[rtems commit] arm/altera-cyclone-v: Add per-section compilation and linking support

[Joel Sherrill]

Module:    rtems
Branch:    master
Commit:    1a244d14103c10262ace5f072748c5dc13153996
Changeset: http://git.rtems.org/rtems/commit/?id=1a244d14103c10262ace5f072748c5dc13153996

Author:    Aun-Ali Zaidi <admin at kodeit.net>
Date:      Wed Jan  6 21:41:21 2016 -0600

arm/altera-cyclone-v: Add per-section compilation and linking support

The size of the sample executables without this option were:

   text	   data	    bss	    	dec	    	hex		filename
 102224	   1896	1071540512	1071644632	3fdfffd8	minimum.exe
 114052	   2012	1071528560	1071644624	3fdfffd0	base_sp.exe
 124228	   2100	1071518284	1071644612	3fdfffc4	nsecs.exe
 156660	   2488	1071485472	1071644620	3fdfffcc	capture.exe
 171712	   2032	1071470888	1071644632	3fdfffd8	cdtest.exe
 152916	   2388	1071489312	1071644616	3fdfffc8	paranoia.exe
 107132	   1980	1071535512	1071644624	3fdfffd0	hello.exe
 421588	   5924	1071217120	1071644632	3fdfffd8	fileio.exe
 116652	   2012	1071525960	1071644624	3fdfffd0	ticker.exe
 205796	   6784	1071432044	1071644624	3fdfffd0	loopback.exe
 442992	   2240	1071199404	1071644636	3fdfffdc	cxx_iostream.exe
 332816	  12900	1071298908	1071644624	3fdfffd0	pppd.exe
 116180	   2036	1071526400	1071644616	3fdfffc8	unlimited.exe

The size of the sample executables with this option enabled were:

   text	   data	    bss	    	dec	    	hex		filename
  24988	   1280	1071618360	1071644628	3fdfffd4	minimum.exe
  67872	   1940	1071574804	1071644616	3fdfffc8	base_sp.exe
  81480	   2028	1071561132	1071644640	3fdfffe0	nsecs.exe
 133340	   2408	1071508888	1071644636	3fdfffdc	capture.exe
 140428	   1960	1071502236	1071644624	3fdfffd0	cdtest.exe
 120388	   2316	1071521936	1071644640	3fdfffe0	paranoia.exe
  73212	   1900	1071569528	1071644640	3fdfffe0	hello.exe
 392652	   5852	1071246120	1071644624	3fdfffd0	fileio.exe
  70472	   1940	1071572204	1071644616	3fdfffc8	ticker.exe
 175352	   6624	1071462652	1071644628	3fdfffd4	loopback.exe
 290832	   2160	1071351628	1071644620	3fdfffcc	cxx_iostream.exe
 294284	  12696	1071337640	1071644620	3fdfffcc	pppd.exe
  69124	   1956	1071573552	1071644632	3fdfffd8	unlimited.exe

---

 c/src/lib/libbsp/arm/altera-cyclone-v/make/custom/altcycv.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/c/src/lib/libbsp/arm/altera-cyclone-v/make/custom/altcycv.inc b/c/src/lib/libbsp/arm/altera-cyclone-v/make/custom/altcycv.inc
index bbe3f54..f3e7f1a 100644
--- a/c/src/lib/libbsp/arm/altera-cyclone-v/make/custom/altcycv.inc
+++ b/c/src/lib/libbsp/arm/altera-cyclone-v/make/custom/altcycv.inc
@@ -6,3 +6,7 @@ CPU_CFLAGS = -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -mtune=cortex-a9
 
 #CFLAGS_OPTIMIZE_V ?= -O0 -g
 CFLAGS_OPTIMIZE_V ?= -O2 -g
+
+# Add CFLAGS and LDFLAGS for compiling and linking with per item sections
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+LDFLAGS            = -Wl,--gc-sections