[rtems commit] mips/jmr3904: Add per-section compilation and linking support
Joel Sherril
joel at rtems.org
Wed Jan 6 13:49:24 UTC 2016
Module: rtems
Branch: master
Commit: bd655345c1a5f7dba42ddf6cd56f6259c62eb267
Changeset: http://git.rtems.org/rtems/commit/?id=bd655345c1a5f7dba42ddf6cd56f6259c62eb267
Author: Joel Sherrill <joel at rtems.org>
Date: Tue Jan 5 17:21:59 2016 -0600
mips/jmr3904: Add per-section compilation and linking support
The size of the sample executables without this option were:
128028 1812 12224 142064 22af0 ticker.exe
52600 1324 8192 62116 f2a4 minimum.exe
1156240 2168 19696 1178104 11f9f8 cxx_iostream.exe
706952 5908 24600 737460 b40b4 fileio.exe
243232 2372 14084 259688 3f668 capture.exe
155660 1940 12376 169976 297f8 nsecs.exe
201256 2212 12896 216364 34d2c paranoia.exe
253696 1872 12576 268144 41770 cdtest.exe
124452 1812 12208 138472 21ce8 base_sp.exe
127640 1844 15648 145132 236ec unlimited.exe
133452 1780 11760 146992 23e30 hello.exe
The size of the sample executables with this option enabled were:
115052 1712 12096 128860 1f75c ticker.exe
40760 1256 8144 50160 c3f0 minimum.exe
671768 2076 18688 692532 a9134 cxx_iostream.exe
679672 5696 23992 709360 ad2f0 fileio.exe
227384 2196 13924 243504 3b730 capture.exe
143132 1832 12248 157212 2661c nsecs.exe
187736 2104 12768 202608 31770 paranoia.exe
234324 1788 12448 248560 3caf0 cdtest.exe
111556 1712 12080 125348 1e9a4 base_sp.exe
112876 1744 15520 130140 1fc5c unlimited.exe
118120 1688 11696 131504 201b0 hello.exe
---
c/src/lib/libbsp/mips/jmr3904/make/custom/jmr3904.cfg | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/c/src/lib/libbsp/mips/jmr3904/make/custom/jmr3904.cfg b/c/src/lib/libbsp/mips/jmr3904/make/custom/jmr3904.cfg
index 056f63c..6b76135 100644
--- a/c/src/lib/libbsp/mips/jmr3904/make/custom/jmr3904.cfg
+++ b/c/src/lib/libbsp/mips/jmr3904/make/custom/jmr3904.cfg
@@ -10,3 +10,8 @@ RTEMS_CPU_MODEL=tx3904
CPU_CFLAGS = -march=r3900 -Wa,-xgot -G0
CFLAGS_OPTIMIZE_V = -O2 -g
+
+# arguments to compile and link with per-element sections
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+LDFLAGS = -Wl,--gc-sections
+
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