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Unify core passes

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With libc_headers step before pass-1, there is no need to distinguish
pass-1 and pass-2; they are configured identically (note that with the
current configuration, core pass-2 is only used for win32 - hence, uses
build_libgcc=yes and mode=static).

Signed-off-by: Alexey Neyman <stilor@att.net>
This commit is contained in:
Alexey Neyman 2022-02-08 17:25:12 -08:00
parent 93be629f2b
commit 5a0be8b4ec
12 changed files with 26 additions and 86 deletions
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2
TODO
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@ -75,7 +75,7 @@ A (slightly) ordered set of tasks for crosstool-NG. Written in a cryptic languag
[ ] add passthrough to configure, for host/target
[ ] Read/spellcheck configs & scripts
[ ] 'ct-ng olddefconfig'
[ ] Install a "trap" C++ compiler as ${CT_TARGET}-g++ during pass-1/pass-2 to trap attempts to compile target code with g++ (currently glibc detects host g++ and warns that it uses g++ w/o target triplet)
[ ] Install a "trap" C++ compiler as ${CT_TARGET}-g++ during core compiler build to trap attempts to compile target code with g++ (currently glibc detects host g++ and warns that it uses g++ w/o target triplet)
[ ] Somehow it needs to be functional during the configure step - export env var while running in CT_DoExecLog with CFG level, and forward it to host compiler?
[ ] elf2flt not compatible with multiple linkers enabled in binutils (ld.bfd + ld.gold) - fix upstream?
[ ] Companion libs

5
config/cc.in
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@ -2,10 +2,7 @@
menu "C compiler"
config CC_CORE_PASS_1_NEEDED
bool
config CC_CORE_PASS_2_NEEDED
config CC_CORE_NEEDED
bool
config CC_SUPPORT_CXX

2
config/cc/gcc.in
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@ -55,7 +55,7 @@ config CC_GCC_ENABLE_CXX_FLAGS
config CC_GCC_CORE_EXTRA_CONFIG_ARRAY
string "Core gcc extra config"
default ""
depends on CC_CORE_PASS_1_NEEDED || CC_CORE_PASS_2_NEEDED
depends on CC_CORE_NEEDED
help
Extra flags to pass onto ./configure when configuring the core gcc.

2
config/libc/glibc.in
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@ -3,7 +3,7 @@
## depends on ! WINDOWS && ! BARE_METAL && ARCH_USE_MMU
## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASS_1_NEEDED
## select CC_CORE_NEEDED
# TBD: select GETTEXT for build only, not for host
## select GETTEXT_NEEDED
## select BINUTILS_FORCE_LD_BFD_DEFAULT

2
config/libc/mingw-w64.in
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@ -4,7 +4,7 @@
##
## select LIBC_SUPPORT_THREADS_NATIVE
## select LIBC_SUPPORT_THREADS_POSIX
## select CC_CORE_PASS_2_NEEDED
## select CC_CORE_NEEDED
## select BINUTILS_FORCE_LD_BFD_DEFAULT
##
## help The de-facto standard for Mingw distributions.

2
config/libc/moxiebox.in
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@ -10,7 +10,7 @@
## select LIBC_SUPPORT_THREADS_NONE
## select COMP_TOOLS_AUTOCONF if !CONFIGURE_has_autoconf_2_65_or_newer || !CONFIGURE_has_autoreconf_2_64_or_newer
## select COMP_TOOLS_AUTOMAKE if !CONFIGURE_has_automake_1_15_or_newer
## select CC_CORE_PASS_1_NEEDED
## select CC_CORE_NEEDED
## select LIBELF_NEEDED
##
## help Secure execution runtime for Moxie architecture.

2
config/libc/musl.in
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@ -3,7 +3,7 @@
## depends on ! WINDOWS && ! BARE_METAL
## depends on EXPERIMENTAL
## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASS_1_NEEDED
## select CC_CORE_NEEDED
## help Musl is a new standard library to power a new generation of Linux-based
## help devices. musl is lightweight, fast, simple, free, and strives to be

2
config/libc/newlib.in
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@ -3,7 +3,7 @@
## depends on BARE_METAL
## select LIBC_PROVIDES_CXA_ATEXIT
## select LIBC_SUPPORT_THREADS_NONE
## select CC_CORE_PASS_1_NEEDED
## select CC_CORE_NEEDED
## help Newlib is a C library intended for use on embedded systems. It is a
## help conglomeration of several library parts, all under free software

2
config/libc/uClibc-ng.in
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@ -5,7 +5,7 @@
## select LIBC_SUPPORT_THREADS_LT
## select LIBC_SUPPORT_THREADS_NONE
## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASS_1_NEEDED
## select CC_CORE_NEEDED
##
## help The de-facto standard for embeded linux systems.
## help

4
ct-ng.in
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@ -268,7 +268,6 @@ build.%:
# but are actual steps for canadian and cross-native.
# Please keep the last line with a '\' and keep the following empty line:
# it helps when diffing and merging.
# TBD move kernel headers and unify pass_1/pass_2?
CT_STEPS := \
companion_tools_for_build \
companion_libs_for_build \
@ -277,9 +276,8 @@ CT_STEPS := \
companion_libs_for_host \
binutils_for_host \
libc_headers \
cc_core_pass_1 \
kernel_headers \
cc_core_pass_2 \
cc_core \
libc_main \
cc_for_build \
cc_for_host \

85
scripts/build/cc/gcc.sh
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@ -134,7 +134,7 @@ evaluate_multilib_cflags()
# 1. On MIPS target, gcc (or rather, ld, which it invokes under the hood) chokes
# if supplied with two -mabi=* options. I.e., 'gcc -mabi=n32' and 'gcc -mabi=32' both
# work, but 'gcc -mabi=32 -mabi=n32' produces an internal error in ld. Thus we do
# not supply target's CFLAGS in multilib builds - and after compiling pass-1 gcc,
# not supply target's CFLAGS in multilib builds - and after compiling core gcc,
# attempt to determine which CFLAGS need to be filtered out.
#
# 2. If "demultilibing" is in effect, create top-level directories for any
@ -186,11 +186,10 @@ cc_gcc_multilib_housekeeping() {
}
#------------------------------------------------------------------------------
# Core gcc pass 1
do_cc_core_pass_1() {
do_cc_core() {
local -a core_opts
if [ "${CT_CC_CORE_PASS_1_NEEDED}" != "y" ]; then
if [ "${CT_CC_CORE_NEEDED}" != "y" ]; then
return 0
fi
@ -201,62 +200,12 @@ do_cc_core_pass_1() {
core_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" )
core_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" )
core_opts+=( "lang_list=c" )
core_opts+=( "build_step=core1" )
core_opts+=( "build_step=core" )
core_opts+=( "mode=static" )
core_opts+=( "build_libgcc=yes" )
CT_DoStep INFO "Installing pass-1 core C gcc compiler"
CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-core-pass-1"
do_gcc_core_backend "${core_opts[@]}"
CT_Popd
CT_EndStep
}
# Core gcc pass 2
do_cc_core_pass_2() {
local -a core_opts
if [ "${CT_CC_CORE_PASS_2_NEEDED}" != "y" ]; then
return 0
fi
# Common options:
core_opts+=( "host=${CT_BUILD}" )
core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
core_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" )
core_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" )
core_opts+=( "lang_list=c" )
core_opts+=( "build_step=core2" )
# Different conditions are at stake here:
# - In case the threading model is NPTL, we need a shared-capable core
# gcc; in all other cases, we need a static-only core gcc.
# - In case the threading model is NPTL or win32, or gcc is 4.3 or
# later, we need to build libgcc
case "${CT_THREADS}" in
nptl)
if [ "${CT_SHARED_LIBS}" = "y" ]; then
core_opts+=( "mode=shared" )
else
core_opts+=( "mode=static" )
fi
core_opts+=( "build_libgcc=yes" )
;;
win32)
core_opts+=( "mode=static" )
core_opts+=( "build_libgcc=yes" )
;;
*)
core_opts+=( "mode=static" )
core_opts+=( "build_libgcc=yes" )
;;
esac
CT_DoStep INFO "Installing pass-2 core C gcc compiler"
CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-core-pass-2"
CT_DoStep INFO "Installing core C gcc compiler"
CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-core"
do_gcc_core_backend "${core_opts[@]}"
@ -281,9 +230,8 @@ do_cc_core_pass_2() {
# build_manuals : whether to build manuals or not : bool : no
# cflags : cflags to use : string : (empty)
# ldflags : ldflags to use : string : (empty)
# build_step : build step 'core1', 'core2', 'gcc_build',
# 'libstdcxx'
# or 'gcc_host' : string : (none)
# build_step : build step 'core', 'gcc_build',
# 'libstdcxx' or 'gcc_host' : string : (none)
# Usage: do_gcc_core_backend mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
do_gcc_core_backend() {
local mode
@ -321,7 +269,7 @@ do_gcc_core_backend() {
# This function gets called in case of a bare metal compiler for the final gcc, too.
case "${build_step}" in
core1|core2)
core)
CT_DoLog EXTRA "Configuring core C gcc compiler"
log_txt="gcc"
extra_config+=( "${CT_CC_CORE_SYSROOT_ARG[@]}" )
@ -351,7 +299,7 @@ do_gcc_core_backend() {
build_libgcc=no
;;
*)
CT_Abort "Internal Error: 'build_step' must be one of: 'core1', 'core2', 'gcc_build', 'gcc_host' or 'libstdcxx', not '${build_step:-(empty)}'"
CT_Abort "Internal Error: 'build_step' must be one of: 'core', 'gcc_build', 'gcc_host' or 'libstdcxx', not '${build_step:-(empty)}'"
;;
esac
@ -501,8 +449,6 @@ do_gcc_core_backend() {
if [ "${CT_LIBC_GLIBC}" = "y" ]; then
# Report GLIBC's version to GCC, it affects the defaults on other options.
# Pass-2 should be able to get it from the headers, but for some options
# (such as --with-long-double-128) we need to get it right even in pass-1.
# GCC expects just two numbers separated by a dot.
local glibc_version
@ -571,11 +517,10 @@ do_gcc_core_backend() {
# Some versions of gcc have a defective --enable-multilib.
# Since that's the default, only pass --disable-multilib. For multilib,
# also enable multiarch. Without explicit --enable-multiarch, pass-1
# compiler is configured as multilib/no-multiarch and pass-2/final
# are multilib/multiarch (because gcc autodetects multiarch based on
# multiple instances of crt*.o in the install directory - which do
# not exist in pass-1).
# also enable multiarch. Without explicit --enable-multiarch, core
# compiler is configured as multilib/no-multiarch (because gcc autodetects
# multiarch based on multiple instances of crt*.o in the install directory
# which do not exist in the core pass).
if [ "${CT_MULTILIB}" != "y" ]; then
extra_config+=("--disable-multilib")
else
@ -609,7 +554,7 @@ do_gcc_core_backend() {
fi
# For non-sysrooted toolchain, GCC doesn't search except at the installation
# prefix; in core-1/2 stage we use a temporary installation prefix - but
# prefix; in core stage we use a temporary installation prefix - but
# we may have installed something into the final prefix. This is less than ideal:
# in the installation prefix GCC also handles subdirectories for multilibs
# (e.g. first trying ${prefix}/include/${arch-triplet}) but

2
scripts/build/libc/uClibc-ng.sh
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@ -34,7 +34,7 @@ uClibc_ng_backend_once()
# Construct make arguments:
# - uClibc uses the CROSS environment variable as a prefix to the compiler
# tools to use. Since it requires core pass-1, thusly named compiler is
# tools to use. Since it requires core compiler, thusly named compiler is
# already available.
# - Note about CFLAGS: In uClibc, CFLAGS are generated by Rules.mak,
# depending on the configuration of the library. That is, they are tailored