[V3] arm-tunes: Remove -march option if mcpu is already added

Submitted by Khem Raj on Jan. 27, 2019, 8:56 p.m. | Patch ID: 158265

Details

Message ID 20190127205615.12825-1-raj.khem@gmail.com
State New
Headers show

Commit Message

Khem Raj Jan. 27, 2019, 8:56 p.m.
tune files which inherit the arch definitions already define appropriate
-mcpu option, which is equivalent of right -march and -mtune combination
and is preferred since gcc is getting stricter and stricter with option
check semantics and can now find incompatible -march and -mcpu options
better with every release. It does internal feature consistency check
and if it finds out discrepency between what -mcpu would expand to as
compared to -march it will flag the options to be incompatible, for
naked eye it sounds wrong but gcc would translate -mcpu to a given
-march internally and it might not match to what we set in these arch
files.

The effects are quite subtle, where this can result in configure test
failing to compile due to these incompatible options and a feature
option getting disabled for a recipe for no reason.

e.g. with gcc9 which can now detect that -mcpu=cortex-a5 and
-march=armv7-a are incompatible, many features in libstdc++ ends up
disabled due to configure check failures e.g. size_t size, ptrdiff_t
sizes, which inturn results in compiling libstdc++ with unwanted
disabled features.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
v2: Only delete -march if -mcpu is set
v3: Stop recursing into arch specific tunes

 .../conf/machine/include/tune-arm1136jf-s.inc |  4 ++-
 meta/conf/machine/include/tune-arm920t.inc    |  4 ++-
 meta/conf/machine/include/tune-arm926ejs.inc  |  4 ++-
 meta/conf/machine/include/tune-arm9tdmi.inc   |  4 ++-
 meta/conf/machine/include/tune-cortexa15.inc  | 27 ++++++++++--------
 meta/conf/machine/include/tune-cortexa17.inc  | 27 ++++++++++--------
 meta/conf/machine/include/tune-cortexa5.inc   | 27 ++++++++++--------
 meta/conf/machine/include/tune-cortexa7.inc   | 27 ++++++++++--------
 meta/conf/machine/include/tune-cortexa8.inc   | 19 +++++++------
 meta/conf/machine/include/tune-cortexa9.inc   | 28 +++++++++++--------
 meta/conf/machine/include/tune-ep9312.inc     |  1 +
 meta/conf/machine/include/tune-iwmmxt.inc     |  5 ++--
 .../machine/include/tune-strongarm1100.inc    |  3 +-
 meta/conf/machine/include/tune-xscale.inc     |  7 +++--
 14 files changed, 110 insertions(+), 77 deletions(-)

--
2.20.1

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diff --git a/meta/conf/machine/include/tune-arm1136jf-s.inc b/meta/conf/machine/include/tune-arm1136jf-s.inc
index c5de63e1cc..d883eba7c9 100644
--- a/meta/conf/machine/include/tune-arm1136jf-s.inc
+++ b/meta/conf/machine/include/tune-arm1136jf-s.inc
@@ -4,8 +4,10 @@  require conf/machine/include/arm/arch-armv6.inc

 TUNEVALID[arm1136jfs] = "Enable arm1136jfs specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'arm1136jfs', ' -mcpu=arm1136jf-s', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'arm1136jfs', 'armv6:', '' ,d)}"

 AVAILTUNES += "arm1136jfs"
 ARMPKGARCH_tune-arm1136jfs = "arm1136jfs"
-TUNE_FEATURES_tune-arm1136jfs = "${TUNE_FEATURES_tune-armv6} arm1136jfs"
+# mcpu is used so don't use armv6 as we don't want march
+TUNE_FEATURES_tune-arm1136jfs = "arm arm1136jfs"
 PACKAGE_EXTRA_ARCHS_tune-arm1136jfs = "${PACKAGE_EXTRA_ARCHS_tune-armv6} arm1136jfs-vfp"
diff --git a/meta/conf/machine/include/tune-arm920t.inc b/meta/conf/machine/include/tune-arm920t.inc
index c6e74b6772..42e8ed2b51 100644
--- a/meta/conf/machine/include/tune-arm920t.inc
+++ b/meta/conf/machine/include/tune-arm920t.inc
@@ -4,8 +4,10 @@  require conf/machine/include/arm/arch-armv4.inc

 TUNEVALID[arm920t] = "Enable arm920t specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'arm920t', ' -mcpu=arm920t', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'arm920t', 'armv4:', '' ,d)}"

 AVAILTUNES += "arm920t"
 ARMPKGARCH_tune-arm920t = "arm920t"
-TUNE_FEATURES_tune-arm920t = "${TUNE_FEATURES_tune-armv4t} arm920t"
+# mcpu is used so don't use armv4t as we don't want march
+TUNE_FEATURES_tune-arm920t = "arm thumb arm920t"
 PACKAGE_EXTRA_ARCHS_tune-arm920t = "${PACKAGE_EXTRA_ARCHS_tune-armv4t} arm920t arm920tt"
diff --git a/meta/conf/machine/include/tune-arm926ejs.inc b/meta/conf/machine/include/tune-arm926ejs.inc
index 81bcda339b..563d53bc4e 100644
--- a/meta/conf/machine/include/tune-arm926ejs.inc
+++ b/meta/conf/machine/include/tune-arm926ejs.inc
@@ -4,8 +4,10 @@  require conf/machine/include/arm/arch-armv5-dsp.inc

 TUNEVALID[arm926ejs] = "Enable arm926ejs specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'arm926ejs', ' -mcpu=arm926ej-s', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'arm926ejs', 'armv5:', '' ,d)}"

 AVAILTUNES += "arm926ejs"
 ARMPKGARCH_tune-arm926ejs = "arm926ejs"
-TUNE_FEATURES_tune-arm926ejs = "${TUNE_FEATURES_tune-armv5te} arm926ejs"
+# mcpu is used so don't use armv5te as we don't want march
+TUNE_FEATURES_tune-arm926ejs = "arm thumb dsp arm926ejs"
 PACKAGE_EXTRA_ARCHS_tune-arm926ejs = "${PACKAGE_EXTRA_ARCHS_tune-armv5te} arm926ejste arm926ejse"
diff --git a/meta/conf/machine/include/tune-arm9tdmi.inc b/meta/conf/machine/include/tune-arm9tdmi.inc
index e9c2b8fcf5..e03a8b86a0 100644
--- a/meta/conf/machine/include/tune-arm9tdmi.inc
+++ b/meta/conf/machine/include/tune-arm9tdmi.inc
@@ -4,8 +4,10 @@  require conf/machine/include/arm/arch-armv4.inc

 TUNEVALID[arm9tdmi] = "Enable arm9tdmi specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'arm9tdmi', ' -mcpu=arm9tdmi', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'arm9tdmi', 'armv4:', '' ,d)}"

 AVAILTUNES += "arm9tdmi"
 ARMPKGARCH_tune-arm9tdmi = "arm9tdmi"
-TUNE_FEATURES_tune-arm9tdmi = "${TUNE_FEATURES_tune-armv4t} arm9tdmi"
+# mcpu is used so don't use armv4t as we don't want march
+TUNE_FEATURES_tune-arm9tdmi = "arm thumb arm9tdmi"
 PACKAGE_EXTRA_ARCHS_tune-arm9tdmi = "${PACKAGE_EXTRA_ARCHS_tune-armv4t} arm9tdmit"
diff --git a/meta/conf/machine/include/tune-cortexa15.inc b/meta/conf/machine/include/tune-cortexa15.inc
index 25e99f93d7..d53403af35 100644
--- a/meta/conf/machine/include/tune-cortexa15.inc
+++ b/meta/conf/machine/include/tune-cortexa15.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7ve.inc

 TUNEVALID[cortexa15] = "Enable Cortex-A15 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa15', ' -mcpu=cortex-a15', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa15', 'armv7ve:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa15 cortexa15t cortexa15-neon cortexa15t-neon cortexa15-neon-vfpv4 cortexa15t-neon-vfpv4"
@@ -13,12 +14,13 @@  ARMPKGARCH_tune-cortexa15-neon        = "cortexa15"
 ARMPKGARCH_tune-cortexa15t-neon       = "cortexa15"
 ARMPKGARCH_tune-cortexa15-neon-vfpv4  = "cortexa15"
 ARMPKGARCH_tune-cortexa15t-neon-vfpv4 = "cortexa15"
-TUNE_FEATURES_tune-cortexa15             = "${TUNE_FEATURES_tune-armv7ve} cortexa15"
-TUNE_FEATURES_tune-cortexa15t            = "${TUNE_FEATURES_tune-armv7vet} cortexa15"
-TUNE_FEATURES_tune-cortexa15-neon        = "${TUNE_FEATURES_tune-armv7ve-neon} cortexa15"
-TUNE_FEATURES_tune-cortexa15t-neon       = "${TUNE_FEATURES_tune-armv7vet-neon} cortexa15"
-TUNE_FEATURES_tune-cortexa15-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7ve-neon-vfpv4} cortexa15"
-TUNE_FEATURES_tune-cortexa15t-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vet-neon-vfpv4} cortexa15"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa15             = "arm vfp cortexa15"
+TUNE_FEATURES_tune-cortexa15t            = "${TUNE_FEATURES_tune-cortexa15} thumb"
+TUNE_FEATURES_tune-cortexa15-neon        = "${TUNE_FEATURES_tune-cortexa15} neon"
+TUNE_FEATURES_tune-cortexa15t-neon       = "${TUNE_FEATURES_tune-cortexa15-neon} thumb"
+TUNE_FEATURES_tune-cortexa15-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa15-neon} vfpv4"
+TUNE_FEATURES_tune-cortexa15t-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa15-neon-vfpv4} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve} cortexa15-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vet} cortexa15-vfp cortexa15t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve-neon} cortexa15-vfp cortexa15-neon"
@@ -34,12 +36,13 @@  ARMPKGARCH_tune-cortexa15hf-neon        = "cortexa15"
 ARMPKGARCH_tune-cortexa15thf-neon       = "cortexa15"
 ARMPKGARCH_tune-cortexa15hf-neon-vfpv4  = "cortexa15"
 ARMPKGARCH_tune-cortexa15thf-neon-vfpv4 = "cortexa15"
-TUNE_FEATURES_tune-cortexa15hf             = "${TUNE_FEATURES_tune-armv7vehf} cortexa15"
-TUNE_FEATURES_tune-cortexa15thf            = "${TUNE_FEATURES_tune-armv7vethf} cortexa15"
-TUNE_FEATURES_tune-cortexa15hf-neon        = "${TUNE_FEATURES_tune-armv7vehf-neon} cortexa15"
-TUNE_FEATURES_tune-cortexa15thf-neon       = "${TUNE_FEATURES_tune-armv7vethf-neon} cortexa15"
-TUNE_FEATURES_tune-cortexa15hf-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7vehf-neon-vfpv4} cortexa15"
-TUNE_FEATURES_tune-cortexa15thf-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vethf-neon-vfpv4} cortexa15"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa15hf             = "${TUNE_FEATURES_tune-cortexa15} callconvention-hard"
+TUNE_FEATURES_tune-cortexa15thf            = "${TUNE_FEATURES_tune-cortexa15t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa15hf-neon        = "${TUNE_FEATURES_tune-cortexa15-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa15thf-neon       = "${TUNE_FEATURES_tune-cortexa15t-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa15hf-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa15-neon-vfpv4} callconvention-hard"
+TUNE_FEATURES_tune-cortexa15thf-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa15t-neon-vfpv4} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf} cortexa15hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vethf} cortexa15hf-vfp cortexa15t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa15hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf-neon} cortexa15hf-vfp cortexa15hf-neon"
diff --git a/meta/conf/machine/include/tune-cortexa17.inc b/meta/conf/machine/include/tune-cortexa17.inc
index 40392f9bcc..3ffc02bf9f 100644
--- a/meta/conf/machine/include/tune-cortexa17.inc
+++ b/meta/conf/machine/include/tune-cortexa17.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7ve.inc

 TUNEVALID[cortexa17] = "Enable Cortex-A17 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa17', ' -mcpu=cortex-a17', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa17', 'armv7ve:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa17 cortexa17t cortexa17-neon cortexa17t-neon cortexa17-neon-vfpv4 cortexa17t-neon-vfpv4"
@@ -13,12 +14,13 @@  ARMPKGARCH_tune-cortexa17-neon        = "cortexa17"
 ARMPKGARCH_tune-cortexa17t-neon       = "cortexa17"
 ARMPKGARCH_tune-cortexa17-neon-vfpv4  = "cortexa17"
 ARMPKGARCH_tune-cortexa17t-neon-vfpv4 = "cortexa17"
-TUNE_FEATURES_tune-cortexa17             = "${TUNE_FEATURES_tune-armv7ve} cortexa17"
-TUNE_FEATURES_tune-cortexa17t            = "${TUNE_FEATURES_tune-armv7vet} cortexa17"
-TUNE_FEATURES_tune-cortexa17-neon        = "${TUNE_FEATURES_tune-armv7ve-neon} cortexa17"
-TUNE_FEATURES_tune-cortexa17t-neon       = "${TUNE_FEATURES_tune-armv7vet-neon} cortexa17"
-TUNE_FEATURES_tune-cortexa17-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7ve-neon-vfpv4} cortexa17"
-TUNE_FEATURES_tune-cortexa17t-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vet-neon-vfpv4} cortexa17"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa17             = "arm vfp cortexa17"
+TUNE_FEATURES_tune-cortexa17t            = "${TUNE_FEATURES_tune-cortexa17} thumb"
+TUNE_FEATURES_tune-cortexa17-neon        = "${TUNE_FEATURES_tune-cortexa17} neon"
+TUNE_FEATURES_tune-cortexa17t-neon       = "${TUNE_FEATURES_tune-cortexa17-neon} thumb"
+TUNE_FEATURES_tune-cortexa17-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa17-neon} vfpv4"
+TUNE_FEATURES_tune-cortexa17t-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa17-neon-vfpv4} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve} cortexa17-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vet} cortexa17-vfp cortexa17t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve-neon} cortexa17-vfp cortexa17-neon"
@@ -34,12 +36,13 @@  ARMPKGARCH_tune-cortexa17hf-neon        = "cortexa17"
 ARMPKGARCH_tune-cortexa17thf-neon       = "cortexa17"
 ARMPKGARCH_tune-cortexa17hf-neon-vfpv4  = "cortexa17"
 ARMPKGARCH_tune-cortexa17thf-neon-vfpv4 = "cortexa17"
-TUNE_FEATURES_tune-cortexa17hf             = "${TUNE_FEATURES_tune-armv7vehf} cortexa17"
-TUNE_FEATURES_tune-cortexa17thf            = "${TUNE_FEATURES_tune-armv7vethf} cortexa17"
-TUNE_FEATURES_tune-cortexa17hf-neon        = "${TUNE_FEATURES_tune-armv7vehf-neon} cortexa17"
-TUNE_FEATURES_tune-cortexa17thf-neon       = "${TUNE_FEATURES_tune-armv7vethf-neon} cortexa17"
-TUNE_FEATURES_tune-cortexa17hf-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7vehf-neon-vfpv4} cortexa17"
-TUNE_FEATURES_tune-cortexa17thf-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vethf-neon-vfpv4} cortexa17"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa17hf             = "${TUNE_FEATURES_tune-cortexa17} callconvention-hard"
+TUNE_FEATURES_tune-cortexa17thf            = "${TUNE_FEATURES_tune-cortexa17t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa17hf-neon        = "${TUNE_FEATURES_tune-cortexa17-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa17thf-neon       = "${TUNE_FEATURES_tune-cortexa17t-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa17hf-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa17-neon-vfpv4} callconvention-hard"
+TUNE_FEATURES_tune-cortexa17thf-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa17t-neon-vfpv4} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf} cortexa17hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vethf} cortexa17hf-vfp cortexa17t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa17hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf-neon} cortexa17hf-vfp cortexa17hf-neon"
diff --git a/meta/conf/machine/include/tune-cortexa5.inc b/meta/conf/machine/include/tune-cortexa5.inc
index e9eddb407f..496739e454 100644
--- a/meta/conf/machine/include/tune-cortexa5.inc
+++ b/meta/conf/machine/include/tune-cortexa5.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7a.inc

 TUNEVALID[cortexa5] = "Enable Cortex-A5 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa5', ' -mcpu=cortex-a5', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa5', 'armv7a:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa5 cortexa5t cortexa5-neon cortexa5t-neon cortexa5-neon-vfpv4 cortexa5t-neon-vfpv4"
@@ -13,12 +14,13 @@  ARMPKGARCH_tune-cortexa5-neon        = "cortexa5"
 ARMPKGARCH_tune-cortexa5t-neon       = "cortexa5"
 ARMPKGARCH_tune-cortexa5-neon-vfpv4  = "cortexa5"
 ARMPKGARCH_tune-cortexa5t-neon-vfpv4 = "cortexa5"
-TUNE_FEATURES_tune-cortexa5             = "${TUNE_FEATURES_tune-armv7a} cortexa5"
-TUNE_FEATURES_tune-cortexa5t            = "${TUNE_FEATURES_tune-armv7at} cortexa5"
-TUNE_FEATURES_tune-cortexa5-neon        = "${TUNE_FEATURES_tune-armv7a-neon} cortexa5"
-TUNE_FEATURES_tune-cortexa5t-neon       = "${TUNE_FEATURES_tune-armv7at-neon} cortexa5"
-TUNE_FEATURES_tune-cortexa5-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7a-neon-vfpv4} cortexa5"
-TUNE_FEATURES_tune-cortexa5t-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7at-neon-vfpv4} cortexa5"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa5             = "arm vfp cortexa5"
+TUNE_FEATURES_tune-cortexa5t            = "${TUNE_FEATURES_tune-cortexa5} thumb"
+TUNE_FEATURES_tune-cortexa5-neon        = "${TUNE_FEATURES_tune-cortexa5} neon"
+TUNE_FEATURES_tune-cortexa5t-neon       = "${TUNE_FEATURES_tune-cortexa5-neon} thumb"
+TUNE_FEATURES_tune-cortexa5-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa5-neon} vfpv4"
+TUNE_FEATURES_tune-cortexa5t-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa5-neon-vfpv4} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5             = "${PACKAGE_EXTRA_ARCHS_tune-armv7a} cortexa5-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7at} cortexa5-vfp cortexa5t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7a-neon} cortexa5-vfp cortexa5-neon"
@@ -34,12 +36,13 @@  ARMPKGARCH_tune-cortexa5hf-neon        = "cortexa5"
 ARMPKGARCH_tune-cortexa5thf-neon       = "cortexa5"
 ARMPKGARCH_tune-cortexa5hf-neon-vfpv4  = "cortexa5"
 ARMPKGARCH_tune-cortexa5thf-neon-vfpv4 = "cortexa5"
-TUNE_FEATURES_tune-cortexa5hf             = "${TUNE_FEATURES_tune-armv7ahf} cortexa5"
-TUNE_FEATURES_tune-cortexa5thf            = "${TUNE_FEATURES_tune-armv7athf} cortexa5"
-TUNE_FEATURES_tune-cortexa5hf-neon        = "${TUNE_FEATURES_tune-armv7ahf-neon} cortexa5"
-TUNE_FEATURES_tune-cortexa5thf-neon       = "${TUNE_FEATURES_tune-armv7athf-neon} cortexa5"
-TUNE_FEATURES_tune-cortexa5hf-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7ahf-neon-vfpv4} cortexa5"
-TUNE_FEATURES_tune-cortexa5thf-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7athf-neon-vfpv4} cortexa5"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa5hf             = "${TUNE_FEATURES_tune-cortexa5} callconvention-hard"
+TUNE_FEATURES_tune-cortexa5thf            = "${TUNE_FEATURES_tune-cortexa5t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa5hf-neon        = "${TUNE_FEATURES_tune-cortexa5-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa5thf-neon       = "${TUNE_FEATURES_tune-cortexa5t-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa5hf-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa5-neon-vfpv4} callconvention-hard"
+TUNE_FEATURES_tune-cortexa5thf-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa5t-neon-vfpv4} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf} cortexa5hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7athf} cortexa5hf-vfp cortexa5t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa5hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf-neon} cortexa5hf-vfp cortexa5hf-neon"
diff --git a/meta/conf/machine/include/tune-cortexa7.inc b/meta/conf/machine/include/tune-cortexa7.inc
index 52415d9c8b..34a77b4788 100644
--- a/meta/conf/machine/include/tune-cortexa7.inc
+++ b/meta/conf/machine/include/tune-cortexa7.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7ve.inc

 TUNEVALID[cortexa7] = "Enable Cortex-A7 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa7', ' -mcpu=cortex-a7', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa7', 'armv7ve:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa7 cortexa7t cortexa7-neon cortexa7t-neon cortexa7-neon-vfpv4 cortexa7t-neon-vfpv4"
@@ -13,12 +14,13 @@  ARMPKGARCH_tune-cortexa7-neon        = "cortexa7"
 ARMPKGARCH_tune-cortexa7t-neon       = "cortexa7"
 ARMPKGARCH_tune-cortexa7-neon-vfpv4  = "cortexa7"
 ARMPKGARCH_tune-cortexa7t-neon-vfpv4 = "cortexa7"
-TUNE_FEATURES_tune-cortexa7             = "${TUNE_FEATURES_tune-armv7ve} cortexa7"
-TUNE_FEATURES_tune-cortexa7t            = "${TUNE_FEATURES_tune-armv7vet} cortexa7"
-TUNE_FEATURES_tune-cortexa7-neon        = "${TUNE_FEATURES_tune-armv7ve-neon} cortexa7"
-TUNE_FEATURES_tune-cortexa7t-neon       = "${TUNE_FEATURES_tune-armv7vet-neon} cortexa7"
-TUNE_FEATURES_tune-cortexa7-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7ve-neon-vfpv4} cortexa7"
-TUNE_FEATURES_tune-cortexa7t-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vet-neon-vfpv4} cortexa7"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa7             = "arm vfp cortexa7"
+TUNE_FEATURES_tune-cortexa7t            = "${TUNE_FEATURES_tune-cortexa7} thumb"
+TUNE_FEATURES_tune-cortexa7-neon        = "${TUNE_FEATURES_tune-cortexa7} neon"
+TUNE_FEATURES_tune-cortexa7t-neon       = "${TUNE_FEATURES_tune-cortexa7-neon} thumb"
+TUNE_FEATURES_tune-cortexa7-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa7-neon} vfpv4"
+TUNE_FEATURES_tune-cortexa7t-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa7-neon-vfpv4} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve} cortexa7-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vet} cortexa7-vfp cortexa7t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ve-neon} cortexa7-vfp cortexa7-neon"
@@ -34,12 +36,13 @@  ARMPKGARCH_tune-cortexa7hf-neon        = "cortexa7"
 ARMPKGARCH_tune-cortexa7thf-neon       = "cortexa7"
 ARMPKGARCH_tune-cortexa7hf-neon-vfpv4  = "cortexa7"
 ARMPKGARCH_tune-cortexa7thf-neon-vfpv4 = "cortexa7"
-TUNE_FEATURES_tune-cortexa7hf             = "${TUNE_FEATURES_tune-armv7vehf} cortexa7"
-TUNE_FEATURES_tune-cortexa7thf            = "${TUNE_FEATURES_tune-armv7vethf} cortexa7"
-TUNE_FEATURES_tune-cortexa7hf-neon        = "${TUNE_FEATURES_tune-armv7vehf-neon} cortexa7"
-TUNE_FEATURES_tune-cortexa7thf-neon       = "${TUNE_FEATURES_tune-armv7vethf-neon} cortexa7"
-TUNE_FEATURES_tune-cortexa7hf-neon-vfpv4  = "${TUNE_FEATURES_tune-armv7vehf-neon-vfpv4} cortexa7"
-TUNE_FEATURES_tune-cortexa7thf-neon-vfpv4 = "${TUNE_FEATURES_tune-armv7vethf-neon-vfpv4} cortexa7"
+# mcpu is used so don't use armv7ve as we don't want march
+TUNE_FEATURES_tune-cortexa7hf             = "${TUNE_FEATURES_tune-cortexa7} callconvention-hard"
+TUNE_FEATURES_tune-cortexa7thf            = "${TUNE_FEATURES_tune-cortexa7t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa7hf-neon        = "${TUNE_FEATURES_tune-cortexa7-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa7thf-neon       = "${TUNE_FEATURES_tune-cortexa7t-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa7hf-neon-vfpv4  = "${TUNE_FEATURES_tune-cortexa7-neon-vfpv4} callconvention-hard"
+TUNE_FEATURES_tune-cortexa7thf-neon-vfpv4 = "${TUNE_FEATURES_tune-cortexa7t-neon-vfpv4} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf} cortexa7hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7vethf} cortexa7hf-vfp cortexa7t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa7hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7vehf-neon} cortexa7hf-vfp cortexa7hf-neon"
diff --git a/meta/conf/machine/include/tune-cortexa8.inc b/meta/conf/machine/include/tune-cortexa8.inc
index 8ee8de97f1..6551ba4952 100644
--- a/meta/conf/machine/include/tune-cortexa8.inc
+++ b/meta/conf/machine/include/tune-cortexa8.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7a.inc

 TUNEVALID[cortexa8] = "Enable Cortex-A8 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa8', ' -mcpu=cortex-a8', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa8', 'armv7a:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa8 cortexa8t cortexa8-neon cortexa8t-neon"
@@ -11,10 +12,11 @@  ARMPKGARCH_tune-cortexa8             = "cortexa8"
 ARMPKGARCH_tune-cortexa8t            = "cortexa8"
 ARMPKGARCH_tune-cortexa8-neon        = "cortexa8"
 ARMPKGARCH_tune-cortexa8t-neon       = "cortexa8"
-TUNE_FEATURES_tune-cortexa8             = "${TUNE_FEATURES_tune-armv7a} cortexa8"
-TUNE_FEATURES_tune-cortexa8t            = "${TUNE_FEATURES_tune-armv7at} cortexa8"
-TUNE_FEATURES_tune-cortexa8-neon        = "${TUNE_FEATURES_tune-armv7a-neon} cortexa8"
-TUNE_FEATURES_tune-cortexa8t-neon       = "${TUNE_FEATURES_tune-armv7at-neon} cortexa8"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa8             = "arm vfp cortexa8"
+TUNE_FEATURES_tune-cortexa8t            = "${TUNE_FEATURES_tune-cortexa8} thumb"
+TUNE_FEATURES_tune-cortexa8-neon        = "${TUNE_FEATURES_tune-cortexa8} neon"
+TUNE_FEATURES_tune-cortexa8t-neon       = "${TUNE_FEATURES_tune-cortexa8-neon} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8             = "${PACKAGE_EXTRA_ARCHS_tune-armv7a} cortexa8-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7at} cortexa8-vfp cortexa8t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7a-neon} cortexa8-vfp cortexa8-neon"
@@ -26,10 +28,11 @@  ARMPKGARCH_tune-cortexa8hf             = "cortexa8"
 ARMPKGARCH_tune-cortexa8thf            = "cortexa8"
 ARMPKGARCH_tune-cortexa8hf-neon        = "cortexa8"
 ARMPKGARCH_tune-cortexa8thf-neon       = "cortexa8"
-TUNE_FEATURES_tune-cortexa8hf             = "${TUNE_FEATURES_tune-armv7ahf} cortexa8"
-TUNE_FEATURES_tune-cortexa8thf            = "${TUNE_FEATURES_tune-armv7athf} cortexa8"
-TUNE_FEATURES_tune-cortexa8hf-neon        = "${TUNE_FEATURES_tune-armv7ahf-neon} cortexa8"
-TUNE_FEATURES_tune-cortexa8thf-neon       = "${TUNE_FEATURES_tune-armv7athf-neon} cortexa8"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa8hf             = "${TUNE_FEATURES_tune-cortexa8} callconvention-hard"
+TUNE_FEATURES_tune-cortexa8thf            = "${TUNE_FEATURES_tune-cortexa8t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa8hf-neon        = "${TUNE_FEATURES_tune-cortexa8-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa8thf-neon       = "${TUNE_FEATURES_tune-cortexa8t-neon} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf} cortexa8hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7athf} cortexa8hf-vfp cortexa8t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa8hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf-neon} cortexa8hf-vfp cortexa8hf-neon"
diff --git a/meta/conf/machine/include/tune-cortexa9.inc b/meta/conf/machine/include/tune-cortexa9.inc
index 0cf323c960..ecc7908cd7 100644
--- a/meta/conf/machine/include/tune-cortexa9.inc
+++ b/meta/conf/machine/include/tune-cortexa9.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv7a.inc

 TUNEVALID[cortexa9] = "Enable Cortex-A9 specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexa9', ' -mcpu=cortex-a9', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'cortexa9', 'armv7a:', '' ,d)}"

 # Little Endian base configs
 AVAILTUNES += "cortexa9 cortexa9t cortexa9-neon cortexa9t-neon"
@@ -11,10 +12,11 @@  ARMPKGARCH_tune-cortexa9             = "cortexa9"
 ARMPKGARCH_tune-cortexa9t            = "cortexa9"
 ARMPKGARCH_tune-cortexa9-neon        = "cortexa9"
 ARMPKGARCH_tune-cortexa9t-neon       = "cortexa9"
-TUNE_FEATURES_tune-cortexa9             = "${TUNE_FEATURES_tune-armv7a} cortexa9"
-TUNE_FEATURES_tune-cortexa9t            = "${TUNE_FEATURES_tune-armv7at} cortexa9"
-TUNE_FEATURES_tune-cortexa9-neon        = "${TUNE_FEATURES_tune-armv7a-neon} cortexa9"
-TUNE_FEATURES_tune-cortexa9t-neon       = "${TUNE_FEATURES_tune-armv7at-neon} cortexa9"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa9             = "arm vfp cortexa9"
+TUNE_FEATURES_tune-cortexa9t            = "${TUNE_FEATURES_tune-cortexa9} thumb"
+TUNE_FEATURES_tune-cortexa9-neon        = "${TUNE_FEATURES_tune-cortexa9} neon"
+TUNE_FEATURES_tune-cortexa9t-neon       = "${TUNE_FEATURES_tune-cortexa9-neon} thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9             = "${PACKAGE_EXTRA_ARCHS_tune-armv7a} cortexa9-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9t            = "${PACKAGE_EXTRA_ARCHS_tune-armv7at} cortexa9-vfp cortexa9t2-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7a-neon} cortexa9-vfp cortexa9-neon"
@@ -26,10 +28,11 @@  ARMPKGARCH_tune-cortexa9hf             = "cortexa9"
 ARMPKGARCH_tune-cortexa9thf            = "cortexa9"
 ARMPKGARCH_tune-cortexa9hf-neon        = "cortexa9"
 ARMPKGARCH_tune-cortexa9thf-neon       = "cortexa9"
-TUNE_FEATURES_tune-cortexa9hf             = "${TUNE_FEATURES_tune-armv7ahf} cortexa9"
-TUNE_FEATURES_tune-cortexa9thf            = "${TUNE_FEATURES_tune-armv7athf} cortexa9"
-TUNE_FEATURES_tune-cortexa9hf-neon        = "${TUNE_FEATURES_tune-armv7ahf-neon} cortexa9"
-TUNE_FEATURES_tune-cortexa9thf-neon       = "${TUNE_FEATURES_tune-armv7athf-neon} cortexa9"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa9hf             = "${TUNE_FEATURES_tune-cortexa9} callconvention-hard"
+TUNE_FEATURES_tune-cortexa9thf            = "${TUNE_FEATURES_tune-cortexa9t} callconvention-hard"
+TUNE_FEATURES_tune-cortexa9hf-neon        = "${TUNE_FEATURES_tune-cortexa9-neon} callconvention-hard"
+TUNE_FEATURES_tune-cortexa9thf-neon       = "${TUNE_FEATURES_tune-cortexa9t-neon} callconvention-hard"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9hf             = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf} cortexa9hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9thf            = "${PACKAGE_EXTRA_ARCHS_tune-armv7athf} cortexa9hf-vfp cortexa9t2hf-vfp"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9hf-neon        = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf-neon} cortexa9hf-vfp cortexa9hf-neon"
@@ -41,10 +44,11 @@  ARMPKGARCH_tune-cortexa9-vfpv3          = "cortexa9"
 ARMPKGARCH_tune-cortexa9t-vfpv3         = "cortexa9"
 ARMPKGARCH_tune-cortexa9hf-vfpv3        = "cortexa9"
 ARMPKGARCH_tune-cortexa9thf-vfpv3       = "cortexa9"
-TUNE_FEATURES_tune-cortexa9-vfpv3           = "${TUNE_FEATURES_tune-armv7a-vfpv3} cortexa9"
-TUNE_FEATURES_tune-cortexa9t-vfpv3          = "${TUNE_FEATURES_tune-armv7at-vfpv3} cortexa9"
-TUNE_FEATURES_tune-cortexa9hf-vfpv3         = "${TUNE_FEATURES_tune-armv7ahf-vfpv3} cortexa9"
-TUNE_FEATURES_tune-cortexa9thf-vfpv3        = "${TUNE_FEATURES_tune-armv7athf-vfpv3} cortexa9"
+# mcpu is used so don't use armv7a as we don't want march
+TUNE_FEATURES_tune-cortexa9-vfpv3           = "${TUNE_FEATURES_tune-cortexa9} vfpv3"
+TUNE_FEATURES_tune-cortexa9t-vfpv3          = "${TUNE_FEATURES_tune-cortexa9t} vfpv3"
+TUNE_FEATURES_tune-cortexa9hf-vfpv3         = "${TUNE_FEATURES_tune-cortexa9hf} vfpv3"
+TUNE_FEATURES_tune-cortexa9thf-vfpv3        = "${TUNE_FEATURES_tune-cortexa9thf} vfpv3"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9-vfpv3           = "${PACKAGE_EXTRA_ARCHS_tune-armv7a-vfpv3} cortexa9-vfp cortexa9-vfpv3"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9t-vfpv3          = "${PACKAGE_EXTRA_ARCHS_tune-armv7at-vfpv3} cortexa9-vfp cortexa9-vfpv3 cortexa9t2-vfp cortexa9t2-vfpv3"
 PACKAGE_EXTRA_ARCHS_tune-cortexa9hf-vfpv3         = "${PACKAGE_EXTRA_ARCHS_tune-armv7ahf-vfpv3} cortexa9hf-vfp cortexa9hf-vfpv3"
diff --git a/meta/conf/machine/include/tune-ep9312.inc b/meta/conf/machine/include/tune-ep9312.inc
index 84ca528d6d..4d92821628 100644
--- a/meta/conf/machine/include/tune-ep9312.inc
+++ b/meta/conf/machine/include/tune-ep9312.inc
@@ -4,6 +4,7 @@  require conf/machine/include/arm/arch-armv4.inc

 TUNEVALID[ep9312] = "Enable Intel PXA27x specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'ep9312', ' -march=ep9312 -mcpu=ep9312', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'ep9312', 'armv4:', '' ,d)}"

 AVAILTUNES += "ep9312"
 ARMPKGARCH_tune-ep9312 = "ep9312"
diff --git a/meta/conf/machine/include/tune-iwmmxt.inc b/meta/conf/machine/include/tune-iwmmxt.inc
index f27423cb2e..55b6a65024 100644
--- a/meta/conf/machine/include/tune-iwmmxt.inc
+++ b/meta/conf/machine/include/tune-iwmmxt.inc
@@ -1,4 +1,4 @@ 
-# Configurations for the Intel PXA27x Appications Processor Family.
+# Configurations for the Intel PXA27x Appications Processor Family.
 # Please use tune-xscale for PXA255/PXA26x based processors.

 DEFAULTTUNE ?= "iwmmxt"
@@ -6,7 +6,8 @@  DEFAULTTUNE ?= "iwmmxt"
 require conf/machine/include/arm/arch-armv5-dsp.inc

 TUNEVALID[iwmmxt] = "Enable Intel PXA27x specific processor optimizations"
-TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'iwmmxt', ' -march=iwmmxt -mcpu=iwmmxt', '', d)}"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'iwmmxt', ' -mcpu=iwmmxt', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'iwmmxt', 'armv5:', '' ,d)}"

 AVAILTUNES += "iwmmxt"
 ARMPKGARCH_tune-iwmmxt = "iwmmxt"
diff --git a/meta/conf/machine/include/tune-strongarm1100.inc b/meta/conf/machine/include/tune-strongarm1100.inc
index 80cfb8ab8a..e978e925d2 100644
--- a/meta/conf/machine/include/tune-strongarm1100.inc
+++ b/meta/conf/machine/include/tune-strongarm1100.inc
@@ -4,8 +4,9 @@  require conf/machine/include/arm/arch-armv4.inc

 TUNEVALID[strongarm] = "Enable Strongarm 1100 series processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'strongarm', ' -mcpu=strongarm1100', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'strongarm', 'armv4:', '' ,d)}"

 AVAILTUNES += "strongarm"
 ARMPKGARCH_tune-strongarm = "strongarm"
-TUNE_FEATURES_tune-strongarm = "${TUNE_FEATURES_tune-armv4} strongarm"
+TUNE_FEATURES_tune-strongarm = "arm strongarm"
 PACKAGE_EXTRA_ARCHS_tune-strongarm = "${PACKAGE_EXTRA_ARCHS_tune-armv4} strongarm"
diff --git a/meta/conf/machine/include/tune-xscale.inc b/meta/conf/machine/include/tune-xscale.inc
index 0d07333955..19d5e13e61 100644
--- a/meta/conf/machine/include/tune-xscale.inc
+++ b/meta/conf/machine/include/tune-xscale.inc
@@ -4,13 +4,16 @@  require conf/machine/include/arm/arch-armv5-dsp.inc

 TUNEVALID[xscale] = "Enable PXA255/PXA26x Xscale specific processor optimizations"
 TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'xscale', ' -mcpu=xscale', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'xscale', 'armv5:', '' ,d)}"

 AVAILTUNES += "xscale"
 ARMPKGARCH_tune-xscale = "xscale"
-TUNE_FEATURES_tune-xscale = "${TUNE_FEATURES_tune-armv5te} xscale"
+# mcpu is used so don't use armv5te as we don't want march
+TUNE_FEATURES_tune-xscale = "arm thumb dsp xscale"
 PACKAGE_EXTRA_ARCHS_tune-xscale = "${PACKAGE_EXTRA_ARCHS_tune-armv5te} xscale xscalet xscalee xscalete"

 AVAILTUNES += "xscale-be"
 ARMPKGARCH_tune-xscale-be = "xscale"
-TUNE_FEATURES_tune-xscale-be = "${TUNE_FEATURES_tune-armv5teb} xscale bigendian"
+# mcpu is used so don't use armv5te as we don't want march
+TUNE_FEATURES_tune-xscale-be = "${TUNE_FEATURES_tune-xscale} bigendian"
 PACKAGE_EXTRA_ARCHS_tune-xscale-be = "${PACKAGE_EXTRA_ARCHS_tune-armv5teb} xscaleb xscaletb xscaleeb xscaleteb"

Comments

Mark Hatle Jan. 29, 2019, 4:40 a.m.
I reviewed this patch set.  It looks good to me.  Moving to -mcpu makes sense,
as well as manually specifying the override feature info when necessary.

--Mark

On 1/28/19 4:56 AM, Khem Raj wrote:
> tune files which inherit the arch definitions already define appropriate
> -mcpu option, which is equivalent of right -march and -mtune combination
> and is preferred since gcc is getting stricter and stricter with option
> check semantics and can now find incompatible -march and -mcpu options
> better with every release. It does internal feature consistency check
> and if it finds out discrepency between what -mcpu would expand to as
> compared to -march it will flag the options to be incompatible, for
> naked eye it sounds wrong but gcc would translate -mcpu to a given
> -march internally and it might not match to what we set in these arch
> files.
> 
> The effects are quite subtle, where this can result in configure test
> failing to compile due to these incompatible options and a feature
> option getting disabled for a recipe for no reason.
> 
> e.g. with gcc9 which can now detect that -mcpu=cortex-a5 and
> -march=armv7-a are incompatible, many features in libstdc++ ends up
> disabled due to configure check failures e.g. size_t size, ptrdiff_t
> sizes, which inturn results in compiling libstdc++ with unwanted
> disabled features.
> 
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
> v2: Only delete -march if -mcpu is set
> v3: Stop recursing into arch specific tunes