bb.fatal("%s can't be built with %s, try -O1 instead" % (d.getVar('PN'), opt_effective))
}
-DEPENDS = "virtual/${TARGET_PREFIX}gcc-initial libgcc-initial linux-libc-headers"
+DEPENDS = "virtual/${TARGET_PREFIX}gcc libgcc-initial linux-libc-headers"
PROVIDES = "virtual/libc virtual/${TARGET_PREFIX}libc-for-gcc"
PROVIDES += "virtual/libintl virtual/libiconv"
libc_cv_ssp=no \
"
+# ifunc doesn't appear to work on mips, casuses libbfd assertion failures
+CACHED_CONFIGUREVARS_append_mipsarch = " libc_cv_ld_gnu_indirect_function=no"
+
GLIBC_EXTRA_OECONF ?= ""
GLIBC_EXTRA_OECONF_class-nativesdk = ""
INHIBIT_DEFAULT_DEPS = "1"
INHIBIT_DEFAULT_DEPS = "1"
EXTRADEPENDS = ""
-DEPENDS = "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}libc-for-gcc ${EXTRADEPENDS} ${NATIVEDEPS}"
+DEPENDS = "virtual/${TARGET_PREFIX}binutils ${EXTRADEPENDS} ${NATIVEDEPS}"
PROVIDES = "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}g++"
python () {
if d.getVar("TARGET_OS").startswith("linux"):
ARCH_FLAGS_FOR_TARGET += "-isystem${STAGING_DIR_TARGET}${target_includedir}"
+
+do_configure_prepend () {
+ install -d ${RECIPE_SYSROOT}${target_includedir}
+ touch ${RECIPE_SYSROOT}${target_includedir}/limits.h
+}
+
do_compile () {
export CC="${BUILD_CC}"
export AR_FOR_TARGET="${TARGET_SYS}-ar"
+#
+# Notes on the way the OE cross toolchain now works
+#
+# We need a libgcc to build glibc. Tranditionally we therefore built
+# a non-threaded and non-shared compiler (gcc-cross-initial), then use
+# that to build libgcc-initial which is used to build glibc which we can
+# then build gcc-cross and libgcc against.
+#
+# We were able to drop the glibc dependency from gcc-cross, with two tweaks:
+
+# a) specify the minimum glibc version to support in a configure option
+# b) create a dummy limits.h file so that later when glibc creates one,
+# the headers structure has support for it. We can do this with a simple
+# empty file
+#
+# Once gcc-cross is libc independent, we can use it to build both
+# libgcc-initial and then later libgcc.
+#
+# libgcc-initial is tricky as we need to imitate the non-threaded and
+# non-shared case. We can do that by hacking the threading mode back to
+# "single" even if gcc reports "posix" and disable libc presence for the
+# libgcc-intial build. We have to create the dummy limits.h to avoid
+# compiler errors from a missing header.
+#
+# glibc will fail to link with libgcc-initial due to a missing "exception
+# handler" capable libgcc (libgcc_eh.a). Since we know glibc doesn't need
+# any exception handler, we can safely symlink to libgcc.a.
+#
+
require libgcc-common.inc
-DEPENDS = "virtual/${TARGET_PREFIX}gcc-initial"
+DEPENDS = "virtual/${TARGET_PREFIX}gcc"
LICENSE = "GPL-3.0-with-GCC-exception"
-STAGINGCC = "gcc-cross-initial-${TARGET_ARCH}"
-STAGINGCC_class-nativesdk = "gcc-crosssdk-initial-${SDK_SYS}"
-PATH_prepend = "${STAGING_BINDIR_TOOLCHAIN}.${STAGINGCC}:"
-
PACKAGES = ""
EXTRA_OECONF += "--disable-shared"
-COMPILERINITIAL = "-initial"
-
inherit nopackages
# We really only want this built by things that need it, not any recrdeptask
deltask do_build
+
+do_configure_prepend () {
+ install -d ${STAGING_INCDIR}
+ touch ${STAGING_INCDIR}/limits.h
+ sed -i -e 's#INHIBIT_LIBC_CFLAGS =.*#INHIBIT_LIBC_CFLAGS = -Dinhibit_libc#' ${B}/gcc/libgcc.mvars
+ sed -i -e 's#inhibit_libc = false#inhibit_libc = true#' ${B}/gcc/Makefile
+}
+
+do_configure_append () {
+ sed -i -e 's#thread_header = .*#thread_header = gthr-single.h#' ${B}/${BPN}/Makefile
+}
+
+do_install_append () {
+ ln -s libgcc.a ${D}${libdir}/${TARGET_SYS}/${BINV}/libgcc_eh.a
+}
