[rtems commit] m68k/mcf5206elite: Add per-section compilation and linking support.
Joel Sherrill
joel at rtems.org
Sat Jan 23 02:52:51 UTC 2016
Module: rtems
Branch: master
Commit: 6bfd391b8618f72f43dba6f92d6ade3934255bb9
Changeset: http://git.rtems.org/rtems/commit/?id=6bfd391b8618f72f43dba6f92d6ade3934255bb9
Author: Ralph Holmes <ralph at ybden.com>
Date: Sat Jan 23 02:07:35 2016 +0000
m68k/mcf5206elite: Add per-section compilation and linking support.
The size of the sample executables without this option were:
text data bss dec hex filename
95264 1680 8928 105872 19d90 base_sp.exe
109184 1648 8512 119344 1d230 hello.exe
32608 1216 4912 38736 9750 minimum.exe
575040 5584 20400 601024 92bc0 fileio.exe
114528 1760 9024 125312 1e980 nsecs.exe
194864 2048 9520 206432 32660 paranoia.exe
99120 1680 8944 109744 1acb0 ticker.exe
97520 1712 12352 111584 1b3e0 unlimited.exe
869136 21920 16016 907072 dd740 cxx_iostream.exe
203264 2256 9104 214624 34660 cdtest.exe
197120 2176 10752 210048 33480 capture.exe
The size of the sample executables with this option enabled were:
text data bss dec hex filename
86768 1632 8864 97264 17bf0 base_sp.exe
99776 1584 8448 109808 1acf0 hello.exe
23808 1168 4864 29840 7490 minimum.exe
557808 5552 20080 583440 8e710 fileio.exe
107168 1728 8976 117872 1cc70 nsecs.exe
186032 2016 9456 197504 30380 paranoia.exe
91408 1632 8896 101936 18e30 ticker.exe
88336 1648 12288 102272 18f80 unlimited.exe
178768 2192 8752 189712 2e510 cxx_iostream.exe
186528 2128 9008 197664 30420 cdtest.exe
186640 2112 10688 199440 30b10 capture.exe
---
c/src/lib/libbsp/m68k/mcf5206elite/make/custom/mcf5206elite.cfg | 3 +++
1 file changed, 3 insertions(+)
diff --git a/c/src/lib/libbsp/m68k/mcf5206elite/make/custom/mcf5206elite.cfg b/c/src/lib/libbsp/m68k/mcf5206elite/make/custom/mcf5206elite.cfg
index 7d48dab..b150e04 100644
--- a/c/src/lib/libbsp/m68k/mcf5206elite/make/custom/mcf5206elite.cfg
+++ b/c/src/lib/libbsp/m68k/mcf5206elite/make/custom/mcf5206elite.cfg
@@ -15,3 +15,6 @@ CPU_CFLAGS = -mcpu=5206
# optimize flag: typically -O2
CFLAGS_OPTIMIZE_V = -O2 -g -fomit-frame-pointer
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
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