[Buildroot] [PATCH v12 1/6] package/libiberty: new package

[aduskett at gmail.com <aduskett@gmail.com>]

From: Adam Duskett <Aduskett@gmail.com>

Some packages, like prelink-cross, will want to use libiberty but do
not bundle their own instance (which is good!).

However, libiberty is made for being bundled in packages: all GNU
packages that use libiberty (gcc, binutils, gdb et al...) all have
their own bundled variant. This means that there is no official
upstream for libiberty; the closest being as part of the
combined binutils-gdb tree.

So we introduce a new host-only package, that installs just libiberty
from a binutils released tarball.

Again, as libiberty is usually bundled in packages, it usually only
install a static version. Furthermore, it does not obey to the usual
--enable-shared and --disable-static flags; it only ever builds a
static version.

Furthermore, this library is not built with -fPIC, but some packages
may pick it to build shared objects. This is the case for host-gdb,
for example, which accidentally picks that library instead of its
internal one.

So, rather than fix the various gdb versions and variants we can use,
we ensure that the libiberty we install is usable in shared objects,
and we ensure it is always built before host-gdb.

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
---
Changes v1 -> v11:
  - Add this patch to the series

 DEVELOPERS                       |  1 +
 package/libiberty/libiberty.hash |  2 ++
 package/libiberty/libiberty.mk   | 27 +++++++++++++++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 package/libiberty/libiberty.hash
 create mode 100644 package/libiberty/libiberty.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index ce3fcb2de8..0da0fa9437 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2324,6 +2324,7 @@ F:	package/keyutils/
 F:	package/libbsd/
 F:	package/libedit/
 F:	package/libgsm/
+F:	package/libiberty/
 F:	package/libinput/
 F:	package/libiscsi/
 F:	package/libpri/
diff --git a/package/libiberty/libiberty.hash b/package/libiberty/libiberty.hash
new file mode 100644
index 0000000000..270f38dfa7
--- /dev/null
+++ b/package/libiberty/libiberty.hash
@@ -0,0 +1,2 @@
+# From ftp://gcc.gnu.org/pub/binutils/releases/sha512.sum
+sha512  d326408f12a03d9a61a9de56584c2af12f81c2e50d2d7e835d51565df8314df01575724afa1e43bd0db45cfc9916b41519b67dfce03232aa4978704492a6994a  binutils-2.32.tar.xz
diff --git a/package/libiberty/libiberty.mk b/package/libiberty/libiberty.mk
new file mode 100644
index 0000000000..17976fdd4f
--- /dev/null
+++ b/package/libiberty/libiberty.mk
@@ -0,0 +1,27 @@
+################################################################################
+#
+# libiberty
+#
+################################################################################
+
+LIBIBERTY_VERSION = 2.32
+LIBIBERTY_SOURCE = binutils-$(LIBIBERTY_VERSION).tar.xz
+LIBIBERTY_SITE = $(BR2_GNU_MIRROR)/binutils
+LIBIBERTY_DL_SUBDIR = binutils
+LIBIBERTY_SUBDIR = libiberty
+
+# We explicitly disable multilib, as we do in binutils.
+# By default, libiberty installs nothing, so we must force it.
+HOST_LIBIBERTY_CONF_OPTS = \
+	--disable-multilib \
+	--enable-install-libiberty
+
+# Some packages (e.g. host-gdb) will pick this library and build shared
+# objects with it. But libiberty does not honour the --enable-shared and
+# --disable-static flags; it only ever builds a static library no matter
+# what. So we must force -fPIC in build flags.
+HOST_LIBIBERTY_CONF_ENV = \
+	CFLAGS="$(HOST_CFLAGS) -fPIC" \
+	LDFLAGS="$(HOST_LDFLAGS) -fPIC"
+
+$(eval $(host-autotools-package))
-- 
2.21.0