Skip to content

R
riscv-gcc-1
Commit cc11cc9b by Paolo Bonzini Committed by Paolo Bonzini
Options

re PR bootstrap/25670 (build fail with 'make all-gcc') 

2006-02-20  Paolo Bonzini  <bonzini@gnu.org>

	PR bootstrap/25670

	* Makefile.tpl ([+compare-target+]): Print explanation messages.

	* Makefile.def (ADAFLAGS, BOOT_ADAFLAGS, LANGUAGES): New flags_to_pass.
	* Makefile.tpl (BASE_FLAGS_TO_PASS): Support optional flags_to_pass.
	(EXTRA_GCC_FLAGS): Remove ADAFLAGS, BOOT_ADAFLAGS, LANGUAGES,
	BUILD_PREFIX, BUILD_PREFIX_1.
	* configure.in: (BUILD_PREFIX, BUILD_PREFIX_1): Don't substitute.

	* Makefile.def (bootstrap stage 1): Pass LIBCFLAGS too.
	* Makefile.tpl (POSTSTAGE1_FLAGS_TO_PASS): Override LIBCFLAGS too.

	* Makefile.tpl (configure-stage[+id+]-[+prefix+][+module+],
	all-stage[+id+]-[+prefix+][+module+], : Use $(current_stage) instead
	of `cat stage_current`.  Always provide the `r' and `s' variables.
	(clean-stage[+id+]-[+prefix+][+module+]): Likewise, and make it into
	a single shell execution.
	(configure-[+prefix+][+module+], all-[+prefix+][+module+]): For
	bootstrapped modules, make the stage1 module if the build was not
	started yet, else build the current stage.
	(all-host, all-target): Omit bootstrapped modules (if bootstrapping).
	(all-build, all-host, all-target, [+make_target+]-host,
	[+make_target+]-target): Do not use \-continued lines.
	(target modules): Depend on stage_last, not all-gcc, if bootstrapping.
	(current_stage, restrap, stage_last): New.

	* Makefile.in: Regenerate.
	* configure: Regenerate.

gcc:
2006-02-20  Paolo Bonzini  <bonzini@gnu.org>

	PR bootstrap/25476

	* Makefile.in (LDFLAGS): Define from autoconf substitution.

	* Makefile.in (BOOTSTRAPPING): New.
	(quickstrap): New definition if BOOTSTRAPPING=yes.

	* Makefile.in (CONFIG_LANGUAGES): Substitute all_selected_languages.
	* configure.ac: Substitute all_selected_languages with the languages
	that were configured.  For all the other variables except
	lang_specs_files, include all the languages in the tree.
	* configure: Regenerate.
	
	* Makefile.in (stmp-fixinc): Copy includes from the prev-gcc directory,
	if there is one.  Run the commands to run fixincludes in the same
	subshell.

	* doc/makefile.texi: Document new makefile targets from toplevel bootstrap.
	* doc/install.texi: Document exact conventions for searching target tools.
	Document --with-build-time-tools.  Document toplevel bootstrap.  Document
	something more about building an Ada cross-compiler.  Don't list GNU Make
	requirements which affect all platforms.

From-SVN: r111295
parent 6a34c788
Showing with 338 additions and 186 deletions
ChangeLog
2006-02-20 Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/25670
* Makefile.tpl ([+compare-target+]): Print explanation messages.
* Makefile.def (ADAFLAGS, BOOT_ADAFLAGS, LANGUAGES): New flags_to_pass.
* Makefile.tpl (BASE_FLAGS_TO_PASS): Support optional flags_to_pass.
(EXTRA_GCC_FLAGS): Remove ADAFLAGS, BOOT_ADAFLAGS, LANGUAGES,
BUILD_PREFIX, BUILD_PREFIX_1.
* configure.in: (BUILD_PREFIX, BUILD_PREFIX_1): Don't substitute.
* Makefile.def (bootstrap stage 1): Pass LIBCFLAGS too.
* Makefile.tpl (POSTSTAGE1_FLAGS_TO_PASS): Override LIBCFLAGS too.
* Makefile.tpl (configure-stage[+id+]-[+prefix+][+module+],
all-stage[+id+]-[+prefix+][+module+], : Use $(current_stage) instead
of `cat stage_current`. Always provide the `r' and `s' variables.
(clean-stage[+id+]-[+prefix+][+module+]): Likewise, and make it into
a single shell execution.
(configure-[+prefix+][+module+], all-[+prefix+][+module+]): For
bootstrapped modules, make the stage1 module if the build was not
started yet, else build the current stage.
(all-host, all-target): Omit bootstrapped modules (if bootstrapping).
(all-build, all-host, all-target, [+make_target+]-host,
[+make_target+]-target): Do not use \-continued lines.
(target modules): Depend on stage_last, not all-gcc, if bootstrapping.
(current_stage, restrap, stage_last): New.
* Makefile.in: Regenerate.
* configure: Regenerate.
2006-02-19 Bud Davis <jmdavis@link.com>
* MAINTAINERS (Write After Approval): Remove myself.
......
Makefile.def
......@@ -207,7 +207,9 @@ flags_to_pass = { flag= SHELL ; };
flags_to_pass = { flag= YACC ; };
// Host tools
flags_to_pass = { flag= ADAFLAGS ; optional=true ; };
flags_to_pass = { flag= AR_FLAGS ; };
flags_to_pass = { flag= BOOT_ADAFLAGS ; optional=true ; };
flags_to_pass = { flag= BOOT_CFLAGS ; };
flags_to_pass = { flag= BOOT_LDFLAGS ; };
flags_to_pass = { flag= CFLAGS ; };
......@@ -241,6 +243,7 @@ flags_to_pass = { flag= STRIP_FOR_TARGET ; };
flags_to_pass = { flag= WINDRES_FOR_TARGET ; };
// Miscellaneous
flags_to_pass = { flag= LANGUAGES ; optional=true ; };
flags_to_pass = { flag= LEAN ; };
// Inter-module dependencies
......@@ -461,7 +464,7 @@ bootstrap_stage = {
id=1 ;
stage_configure_flags='--disable-intermodule \
--disable-coverage --enable-languages="$(STAGE1_LANGUAGES)"' ;
stage_make_flags='CFLAGS="$(STAGE1_CFLAGS)"' ; };
stage_make_flags='CFLAGS="$(STAGE1_CFLAGS)" LIBCFLAGS="$(STAGE1_CFLAGS)"' ; };
bootstrap_stage = {
id=2 ; prev=1 ;
bootstrap_target=bootstrap2 ;
......
Makefile.in
This source diff could not be displayed because it is too large. You can view the blob instead.
configure.in
......@@ -1060,8 +1060,6 @@ if test "${build}" != "${host}" ; then
CXX=${CXX-${host_alias}-c++}
CXXFLAGS=${CXXFLAGS-"-g -O2"}
CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
BUILD_PREFIX=${build_alias}-
BUILD_PREFIX_1=${build_alias}-
else
# Set reasonable default values for some tools even if not Canadian.
......@@ -1073,9 +1071,6 @@ else
# This is all going to change when we autoconfiscate...
CC_FOR_BUILD="\$(CC)"
BUILD_PREFIX=
BUILD_PREFIX_1=loser-
AC_PROG_CC
# We must set the default linker to the linker used by gcc for the correct
......@@ -2160,8 +2155,6 @@ AC_SUBST_FILE(ospace_frag)
# Miscellanea: directories, flags, etc.
AC_SUBST(RPATH_ENVVAR)
AC_SUBST(BUILD_PREFIX)
AC_SUBST(BUILD_PREFIX_1)
AC_SUBST(tooldir)
AC_SUBST(build_tooldir)
AC_SUBST(CONFIGURE_GDB_TK)
......
gcc/ChangeLog
2006-02-20 Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/25476
* Makefile.in (LDFLAGS): Define from autoconf substitution.
* Makefile.in (BOOTSTRAPPING): New.
(quickstrap): New definition if BOOTSTRAPPING=yes.
* Makefile.in (CONFIG_LANGUAGES): Substitute all_selected_languages.
* configure.ac: Substitute all_selected_languages with the languages
that were configured. For all the other variables except
lang_specs_files, include all the languages in the tree.
* configure: Regenerate.
* Makefile.in (stmp-fixinc): Copy includes from the prev-gcc directory,
if there is one. Run the commands to run fixincludes in the same
subshell.
* doc/makefile.texi: Document new makefile targets from toplevel bootstrap.
* doc/install.texi: Document exact conventions for searching target tools.
Document --with-build-time-tools. Document toplevel bootstrap. Document
something more about building an Ada cross-compiler. Don't list GNU Make
requirements which affect all platforms.
2006-02-19 Roger Sayle <roger@eyesopen.com>
PR middle-end/19543
......
gcc/Makefile.in
......@@ -130,7 +130,7 @@ T_ADAFLAGS =
SUBDIRS =@subdirs@ build
# Selection of languages to be made.
CONFIG_LANGUAGES = @all_languages@
CONFIG_LANGUAGES = @all_selected_languages@
LANGUAGES = c gcov$(exeext) gcov-dump$(exeext) $(CONFIG_LANGUAGES)
# Selection of languages to be made during stage1 build.
......@@ -150,6 +150,7 @@ BOOT_LANGUAGES = c @all_boot_languages@
XCFLAGS =
TCFLAGS =
CFLAGS = -g
LDFLAGS = @LDFLAGS@
STAGE1_CFLAGS = -g @stage1_cflags@
STAGE1_CHECKING = -DENABLE_CHECKING -DENABLE_ASSERT_CHECKING
BOOT_CFLAGS = -g -O2
......@@ -3193,17 +3194,23 @@ stmp-fixinc: gsyslimits.h macro_list \
fi
rm -rf include; mkdir include
-chmod a+rx include
(TARGET_MACHINE='$(target)'; srcdir=`cd $(srcdir); ${PWD_COMMAND}`; \
SHELL='$(SHELL)'; MACRO_LIST=`${PWD_COMMAND}`/macro_list ; \
export TARGET_MACHINE srcdir SHELL MACRO_LIST && \
cd $(build_objdir)/fixincludes && \
$(SHELL) ./fixinc.sh ../../gcc/include \
$(SYSTEM_HEADER_DIR) $(OTHER_FIXINCLUDES_DIRS) )
rm -f include/syslimits.h
if [ -f include/limits.h ]; then \
mv include/limits.h include/syslimits.h; \
if [ -d ../prev-gcc ]; then \
cd ../prev-gcc && \
$(MAKE) $(INSTALL_HEADERS_DIR) DESTDIR=`pwd`/../gcc/ \
libsubdir=. ; \
else \
cp $(srcdir)/gsyslimits.h include/syslimits.h; \
(TARGET_MACHINE='$(target)'; srcdir=`cd $(srcdir); ${PWD_COMMAND}`; \
SHELL='$(SHELL)'; MACRO_LIST=`${PWD_COMMAND}`/macro_list ; \
export TARGET_MACHINE srcdir SHELL MACRO_LIST && \
cd $(build_objdir)/fixincludes && \
$(SHELL) ./fixinc.sh ../../gcc/include \
$(SYSTEM_HEADER_DIR) $(OTHER_FIXINCLUDES_DIRS) ); \
rm -f include/syslimits.h; \
if [ -f include/limits.h ]; then \
mv include/limits.h include/syslimits.h; \
else \
cp $(srcdir)/gsyslimits.h include/syslimits.h; \
fi; \
fi
chmod a+r include/syslimits.h
$(STAMP) stmp-fixinc
......@@ -4239,12 +4246,19 @@ bubblestrap:
$(MAKE) $(REMAKEFLAGS) stage4_build || exit 1; \
fi
BOOTSTRAPPING := $(shell if test -f ../stage_last; then echo yes; else echo no; fi)
ifeq ($(BOOTSTRAPPING),yes)
# Provide quickstrap as a target that people can type into the gcc directory,
# and that fails if you're not into it.
quickstrap: all
else
quickstrap:
if test -f stage_last ; then \
LAST=`cat stage_last`; rm $$LAST; $(MAKE) $(REMAKEFLAGS) $$LAST; \
else \
$(MAKE) $(REMAKEFLAGS) stage1_build; \
fi
endif
cleanstrap:
-$(MAKE) clean
......
gcc/configure.ac
......@@ -817,30 +817,6 @@ AC_ARG_ENABLE(languages,
esac],
[enable_languages=c])
subdirs=
for lang in ${srcdir}/*/config-lang.in
do
case $lang in
# The odd quoting in the next line works around
# an apparent bug in bash 1.12 on linux.
changequote(,)dnl
${srcdir}/[*]/config-lang.in) ;;
*)
lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
if test "x$lang_alias" = x
then
echo "$lang doesn't set \$language." 1>&2
exit 1
fi
case ",$enable_languages," in
*,$lang_alias,*)
subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
esac
;;
changequote([,])dnl
esac
done
# -------------------------
# Checks for other programs
......@@ -3258,22 +3234,10 @@ AC_SUBST(MAINT)dnl
# Make empty files to contain the specs and options for each language.
# Then add #include lines to for a compiler that has specs and/or options.
subdirs=
lang_opt_files=
lang_specs_files=
lang_tree_files=
for subdir in . $subdirs
do
if test -f $srcdir/$subdir/lang.opt; then
lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
fi
if test -f $srcdir/$subdir/lang-specs.h; then
lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
fi
if test -f $srcdir/$subdir/$subdir-tree.def; then
lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
fi
done
# These (without "all_") are set in each config-lang.in.
# `language' must be a single word so is spelled singularly.
all_languages=
......@@ -3291,6 +3255,10 @@ all_gtfiles="$target_gtfiles"
all_gtfiles_files_langs=
all_gtfiles_files_files=
# These are the languages that are set in --enable-languages,
# and are available in the GCC tree.
all_selected_languages=
# Add the language fragments.
# Languages are added via two mechanisms. Some information must be
# recorded in makefile variables, these are defined in config-lang.in.
......@@ -3300,59 +3268,93 @@ all_gtfiles_files_files=
language_hooks="Make-hooks"
for s in $subdirs
for lang in ${srcdir}/*/config-lang.in
do
language=
boot_language=
compilers=
stagestuff=
outputs=
gtfiles=
. ${srcdir}/$s/config-lang.in
if test "x$language" = x
then
echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
exit 1
fi
all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
if test -f ${srcdir}/$s/Makefile.in
then all_lang_makefiles="$s/Makefile"
fi
all_languages="$all_languages $language"
if test "x$boot_language" = xyes
then
all_boot_languages="$all_boot_languages $language"
fi
all_compilers="$all_compilers $compilers"
all_stagestuff="$all_stagestuff $stagestuff"
all_outputs="$all_outputs $outputs"
all_gtfiles="$all_gtfiles $gtfiles"
for f in $gtfiles
do
all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
done
case $lang in
# The odd quoting in the next line works around
# an apparent bug in bash 1.12 on linux.
changequote(,)dnl
${srcdir}/[*]/config-lang.in)
continue ;;
*)
lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
if test "x$lang_alias" = x
then
echo "$lang doesn't set \$language." 1>&2
exit 1
fi
subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
subdirs="$subdirs $subdir"
case ",$enable_languages," in
*,$lang_alias,*)
all_selected_languages="$all_selected_languages $lang_alias"
if test -f $srcdir/$subdir/lang-specs.h; then
lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
fi
;;
esac
changequote([,])dnl
if test -f $srcdir/$subdir/lang.opt; then
lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
fi
if test -f $srcdir/$subdir/$subdir-tree.def; then
lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
fi
language=
boot_language=
compilers=
stagestuff=
outputs=
gtfiles=
. ${srcdir}/$subdir/config-lang.in
if test "x$language" = x
then
echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
exit 1
fi
all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
if test -f ${srcdir}/$subdir/Makefile.in
then all_lang_makefiles="$subdir/Makefile"
fi
all_languages="$all_languages $language"
if test "x$boot_language" = xyes
then
all_boot_languages="$all_boot_languages $language"
fi
all_compilers="$all_compilers $compilers"
all_stagestuff="$all_stagestuff $stagestuff"
all_outputs="$all_outputs $outputs"
all_gtfiles="$all_gtfiles $gtfiles"
for f in $gtfiles
do
all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
done
;;
esac
done
# Pick up gtfiles for c
gtfiles=
s="c"
subdir="c"
. ${srcdir}/c-config-lang.in
all_gtfiles="$all_gtfiles $gtfiles"
for f in $gtfiles
do
all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
done
check_languages=
for language in $all_languages
for language in $all_selected_languages
do
check_languages="$check_languages check-$language"
check_languages="$check_languages check-$language"
done
# We link each language in with a set of hooks, reached indirectly via
# lang.${target}.
# lang.${target}. Only do so for selected languages.
rm -f Make-hooks
touch Make-hooks
......@@ -3361,12 +3363,13 @@ target_list="all.cross start.encap rest.encap tags \
uninstall info man srcextra srcman srcinfo \
mostlyclean clean distclean maintainer-clean \
stage1 stage2 stage3 stage4 stageprofile stagefeedback"
for t in $target_list
do
x=
for lang in $all_languages
for lang in $all_selected_languages
do
x="$x $lang.$t"
x="$x $lang.$t"
done
echo "lang.$t: $x" >> Make-hooks
done
......@@ -3463,6 +3466,7 @@ AC_SUBST(all_gtfiles_files_files)
AC_SUBST(all_lang_makefrags)
AC_SUBST(all_lang_makefiles)
AC_SUBST(all_languages)
AC_SUBST(all_selected_languages)
AC_SUBST(all_stagestuff)
AC_SUBST(build_exeext)
AC_SUBST(build_install_headers_dir)
......
gcc/doc/makefile.texi
......@@ -7,6 +7,8 @@
@cindex makefile targets
@cindex targets, makefile
These targets are available from the @samp{gcc} directory:
@table @code
@item all
This is the default target. Depending on what your build/host/target
......@@ -72,49 +74,59 @@ make check-gcc RUNTESTFLAGS="execute.exp=19980413-*"
Note that running the testsuite may require additional tools be
installed, such as TCL or dejagnu.
@end table
@item bootstrap
Builds GCC three times---once with the native compiler, once with the
native-built compiler it just built, and once with the compiler it built
the second time. In theory, the last two should produce the same
results, which @samp{make compare} can check. Each step of this process
is called a ``stage'', and the results of each stage @var{N}
(@var{N} = 1@dots{}3) are copied to a subdirectory @file{stage@var{N}/}.
The toplevel tree from which you start GCC compilation is not
the GCC directory, but rather a complex Makefile that coordinates
the various steps of the build, including bootstrapping the compiler
and using the new compiler to build target libraries.
When GCC is configured for a native configuration, the default action
for @command{make} is to do a full three-stage bootstrap. This means
that GCC is built three times---once with the native compiler, once with
the native-built compiler it just built, and once with the compiler it
built the second time. In theory, the last two should produce the same
results, which @samp{make compare} can check. Each stage is configured
separately and compiled into a separate directory, to minimize problems
due to ABI incompatibilities between the native compiler and GCC.
If you do a change, rebuilding will also start from the first stage
and ``bubble'' up the change through the three stages. Each stage
is taken from its build directory (if it had been built previously),
rebuilt, and copied to its subdirectory. This will allow you to, for
example, continue a bootstrap after fixing a bug which causes the
stage2 build to crash. It does not provide as good coverage of the
compiler as bootstrapping from scratch, but it ensures that the new
code is syntactically correct (e.g. that you did not use GCC extensions
by mistake), and avoids spurious bootstrap comparison
failures@footnote{Except if the compiler was buggy and miscompiled
some of the files that were not modified. In this case, it's best
to use @command{make restrap}.}.
Other targets available from the top level include:
@table @code
@item bootstrap-lean
Like @code{bootstrap}, except that the various stages are removed once
they're no longer needed. This saves disk space.
@item bubblestrap
This incrementally rebuilds each of the three stages, one at a time.
It does this by ``bubbling'' the stages up from their subdirectories
(if they had been built previously), rebuilding them, and copying them
back to their subdirectories. This will allow you to, for example,
continue a bootstrap after fixing a bug which causes the stage2 build
to crash.
@item bootstrap2
@itemx bootstrap2-lean
Performs only the first two stages of bootstrap. Unlike a three-stage
bootstrap, this does not perform a comparison to test that the compiler
is running properly. Note that the disk space required by a ``lean''
bootstrap is approximately independent of the number of stages.
@item quickstrap
Rebuilds the most recently built stage. Since each stage requires
special invocation, using this target means you don't have to keep
track of which stage you're on or what invocation that stage needs.
@item stage@var{N}-bubble (@var{N} = 1@dots{}4)
Rebuild all the stages up to @var{N}, with the appropriate flags,
``bubbling'' the changes as described above.
@item cleanstrap
Removed everything (@samp{make clean}) and rebuilds (@samp{make bootstrap}).
@item all-stage@var{N} (@var{N} = 1@dots{}4)
Assuming that stage @var{N} has already been built, rebuild it with the
appropriate flags. This is rarely needed.
@item restrap
Like @code{cleanstrap}, except that the process starts from the first
stage build, not from scratch.
@item stage@var{N} (@var{N} = 1@dots{}4)
For each stage, moves the appropriate files to the @file{stage@var{N}}
subdirectory.
@item unstage@var{N} (@var{N} = 1@dots{}4)
Undoes the corresponding @code{stage@var{N}}.
@item restage@var{N} (@var{N} = 1@dots{}4)
Undoes the corresponding @code{stage@var{N}} and rebuilds it with the
appropriate flags.
@item cleanstrap
Remove everything (@samp{make clean}) and rebuilds (@samp{make bootstrap}).
@item compare
Compares the results of stages 2 and 3. This ensures that the compiler
......@@ -125,7 +137,53 @@ regardless of how it itself was compiled.
Builds a compiler with profiling feedback information. For more
information, see
@ref{Building,,Building with profile feedback,gccinstall,Installing GCC}.
This is actually a target in the top-level directory, which then
recurses into the @file{gcc} subdirectory multiple times.
@item restrap
Restart a bootstrap, so that everything that was not built with
the system compiler is rebuilt.
@item stage@var{N}-start (@var{N} = 1@dots{}4)
For each package that is bootstrapped, rename directories so that,
for example, @file{gcc} points to the stage@var{N} GCC, compiled
with the stage@var{N-1} GCC@footnote{Customarily, the system compiler
is also termed the @file{stage0} GCC.}.
You will invoke this target if you need to test or debug the
stage@var{N} GCC. If you only need to execute GCC (but you need
not run @samp{make} either to rebuild it or to run test suites),
you should be able to work directly in the @file{stage@var{N}-gcc}
directory. This makes it easier to debug multiple stages in
parallel.
@item stage
For each package that is bootstrapped, relocate its build directory
to indicate its stage. For example, if the @file{gcc} directory
points to the stage2 GCC, after invoking this target it will be
renamed to @file{stage2-gcc}.
@end table
If you wish to use non-default GCC flags when compiling the stage2 and
stage3 compilers, set @code{BOOT_CFLAGS} on the command line when doing
@samp{make}.
Usually, the first stage only builds the languages that the compiler
is written in: typically, C and maybe Ada. If you are debugging a
miscompilation of a different stage2 front-end (for example, of the
Fortran front-end), you may want to have front-ends for other languages
in the first stage as well. To do so, set @code{STAGE1_LANGUAGES}
on the command line when doing @samp{make}.
For example, in the aforementioned scenario of debugging a Fortran
front-end miscompilation caused by the stage1 compiler, you may need a
command like
@example
make stage2-bubble STAGE1_LANGUAGES=c,fortran
@end example
Alternatively, you can use per-language targets to build and test
languages that are not enabled by default in stage1. For example,
@command{make f951} will build a Fortran compiler even in the stage1
build directory.
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment