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* number of TUNE_CCARGS conditionals is important if we add extra space with each one in "else" branch I'm building for 2 MACHINEs one is cortexa9, second is cortexa8 few months ago we added TUNE_CCARGS[vardepvalue] in bitbake.conf http://git.openembedded.org/openembedded-core/commit/?id=03f1e34ea3ce80931e9c3cd2ab22824f28a7233b which fixed some cases (like mentioned tune-xscale and tune-arm926ejs) where both had unused TUNE_CCARGS when common DEFAULTTUNE was used. with cortexa[89] it's different, because cortexa9 has one extra TUNE_CCARGS TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "cortexa9", "-mtune=cortex-a9", "", d)}" which adds extra *space* even when not used because of '+=' and as result: $ bitbake-diffsigs tmp-eglibc/sstate-diff/1366797730/*/armv7*/adapterbase/*do_configure* basehash changed from f986789fb8fb3579ed6a3492cc8a8d10 to c851b5f838d945ee13072e9ad6725dca Variable TUNE_CCARGS value changed from ' -march=armv7-a -mthumb-interwork -mfloat-abi=softfp -mfpu=neon ' to ' -march=armv7-a -mthumb-interwork -mfloat-abi=softfp -mfpu=neon ' Hash for dependent task gcc-runtime_4.7.bb.do_populate_sysroot changed from bdeabf7a86958b9110b566344b7916de to 2be5618e6bc8c57ec9db5659bf217915 Hash for dependent task eglibc_2.17.bb.do_populate_sysroot changed from b4f40fc62dde684acd0a574532a55360 to 97fcb426603d4a1c1099c0504d2ebf7d Hash for dependent task glib-2.0_2.34.3.bb.do_populate_sysroot changed from fd2f90b83098c34e88d649d70f6ea4f5 to ebd740bb94ea3eb0a914efda6fc82c4a (From OE-Core rev: b7430ff83760ac29079d20dc7c62f498a0a9d55d) Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
27 lines
1.7 KiB
PHP
27 lines
1.7 KiB
PHP
# The instruction set the compiler should use when generating application
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# code. The kernel is always compiled with arm code at present. arm code
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# is the original 32 bit ARM instruction set, thumb code is the 16 bit
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# encoded RISC sub-set. Thumb code is smaller (maybe 70% of the ARM size)
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# but requires more instructions (140% for 70% smaller code) so may be
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# slower.
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TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
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ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
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TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", " ${ARM_THUMB_M_OPT}", "", d)}"
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OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", ":thumb", "", d)}"
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# Note armv7 will hit on armv7a as well
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ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv4", "thumb" ], "t", "", d)}"
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ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv5", "thumb" ], "t", "", d)}"
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ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv6", "thumb" ], "t", "", d)}"
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ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv7", "thumb" ], "t2", "", d)}"
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# Whether to compile with code to allow interworking between the two
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# instruction sets. This allows thumb code to be executed on a primarily
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# arm system and vice versa. It is strongly recommended that DISTROs not
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# turn this off - the actual cost is very small.
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TUNEVALID[no-thumb-interwork] = "Disable mixing of thumb and ARM functions"
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TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", " -mno-thumb-interwork", " -mthumb-interwork", d)}"
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OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", ":thumb-interwork", "", d)}"
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TARGET_CC_KERNEL_ARCH += "-mno-thumb-interwork -marm"
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