updates #2577. For the stm32f105rc BSP variant without this option, sample executables sizes were as follows:
text data bss dec hex filename 61444 1724 63880 127048 1f048 ticker.exe 39397 1480 64104 104981 19a15 minimum.exe 131636 2360 63240 197236 30274 capture.exe 72818 1812 63784 138414 21cae nsecs.exe 123508 2100 63496 189104 2e2b0 paranoia.exe 125564 1748 63848 191160 2eab8 cdtest.exe 59488 1724 63880 125092 1e8a4 base_sp.exe 61168 1748 63848 126764 1ef2c unlimited.exe 69216 1692 63912 134820 20ea4 hello.exe 178492 6500 59400 244392 3baa8 loopback.exe For the stm32f105rc BSP variant with this option, sample executables sizes were as follows: text data bss dec hex filename 56720 1700 63880 122300 1ddbc ticker.exe 23784 1400 64168 89352 15d08 minimum.exe 125096 2328 63272 190696 2e8e8 capture.exe 68410 1788 63816 134014 20b7e nsecs.exe 118480 2076 63528 184084 2cf14 paranoia.exe 119012 1724 63880 184616 2d128 cdtest.exe 54640 1700 63880 120220 1d59c base_sp.exe 55080 1708 63880 120668 1d75c unlimited.exe 62828 1636 63944 128408 1f598 hello.exe 164464 6388 59496 230348 383cc loopback.exe For the stm32f4 BSP variant without this option, sample executables sizes were as follows: text data bss dec hex filename 61420 1724 129416 192560 2f030 ticker.exe 39373 1480 129640 170493 299fd minimum.exe 547160 2004 129160 678324 a59b4 cxx_iostream.exe 390329 5800 125352 521481 7f509 fileio.exe 297452 12616 118824 428892 68b5c pppd.exe 131612 2360 128776 262748 4025c capture.exe 72794 1812 129320 203926 31c96 nsecs.exe 123484 2100 129032 254616 3e298 paranoia.exe 125540 1748 129384 256672 3eaa0 cdtest.exe 59464 1724 129416 190604 2e88c base_sp.exe 61144 1748 129384 192276 2ef14 unlimited.exe 69192 1692 129448 200332 30e8c hello.exe 178468 6500 124936 309904 4ba90 loopback.exe For the stm32f4 BSP variant with this option, sample executables sizes were as follows: text data bss dec hex filename 56640 1700 129416 187756 2dd6c ticker.exe 23704 1400 129704 154808 25cb8 minimum.exe 333792 1956 129192 464940 7182c cxx_iostream.exe 378469 5776 125384 509629 7c6bd fileio.exe 274684 12452 118952 406088 63248 pppd.exe 125016 2328 128808 256152 3e898 capture.exe 68330 1788 129352 199470 30b2e nsecs.exe 118400 2076 129064 249540 3cec4 paranoia.exe 118932 1724 129416 250072 3d0d8 cdtest.exe 54560 1700 129416 185676 2d54c base_sp.exe 55000 1708 129416 186124 2d70c unlimited.exe 62748 1636 129480 193864 2f548 hello.exe 164384 6388 125032 295804 4837c loopback.exe --- c/src/lib/libbsp/arm/stm32f4/make/custom/stm32f4.cfg | 3 +++ 1 file changed, 3 insertions(+) diff --git a/c/src/lib/libbsp/arm/stm32f4/make/custom/stm32f4.cfg b/c/src/lib/libbsp/arm/stm32f4/make/custom/stm32f4.cfg index 1256a52..edca4bf 100644 --- a/c/src/lib/libbsp/arm/stm32f4/make/custom/stm32f4.cfg +++ b/c/src/lib/libbsp/arm/stm32f4/make/custom/stm32f4.cfg @@ -5,3 +5,6 @@ RTEMS_CPU = arm CPU_CFLAGS = -march=armv7-m -mthumb CFLAGS_OPTIMIZE_V = -O2 -g +CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections + +LDFLAGS = -Wl,--gc-sections -- 1.8.3.1 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
