[Buildroot] [PATCH v16 1/4] package/libiberty: new package

[aduskett at gmail.com]

From: Adam Duskett <Aduskett at gmail.com>

Some packages, like prelink-cross, 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 common practice 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 packages usually bundle libiberty, it usually only installs a static
version. Furthermore, it does not obey the usual --enable-shared and
--disable-static flags; it only ever builds a static version.

Furthermore, -fPIC is not used with this library, but some packages may pick it
to build shared objects. This behavior 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 always build
before host-gdb.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Signed-off-by: Adam Duskett <Aduskett at gmail.com>
---
Changes v15 -> v16:
  - Cleaned up the grammar in the commit message.

Changes v1 -> v15:
  - 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 d8ea23e0b3..79ddddd9c3 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2552,6 +2552,7 @@ 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))
-- 
2.24.1