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poky/meta/recipes-devtools/gcc/gcc-runtime.inc
Alejandro Hernandez Samaniego 09b49a35e1 tclibc-picolibc: Adds a new TCLIBC variant to build with picolibc as C library 
Enables usage of TCLIBC=picolibc extending OE functionality to build and use
picolibc based toolchains to build baremetal applications.

Picolibc is a set of standard C libraries, both libc and libm, designed for
smaller embedded systems with limited ROM and RAM. Picolibc includes code
from Newlib and AVR Libc, but adresses some of newlibs concerns, it retains
newlibs directory structure, math, string and locale implementations, but
removed the GPL bits used to build the library, swiches old C style code for
C18 and replaces autotools with meson.

This patch adds a picolibc recipe for the C library, a picolibc-helloworld
recipe that contains an example application and a testcase that builds it.

Picolibc can be built for ARM and RISCV architectures, its been tested both
for 32 and 64 bits, the provided example recipe produces the following output:

hello, world

Runqemu does not automatically show any output since it hides QEMU stderr which
is where the QEMU monitors output is directed to when using semihosting, but,
manually running the same QEMU command does work properly.

(From OE-Core rev: c7535ecaccb72ef21a61f9aec5c68e61fb4f6fb6)

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandro@enedino.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2024-07-26 12:28:42 +01:00

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require gcc-configure-common.inc
SUMMARY = "Runtime libraries from GCC"
# Over-ride the LICENSE set by gcc-${PV}.inc to remove "& GPLv3"
# All gcc-runtime packages are now covered by the runtime exception.
LICENSE = "GPL-3.0-with-GCC-exception"
CXXFLAGS:remove = "-fvisibility-inlines-hidden"
EXTRA_OECONF_PATHS = "\
--with-gxx-include-dir=${includedir}/c++/${BINV} \
--with-sysroot=/not/exist \
--with-build-sysroot=${STAGING_DIR_TARGET} \
"
EXTRA_OECONF:append:linuxstdbase = " --enable-clocale=gnu"
EXTRA_OECONF:append = " --cache-file=${B}/config.cache"
EXTRA_OECONF:append:libc-newlib = " --with-newlib --with-target-subdir"
EXTRA_OECONF:append:libc-picolibc = " --with-newlib --with-target-subdir"
EXTRA_OECONF:append:libc-baremetal = " --with-target-subdir"
# Disable ifuncs for libatomic on arm conflicts -march/-mcpu
EXTRA_OECONF:append:arm = " libat_cv_have_ifunc=no "
EXTRA_OECONF:append:armeb = " libat_cv_have_ifunc=no "
DISABLE_STATIC:class-nativesdk ?= ""
# Newlib does not support symbol versioning on libsdtcc++
SYMVERS_CONF:libc-newlib = ""
SYMVERS_CONF:libc-picolibc = ""
# Building with thumb enabled on armv6t fails
ARM_INSTRUCTION_SET:armv6 = "arm"
RUNTIMELIBITM = "libitm"
RUNTIMELIBITM:arc = ""
RUNTIMELIBITM:mipsarch = ""
RUNTIMELIBITM:nios2 = ""
RUNTIMELIBITM:microblaze = ""
RUNTIMELIBITM:riscv32 = ""
RUNTIMELIBITM:riscv64 = ""
RUNTIMELIBITM:loongarch64 = ""
RUNTIMELIBSSP ?= ""
RUNTIMELIBSSP:mingw32 ?= "libssp"
RUNTIMETARGET = "${RUNTIMELIBSSP} libstdc++-v3 libgomp libatomic ${RUNTIMELIBITM} \
${@bb.utils.contains('FORTRAN', ',fortran', 'libquadmath', '', d)} \
"
# Only build libstdc++ for newlib
RUNTIMETARGET:libc-newlib = "libstdc++-v3"
RUNTIMETARGET:libc-picolibc = "libstdc++-v3"
# libiberty
# libgfortran needs separate recipe due to libquadmath dependency
do_configure () {
export CXX="${CXX} -nostdinc++ -L${WORKDIR}/dummylib"
# libstdc++ isn't built yet so CXX would error not able to find it which breaks stdc++'s configure
# tests. Create a dummy empty lib for the purposes of configure.
mkdir -p ${WORKDIR}/dummylib
${CC} -x c /dev/null -c -o ${WORKDIR}/dummylib/dummylib.o
${AR} rcs ${WORKDIR}/dummylib/libstdc++.a ${WORKDIR}/dummylib/dummylib.o
for d in libgcc ${RUNTIMETARGET}; do
echo "Configuring $d"
rm -rf ${B}/${TARGET_SYS}/$d/
mkdir -p ${B}/${TARGET_SYS}/$d/
cd ${B}/${TARGET_SYS}/$d/
chmod a+x ${S}/$d/configure
${S}/$d/configure ${CONFIGUREOPTS} ${EXTRA_OECONF}
if [ "$d" = "libgcc" ]; then
(cd ${B}/${TARGET_SYS}/libgcc; oe_runmake enable-execute-stack.c unwind.h md-unwind-support.h sfp-machine.h gthr-default.h)
fi
done
}
EXTRACONFFUNCS += "extract_stashed_builddir"
do_configure[depends] += "${COMPILERDEP}"
do_compile () {
for d in libgcc ${RUNTIMETARGET}; do
cd ${B}/${TARGET_SYS}/$d/
oe_runmake MULTIBUILDTOP=${B}/${TARGET_SYS}/$d/
done
}
do_install () {
for d in ${RUNTIMETARGET}; do
cd ${B}/${TARGET_SYS}/$d/
oe_runmake 'DESTDIR=${D}' MULTIBUILDTOP=${B}/${TARGET_SYS}/$d/ install
done
install -d ${D}${datadir}/gdb/auto-load/${libdir}
mv ${D}${libdir}/libstdc++*-gdb.py ${D}${datadir}/gdb/auto-load/${libdir}
if [ -d ${D}${libdir}/gcc/${TARGET_SYS}/${BINV}/include ]; then
install -d ${D}${libdir}/${TARGET_SYS}/${BINV}/include
mv ${D}${libdir}/gcc/${TARGET_SYS}/${BINV}/include/* ${D}${libdir}/${TARGET_SYS}/${BINV}/include
rmdir --ignore-fail-on-non-empty -p ${D}${libdir}/gcc/${TARGET_SYS}/${BINV}/include
fi
rm -rf ${D}${infodir}/libgomp.info* ${D}${infodir}/dir
rm -rf ${D}${infodir}/libitm.info ${D}${infodir}/dir
rm -rf ${D}${infodir}/libquadmath.info ${D}${infodir}/dir
if [ -d ${D}${libdir}/gcc/${TARGET_SYS}/${BINV}/finclude ]; then
rmdir --ignore-fail-on-non-empty -p ${D}${libdir}/gcc/${TARGET_SYS}/${BINV}/finclude
fi
if [ -d ${D}${infodir} ]; then
rmdir --ignore-fail-on-non-empty -p ${D}${infodir}
fi
if [ -d ${D}${libdir} ]; then
rmdir --ignore-fail-on-non-empty -p ${D}${libdir}
fi
}
do_install:append:class-target () {
if [ "${TARGET_OS}" = "linux-gnuspe" ]; then
ln -s ${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
fi
if [ "${TARGET_OS}" = "linux-gnun32" ]; then
if [ "${TARGET_VENDOR_MULTILIB_ORIGINAL}" != "" -a "${TARGET_VENDOR}" != "${TARGET_VENDOR_MULTILIB_ORIGINAL}" ]; then
mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-linux
ln -s ../${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-linux/32
elif [ "${MULTILIB_VARIANTS}" != "" ]; then
mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
ln -s ../${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux/32
else
ln -s ${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
fi
elif [ "${TARGET_OS}" = "linux-gnux32" ]; then
if [ "${TARGET_VENDOR_MULTILIB_ORIGINAL}" != "" -a "${TARGET_VENDOR}" != "${TARGET_VENDOR_MULTILIB_ORIGINAL}" ]; then
mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-linux
ln -s ../${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-linux/x32
elif [ "${MULTILIB_VARIANTS}" != "" ]; then
mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
ln -s ../${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux/32
else
ln -s ${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
fi
elif [ "${TARGET_VENDOR_MULTILIB_ORIGINAL}" != "" -a "${TARGET_VENDOR}" != "${TARGET_VENDOR_MULTILIB_ORIGINAL}" ]; then
mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}
ln -s ../${TARGET_SYS}/bits ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}/bits
ln -s ../${TARGET_SYS}/ext ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}/ext
fi
if [ "${TARGET_ARCH}" = "x86_64" -a "${MULTILIB_VARIANTS}" != "" ];then
ln -sf ../${X86ARCH32}${TARGET_VENDOR}-${TARGET_OS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-${TARGET_OS}/32
fi
if [ "${TCLIBC}" != "glibc" ]; then
case "${TARGET_OS}" in
"linux-musl" | "linux-*spe") extra_target_os="linux";;
"linux-musleabi") extra_target_os="linux-gnueabi";;
*) extra_target_os="linux";;
esac
ln -s ${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os
fi
chown -R root:root ${D}
}
INHIBIT_DEFAULT_DEPS = "1"
DEPENDS = "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}g++ libgcc virtual/${MLPREFIX}libc"
PROVIDES = "virtual/${TARGET_PREFIX}compilerlibs"
BBCLASSEXTEND = "nativesdk"
PACKAGES = "\
${PN}-dbg \
libstdc++ \
libstdc++-precompile-dev \
libstdc++-dev \
libstdc++-staticdev \
libssp \
libssp-dev \
libssp-staticdev \
libquadmath \
libquadmath-dev \
libquadmath-staticdev \
libgomp \
libgomp-dev \
libgomp-staticdev \
libatomic \
libatomic-dev \
libatomic-staticdev \
libitm \
libitm-dev \
libitm-staticdev \
"
# The base package doesn't exist, so we clear the recommends.
RRECOMMENDS:${PN}-dbg = ""
# include python debugging scripts
FILES:${PN}-dbg += "\
${datadir}/gcc-${BINV}/python/libstdcxx \
${datadir}/gdb/auto-load \
"
# Needed by libstdcxx pretty printer, however it is disabled intentionally
# as it adds build time dependency on bash and some cases e.g. no GPL3 cases
# bash is not availbale and builds fails
# So it needs to be added manually to images sadly.
# RDEPENDS:${PN}-dbg += "python3-datetime"
FILES:libstdc++ = "${libdir}/libstdc++.so.*"
SUMMARY:libstdc++ = "GNU standard C++ library"
FILES:libstdc++-dev = "\
${includedir}/c++/ \
${libdir}/libstdc++.so \
${libdir}/libstdc++*.la \
${libdir}/libsupc++.la \
"
SUMMARY:libstdc++-dev = "GNU standard C++ library - development files"
FILES:libstdc++-staticdev = "\
${libdir}/libstdc++*.a \
${libdir}/libsupc++.a \
"
SUMMARY:libstdc++-staticdev = "GNU standard C++ library - static development files"
FILES:libstdc++-precompile-dev = "${includedir}/c++/${TARGET_SYS}/bits/*.gch"
SUMMARY:libstdc++-precompile-dev = "GNU standard C++ library - precompiled header files"
FILES:libssp = "${libdir}/libssp.so.*"
SUMMARY:libssp = "GNU stack smashing protection library"
FILES:libssp-dev = "\
${libdir}/libssp*.so \
${libdir}/libssp*_nonshared.a \
${libdir}/libssp*.la \
${libdir}/${TARGET_SYS}/${BINV}/include/ssp \
"
SUMMARY:libssp-dev = "GNU stack smashing protection library - development files"
FILES:libssp-staticdev = "${libdir}/libssp*.a"
SUMMARY:libssp-staticdev = "GNU stack smashing protection library - static development files"
FILES:libquadmath = "${libdir}/libquadmath*.so.*"
SUMMARY:libquadmath = "GNU quad-precision math library"
FILES:libquadmath-dev = "\
${libdir}/${TARGET_SYS}/${BINV}/include/quadmath* \
${libdir}/libquadmath*.so \
${libdir}/libquadmath.la \
"
SUMMARY:libquadmath-dev = "GNU quad-precision math library - development files"
FILES:libquadmath-staticdev = "${libdir}/libquadmath.a"
SUMMARY:libquadmath-staticdev = "GNU quad-precision math library - static development files"
FILES:libgomp = "${libdir}/libgomp*${SOLIBS}"
SUMMARY:libgomp = "GNU OpenMP parallel programming library"
FILES:libgomp-dev = "\
${libdir}/libgomp*${SOLIBSDEV} \
${libdir}/libgomp*.la \
${libdir}/libgomp.spec \
${libdir}/${TARGET_SYS}/${BINV}/include/acc_prof.h \
${libdir}/${TARGET_SYS}/${BINV}/include/omp.h \
${libdir}/${TARGET_SYS}/${BINV}/include/openacc.h \
"
SUMMARY:libgomp-dev = "GNU OpenMP parallel programming library - development files"
FILES:libgomp-staticdev = "${libdir}/libgomp*.a"
SUMMARY:libgomp-staticdev = "GNU OpenMP parallel programming library - static development files"
FILES:libatomic = "${libdir}/libatomic.so.*"
SUMMARY:libatomic = "GNU C++11 atomics support library"
FILES:libatomic-dev = "\
${libdir}/libatomic.so \
${libdir}/libatomic.la \
"
SUMMARY:libatomic-dev = "GNU C++11 atomics support library - development files"
FILES:libatomic-staticdev = "${libdir}/libatomic.a"
SUMMARY:libatomic-staticdev = "GNU C++11 atomics support library - static development files"
FILES:libitm = "${libdir}/libitm.so.*"
SUMMARY:libitm = "GNU transactional memory support library"
FILES:libitm-dev = "\
${libdir}/libitm.so \
${libdir}/libitm.la \
${libdir}/libitm.spec \
"
SUMMARY:libitm-dev = "GNU transactional memory support library - development files"
FILES:libitm-staticdev = "${libdir}/libitm.a"
SUMMARY:libitm-staticdev = "GNU transactional memory support library - static development files"
require gcc-testsuite.inc
EXTRA_OEMAKE:prepend:task-check = "${PARALLEL_MAKE} "
MAKE_CHECK_TARGETS ??= "check-gcc ${@" ".join("check-target-" + i for i in d.getVar("RUNTIMETARGET").split())}"
# prettyprinters and xmethods require gdb tooling
MAKE_CHECK_IGNORE ??= "prettyprinters.exp xmethods.exp"
MAKE_CHECK_RUNTESTFLAGS ??= "${MAKE_CHECK_BOARDARGS} --ignore '${MAKE_CHECK_IGNORE}'"
# specific host and target dependencies required for test suite running
do_check[depends] += "dejagnu-native:do_populate_sysroot expect-native:do_populate_sysroot"
do_check[depends] += "virtual/libc:do_populate_sysroot"
# only depend on qemu if targeting linux user execution
do_check[depends] += "${@'qemu-native:do_populate_sysroot' if "user" in d.getVar('TOOLCHAIN_TEST_TARGET') else ''}"
# extend the recipe sysroot to include the built libraries (for qemu usermode)
do_check[prefuncs] += "extend_recipe_sysroot"
do_check[prefuncs] += "check_prepare"
do_check[dirs] = "${WORKDIR}/dejagnu ${B}"
do_check[nostamp] = "1"
do_check() {
export DEJAGNU="${WORKDIR}/dejagnu/site.exp"
# HACK: this works around the configure setting CXX with -nostd* args
sed -i 's#-nostdinc++ -L${WORKDIR}/dummylib##g' $(find ${B} -name testsuite_flags | head -1)
if [ "${TOOLCHAIN_TEST_TARGET}" = "user" ]; then
# qemu user has issues allocating large amounts of memory
export G_SLICE=always-malloc
# no test should need more that 10G of memory, this prevents tests like pthread7-rope from leaking memory
ulimit -m 4194304
ulimit -v 10485760
fi
oe_runmake -i ${MAKE_CHECK_TARGETS} RUNTESTFLAGS="${MAKE_CHECK_RUNTESTFLAGS}"
}
addtask check after do_compile do_populate_sysroot
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