# 'f95' is the old name for the 'fortran' language. We issue a warning
# and make the substitution.
case ,${enable_languages}, in
- *,f95,*)
+ *,f95,* | *,^f95,*)
echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
;;
esac
+ # Extract the language disable requests. N.B. some non-GNU sed, e.g. on SunOS,
+ # will ignore a line without a trailing newline.
+ disable_languages=`echo "$enable_languages" | tr , "$as_nl" | grep '^\^' | (tr "$as_nl" , ; echo) | sed -e 's/\^//g' -e 's/,$//'`
+ new_enable_languages=
+ for lang in `echo "$enable_languages" | tr , ' '`; do
+ case "${lang}:,${disable_languages}," in
+ ^default:* | ^all:*)
+ as_fn_error $? "only specific individual languages may be disabled, not \"$lang\"" "$LINENO" 5
+ ;;
+ ^lto:*)
+ as_fn_error $? "LTO should be disabled with the \"--disable-lto\" argument, not via \"--enable-languages=^lto\"" "$LINENO" 5
+ ;;
+ ^c:*)
+ as_fn_error $? "language \"c\" cannot be disabled" "$LINENO" 5
+ ;;
+ ^* | ${lang}:*,${lang},*) ;;
+ *) new_enable_languages="${new_enable_languages}${lang}," ;;
+ esac
+ done
+ enable_languages=`echo "$new_enable_languages" | sed -e 's/,$//'`
+
# If bootstrapping, C++ must be enabled.
- case ",$enable_languages,:$enable_bootstrap" in
- *,c++,*:*) ;;
- *:yes)
+ case ",${enable_languages},:${enable_bootstrap}:,${disable_languages}," in
+ *:yes:*,c++,*)
+ as_fn_error $? "c++ cannot be disabled for a bootstrap build" "$LINENO" 5
+ ;;
+ *,c++,*:*:*) ;;
+ *:yes:*)
if test -f ${srcdir}/gcc/cp/config-lang.in; then
enable_languages="${enable_languages},c++"
else
;;
esac
- # First scan to see if an enabled language requires some other language.
- # We assume that a given config-lang.in will list all the language
- # front ends it requires, even if some are required indirectly.
+ # Collect the list of default languages; keep it prefixed and suffixed with
+ # commas for later convenience.
+ default_languages=,
for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
case ${lang_frag} in
..) ;;
# an apparent bug in bash 1.12 on linux.
${srcdir}/gcc/[*]/config-lang.in) ;;
*)
- # From the config-lang.in, get $language, $lang_requires, and
- # $lang_requires_boot_languages.
+ # From the config-lang.in, get $language and $build_by_default.
language=
- lang_requires=
- lang_requires_boot_languages=
- # set srcdir during sourcing lang_frag to the gcc dir.
- # Sadly overriding srcdir on the . line doesn't work in plain sh as it
- # pollutes this shell
+ build_by_default=yes
+ # See note below about saving srcdir.
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
srcdir=${saved_srcdir}
- for other in ${lang_requires} ${lang_requires_boot_languages}; do
- case ,${enable_languages}, in
- *,$other,*) ;;
- *,default,*) ;;
- *,all,*) ;;
- *,$language,*)
- echo " \`$other' language required by \`$language'; enabling" 1>&2
- enable_languages="${enable_languages},${other}"
+ if test x"$build_by_default" = xyes; then
+ default_languages="${default_languages}${language},"
+ fi
+ ;;
+ esac
+ done
+
+ # First scan to see if an enabled language requires some other language.
+ # We assume that a given config-lang.in will list all the language
+ # front ends it requires, even if some are required indirectly.
+ delayed_error_languages=,
+ for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
+ case ${lang_frag} in
+ ..) ;;
+ # The odd quoting in the next line works around
+ # an apparent bug in bash 1.12 on linux.
+ ${srcdir}/gcc/[*]/config-lang.in) ;;
+ *)
+ # From the config-lang.in, get $language, $lang_requires, and
+ # $lang_requires_boot_languages.
+ language=
+ lang_requires=
+ lang_requires_boot_languages=
+ # set srcdir during sourcing lang_frag to the gcc dir.
+ # Sadly overriding srcdir on the . line doesn't work in plain sh as it
+ # pollutes this shell
+ saved_srcdir=${srcdir}
+ srcdir=${srcdir}/gcc . ${lang_frag}
+ srcdir=${saved_srcdir}
+
+ # Determine if this language was requested; if not, don't bring in its
+ # dependencies. To match historical behavior, do bring in the dependencies
+ # for unsupported languages that were not explicitly disabled.
+ case ,${disable_languages}, in
+ *,${language},*) continue ;;
+ esac
+ case ,${enable_languages}, in
+ *,${language},* | *,all,*) ;;
+ *,default,*)
+ case ${default_languages} in
+ *,${language},*) ;;
+ *) continue ;;
+ esac
+ ;;
+ *) continue ;;
+ esac
+
+ # This language was indeed requested; make sure all dependencies are
+ # also enabled.
+ for other in ${lang_requires} ${lang_requires_boot_languages}; do
+ need_to_add=0
+ case ,${enable_languages},:,${disable_languages}, in
+ *:*,${other},*)
+ # This language cannot be built because one of its dependencies
+ # was explicitly disabled. Don't complain just yet, though; other
+ # checks later may decide the language won't be built anyway.
+ delayed_error_languages="${delayed_error_languages}${language}:${other},"
+ ;;
+ *,${other},*:* | *,all,*:*) ;;
+ *,default,*:*)
+ case ${default_languages} in
+ *,${other},*) ;;
+ *) need_to_add=1 ;;
+ esac
;;
+ *) need_to_add=1 ;;
esac
- done
+ if test $need_to_add = 1; then
+ echo " \`$other' language required by \`$language'; enabling" 1>&2
+ enable_languages="${enable_languages},${other}"
+ fi
+ done
for other in ${lang_requires_boot_languages} ; do
if test "$other" != "c"; then
case ,${enable_stage1_languages}, in
*,default,*) ;;
*,all,*) ;;
*)
- case ,${enable_languages}, in
- *,$language,*)
- echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
- enable_stage1_languages="$enable_stage1_languages,${other}"
- ;;
- esac
+ echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
+ enable_stage1_languages="$enable_stage1_languages,${other}"
;;
esac
- fi
- done
- ;;
+ fi
+ done
+ ;;
esac
done
${srcdir}/gcc/[*]/config-lang.in) ;;
*)
# From the config-lang.in, get $language, $target_libs,
- # $lang_dirs, $boot_language, and $build_by_default
+ # $lang_dirs, and $boot_language.
language=
target_libs=
lang_dirs=
subdir_requires=
boot_language=no
- build_by_default=yes
# set srcdir during sourcing. See above about save & restore
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
add_this_lang=no
# C is always enabled, so no need to add it again
- if test "$language" != "c"; then
- case ,${enable_languages}, in
- *,${language},*)
- # Language was explicitly selected; include it
- add_this_lang=yes
- ;;
- *,all,*)
- # All languages are enabled
- add_this_lang=all
- ;;
- *,default,*)
- # 'default' was selected, select it if it is a default language
- add_this_lang=${build_by_default}
- ;;
- esac
+ if test "$language" != "c"; then
+ # Determine if this language was requested.
+ case ,${disable_languages}, in
+ *,${language},* ) ;;
+ *)
+ case ,${enable_languages}, in
+ *,${language},*)
+ # Language was explicitly selected; include it
+ add_this_lang=yes
+ ;;
+ *,all,*)
+ # All languages are enabled, and this one not excluded.
+ add_this_lang=all
+ ;;
+ *,default,*)
+ # 'default' was selected, select it if it is a default language
+ case ${default_languages} in
+ *,${language},*) add_this_lang=yes ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
fi
# Disable languages that need other directories if these aren't available.
# Silently disable.
add_this_lang=unsupported
;;
- esac
+ esac
;;
esac
potential_languages="${potential_languages}${language},"
;;
all|yes)
+ case "$delayed_error_languages" in
+ *,${language}:*,*)
+ as_fn_error $? "invalid configuration for language \"${language}\"; at least one of the dependencies \"$delayed_error_languages\" was explicitly disabled" "$LINENO" 5
+ ;;
+ esac
new_enable_languages="${new_enable_languages}${language},"
potential_languages="${potential_languages}${language},"
missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
# 'f95' is the old name for the 'fortran' language. We issue a warning
# and make the substitution.
case ,${enable_languages}, in
- *,f95,*)
+ *,f95,* | *,^f95,*)
echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
;;
esac
+ # Extract the language disable requests. N.B. some non-GNU sed, e.g. on SunOS,
+ # will ignore a line without a trailing newline.
+ disable_languages=`echo "$enable_languages" | tr , "$as_nl" | grep '^\^' | (tr "$as_nl" , ; echo) | sed -e 's/\^//g' -e 's/,$//'`
+ new_enable_languages=
+ for lang in `echo "$enable_languages" | tr , ' '`; do
+ case "${lang}:,${disable_languages}," in
+ ^default:* | ^all:*)
+ AC_MSG_ERROR([only specific individual languages may be disabled, not "$lang"])
+ ;;
+ ^lto:*)
+ AC_MSG_ERROR([LTO should be disabled with the "--disable-lto" argument, not via "--enable-languages=^lto"])
+ ;;
+ ^c:*)
+ AC_MSG_ERROR([language "c" cannot be disabled])
+ ;;
+ ^* | ${lang}:*,${lang},*) ;;
+ *) new_enable_languages="${new_enable_languages}${lang}," ;;
+ esac
+ done
+ enable_languages=`echo "$new_enable_languages" | sed -e 's/,$//'`
+
# If bootstrapping, C++ must be enabled.
- case ",$enable_languages,:$enable_bootstrap" in
- *,c++,*:*) ;;
- *:yes)
+ case ",${enable_languages},:${enable_bootstrap}:,${disable_languages}," in
+ *:yes:*,c++,*)
+ AC_MSG_ERROR([c++ cannot be disabled for a bootstrap build])
+ ;;
+ *,c++,*:*:*) ;;
+ *:yes:*)
if test -f ${srcdir}/gcc/cp/config-lang.in; then
enable_languages="${enable_languages},c++"
else
;;
esac
- # First scan to see if an enabled language requires some other language.
- # We assume that a given config-lang.in will list all the language
- # front ends it requires, even if some are required indirectly.
+ # Collect the list of default languages; keep it prefixed and suffixed with
+ # commas for later convenience.
+ default_languages=,
for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
case ${lang_frag} in
..) ;;
# an apparent bug in bash 1.12 on linux.
${srcdir}/gcc/[[*]]/config-lang.in) ;;
*)
- # From the config-lang.in, get $language, $lang_requires, and
- # $lang_requires_boot_languages.
+ # From the config-lang.in, get $language and $build_by_default.
language=
- lang_requires=
- lang_requires_boot_languages=
- # set srcdir during sourcing lang_frag to the gcc dir.
- # Sadly overriding srcdir on the . line doesn't work in plain sh as it
- # pollutes this shell
+ build_by_default=yes
+ # See note below about saving srcdir.
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
srcdir=${saved_srcdir}
- for other in ${lang_requires} ${lang_requires_boot_languages}; do
- case ,${enable_languages}, in
- *,$other,*) ;;
- *,default,*) ;;
- *,all,*) ;;
- *,$language,*)
- echo " \`$other' language required by \`$language'; enabling" 1>&2
- enable_languages="${enable_languages},${other}"
+ if test x"$build_by_default" = xyes; then
+ default_languages="${default_languages}${language},"
+ fi
+ ;;
+ esac
+ done
+
+ # First scan to see if an enabled language requires some other language.
+ # We assume that a given config-lang.in will list all the language
+ # front ends it requires, even if some are required indirectly.
+ delayed_error_languages=,
+ for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
+ case ${lang_frag} in
+ ..) ;;
+ # The odd quoting in the next line works around
+ # an apparent bug in bash 1.12 on linux.
+ ${srcdir}/gcc/[[*]]/config-lang.in) ;;
+ *)
+ # From the config-lang.in, get $language, $lang_requires, and
+ # $lang_requires_boot_languages.
+ language=
+ lang_requires=
+ lang_requires_boot_languages=
+ # set srcdir during sourcing lang_frag to the gcc dir.
+ # Sadly overriding srcdir on the . line doesn't work in plain sh as it
+ # pollutes this shell
+ saved_srcdir=${srcdir}
+ srcdir=${srcdir}/gcc . ${lang_frag}
+ srcdir=${saved_srcdir}
+
+ # Determine if this language was requested; if not, don't bring in its
+ # dependencies. To match historical behavior, do bring in the dependencies
+ # for unsupported languages that were not explicitly disabled.
+ case ,${disable_languages}, in
+ *,${language},*) continue ;;
+ esac
+ case ,${enable_languages}, in
+ *,${language},* | *,all,*) ;;
+ *,default,*)
+ case ${default_languages} in
+ *,${language},*) ;;
+ *) continue ;;
+ esac
+ ;;
+ *) continue ;;
+ esac
+
+ # This language was indeed requested; make sure all dependencies are
+ # also enabled.
+ for other in ${lang_requires} ${lang_requires_boot_languages}; do
+ need_to_add=0
+ case ,${enable_languages},:,${disable_languages}, in
+ *:*,${other},*)
+ # This language cannot be built because one of its dependencies
+ # was explicitly disabled. Don't complain just yet, though; other
+ # checks later may decide the language won't be built anyway.
+ delayed_error_languages="${delayed_error_languages}${language}:${other},"
+ ;;
+ *,${other},*:* | *,all,*:*) ;;
+ *,default,*:*)
+ case ${default_languages} in
+ *,${other},*) ;;
+ *) need_to_add=1 ;;
+ esac
;;
+ *) need_to_add=1 ;;
esac
- done
+ if test $need_to_add = 1; then
+ echo " \`$other' language required by \`$language'; enabling" 1>&2
+ enable_languages="${enable_languages},${other}"
+ fi
+ done
for other in ${lang_requires_boot_languages} ; do
if test "$other" != "c"; then
case ,${enable_stage1_languages}, in
*,default,*) ;;
*,all,*) ;;
*)
- case ,${enable_languages}, in
- *,$language,*)
- echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
- enable_stage1_languages="$enable_stage1_languages,${other}"
- ;;
- esac
+ echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
+ enable_stage1_languages="$enable_stage1_languages,${other}"
;;
esac
- fi
- done
- ;;
+ fi
+ done
+ ;;
esac
done
${srcdir}/gcc/[[*]]/config-lang.in) ;;
*)
# From the config-lang.in, get $language, $target_libs,
- # $lang_dirs, $boot_language, and $build_by_default
+ # $lang_dirs, and $boot_language.
language=
target_libs=
lang_dirs=
subdir_requires=
boot_language=no
- build_by_default=yes
# set srcdir during sourcing. See above about save & restore
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
add_this_lang=no
# C is always enabled, so no need to add it again
- if test "$language" != "c"; then
- case ,${enable_languages}, in
- *,${language},*)
- # Language was explicitly selected; include it
- add_this_lang=yes
- ;;
- *,all,*)
- # All languages are enabled
- add_this_lang=all
- ;;
- *,default,*)
- # 'default' was selected, select it if it is a default language
- add_this_lang=${build_by_default}
- ;;
- esac
+ if test "$language" != "c"; then
+ # Determine if this language was requested.
+ case ,${disable_languages}, in
+ *,${language},* ) ;;
+ *)
+ case ,${enable_languages}, in
+ *,${language},*)
+ # Language was explicitly selected; include it
+ add_this_lang=yes
+ ;;
+ *,all,*)
+ # All languages are enabled, and this one not excluded.
+ add_this_lang=all
+ ;;
+ *,default,*)
+ # 'default' was selected, select it if it is a default language
+ case ${default_languages} in
+ *,${language},*) add_this_lang=yes ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
fi
# Disable languages that need other directories if these aren't available.
# Silently disable.
add_this_lang=unsupported
;;
- esac
+ esac
;;
esac
potential_languages="${potential_languages}${language},"
;;
all|yes)
+ case "$delayed_error_languages" in
+ *,${language}:*,*)
+ AC_MSG_ERROR([invalid configuration for language "${language}"; at least one of the dependencies "$delayed_error_languages" was explicitly disabled])
+ ;;
+ esac
new_enable_languages="${new_enable_languages}${language},"
potential_languages="${potential_languages}${language},"
missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
Default is the traditional behavior @option{--with-aix-soname=@samp{aix}}.
-@item --enable-languages=@var{lang1},@var{lang2},@dots{}
+@item --enable-languages=[^]@var{lang1},[^]@var{lang2},@dots{}
Specify that only a particular subset of compilers and
their runtime libraries should be built. For a list of valid values for
@var{langN} you can issue the following command in the
default language, but is built by default because @option{--enable-lto} is
enabled by default. The other languages are default languages. If
@code{all} is specified, then all available languages are built. An
-exception is @code{jit} language, which requires
+exception is the @code{jit} language, which requires
@option{--enable-host-shared} to be included with @code{all}.
+If a language name is prefixed with a caret, such as
+@samp{--enable-languages=all,^obj-c++}, then that language will
+not be built. This is most useful when combined with @code{all} or
+@code{default}. A language disabled in this way will be disabled even
+if it is also included without the leading caret earlier or later in
+the argument to @option{--enable-languages}. An attempt to disable a
+language that is a prerequisite for an enabled languaged---(whether
+the latter language was enabled explicitly, or implicitly via the
+@code{default} or @code{all} directives)---is invalid.
+
@item --enable-stage1-languages=@var{lang1},@var{lang2},@dots{}
Specify that a particular subset of compilers and their runtime
libraries should be built with the system C compiler during stage 1 of
projects / thirdparty / gcc.git / commitdiff
