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newlib: Enable building libstdc++ for newlib based toolchains

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Some baremetal applications might require support from libstdc++
On newlib based toolchains, libstdc++ can be built as a static
library that applications can then link against it.

Pass libsdtc++-(static)dev to LIBC_DEPENDENCIES allowing the
library to be present for cross compilation as well as on
sdk builds.

(From OE-Core rev: 18af9ecef6e247519d8a1573e32208bb69cf81fe)

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandro@enedino.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alejandro Enedino Hernandez Samaniego
2020-01-18 19:01:59 -08:00
committed by Richard Purdie
parent 0b088f99e6
commit e261883a0f
2 changed files with 9 additions and 4 deletions
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7
meta/conf/distro/include/tclibc-newlib.inc
View File

@@ -25,12 +25,11 @@ LIBC_DEPENDENCIES = "\
libgloss-dbg \
libgcc-dev \
libgcc-dbg \
libstdc++-dev \
libstdc++-staticdev \
"
# compilerlibs defaults to gcc-runtime, but we get runtime from libgloss
# we set ASSUME_PROVIDED because we cant set PREFERRED_PROVIDER
# for compilerlibs since its overridden by tcmode-default
ASSUME_PROVIDED += "virtual/${TARGET_PREFIX}compilerlibs virtual/crypt"
ASSUME_PROVIDED += "virtual/crypt"
# Its useful to be able to extend newlib, but we dont provide a native variant of libgloss
NEWLIB_EXTENDED ?= "libgloss libgcc"

6
meta/recipes-devtools/gcc/gcc-runtime.inc
View File

@@ -16,10 +16,14 @@ EXTRA_OECONF_PATHS = "\
EXTRA_OECONF_append_linuxstdbase = " --enable-clocale=gnu"
EXTRA_OECONF_append = " --cache-file=${B}/config.cache"
EXTRA_OECONF_append_libc-newlib = " --with-newlib"
# Disable ifuncs for libatomic on arm conflicts -march/-mcpu
EXTRA_OECONF_append_arm = " libat_cv_have_ifunc=no "
# Newlib does not support symbol versioning on libsdtcc++
SYMVERS_CONF_libc-newlib = ""
# Building with thumb enabled on armv6t fails
ARM_INSTRUCTION_SET_armv6 = "arm"
@@ -36,6 +40,8 @@ RUNTIMELIBSSP_mingw32 ?= "libssp"
RUNTIMETARGET = "${RUNTIMELIBSSP} libstdc++-v3 libgomp libatomic ${RUNTIMELIBITM} \
${@bb.utils.contains_any('FORTRAN', [',fortran',',f77'], 'libquadmath', '', d)} \
"
# Only build libstdc++ for newlib
RUNTIMETARGET_libc-newlib = "libstdc++-v3"
# libiberty
# libmudflap