[OE-core] [PATCH 1/6] ossp-uuid, libffi, libgcrypt: Pass --tag=CC option to libtool

[Khem Raj]

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

Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 .../ossp-uuid/ossp-uuid/libtool-tag.patch           | 21 +++++++++++++++++++++
 meta/recipes-devtools/ossp-uuid/ossp-uuid_1.6.2.bb  |  2 ++
 meta/recipes-support/libffi/libffi_3.2.1.bb         |  3 ++-
 meta/recipes-support/libgcrypt/libgcrypt_1.7.8.bb   |  1 +
 4 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-devtools/ossp-uuid/ossp-uuid/libtool-tag.patch

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 at 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@
diff --git a/meta/recipes-devtools/ossp-uuid/ossp-uuid_1.6.2.bb b/meta/recipes-devtools/ossp-uuid/ossp-uuid_1.6.2.bb
index 85a1bcf5ca..5d9ca790e9 100644
--- a/meta/recipes-devtools/ossp-uuid/ossp-uuid_1.6.2.bb
+++ b/meta/recipes-devtools/ossp-uuid/ossp-uuid_1.6.2.bb
@@ -27,6 +27,7 @@ SRC_URI = "http://snapshot.debian.org/archive/debian/20160728T043443Z/pool/main/
 	   file://uuid-nostrip.patch \
            file://install-pc.patch \
            file://ldflags.patch \
+           file://libtool-tag.patch \
 	  "
 SRC_URI[md5sum] = "5db0d43a9022a6ebbbc25337ae28942f"
 SRC_URI[sha256sum] = "11a615225baa5f8bb686824423f50e4427acd3f70d394765bdff32801f0fd5b0"
@@ -37,6 +38,7 @@ inherit autotools update-alternatives
 
 EXTRA_OECONF = "--without-dce --without-cxx --without-perl --without-perl-compat --without-php --without-pgsql"
 EXTRA_OECONF = "--includedir=${includedir}/ossp"
+EXTRA_OEMAKE_class-target = "LIBTOOLFLAGS='--tag=CC'"
 
 do_configure_prepend() {
   # This package has a completely custom aclocal.m4, which should be acinclude.m4.
diff --git a/meta/recipes-support/libffi/libffi_3.2.1.bb b/meta/recipes-support/libffi/libffi_3.2.1.bb
index 43eee8efc4..b7da1c3bde 100644
--- a/meta/recipes-support/libffi/libffi_3.2.1.bb
+++ b/meta/recipes-support/libffi/libffi_3.2.1.bb
@@ -19,7 +19,7 @@ SRC_URI[md5sum] = "83b89587607e3eb65c70d361f13bab43"
 SRC_URI[sha256sum] = "d06ebb8e1d9a22d19e38d63fdb83954253f39bedc5d46232a05645685722ca37"
 
 EXTRA_OECONF += "--disable-builddir"
-
+EXTRA_OEMAKE_class-target = "LIBTOOLFLAGS='--tag=CC'"
 inherit autotools texinfo
 
 FILES_${PN}-dev += "${libdir}/libffi-${PV}"
@@ -29,3 +29,4 @@ FILES_${PN}-dev += "${libdir}/libffi-${PV}"
 MIPS_INSTRUCTION_SET = "mips"
 
 BBCLASSEXTEND = "native nativesdk"
+
diff --git a/meta/recipes-support/libgcrypt/libgcrypt_1.7.8.bb b/meta/recipes-support/libgcrypt/libgcrypt_1.7.8.bb
index 83351594ea..ec8b875efa 100644
--- a/meta/recipes-support/libgcrypt/libgcrypt_1.7.8.bb
+++ b/meta/recipes-support/libgcrypt/libgcrypt_1.7.8.bb
@@ -29,6 +29,7 @@ BINCONFIG = "${bindir}/libgcrypt-config"
 inherit autotools texinfo binconfig-disabled pkgconfig
 
 EXTRA_OECONF = "--disable-asm"
+EXTRA_OEMAKE_class-target = "LIBTOOLFLAGS='--tag=CC'"
 
 PACKAGECONFIG ??= "capabilities"
 PACKAGECONFIG[capabilities] = "--with-capabilities,--without-capabilities,libcap"
-- 
2.13.3