[OE-core] [PATCH 1/2] meson.bbclass: Remove the MESON_*_ARGS variables

[Peter Kjellerstedt]

The options in ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS} are already passed
via ${CC}/${CXX} and there is no reason to pass them a second time. Thus
we can remove MESON_TOOLCHAIN_ARGS. And when it is removed, the other
MESON_*_ARGS variables revert to the standard CFLAGS, CXXFLAGS and
LDFLAGS, so just use them directly instead.

Apart from the obvious improvement with not passing a lot of options
twice, this also solves a problem where -pie would be passed on the
command line in a way that it would prevent building any dynamic
libraries using meson if using a toolchain that is not built with
--enable-default-pie and if security_flags.inc is used.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt at axis.com>
---
 meta/classes/meson.bbclass | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/meta/classes/meson.bbclass b/meta/classes/meson.bbclass
index 0edbfc1815..70b3653738 100644
--- a/meta/classes/meson.bbclass
+++ b/meta/classes/meson.bbclass
@@ -30,11 +30,6 @@ MESONOPTS = " --prefix ${prefix} \
               -Dcpp_args='${BUILD_CPPFLAGS} ${BUILD_CXXFLAGS}' \
               -Dcpp_link_args='${BUILD_LDFLAGS}'"
 
-MESON_TOOLCHAIN_ARGS = "${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
-MESON_C_ARGS = "${MESON_TOOLCHAIN_ARGS} ${CFLAGS}"
-MESON_CPP_ARGS = "${MESON_TOOLCHAIN_ARGS} ${CXXFLAGS}"
-MESON_LINK_ARGS = "${MESON_TOOLCHAIN_ARGS} ${LDFLAGS}"
-
 EXTRA_OEMESON_append = " ${PACKAGECONFIG_CONFARGS}"
 
 MESON_CROSS_FILE = ""
@@ -78,7 +73,7 @@ def meson_endian(prefix, d):
         bb.fatal("Cannot determine endianism for %s-%s" % (arch, os))
 
 addtask write_config before do_configure
-do_write_config[vardeps] += "MESON_C_ARGS MESON_CPP_ARGS MESON_LINK_ARGS CC CXX LD AR NM STRIP READELF"
+do_write_config[vardeps] += "CC CXX LD AR NM STRIP READELF CFLAGS CXXFLAGS LDFLAGS"
 do_write_config() {
     # This needs to be Py to split the args into single-element lists
     cat >${WORKDIR}/meson.cross <<EOF
@@ -95,10 +90,10 @@ llvm-config = 'llvm-config8.0.0'
 
 [properties]
 needs_exe_wrapper = true
-c_args = ${@meson_array('MESON_C_ARGS', d)}
-c_link_args = ${@meson_array('MESON_LINK_ARGS', d)}
-cpp_args = ${@meson_array('MESON_CPP_ARGS', d)}
-cpp_link_args = ${@meson_array('MESON_LINK_ARGS', d)}
+c_args = ${@meson_array('CFLAGS', d)}
+c_link_args = ${@meson_array('LDFLAGS', d)}
+cpp_args = ${@meson_array('CXXFLAGS', d)}
+cpp_link_args = ${@meson_array('LDFLAGS', d)}
 gtkdoc_exe_wrapper = '${B}/gtkdoc-qemuwrapper'
 
 [host_machine]
-- 
2.21.0