[rtems commit] m68k/mcf52235: Add per-section compilation and linking support.
Joel Sherrill
joel at rtems.org
Sat Jan 23 03:02:11 UTC 2016
Module: rtems
Branch: master
Commit: 42a97ee66053095317b594517ade2a7e486b979d
Changeset: http://git.rtems.org/rtems/commit/?id=42a97ee66053095317b594517ade2a7e486b979d
Author: Ralph Holmes <ralph at ybden.com>
Date: Sat Jan 23 02:07:35 2016 +0000
m68k/mcf52235: Add per-section compilation and linking support.
The size of the sample executables without this option were:
text data bss dec hex filename
94272 1680 7664 103616 194c0 base_sp.exe
108144 1648 7216 117008 1c910 hello.exe
32528 1216 4912 38656 9700 minimum.exe
113056 1760 7776 122592 1dee0 nsecs.exe
98000 1680 7696 107376 1a370 ticker.exe
95984 1712 11056 108752 1a8d0 unlimited.exe
202224 2272 7840 212336 33d70 cdtest.exe
The size of the sample executables with this option enabled were:
text data bss dec hex filename
86224 1648 7616 95488 17500 base_sp.exe
98512 1600 7152 107264 1a300 hello.exe
24032 1184 4864 30080 7580 minimum.exe
105520 1728 7712 114960 1c110 nsecs.exe
90112 1648 7632 99392 18440 ticker.exe
86576 1664 10992 99232 183a0 unlimited.exe
185952 2128 7760 195840 2fd00 cdtest.exe
---
c/src/lib/libbsp/m68k/mcf52235/make/custom/mcf52235.cfg | 3 +++
1 file changed, 3 insertions(+)
diff --git a/c/src/lib/libbsp/m68k/mcf52235/make/custom/mcf52235.cfg b/c/src/lib/libbsp/m68k/mcf52235/make/custom/mcf52235.cfg
index 9b22a21..b4431aa 100644
--- a/c/src/lib/libbsp/m68k/mcf52235/make/custom/mcf52235.cfg
+++ b/c/src/lib/libbsp/m68k/mcf52235/make/custom/mcf52235.cfg
@@ -13,6 +13,9 @@ CPU_CFLAGS = -mcpu=52235
# optimize flag: typically -O2
CFLAGS_OPTIMIZE_V = -O2 -g -fomit-frame-pointer
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
# This defines the operations performed on the linked executable.
# is currently required.
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