if test x"$have_gmp" = xyes; then
saved_LIBS="$LIBS"
LIBS="$LIBS $gmplibs"
+ dnl MPFR 2.2.0 is acceptable but buggy, MPFR 2.2.1 is better.
AC_MSG_CHECKING([for correct version of mpfr.h])
AC_TRY_LINK([#include <gmp.h>
#include <mpfr.h>],[
-#if MPFR_VERSION_MAJOR < 2 || (MPFR_VERSION_MAJOR == 2 && MPFR_VERSION_MINOR < 2)
+#if MPFR_VERSION < MPFR_VERSION_NUM(2,2,0)
choke me
#endif
mpfr_t n; mpfr_init(n);
-], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
+], [AC_TRY_LINK([#include <gmp.h>
+#include <mpfr.h>],[
+#if MPFR_VERSION < MPFR_VERSION_NUM(2,2,1)
+ choke me
+#endif
+ mpfr_t n; mpfr_init(n);
+], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
+ [AC_MSG_RESULT([no]); have_gmp=no])
LIBS="$saved_LIBS"
fi
CFLAGS="$saved_CFLAGS"
AC_SUBST(gmpinc)
# By default, C is the only stage 1 language.
-stage1_languages=c
-AC_SUBST(stage1_languages)
+stage1_languages=,c,
# Figure out what language subdirectories are present.
# Look if the user specified --enable-languages="..."; if not, use
esac
done
- new_enable_languages=c
+ new_enable_languages=,c,
missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
- potential_languages=c
+ potential_languages=,c,
for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
case ${lang_frag} in
target_libs=
lang_dirs=
subdir_requires=
- boot_language=
- build_by_default=
+ boot_language=no
+ build_by_default=yes
. ${lang_frag}
- potential_languages="${potential_languages},${language}"
- # This is quite sensitive to the ordering of the case statement arms.
- case ,${enable_languages},:${language}:${have_gnat}:${build_by_default} in
- *::*:*)
- echo "${lang_frag} doesn't set \$language." 1>&2
- exit 1
- ;;
- *:ada:no:*)
- # Ada was requested with no preexisting GNAT. Disable unconditionally.
- add_this_lang=no
- ;;
- *,${language},*:*:*:*)
+ if test x${language} = x; then
+ echo "${lang_frag} doesn't set \$language." 1>&2
+ exit 1
+ fi
+
+ case ,${enable_languages}, in
+ *,${language},*)
# Language was explicitly selected; include it.
add_this_lang=yes
;;
- *,all,*:*:*:no)
- # 'all' was selected, but this is not a default language
- # so do not include it.
- add_this_lang=no
- ;;
- *,all,*:*:*:*)
- # 'all' was selected and this is a default language; include it.
- add_this_lang=yes
+ *,all,*)
+ # 'all' was selected, select it if it is a default language
+ add_this_lang=${build_by_default}
;;
*)
add_this_lang=no
;;
*)
# Silently disable.
- add_this_lang=no
+ add_this_lang=unsupported
;;
esac
done
+ # Disable Ada if no preexisting GNAT is available.
+ case ,${enable_languages},:${language}:${have_gnat} in
+ *,${language},*:ada:no)
+ # Specifically requested language; tell them.
+ AC_MSG_ERROR([GNAT is required to build $language])
+ ;;
+ *:ada:no)
+ # Silently disable.
+ add_this_lang=unsupported
+ ;;
+ esac
+
# Disable a language that is unsupported by the target.
case " $unsupported_languages " in
*" $language "*)
- add_this_lang=no
+ add_this_lang=unsupported
;;
esac
case $add_this_lang in
- no)
+ unsupported)
# Remove language-dependent dirs.
eval noconfigdirs='"$noconfigdirs "'\"$target_libs $lang_dirs\"
;;
- *)
- new_enable_languages="$new_enable_languages,$language"
+ no)
+ # Remove language-dependent dirs; still show language as supported.
+ eval noconfigdirs='"$noconfigdirs "'\"$target_libs $lang_dirs\"
+ potential_languages="${potential_languages}${language},"
+ ;;
+ yes)
+ new_enable_languages="${new_enable_languages}${language},"
+ potential_languages="${potential_languages}${language},"
missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
case ${boot_language} in
yes)
# Add to (comma-separated) list of stage 1 languages.
- stage1_languages="${stage1_languages},${language}"
+ stage1_languages="${stage1_languages}${language},"
;;
esac
;;
esac
done
+ AC_ARG_ENABLE(stage1-languages,
+[ --enable-stage1-languages[=all] choose additional languages to build during
+ stage1. Mostly useful for compiler development.],
+ [case ,${enable_stage1_languages}, in
+ ,no,|,,)
+ # Set it to something that will have no effect in the loop below
+ enable_stage1_languages=c ;;
+ ,yes,)
+ enable_stage1_languages=`echo $new_enable_languages | \
+ sed -e "s/^,//" -e "s/,$//" ` ;;
+ *,all,*)
+ enable_stage1_languages=`echo ,$enable_stage1_languages, | \
+ sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
+ esac
+
+ # Add "good" languages from enable_stage1_languages to stage1_languages,
+ # while "bad" languages go in missing_languages. Leave no duplicates.
+ for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
+ case $potential_languages in
+ *,$i,*)
+ case $stage1_languages in
+ *,$i,*) ;;
+ *) stage1_languages="$stage1_languages$i," ;;
+ esac ;;
+ *)
+ case $missing_languages in
+ *,$i,*) ;;
+ *) missing_languages="$missing_languages$i," ;;
+ esac ;;
+ esac
+ done])
+
+ # Remove leading/trailing commas that were added for simplicity
+ potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
+ stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
+ new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
+
if test "x$missing_languages" != x; then
AC_MSG_ERROR([
The following requested languages could not be built: ${missing_languages}
-Recognised languages are: ${potential_languages}])
+Supported languages are: ${potential_languages}])
fi
-
if test "x$new_enable_languages" != "x$enable_languages"; then
echo The following languages will be built: ${new_enable_languages}
+ enable_languages="$new_enable_languages"
fi
- enable_languages="$new_enable_languages"
+
+ AC_SUBST(stage1_languages)
ac_configure_args=`echo " $ac_configure_args" | sed -e 's/ --enable-languages=[[^ ]]*//' -e 's/$/ --enable-languages='"$enable_languages"/ `
fi
done
for module in ${configdirs} ; do
if test -z "${no_recursion}"; then
- for file in stage*-${module}/Makefile ${module}/Makefile; do
+ for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
if test -f ${file}; then
echo 1>&2 "*** removing ${file} to force reconfigure"
rm -f ${file}
yes) stage1_cflags="-g -Wa,-J" ;;
*) stage1_cflags="-g -J" ;;
esac ;;
- powerpc-*-darwin*)
- # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
- # sources; use -no-cpp-precomp to get to GNU cpp.
- # Apple's GCC has bugs in designated initializer handling, so disable
- # that too.
- stage1_cflags="-g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
- ;;
esac
# This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
AC_SUBST(stage1_cflags)
+# Enable --enable-checking in stage1 of the compiler.
+AC_ARG_ENABLE(stage1-checking,
+[ --enable-stage1-checking[=all] choose additional checking for stage1
+ of the compiler.],
+[stage1_checking=--enable-checking=${enable_stage1_checking}],
+[if test "x$enable_checking" = xno; then
+ stage1_checking=--enable-checking
+else
+ stage1_checking=--enable-checking${enable_checking+=}$enable_checking
+fi])
+AC_SUBST(stage1_checking)
+
# Enable -Werror in bootstrap stage2 and later.
# Change the default to "no" on release branches.
AC_ARG_ENABLE(werror,
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