ossp-uuid, libffi, libgcrypt: Pass --tag=CC option to libtool

libtool tries to guess the --tag value based on CC/CXX environment
variables and the compile commandline generated by makefiles. This
heuristics however fails when we construct CC variables in OE
and add security flags to it, especially -fPIE -pie which are added
by external compilers e.g. clang particularly. It fails because
libtool removed PIE flags from compiler cmdline intelligently
if it figures out that its building a library, which means that
the CC variable passed from cmdline does not match with the compiler
cmdline constructed by libtool and we end up with errors like

| arm-bec-linux-musleabi-libtool: compile: unable to infer tagged configuration
| arm-bec-linux-musleabi-libtool:   error: specify a tag with '--tag'

This works with internal gcc toolchain because we configure gcc for
PIE when hardening is selected and dont pass -fPIE -pie options explicitly
but this is not an option for clang, and some external gcc toolchains
using older gcc

This patch adds the --tag option to help libtool set correct tags
in packages where it cant get it right via its heuristics

(From OE-Core rev: 0505075ae8d339ba097aebb82b4d0ae62f87c0a9)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/meta/recipes-devtools/ossp-uuid/ossp-uuid/libtool-tag.patch b/meta/recipes-devtools/ossp-uuid/ossp-uuid/libtool-tag.patch
new file mode 100644
index 0000000000..7f601afab5
--- /dev/null
+++ b/meta/recipes-devtools/ossp-uuid/ossp-uuid/libtool-tag.patch
@@ -0,0 +1,21 @@
+Repect LIBTOOLFLAGS
+
+This add a knob that can be controlled from env to set generic options
+for libtool
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: uuid-1.6.2/Makefile.in
+===================================================================
+--- uuid-1.6.2.orig/Makefile.in
++++ uuid-1.6.2/Makefile.in
+@@ -56,7 +56,7 @@ RM          = rm -f
+ CP          = cp
+ RMDIR       = rmdir
+ SHTOOL      = $(S)/shtool
+-LIBTOOL     = @LIBTOOL@
++LIBTOOL     = @LIBTOOL@ $(LIBTOOLFLAGS)
+ TRUE        = true
+ POD2MAN     = pod2man
+ PERL        = @PERL@