updates #2577.
For the nios2_iss BSP variant without this option sample executables
sizes were as follows:
text data bss dec hex filename
198692 6672 6068 211432 339e8 ticker.exe
75408 1924 1892 79224 13578 minimum.exe
1044536 36308 14032 1094876 10b4dc cxx_iostream.exe
877164 68972 19300 965436 ebb3c fileio.exe
703628 48772 37196 789596 c0c5c pppd.exe
336340 19532 8972 364844 5912c capture.exe
216196 6912 6148 229256 37f88 nsecs.exe
319236 18048 6632 343916 53f6c paranoia.exe
317556 12944 7020 337520 52670 cdtest.exe
192980 6476 6036 205492 322b4 base_sp.exe
198068 6680 9876 214624 34660 unlimited.exe
206628 4856 6036 217520 351b0 hello.exe
459304 19208 13368 491880 78168 loopback.exe
For the nios2_iss BSP variant with this option sample executables
sizes were as follows:
text data bss dec hex filename
187044 6560 6048 199652 30be4 ticker.exe
50944 828 1880 53652 d194 minimum.exe
731956 27876 13228 773060 bcbc4 cxx_iostream.exe
848108 67272 19020 934400 e4200 fileio.exe
645152 47968 36464 729584 b21f0 pppd.exe
315092 18792 8952 342836 53b34 capture.exe
205588 6780 6128 218496 35580 nsecs.exe
305684 17916 6612 330212 509e4 paranoia.exe
305360 11476 7000 323836 4f0fc cdtest.exe
179428 6364 6016 191808 2ed40 base_sp.exe
182036 6548 9856 198440 30728 unlimited.exe
189908 4708 6016 200632 30fb8 hello.exe
421696 18772 13280 453748 6ec74 loopback.exe
---
c/src/lib/libbsp/nios2/nios2_iss/make/custom/nios2_iss.cfg | 3 +++
1 file changed, 3 insertions(+)
diff --git a/c/src/lib/libbsp/nios2/nios2_iss/make/custom/nios2_iss.cfg
b/c/src/lib/libbsp/nios2/nios2_iss/make/custom/nios2_iss.cfg
index 8254eec..2bec4b1 100644
--- a/c/src/lib/libbsp/nios2/nios2_iss/make/custom/nios2_iss.cfg
+++ b/c/src/lib/libbsp/nios2/nios2_iss/make/custom/nios2_iss.cfg
@@ -19,6 +19,9 @@ CPU_CFLAGS = -mno-hw-mul -mno-hw-div
# optimize flag: typically -O2
# ATM, doesn't work with optimization levels > 0
CFLAGS_OPTIMIZE_V = -O0 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
define bsp-post-link
$(OBJCOPY) -O binary --strip-all $(basename $@)$(EXEEXT) \
--
1.8.3.1
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