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embedded-channel/embedded.scm
Stefan f14ae7ebed Update gcc to 14.2, fix multilibs. 
embedded.scm: Formatting.
(make-gcc-phase-pre-configure): Remove dynamic-linker argument.  Create
gcc/config.  Remove obsolete patch of gcc/configure.
(make-gcc-configure-flags): Add dynamic-linker argument.  Simplify --with-specs
options and overwrite the dynamic-linker.  Set --with-local-prefix to $#output
to ignore /usr/local/include.
(make-gcc): Update to GCC 14.2.  Remove creation of --with-local-prefix
directory.  Delete install-tools after install phase.
(make-gcc-cross-sans-libc-configure-flags): Add --disable-multiarch.  Set
--with-local-prefix to $#output to ignore /usr/local/include.
(make-cross-c-library): Set
--with-local-prefix to $#output to ignore /usr/local/include.  Change
--with-specs to work with multilibs.  Add --disable-multiarch.
2024-11-23 20:56:49 +01:00

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;;; GNU Guix --- Functional package management for GNU
;;;
;;; Copyright © 2023 Stefan <stefan-guix@vodafonemail.de>
;;;
;;; This file is not part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (embedded)
#:use-module (gnu packages)
#:use-module (gnu packages autotools)
#:use-module (gnu packages autotools)
#:use-module (gnu packages base)
#:use-module ((gnu packages bootstrap)
#:select (glibc-dynamic-linker))
#:use-module (gnu packages commencement)
#:use-module (gnu packages compression)
#:use-module (gnu packages dejagnu)
#:use-module (gnu packages elf)
#:use-module (gnu packages flex)
#:use-module (gnu packages gcc)
#:use-module (gnu packages gdb)
#:use-module (gnu packages multiprecision)
#:use-module (gnu packages perl)
#:use-module (gnu packages pkg-config)
#:use-module (gnu packages texinfo)
#:use-module (guix build gnu-build-system)
#:use-module ((guix build utils)
#:select (alist-replace modify-phases))
#:use-module (guix build-system)
#:use-module (guix build-system gnu)
#:use-module (guix build-system meson)
#:use-module (guix build-system trivial)
#:use-module (guix download)
#:use-module (guix gexp)
#:use-module (guix git-download)
#:use-module ((guix licenses)
#:prefix license:)
#:use-module (guix packages)
#:use-module (guix utils)
#:use-module (ice-9 optargs)
#:use-module ((ice-9 string-fun)
#:select (string-replace-substring))
#:use-module ((srfi srfi-1)
#:select (second)))
(define-public gcc-phase-fix-environment
"This is a build-phase for the GCC compilation to fix environment variables.
This is mostly necessary because Guix places standard headers into the
C_INCLUDE_PATH variable and others. Ideally this phase would not be needed."
#~(lambda* (#:key inputs #:allow-other-keys)
(use-modules (srfi srfi-1))
;; For cross-compilers the phase make-dynamic-linker-cache needs to find
;; the native ldconfig executable.
(setenv "PATH" (string-append (getenv "PATH") ":" #$glibc "/bin"))
(setenv
"LD_LIBRARY_PATH"
;; The built GCC will have a workaround to ensure that glibc will always
;; find libgcc_s.so. Unfortunately during the configuration of libatomic
;; and other libraries, the libgcc_s.so is not yet available in its final
;; installation directory and this workaround causes trouble to the
;; configure script during "checking whether we are cross compiling". As
;; a mitigation we set LD_LIBRARY_PATH to the location of the not yet
;; installed libgcc_s.so. This would not be necessary, if glibc had a
;; reference to the GCC which has beed used to build glibc itself.
(string-append (getcwd) "/build/gcc"))
(format #t
"environment variable `LD_LIBRARY_PATH' set to `~a'~%"
(getenv "LD_LIBRARY_PATH"))
(for-each
(lambda (include-path-env)
(when (getenv include-path-env)
(let* ((libc (assoc-ref inputs "libc"))
(gcc (assoc-ref inputs "gcc")) ; This is different to #$gcc!
(paths-to-delete
(map (lambda (package) (string-append package "/include"))
(filter-map identity (list libc gcc)))))
(setenv
include-path-env
;; The gcc package used by the gnu-build-system to build this GCC
;; puts the include paths to the C++ headers and to the libc
;; headers into CPLUS_INCLUDE_PATH and OBJCPLUS_INCLUDE_PATH.
;; This causes trouble in the GCC build process when -nostdinc++
;; is used. As a mitigation we remove them. This would not be
;; necessary, when using this built GCC instead.
;; Actually the same problem exists with C_INCLUDE_PATH and
;; OBJC_INCLUDE_PATH. Just by chance it makes no troubles.
(string-join
(remove (lambda (path) (member path paths-to-delete))
(string-split (getenv include-path-env) #\:))
":"))
(format #t
"environment variable `~a' set to `~a'~%"
include-path-env
(getenv include-path-env)))))
'("C_INCLUDE_PATH" "CPLUS_INCLUDE_PATH"
"OBJC_INCLUDE_PATH" "OBJCPLUS_INCLUDE_PATH"))))
(define*-public (make-gcc-phase-pre-configure
#:key
(libc glibc)
(startfile-dir "lib"))
"Make a build-phase for the GCC compilation to modify the source-code. Use
the LIBC package for embedded search-paths. The path DYNAMIC-LINKER is appended
to LIBC to form the absolute path to the dynamic-linker. The STARTFILE-DIR is a
suffix for LIBC to form the path to startfiles like crt1.o from glibc or crt0.o
from newlib. All default values match for glibc. For newlib set STARTFILE-DIR
to (string-append target \"/lib\"). If LIBC is #f, then $output:lib is
siffixed with STARTFILE-DIR."
;; In case libc is #f, we still need a valid path for substitutions.
(let* ((libc (or libc #~#$output:lib))
(startfile-dir (string-append "/" startfile-dir "/"))
(startfile-dir (string-replace-substring startfile-dir "//" "/")))
#~(lambda _
;; When building a cross-compiler the path #$output:lib/include given
;; via --includedir to configure is expected to already exist when
;; building the stmp-fixinc target. But #$output:lib is only created
;; later in the install phase. So we create the path here to prevent
;; the following error:
;; The directory (BUILD_SYSTEM_HEADER_DIR) that should contain system
;; headers does not exist:
;; /gnu/store/…-GCC-cross-…-lib/include
;; See also <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=59e4c98173a79fcaa2c33253261409f38856c384>.
(mkdir-p (string-append #$output:lib "/include"))
(substitute* "Makefile.in"
;; Don't store configure arguments, to avoid a cyclic reference in
;; #$output:lib/lib/gcc/…/include/configargs.h back to #$output and
;; retaining references to build-time dependencies like bash-minimal.
(("@TOPLEVEL_CONFIGURE_ARGUMENTS@") ""))
(substitute* (find-files "gcc/config")
;; Enforce any /lib64, /lib32, /libx32, /libo32 directory to just be
;; /lib. There is no other posibility than patching, even
;; --disable-multiarch does not help. Both Debian and LFS patch, too.
;; See <https://salsa.debian.org/toolchain-team/gcc/-/tree/988272d6dcf649c1d6018763d1ee4b4df191d607/debian/patches>.
(("/lib[xo]?(64|32)") "/lib"))
(substitute* "gcc/genmultilib"
;; Enforce proper invokations of sh.
(("#! */bin/sh") (string-append "#!" (which "sh"))))
(substitute* "gcc/gcc.cc"
;; The STARTFILE_PREFIX_SPEC defines where to find crt1.o and
;; other start files of libc. Replace it with a proper path to
;; the libc. Note: This path is relative to the sysroot which
;; therefore must be /.
(("startfile_prefix_spec = STARTFILE_PREFIX_SPEC;")
(string-append "startfile_prefix_spec = \""
#$libc #$startfile-dir "\";")))
(substitute* "libstdc++-v3/python/Makefile.in"
;; Change pythondir from #$output:out to #$output:lib to prevent
;; #$output:lib/lib/libstdc++.*-gdb.py to create a cyclic dependency
;; to #$output:out/share/…/python. This moves all python files to
;; #$output:lib. The configure option --with-python-dir stays usable.
(("pythondir = \\$\\(datadir\\)") "pythondir = $(libdir)/share")
(("pythondir = \\$\\(prefix\\)") "pythondir = $(libdir)"))
#;(substitute* "libsanitizer/asan/asan_linux.cpp"
;; Ensure PATH_MAX is defined by including the proper header file.
;; See <https://gcc.gnu.org/bugzilla//show_bug.cgi?id=99476> and
;; <https://gcc.gnu.org/bugzilla//show_bug.cgi?id=106998>.
;; The gcc package used by the gnu-build-system is to blame here.
;; This patch is necessary when using --disable-bootstrap.
(("#include <limits\\.h>")
#$(string-join (list "#include <limits.h>"
"#if SANITIZER_LINUX"
"#include <linux/limits.h>"
"#endif")
"\n"))))))
(define*-public (make-gcc-configure-flags
#:key
(libc glibc)
(dynamic-linker (glibc-dynamic-linker))
(binutils binutils)
(ld-wrapper ld-wrapper)
(kernel-headers
(car (assoc-ref (package-propagated-inputs glibc)
"kernel-headers")))
#:allow-other-keys)
"Make configure-flags for the GCC compilation referring to the LIBC and
KERNEL-HEADERS packages. The defaults refer to glibc and the kernel-headers
used to build glibc."
#~(list
;; Prevent the built gcc to build itself again to save time.
#;"--disable-bootstrap"
;; Prevent the generation of useless dependency files.
"--disable-dependency-tracking"
;; Save space by disabling pre-compiled libstdc++ headers.
"--disable-libstdcxx-pch"
;; Multiarch support is not a topic for Guix.
"--disable-multiarch"
;; As libc is limited, gcc will not be usable for 32 and 64 bit builds.
"--disable-multilib"
;; Disable all language frontends except for C, C++, Objective-C and
;; Objective-C++.
"--enable-languages=c,c++,objc,obj-c++"
;; Avoid parallel linking to not crash on systems with limited memory.
"--enable-link-serialization"
;; Prevent the C++ headers in #$output:lib, put them in #$output:out
;; instead. Use an unconventional path to prevent it from being added to
;; the environment variables C_INCLUDE_PATH, CPLUS_INCLUDE_PATH and
;; OBJC_INCLUDE_PATH, OBJCPLUS_INCLUDE_PATH.
;; TODO Will this work with clang?
"--with-gxx-include-dir=$(prefix)/include-c++"
;; The first set of include paths consists of #$output/include-c++/… and
;; #$output:lib/lib/…/include. Second is usually /usr/local/include, which
;; is documented to be avoided, if the same value is used for both --prefix
;; and --with-local-prefix.
(string-append "--with-local-prefix=" #$output)
;; Third set is #$output:lib/…/include-fixed, which expects #$libc/include
;; and #$kernel-headers/include to follow in this order.
;; Fourth and usually the last include path is /usr/include containing all
;; system headers. It is only possible to specify one path for this. Set
;; the #$libc/include path and prevent the use of /usr/include.
(string-append "--with-native-system-header-dir=" #$libc "/include")
;; The final include path has to be #$kernel-headers/include, which has to
;; be after #$libc/include. There is only -idirafter left to achieve this.
(string-append
"--with-specs="
;; Embed the path to the kernel-headers.
"-idirafter " #$kernel-headers "/include "
;; Embed the program search path to the #$ld-wrapper before the binutils.
"-B" #$ld-wrapper "/bin "
;; Embed the program search path to the #$binutils.
"-B" #$binutils "/bin "
;; Instead of using the -B options below for #$output:lib/lib, #$libc/lib
;; and #$libc:static/lib, -L could be used. The -L option has the
;; advantage to only add a library search path, which is enough here.
;; However, as these paths are important when using --enable-multilib
;; (which is nomally the default) and as the multilib mechanism relies on
;; the use of -B (which is not clearly documented), we stick to the -B
;; option despite its disadvantage to add to program and header search
;; paths as well.
;; Embed the link-time search path to libgcc_s.so, libstdc++.so, etc.
"-B" #$output:lib "/lib "
;; Embed the link-time search paths to #$libc/lib and #$libc:static/lib.
"-B" #$libc "/lib -B" #$libc:static "/lib "
;; Embed the dynamic-linker to use. Otherwise files in gcc/config need
;; to be patched. This is a much simpler solution.
"%x{--dynamic-linker=" #$libc #$dynamic-linker "} "
;; Embed the runtime search path to #$output:lib/lib and link libgcc_s.so,
;; unless statically linking or suppressing to link it with the
;; -nodefaultlibs or -nostdlib options, except -shared-libgcc has been
;; passed, although its documented for -nostdlib and -nodefaultlibs that
;; -shared-libgcc (and -static-libgcc) will be ignored and -lgcc_s (or -
;; lgcc) must be used. GCC itself uses -shared-libgcc, -nostdlib and
;; -lgcc_s to build libstdc++.so. Unfortunately it is impossible in specs
;; to check for -l options, as these are handled as compiler output files
;; instead. Therefore we check for -shared-libgcc as an exception to link
;; libstdc++.so with the needed -rpath option. We cannot rely on the
;; ld-wrapper, as the libgcc_s.so file is only installed later, when
;; libstdc++.so has been built. Linking libgcc_s.so whenever possible is
;; a workaround to ensure the pesence of a pre-loaded libgcc_s.so for GNU
;; libc. Otherwise the GNU libc may fail to load libgcc_s.so via dlopen()
;; during calls of e.g. pthread_exit() or pthread_cancel(). We do not
;; check for the option -static-libgcc, as the dlopen() call can happen
;; anyway. Actually the GNU libc needs a DT_RUNPATH entry to libgcc_s.so
;; of the GCC package used to build it. This is missing and may requires
;; a fix.
"%{static|nodefaultlibs|nostdlib:"
"%{shared-libgcc:%x{-rpath=" #$output:lib "/lib}}; "
":%x{-rpath=" #$output:lib "/lib} %x{-lgcc_s}}")
;; Use the zlib package instead of the bundled zlib.
"--with-system-zlib"))
(define-public (make-gcc phase-pre-configure configure-flags)
"Make a GCC package using the PHASE-PRE-CONFIGURE and the CONFIGURE-FLAGS in
the build-process."
(package
(name "GCC")
(version "14.2.0")
(source
(origin
(method url-fetch)
(uri (string-append "mirror://gnu/gcc/gcc-" version "/gcc-" version
".tar.xz"))
(sha256
(base32 "1j9wdznsp772q15w1kl5ip0gf0bh8wkanq2sdj12b7mzkk39pcx7"))
(patches (search-patches "gcc-12-strmov-store-file-names.patch"))))
(build-system gnu-build-system)
(outputs '("out" "lib" "debug"))
;; The packages zstd and elfutils are needed for LTO support.
(inputs (list elfutils gmp isl mpfr mpc zlib zstd))
;; To generate man pages and info documents, perl and texinfo are needed.
(native-inputs (list perl texinfo))
(arguments
(list
#:tests? #f
#:out-of-source? #t
#:configure-flags configure-flags
#:phases
#~(modify-phases %standard-phases
(add-after 'set-paths 'fix-environment
#$gcc-phase-fix-environment)
(add-before 'configure 'pre-configure
#$phase-pre-configure)
(add-after 'install 'remove-install-tools
(lambda _
;; The programs in install-tools try to modify the store and have
;; retaining references to sed and bash-minimal. They are useless
;; in Guix and can be deleted to reduce references.
(for-each (lambda (directory)
(delete-file-recursively
(car (find-files directory
"^install-tools$"
#:directories? #t))))
(list #$output #$output:lib)))))))
(native-search-paths
(list (search-path-specification
(variable "C_INCLUDE_PATH")
(files (list "include")))
(search-path-specification
(variable "CPLUS_INCLUDE_PATH")
(files (list "include")))
(search-path-specification
(variable "OBJC_INCLUDE_PATH")
(files (list "include")))
(search-path-specification
(variable "OBJCPLUS_INCLUDE_PATH")
(files (list "include")))
(search-path-specification
(variable "LIBRARY_PATH")
(files (list "lib")))))
(synopsis "GNU Compiler Collection")
(description
"The GNU Compiler Collection includes front ends for C, C++, Objective-C
(optionally Fortran, Ada, Go, D and Modula-2) as well as libraries for these
languages (libstdc++, …).")
(home-page "https://gcc.gnu.org/")
(license license:gpl3+)))
(define-public GCC
(make-gcc (make-gcc-phase-pre-configure) (make-gcc-configure-flags)))
(define-public guix-locpath
(package
(name "guix-locpath")
(version "1.0")
(source #f)
(build-system trivial-build-system)
(arguments (list #:builder #~(mkdir #$output)))
(native-search-paths
(list (search-path-specification
(variable "GUIX_LOCPATH")
(files '("lib/locale")))))
(home-page #f)
(synopsis "Access for glibc to locales")
(description
"The guix-locpath package sets the environment variable GUIX_LOCPATH to
make all locale related functions of glibc usable without propagating glibc
itself. This is usefull to prevent glibc include paths to be exposed via
C_INCLUDE_PATH and similar environment variables, to keep a defined include
order with embedded paths in GCC to glibc.")
(license (package-license glibc-utf8-locales))))
(define*-public (make-c-toolchain gcc binutils
#:optional ld-wrapper
#:key (propagated-inputs '()))
"Make a C-toolchain consisting of the packages GCC, BINUTILS, guix-locpath and
optionally LD-WRAPPER. The result can be used by the transformation function
'package-with-c-toolchain' and to build a GCC-toolchain package with
'make-gcc-toolchain-package'.
The guix-locpath package is used instead of the glibc package to prevent glibc
and the kernel-headers from appearing in the C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
and similar environment variables. The GCC package is expected to have the
necessary include paths built-in to preserve a necessary include-order.
The GCC package is expected to know the paths to LD-WRAPPER and BINUTILS and
therefore neither needs to be part of the created c-toolchain. However, some packages my invoke the assembler or linker directly, so these packages still
need to be accessible via the PATH environment variable.
The PROPAGATED_INPUTS argument is an alist of package-names and packages which
take percedence over the usual toolchain packages. This might be needed to
override tools from the toolchain."
(append propagated-inputs
(if ld-wrapper
;; The ld-wrapper has to be in front of binutils.
(list (list "ld-wrapper" ld-wrapper))
'())
(list (list "binutils" binutils)
(list "guix-locpath" guix-locpath)
(list "gcc" gcc))))
(define-public gcc-c-toolchain
(make-c-toolchain GCC binutils ld-wrapper))
(define-public (c-toolchain-input-package c-toolchain name)
"Get the input package named NAME from the C-TOOLCHAIN package list."
(car (assoc-ref c-toolchain name)))
(define-public (make-gcc-toolchain-package c-toolchain)
"Make a GCC-toolchain package from C-TOOLCHAIN. The C-TOOLCHAIN argument must
be a list of inputs (label/package tuples) providing equivalent functionality as
the 'gcc-toolchain' package as passed to 'package-with-c-toolchain'."
(let ((gcc (c-toolchain-input-package c-toolchain "gcc")))
(package
(name (string-append (package-name gcc) "-toolchain"))
(version (package-version gcc))
(source #f)
(build-system trivial-build-system)
(arguments
(list
#:modules '((guix build union))
#:builder
#~(begin
(use-modules ((guix build union)))
(union-build #$output (quote #$(map second c-toolchain))))))
(synopsis "Complete GCC toolchain for C/C++/Objective-C development")
(description
"This package provides a complete GCC toolchain for C/C++/Objective-C
development to be installed in user profiles. This includes GCC and Binutils.
GCC is the GNU Compiler Collection.")
(home-page "https://gcc.gnu.org/")
(license license:gpl3+))))
(define-public GCC-toolchain
(make-gcc-toolchain-package gcc-c-toolchain))
(define*-public (make-binutils #:optional target)
(package-with-c-toolchain
(package
(name (string-append "Binutils" (if target
(string-append "-" target)
"")))
(version "2.42")
(source
(origin
(method url-fetch)
(uri (string-append "mirror://gnu/binutils/binutils-" version
".tar.bz2"))
(sha256
(base32 "04mgvzgsdcksm7cm0qs8j4ljb562asqdkhjfrmr4q1m5pl78am5a"))
;; The binutils-mingw-w64-timestamp.patch can't be applied.
(patches (search-patches "binutils-mingw-w64-deterministic.patch"))))
(build-system gnu-build-system)
(arguments
(list
#:out-of-source? #t ; Recommended in binutils/README.
#:phases
#~(modify-phases %standard-phases
(add-after 'unpack 'fix-testsuite
(lambda _
;; The configure flag --enable-deterministic-archives makes the
;; tests "replacing non-deterministic member" and
;; "replacing SOURCE_DATE_EPOCH deterministic member" fail due to
;; unexpected output. To fix the relevant parts we need to
;; temporarily concatenate two lines to limit the substitution.
(substitute* "binutils/testsuite/binutils-all/ar.exp"
(("^( set got \\[binutils_run \\$AR \"ru \\$archive \\$older_objfile\"\\])\n"
_ first-line-without-newline)
first-line-without-newline))
;; Now do the actually needed substitutions.
(substitute* "binutils/testsuite/binutils-all/ar.exp"
;; Correct the output to be a warning instead of being empty.
(("^( set got \\[binutils_run \\$AR \"ru \\$archive \\$older_objfile\"\\]) .*$"
_ first-line-without-newline)
(string-append
first-line-without-newline
"\n if ![string match \"*`u' modifier ignored since `D' is the default*\" $got] {\n"))
;; With --enable-deterministic-archives ar takes the older
;; instead of the newer object file in the test
;; "replacing non-deterministic member".
(("^ # set older_length ")
" set older_length ")
(("(\\$\\{?)newer_length" _ dereference)
(string-append dereference "older_length")))
(substitute* "gold/testsuite/Makefile.in"
;; Embed the runtime search paths to #$zlib/lib and
;; #$zstd:lib/lib.
(("_unittest_LDFLAGS =")
(string-append
"_unittest_LDFLAGS ="
" -Wl,--rpath=" #$zlib "/lib"
" -Wl,--rpath=" #$zstd:lib "/lib"))))))
#:configure-flags
#~(quote
#$(cons*
;; Speed up the build.
"--disable-dependency-tracking"
;; Disable separate-code as the testsuite unveils Arm bugs in ld:
;; FAIL: R_ARM_THM_JUMP24 Relocation veneers: Short 1
;; FAIL: Cortex-A8 erratum fix, headers
;; FAIL: Cortex-A8 erratum fix, relocate bl.w to PLT
;; FAIL: Thumb only PLT and GOT
;; FAIL: Thumb only PLT and GOT LSB Symbol
;; TODO Use --enable-separat-code maybe with -rosegment with 2.43.
"--disable-separate-code"
;; Build a 64-bit bfd lib also on 32-bit hosts.
"--enable-64-bit-bfd"
;; Enable compressed debug sections with all supported formats.
"--enable-compressed-debug-sections=all"
;; Ensure that generated archives will be reproducable.
"--enable-deterministic-archives"
;; Build the faster gold linker.
"--enable-gold"
;; Build gprofng.
"--enable-gprofng"
;; Install the built libraries and headers.
"--enable-install-libbfd"
;; Enable the use of DT_RUNPATH by default for elf targets.
"--enable-new-dtags"
;; Enable support for plugins.
"--enable-plugins"
;; Build shared libraries.
"--enable-shared"
;; Enable multi-threaded linking in gold.
"--enable-threads"
;; Enforce an empty LIB_PATH, a colon is the documented method,
;; to avoid the usual default of /lib:/usr/lib:/usr/local/lib.
"--with-lib-path=:"
;; All paths to --with-… options are relative to the sysroot. As
;; store paths are absolute, the sysroot needs to be /. This is
;; also needed to make cross ld find absolute DT_RUNPATH entries
;; when searching for needed libraries, which are only searched
;; relative to the configured sysroot directory or not at all.
;; See <http://sourceware.org/ml/binutils/2013-05/msg00312.html>.
;; This is also documented in the ld manual for the -rpath option:
;; "Searching -rpath in this way is only supported by native
;; linkers and cross linkers which have been configured with the
;; --with-sysroot option."
"--with-sysroot=/"
;; Use the zlib package instead of the bundled zlib.
"--with-system-zlib"
;; Support zstd compressed debug sections.
"--with-zstd"
(if target
(list
;; Build for a specific target. Actually the configure
;; option --enable-targets=all could build executables usable
;; for any target, but this is not yet supported by the GNU
;; assembler.
(string-append "--target=" target))
'())))))
(native-inputs (list perl pkg-config texinfo dejagnu))
(inputs (list zlib (list zstd "lib")))
(synopsis "The GNU binary utilities ld, as, gold and others")
(description
"The GNU Binutils are a collection of binary tools. The main ones are
@itemize
@item ld - the GNU linker
@item as - the GNU assempler
@item gold - a new, faster, elf only linker.
@end itemize
But they also include:
@itemize
@item addr2line - Converts addresses into filenames and line numbers.
@item ar - A utility for creating, modifying and extracting from archives.
@item c++filt - Filter to demangle encoded C++ symbols.
@item dlltool - Creates files for building and using DLLs.
@item elfedit - Allows alteration of ELF format files.
@item gprof - Displays profiling information.
@item gprofng - Collects and displays application performance data.
@item nlmconv - Converts object code into an NLM.
@item nm - Lists symbols from object files.
@item objcopy - Copies and translates object files.
@item objdump - Displays information from object files.
@item ranlib - Generates an index to the contents of an archive.
@item readelf - Displays information from any ELF format object file.
@item size - Lists the section sizes of an object or archive file.
@item strings - Lists printable strings from files.
@item strip - Discards symbols.
@item windmc - A Windows compatible message compiler.
@item windres - A compiler for Windows resource files.
@end itemize
As well as some libraries:
@itemize
@item libbfd - A library for manipulating binary files in a variety of different formats.
@item libctf - A library for manipulating the CTF debug format.
@item libopcodes - A library for assembling and disassembling a variety of different assembler languages.
@item libsframe - A library for manipulating the SFRAME debug format.
@end itemize
Most of these programs use BFD, the Binary File Descriptor library, to do
low-level manipulation. Many of them also use the opcodes library to assemble
and disassemble machine instructions.")
(license license:gpl3+)
(home-page "https://www.gnu.org/software/binutils/"))
gcc-c-toolchain))
(define-public Binutils-arm-none-eabi
(make-binutils "arm-none-eabi"))
(define*-public (make-gcc-cross-sans-libc-configure-flags #:key
target
(configure-flags '())
binutils
#:allow-other-keys)
"Make configure-flags to build a GCC cross-compiler for TARGET without a
libc, which can be used to build a C-library as newlib or picolibc. Additional
CONFIGURE-FLAGS can be used for target or C-library specific GCC options."
#~(cons*
;; Disable anything not needed to build a libc.
"--disable-decimal-float"
;; Prevent the generation of useless dependency files.
"--disable-dependency-tracking"
;; The libstdc++ requires a libc for a hosted build, which we do not have.
"--disable-hosted-libstdcxx"
;; Disable anything not needed to build a libc.
"--disable-libatomic"
"--disable-libgomp"
"--disable-libitm"
"--disable-libmpx"
"--disable-libmudflap"
"--disable-libquadmath"
"--disable-libsanitizer"
"--disable-libssp"
;; Save space by disabling pre-compiled libstdc++ headers.
"--disable-libstdcxx-pch"
"--disable-libvtv"
;; Multiarch support is not a topic for Guix.
"--disable-multiarch"
;; Disable anything not needed to build a libc.
"--disable-shared"
"--disable-threads"
;; Disable all language frontends except for C and C++.
"--enable-languages=c,c++"
;; Avoid parallel linking to not crash on systems with limited memory.
"--enable-link-serialization"
;; Enable support for thread-local-storage.
"--enable-tls"
(string-append "--target=" #$target)
;; All paths to --with-… options are relative to the sysroot. As store
;; paths are absolute and to get --without-headers working properly,
;; --with-sysroot must not be used, otherwise --with-newlib is needed.
;; The first set of include paths consists of #$output/include-c++/… and
;; #$output:lib/…/include. Second is usually /usr/local/include, which is
;; documented to be avoided, if the same value is used for both --prefix
;; and --with-local-prefix.
(string-append "--with-local-prefix=" #$output)
;; Third set of include paths is normally for a libc, which usually needs a
;; fourth set of include paths for kernel and system headers, which we do
;; not want.
;; Using --without-headers prevents further sets of include paths.
"--without-headers"
;; Embed further options.
(string-append
"--with-specs="
;; Without a libc we have to ensure to not link missing files. The option
;; -nostlib removes -lgcc as well, which we want to preserve. Without the
;; startfiles there is no _start entry function, and the linker prints a
;; warning. To suppress this warning we use main instead as entry.
"-nolibc -nostartfiles -Wl,-entry=main "
;; Ensure that the built GCC will find the right executables from
;; Binutils. Unfortunately GCC does not search for a target-prefixed
;; assembler but just 'as'. Therefore we need to embed a proper path to
;; the cross Binutils. Luckily collet2 also searches for the linker at
;; this path before searching for a target-prefixed 'ld' somewhere else.
"-B" #$binutils "/" #$target "/bin")
;; Use the zlib package instead of the zlib bundled with gcc.
"--with-system-zlib"
'#$configure-flags))
(define*-public (make-cross-gcc gcc cross-binutils #:key
cross-libc
package-name-suffix)
"Make a GCC cross-compiler package based on a modified but still native GCC
package using the CROSS-BINUTILS and optional CROSS-LIBC packages. If a
CROSS-LIBC is given, then its name, which usually ends with the target name, is
appended to the GCC package name, else the string in PACKAGE-NAME-SUFFIX
is appended and usually contains the target name."
(package
(inherit gcc)
(name (string-append (package-name gcc)
"-cross-"
(if cross-libc (package-name cross-libc)
package-name-suffix)))
(inputs '())
;; TODO Use (modify-inputs (package-inputs gcc) (prepend cross-binutils)).
(native-inputs (append (list (list "cross-binutils" cross-binutils))
(package-inputs gcc)))))
(define*-public (make-cross-c-toolchain target
gcc
make-gcc
make-gcc-cross-configure-flags
#:key
(configure-flags '())
cross-libc
(binutils binutils)
(propagated-inputs '()))
"Make a C-toolchain targeting TARGET consisting of a cross-compiler,
cross-compiled BINUTILS, and optionally a C-library.
The cross-compiler will be build with another toolchain using the given host GCC
and BINUTILS. The functions MAKE-GCC and MAKE-GCC-CROSS-CONFIGURE-FLAGS are
used to create a GCC cross-compiler package using an optional C-library package
CROSS-LIBC. The result can be used by the transformation function
'package-with-c-toolchain' and to build a GCC-toolchain package with
'make-gcc-toolchain-package'.
The additional CONFIGURE-FLAGS get passed to the MAKE-GCC-CROSS-CONFIGURE-FLAGS
function to add target or C-library specific GCC options.
The PROPAGATED_INPUTS argument is an alist of package-names and packages which
take percedence over the usual toolchain packages. This might be needed to
override tools from the toolchain."
(let* ((c-toolchain (make-c-toolchain gcc binutils ld-wrapper))
(cross-binutils (make-binutils target))
;; The startfile-dir is relative to #$cross-libc or #$cross-gcc:lib.
;; By default picolibc has no target specific directory and in newlib
;; we use a snippet to remove it.
(startfile-dir (if cross-libc
;; This is relative to #$cross-libc.
"/lib"
;; This is relative to #$cross-gcc:lib.
(string-append "/lib/gcc/" target)))
(cross-gcc
(package-with-c-toolchain
(make-cross-gcc (make-gcc (make-gcc-phase-pre-configure
#:libc cross-libc
#:startfile-dir startfile-dir)
(make-gcc-cross-configure-flags
#:target target
#:configure-flags configure-flags
#:binutils cross-binutils
#:libc cross-libc))
cross-binutils
#:cross-libc cross-libc
#:package-name-suffix
(string-append "sans-libc-" target))
c-toolchain)))
(make-c-toolchain cross-gcc cross-binutils
#:propagated-inputs propagated-inputs)))
(define*-public (make-picolibc target c-toolchain #:key (configure-flags '()))
"Make a picolibc package for TARGET with the given CONFIGURE-FLAGS, using the
given C-TOOLCHAIN."
(package-with-c-toolchain
(package
(name (string-append "picolibc-" target))
(version "1.8.6")
(source
(origin
(method git-fetch)
(uri (git-reference
(url "https://keithp.com/cgit/picolibc.git")
(commit version)))
(sha256
(base32 "16y5xgz07hrlmc8abc1vqdcf953xr4qn6jaz1z6gyf71iazgwvz5"))))
(build-system meson-build-system)
(arguments
(list
#:configure-flags
#~(cons* "--cross-file"
(string-append (getcwd)
"/source/scripts/cross-" #$target ".txt")
"-Dspecsdir=lib"
"-Dtests=true"
'#$configure-flags)
#:build-type "release"
;; As we do not use Guix' cross-build facilities to build picolibc,
;; the meson-build-system thinks (inherited from gnu-build-system)
;; that it is doing a native build and uses strip instead of the
;; target-prefixed strip. As a workaround we could add the target
;; specific bin directory of Binutils to PATH. Or we skip the strip
;; phase.
#:strip-binaries? #f
#:phases
#~(modify-phases %standard-phases
(add-after 'unpack 'remove-paths-from-specs
(lambda _
(substitute* "picolibc.specs.in"
;; As we will get the include paths of GCC right, there is no
;; need to use the -isystem option for picolibc. Doing so
;; breaks the include-next chain of libstdc++. The picolibc
;; author provided a patch for GCC to crosstool-ng to mitigate
;; the negative effect of using -isystem.
;; <https://keithp.com/picolibc/picolibc-2021-notes.pdf>
;; page 20,
;; <https://github.com/crosstool-ng/crosstool-ng/commit/83029d75705e029ba17494d4132e1c01294ce85e>.
;; The substitute offers additional --picolibc-prefix and
;; --picolibc-buildtype options, which we cannot support.
(("@SPECS_ISYSTEM@ ") "")
;; The substitute for @SPECS_LIBPATH@ offers additional
;; --picolibc-prefix and --picolibc-buildtype options, which we
;; cannot support. As we will get the library search paths of
;; GCC right, there is no need to specify a library search path
;; in the picolibc.specs file.
(("@SPECS_LIBPATH@") "")
;; The substitute for @PICOLIBC_LD@ offers additional
;; --picolibc-prefix and --picolibc-buildtype options, which we
;; cannot support. Instead we change it to the absolute path
;; of the picolibc.ld linker script. The used -T option
;; depends on preceeding -L options. If we were prepending an
;; -L option in @SPECS_LIBPATH@, then that path would get
;; precedence over multilib search paths and wrong libraries
;; would be linked.
(("@PICOLIBC_LD@")
(string-append #$output "/lib/@PICOLIBC_LD@"))
;; The substitute for @SPECS_STARTFILE@ offers additional
;; --picolibc-prefix and --picolibc-buildtype options, which we
;; cannot support. As we set the buildt-in spec string
;; *startfile_prefix_spec of GCC right, we do not need to add a
;; path. But we need to keep the startfile itself and the
;; picolibc specific --crt0 option to select a different one.
(("@SPECS_STARTFILE@")
"%{-crt0=*:crt0-%*%O%s; :crt0%O%s}"))))
;; The built picolibc has no shared objects with DT_RUNPATH entries
;; to shrink, and this phase fails, probably because the produced
;; elf-files are not native ones. So we simply delete the
;; shrink-runpath phase.
(delete 'shrink-runpath))))
(native-inputs (list texinfo perl))
(home-page "https://www.sourceware.org/newlib/")
(synopsis "C Libraries for smaller embedded systems")
(description
"Picolibc is a set of standard C libraries, both libc and libm, designed
for smaller embedded systems with limited ROM and RAM.")
(license (license:non-copyleft
"file://COPYING.picolibc")))
c-toolchain))
(define*-public (make-newlib target
c-toolchain
#:key
(configure-flags
;; The configure-flags are inspired by
;; newlib_configure found in
;; <https://armkeil.blob.core.windows.net/developer/Files/downloads/gnu/13.2.rel1/manifest/arm-gnu-toolchain-arm-none-eabi-abe-manifest.txt>.
;; Got that link in section "Linaro ABE example
;; manifest files for Linux hosted cross
;; toolchains" form
;; <https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads>.
'("--disable-dependency-tracking"
"--disable-newlib-supplied-syscalls"
"--enable-newlib-io-long-long"
"--enable-newlib-io-c99-formats"
"--enable-newlib-mb"
"--enable-newlib-reent-check-verify"
"--enable-newlib-register-fini"
"--enable-newlib-retargetable-locking")))
"Make a newlib package for TARGET with the given CONFIGURE-FLAGS, using the
given C-TOOLCHAIN."
(package-with-c-toolchain
(package
(name (string-append "newlib-" target))
(version "4.4.0")
(source
(origin
(method url-fetch)
(uri "ftp://sourceware.org/pub/newlib/newlib-4.4.0.20231231.tar.gz")
(sha256
(base32 "04rg1wqwdvxf74pjiml1h1jx7dp4w2gr8s6dmzgm22dzw4wnl5hc"))))
(build-system gnu-build-system)
(arguments
(list
#:out-of-source? #t
#:configure-flags
#~(quote #$(cons* (string-append "--target=" target)
configure-flags))
#:phases
#~(modify-phases %standard-phases
(add-before 'configure 'remove-target-directory
(lambda _
;; An intermediate target directory before the include and lib
;; directories of newlib is not needed. To keep the flags in
;; make-gcc-cross-configure-flags common for newlib and picolibc
;; and as the mesa-build-system used by picolibc prevents to set
;; a prefix containing a target folder, we remove the target
;; folder from the newlib output. Alternatively we could patch
;; an unneeded target directory into the meoson.build file of
;; picolibc. However, to keep the configure-flags for GCC simple
;; and close to the flags for the native GCC, we patch newlib.
(substitute* "configure"
(("^tooldir='\\$\\{exec_prefix\\}'/.*$")
"tooldir='${exec_prefix}'\n"))))
(add-after 'unpack 'fix-references-to-/bin/sh
(lambda _
(substitute* (find-files "libgloss" "^Makefile\\.in$")
;; There are plenty Makefile.in below libgloss which
;; reference /bin/sh. They must all be fixed.
(("/bin/sh")
(which "sh")))))
(add-after 'install 'remove-nano
(lambda _
(map delete-file (find-files #$output "nano")))))))
(native-inputs (list texinfo GCC))
(home-page "https://www.sourceware.org/newlib/")
(synopsis "C library for use on embedded systems")
(description
"Newlib is a C library intended for use on embedded systems. It is a
conglomeration of several library parts that are easily usable on embedded
products.")
(license (list license:gpl2+
license:lgpl2.1+
license:gpl3+
license:lgpl3
(license:non-copyleft "file://COPYING.LIBGLOSS")
(license:non-copyleft "file://COPYING.NEWLIB"))))
c-toolchain))
(define-public (make-newlib-nano target c-toolchain)
"Make a newlib-nano package for TARGET using the given C-TOOLCHAIN."
(package
(inherit (make-newlib
target
c-toolchain
;; The configure-flags are inspired by newlib_configure found in
;; <https://armkeil.blob.core.windows.net/developer/Files/downloads/gnu/13.2.rel1/manifest/arm-gnu-toolchain-arm-none-eabi-nano-abe-manifest.txt>.
;; Got that link in section "Linaro ABE example manifest files for
;; Linux hosted cross toolchains" form
;; <https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads>.
#:configure-flags
'("--disable-dependency-tracking"
"--disable-newlib-fseek-optimization"
"--disable-newlib-fvwrite-in-streamio"
"--disable-newlib-supplied-syscalls"
"--disable-newlib-unbuf-stream-opt"
"--disable-newlib-wide-orient"
"--enable-lite-exit"
"--enable-newlib-global-atexit"
"--enable-newlib-nano-formatted-io"
"--enable-newlib-nano-malloc"
"--enable-newlib-reent-check-verify"
"--enable-newlib-reent-small"
"--enable-newlib-retargetable-locking")))
(name (string-append "newlib-nano-" target))
;; TODO Add nano suffix to installed files, keep nano related files.
(synopsis
"C library for use on embedded systems with limited memory, not ready")))
(define-public (make-cross-c-library make-cross-libc target configure-flags)
"Make a C-library package for TARGET using the MAKE-CROSS-LIBC function and a
GCC cross c-toolchain, which is built with additional CONFIGURE-FLAGS."
(let ((c-toolchain-sans-libc
(make-cross-c-toolchain target
GCC
make-gcc
make-gcc-cross-sans-libc-configure-flags
#:configure-flags configure-flags)))
(make-cross-libc target c-toolchain-sans-libc)))
(define*-public (make-gcc-cross-configure-flags #:key
target
(configure-flags '())
binutils
libc
#:allow-other-keys)
"Make configure-flags to build a GCC cross-compiler for TARGET using LIBC.
Additional CONFIGURE-FLAGS can be used for target or C-library specific GCC options."
#~(cons*
(string-append "--target=" #$target)
;; All paths to --with-… options are relative to the sysroot. As store
;; paths are absolute, the sysroot needs to be set to /.
"--with-sysroot=/"
;; The first set of include paths consists of #$output/include-c++/… and
;; #$output:lib/…/include. Second is usually /usr/local/include, which is
;; documented to be avoided, if the same value is used for both --prefix
;; and --with-local-prefix.
(string-append "--with-local-prefix=" #$output)
;; Third set is #$output:lib/…/include-fixed, which expects #$libc/include
;; and #$kernel-headers/include to follow in this order.
;; Fourth and usually the last include path is /usr/include containing all
;; system headers. It is only possible to specify one path for this. Set
;; the #$libc/include path and prevent the use of /usr/include.
;; Using newlib or picolibc for bare-metal does not require kernel-headers.
(string-append
"--with-native-system-header-dir=" #$libc "/include")
;; Embed further search paths.
(string-append
"--with-specs="
;; Ensure that the built GCC will find the right executables from
;; Binutils. Unfortunately GCC does not search for a target-prefixed
;; assembler but just 'as'. Therefore we need to embed a proper path to
;; the cross Binutils. Luckily collet2 also searches for the linker at
;; this path before searching for a target-prefixed 'ld' somewhere else.
"-B" #$binutils "/" #$target "/bin "
;; Embed the link-time search path to #$libc/lib for libraries, specs file
;; and the startfile. The -B option has to be used to make it a multilib
;; prefix (which is not clearly documented) and to search there for the
;; specs and startfile.
"-B" #$libc "/lib "
;; Embed the link-time search path to libstdc++ and other libraries.
;; The -B option has to be used to make it a multilib prefix (which is not
;; clearly documented).
"-B" #$output "/" #$target "/lib")
;; Prevent the generation of useless dependency files.
"--disable-dependency-tracking"
;; Multiarch support is not a topic for Guix.
"--disable-multiarch"
;; Save space by disabling pre-compiled libstdc++ headers.
"--disable-libstdcxx-pch"
;; Disable all language frontends except for C, C++. It seems not to be
;; possible to configure libobjc with newlib or picolibc, therefore
;; Objective-C and Objective-C++ are not supported.
"--enable-languages=c,c++"
;; Avoid parallel linking to not crash on systems with limited memory.
"--enable-link-serialization"
;; Build multiple versions of target libraries.
"--enable-multilib"
;; Prevent the C++ headers in #$output:lib, put them in #$output:out
;; instead. Use an unconventional path to prevent it from being added to
;; the environment variables C_INCLUDE_PATH, CPLUS_INCLUDE_PATH and
;; OBJC_INCLUDE_PATH, OBJCPLUS_INCLUDE_PATH.
"--with-gxx-include-dir=$(prefix)/include-c++"
;; Use the zlib package instead of the zlib bundled with gcc.
"--with-system-zlib"
'#$configure-flags))
(define*-public (make-gcc-cross-libc-c-toolchain make-cross-libc
target
#:key
(with-multilib-list "default")
(configure-flags '()))
"Make a cross GCC package for TARGET using a C-library build with
MAKE-CROSS-LIBC. Both the cross GCC and the C-library can be build
WITH-MULTILIB-LIST and the cross GCC with additional CONFIGURE-FLAGS to match
needs of the C-library."
(let* ((with-multilib-list
(string-append "--with-multilib-list=" with-multilib-list))
(cross-libc (make-cross-c-library make-cross-libc
target
(list with-multilib-list))))
(make-cross-c-toolchain target
GCC
make-gcc
make-gcc-cross-configure-flags
#:configure-flags
(cons* with-multilib-list
configure-flags)
#:cross-libc cross-libc)))
(define*-public (make-gcc-cross-libc-arm-none-eabi-c-toolchain
make-cross-libc
#:key (configure-flags '()))
"Make a cross GCC package for arm-none-eabi using a C-library build with
MAKE-CROSS-LIBC. Both the cross GCC and the C-library are build using
'--with-multilib-list=aprofile,rmprofile' and the GCC can be build with
additional CONFIGURE-FLAGS to match needs of the C-library."
(make-gcc-cross-libc-c-toolchain make-cross-libc
"arm-none-eabi"
#:with-multilib-list "aprofile,rmprofile"
#:configure-flags configure-flags))
(define-public GCC-cross-picolibc-arm-none-eabi-c-toolchain
(make-gcc-cross-libc-arm-none-eabi-c-toolchain
make-picolibc
#:configure-flags
'(;; Disable the GCC stack smashing protection, as picolibc has its own. If
;; libssp is enabled, then there will be include/ssp inside GCC as well as
;; inside picolibc and the ones from GCC will be inluded. In the end there
;; would be an error from the preprocessor that ssp.h is not found.
"--disable-libssp"
;; Ensure that libstdc++ is using the standard C stdio functions from
;; picolibc instead of POSIX implementations.
"--enable-cstdio=stdio_pure"
;; Enable thread-local-storage in GCC, which is used by picolibc.
"--enable-tls"
;; The picolibc implements __eprintf as newlib does.
"--with-newlib")))
(define-public (make-gcc-cross-newlib-arm-none-eabi-c-toolchain
make-newlib-variant)
"Make a GCC cross-compiler c-toolchain with a variont of newlib, which is
built with the MAKE-NEWLIB-VARIANT function."
(make-gcc-cross-libc-arm-none-eabi-c-toolchain
make-newlib-variant
#:configure-flags
'(;; Disable the GCC stack smashing protection, as newlib has its own.
"--disable-libssp"
;; GCC requires __aeabi_read_tp for thread-local-storage, which is not
;; implemented by newlib, contrary to picolibc.
"--disable-tls"
;; Ensure that GCC optimizes for newlib regarding __eprintf.
"--with-newlib")))
(define-public GCC-cross-newlib-arm-none-eabi-c-toolchain
(make-gcc-cross-newlib-arm-none-eabi-c-toolchain make-newlib))
(define-public GCC-cross-newlib-nano-arm-none-eabi-c-toolchain
(make-gcc-cross-newlib-arm-none-eabi-c-toolchain make-newlib-nano))
(define-public GCC-cross-picolibc-arm-none-eabi-toolchain
(package
(inherit (make-gcc-toolchain-package
GCC-cross-picolibc-arm-none-eabi-c-toolchain))
(synopsis
"Complete GCC toolchain for C/C++ cross development on ARM Cortex-A and
Cortex-M micro-controllers with picolibc")
(description
"This package provides a complete GCC toolchain for C/C++ cross development
on Arm Cortex-A, Cortex-R and Cortex-M micro-controllers. This includes GCC,
picolibc and Binutils. GCC is the GNU Compiler Collection.")))
(define-public GCC-cross-newlib-arm-none-eabi-toolchain
(package
(inherit (make-gcc-toolchain-package
GCC-cross-newlib-arm-none-eabi-c-toolchain))
(synopsis
"Complete GCC toolchain for C/C++ cross development on ARM Cortex-A and
Cortex-M micro-controllers with newlib")
(description
"This package provides a complete GCC toolchain for C/C++ cross development
on Arm Cortex-A, Cortex-R and Cortex-M micro-controllers. This includes GCC,
newlib and Binutils. GCC is the GNU Compiler Collection.")))
(define-public GCC-cross-newlib-nano-arm-none-eabi-toolchain
(package
(inherit (make-gcc-toolchain-package
GCC-cross-newlib-nano-arm-none-eabi-c-toolchain))
(synopsis
"Complete GCC toolchain for C/C++ cross development on ARM Cortex-A and
Cortex-M micro-controllers with newlib-nano")
(description
"This package provides a complete GCC toolchain for C/C++ cross development
on Arm Cortex-A, Cortex-R and Cortex-M micro-controllers. This includes GCC,
newlib-nano and Binutils. GCC is the GNU Compiler Collection.")))
(define-public GCC-cross-picolibc-arm-none-eabi
(c-toolchain-input-package GCC-cross-picolibc-arm-none-eabi-c-toolchain
"gcc"))
(define-public GCC-cross-newlib-arm-none-eabi
(c-toolchain-input-package GCC-cross-newlib-arm-none-eabi-c-toolchain
"gcc"))
(define-public GCC-cross-newlib-nano-arm-none-eabi
(c-toolchain-input-package GCC-cross-newlib-nano-arm-none-eabi-c-toolchain
"gcc"))
(define-public (c-toolchain gcc-toolchain-package)
"Make a c-toolchain from a GCC-TOOLCHAIN-PACKAGE, a union of GCC, Binutils and
possibly more packages. The result can be used by the transformation function
'package-with-c-toolchain'."
(list (list "toolchain" gcc-toolchain-package)))
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