script])dnl
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AS_VAR_POPDEF([_INP])dnl
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AS_VAR_POPDEF([_UPP])dnl
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AS_VAR_POPDEF([_LOW])dnl
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AS_VAR_POPDEF([_PKG])dnl
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AS_VAR_POPDEF([_DEF])dnl
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AS_VAR_POPDEF([_OUT])dnl
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],[PACKAGE="$PACKAGE"])])
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dnl implementation note: a bug report (31.5.2005) from Marten Svantesson points
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dnl out a problem where `echo "\1"` results in a Control-A. The unix standard
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dnl http://www.opengroup.org/onlinepubs/000095399/utilities/echo.html
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dnl defines all backslash-sequences to be inherently non-portable asking
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dnl for replacement mit printf. Some old systems had problems with that
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dnl one either. However, the latest libtool (!) release does export an $ECHO
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dnl (and $echo) that does the right thing - just one question is left: what
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dnl was the first version to have it? Is it greater 2.58 ?
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