[rtems commit] powerpc/beatnik: Add per-section compilation and linking support.
Joel Sherrill
joel at rtems.org
Sat Jan 23 18:51:11 UTC 2016
Module: rtems
Branch: master
Commit: 3a84377183aee7646fa2f428e6dddd2ff6d002e9
Changeset: http://git.rtems.org/rtems/commit/?id=3a84377183aee7646fa2f428e6dddd2ff6d002e9
Author: Ralph Holmes <ralph at ybden.com>
Date: Sat Jan 23 18:18:41 2016 +0000
powerpc/beatnik: Add per-section compilation and linking support.
The size of the sample executables without this option were:
text data bss dec hex filename
221793 26856 14537 263186 40412 base_sp.exe
209281 25692 14497 249470 3ce7e hello.exe
202033 25072 11269 238374 3a326 minimum.exe
638049 94974 26821 759844 b9824 fileio.exe
243953 28604 14641 287198 461de nsecs.exe
254337 39408 15205 308950 4b6d6 paranoia.exe
224961 27024 14569 266554 4113a ticker.exe
224257 27792 18313 270362 4201a unlimited.exe
973889 215614 22173 1211676 127d1c cxx_iostream.exe
312369 45540 15209 373118 5b17e cdtest.exe
290177 37456 16361 343994 53fba capture.exe
The size of the sample executables with this option enabled were:
text data bss dec hex filename
189633 22528 14517 226678 37576 base_sp.exe
175233 21388 14469 211090 33892 hello.exe
147265 19512 10949 177726 2b63e minimum.exe
595393 88650 26509 710552 ad798 fileio.exe
212561 24252 14621 251434 3d62a nsecs.exe
221953 35032 15181 272166 42726 paranoia.exe
193089 22696 14549 230334 383be ticker.exe
190561 23436 18285 232282 38b5a unlimited.exe
624149 52162 21361 697672 aa548 cxx_iostream.exe
280985 32516 15189 328690 503f2 cdtest.exe
256993 32928 16341 306262 4ac56 capture.exe
---
c/src/lib/libbsp/powerpc/beatnik/make/custom/beatnik.cfg | 3 +++
1 file changed, 3 insertions(+)
diff --git a/c/src/lib/libbsp/powerpc/beatnik/make/custom/beatnik.cfg b/c/src/lib/libbsp/powerpc/beatnik/make/custom/beatnik.cfg
index a50657b..31c8ba6 100644
--- a/c/src/lib/libbsp/powerpc/beatnik/make/custom/beatnik.cfg
+++ b/c/src/lib/libbsp/powerpc/beatnik/make/custom/beatnik.cfg
@@ -23,6 +23,9 @@ CPU_CFLAGS = -mcpu=7400 -D__ppc_generic
# NOTE: some level of -O may be actually required by inline assembler
#CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions
CFLAGS_OPTIMIZE_V = -O2 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
# debug flags: typically none, but at least -O1 is required due to this
# BSP using inlined code
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