# Build and install uClibc

# Work around a uClibc bug: it tries to use assembly directives on binutils
# versions that don't have them.

find . -name uClibc_arch_features.h | xargs sed -i 's/\#define \(__UCLIBC_HAVE_ASM_CFI_DIRECTIVES__\)/#undef \1/'

[ ! -z "$BUILD_VERBOSE" ] && VERBOSITY=V=2

make_uClibc()
{
  make -j $CPUS $VERBOSITY CROSS="${ARCH}-" \
    UCLIBC_LDSO_NAME=ld-uClibc KERNEL_HEADERS="$STAGE_DIR/include" \
    PREFIX="$STAGE_DIR/" RUNTIME_PREFIX=/ DEVEL_PREFIX=/ $1
}

# Configure

getconfig uClibc > "$WORK/mini.conf" || dienow

# Build and install

make KCONFIG_ALLCONFIG="$WORK/mini.conf" allnoconfig &&
mkdir -p "$STAGE_DIR/src" &&
cp .config "$STAGE_DIR/src/config-uClibc" &&
make_uClibc install || dienow

# Old versions of uClibc (0.9.30-ish) couldn't be told not to hardwire absolute
# paths into their linker scripts.  This isn't needed for current versions, and
# is allowed to fail if HAVE_SHARED=n

sed -i 's@/lib/@@g' "$STAGE_DIR/lib/libc.so" 2>/dev/null

# Build ldd and friends

if [ ! -z "$HOST_ARCH" ]
then
  # The uClibc utils/Makefile.in is crazy.  There's no way to specify a prefix,
  # or to pass in --static via CFLAGS.  Just build 'em by hand.

  "$ARCH-cc" utils/ldd.c -o "$STAGE_DIR/bin/${TOOLCHAIN_PREFIX}ldd" --static \
    -I ldso/include -DBUILDING_LINKAGE &&
  "$ARCH-cc" utils/ldconfig.c utils/chroot_realpath.c \
    -o "$STAGE_DIR/bin/${TOOLCHAIN_PREFIX}ldconfig" --static -I ldso/include \
    -DUCLIBC_RUNTIME_PREFIX='"/"' -DBUILDING_LINKAGE || dienow
fi