I do not set any thumb or thumb interworking flags yet I get errors on linking indicated the problem.  I have attached a file with the captured build commands and link commands?  Any help would be appreciated. —– begin —–
arm-elf-gcc (GCC) 4.1.1 (WinARM)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiling C (ARM-only): processctl.c
arm-elf-gcc -c
-mcpu=arm7tdmi
-I.
-g
-DROM_RUN
-DGCC_ARM7
-DUSE_FREE_RTOS
-Os
-Wall
-Wextra
-Wshadow
-Wpointer-arith 
-Wbad-function-cast
-Wcast-align
-Wsign-compare
-Waggregate-return
-Wreturn-type
-Wstrict-prototypes
-Wmissing-prototypes
-Wmissing-declarations
-Wunused
-fomit-frame-pointer
-fno-strict-aliasing
-std=gnu99
-I/Cyber/SfwLibraries/arm7
-I/Cyber/SfwLibraries/arm7/LPC21xx
-I/Cyber/SfwLibraries/DevHandlers/arm7/LPC21xx
-I/Cyber/SfwLibraries/Utilities
-I/FreeRTOS/Source/include
-I/Cyber/SfwLibraries/FreeRTOS/LPC21xx
-MD
-MP
-MF
.dep/processctl.o.d
processctl.c
-o processctl.o Linking: ProcessControl.elf
arm-elf-gcc
-mcpu=arm7tdmi
-I.
-g
-DROM_RUN
-DGCC_ARM7
-DUSE_FREE_RTOS
-Os
-Wall
-Wextra
-Wshadow
-Wpointer-arith 
-Wbad-function-cast
-Wcast-align
-Wsign-compare
-Waggregate-return
-Wreturn-type
-Wstrict-prototypes
-Wmissing-prototypes
-Wmissing-declarations
-Wunused
-fomit-frame-pointer
-fno-strict-aliasing
-std=gnu99
-I/Cyber/SfwLibraries/arm7
-I/Cyber/SfwLibraries/arm7/LPC21xx
-I/Cyber/SfwLibraries/DevHandlers/arm7/LPC21xx
-I/Cyber/SfwLibraries/Utilities
-I/FreeRTOS/Source/include
-I/Cyber/SfwLibraries/FreeRTOS/LPC21xx  
processctl.o
/Cyber/SfwLibraries/DevHandlers/arm7/LPC21xx/sysconf.o
/Cyber/SfwLibraries/DevHandlers/arm7/LPC21xx/tm0hand.o
/Cyber/SfwLibraries/DevHandlers/arm7/LPC21xx/vichand.o
/FreeRTOS/Source/list.o
/FreeRTOS/Source/queue.o
/FreeRTOS/Source/tasks.o
/Cyber/SfwLibraries/FreeRTOS/LPC21xx/port.o
/FreeRTOS/Source/portable/MemMang/heap_2.o  
-nostartfiles
/Cyber/SfwLibraries/arm7/LPC21xx/crt0.o
-Xlinker
-oProcessControl.elf
-Xlinker
-M
-Xlinker
-Map=ProcessControl.map G:CyberProcessControllerctlsfw>make >make.txt
processctl.c: In function ‘LedTask’:
processctl.c:150: warning: statement with no effect
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: /Cyber/SfwLibraries/arm7/LPC21xx/crt0.o does not support interworking,
whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_udivsi3.o) do
es not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_dvmd_tls.o) d
oes not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_addsubdf3.o)
does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_muldivdf3.o)
does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_fixunsdfsi.o)
does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(memcpy.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(memset.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(sprintf.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(strcat.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(strncpy.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(vfprintf.o) does not support interworking, whereas ProcessControl.elf do
es
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(wcrtomb.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(wcsrtombs.o) does not support interworking, whereas ProcessControl.elf d
oes
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(wctomb_r.o) does not support interworking, whereas ProcessControl.elf do
es
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(wsetup.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(dtoa.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(fflush.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(findfp.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(freer.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(fvwrite.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(fwalk.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(impure.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(locale.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(makebuf.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(mallocr.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(memchr.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(memmove.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(mlock.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(mprec.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(reallocr.o) does not support interworking, whereas ProcessControl.elf do
es
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(s_isinf.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(s_isnan.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(stdio.o) does not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(strcmp.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(strlen.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(callocr.o) does not support interworking, whereas ProcessControl.elf doe
s
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/lib
libg.a(fclose.o) does not support interworking, whereas ProcessControl.elf does c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_divsi3.o) doe
s not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_umodsi3.o) do
es not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_modsi3.o) doe
s not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_cmpdf2.o) doe
s not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
Warning: c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1libgcc.a(_fixdfsi.o) do
es not support interworking, whereas ProcessControl.elf does
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
/FreeRTOS/Source/tasks.o(vTaskSuspendAll): warning: interworking not enabled.
  first occurrence: /FreeRTOS/Source/portable/MemMang/heap_2.o: thumb call to ar
m
/FreeRTOS/Source/portable/MemMang/heap_2.o: In function `pvPortMalloc’:
heap_2.c:(.text+0xe): warning: internal error: dangerous error
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
/FreeRTOS/Source/tasks.o(xTaskResumeAll): warning: interworking not enabled.
  first occurrence: /FreeRTOS/Source/portable/MemMang/heap_2.o: thumb call to ar
m
heap_2.c:(.text+0x186): warning: internal error: dangerous error
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
/FreeRTOS/Source/tasks.o(vTaskSuspendAll): warning: interworking not enabled.
  first occurrence: /FreeRTOS/Source/portable/MemMang/heap_2.o: thumb call to ar
m
/FreeRTOS/Source/portable/MemMang/heap_2.o: In function `vPortFree’:
heap_2.c:(.text+0x1e2): warning: internal error: dangerous error
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/bin/ld.exe:
/FreeRTOS/Source/tasks.o(xTaskResumeAll): warning: interworking not enabled.
  first occurrence: /FreeRTOS/Source/portable/MemMang/heap_2.o: thumb call to ar
m
heap_2.c:(.text+0x228): warning: internal error: dangerous error
/Cyber/SfwLibraries/arm7/LPC21xx/crt0.o: In function `abort’:
/Cyber/SfwLibraries/arm7/LPC21xx/crt0.S:165: undefined reference to `_data’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(f
reer.o): In function `_malloc_trim_r’:
mallocr.c:(.text+0x48): undefined reference to `_sbrk_r’
mallocr.c:(.text+0x64): undefined reference to `_sbrk_r’
mallocr.c:(.text+0x84): undefined reference to `_sbrk_r’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(m
akebuf.o): In function `__smakebuf’:
makebuf.c:(.text+0x3c): undefined reference to `_fstat_r’
makebuf.c:(.text+0x110): undefined reference to `isatty’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(m
allocr.o): In function `_malloc_r’:
mallocr.c:(.text+0x424): undefined reference to `_sbrk_r’
mallocr.c:(.text+0x4cc): undefined reference to `_sbrk_r’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(s
tdio.o): In function `__sclose’:
stdio.c:(.text+0xc): undefined reference to `_close_r’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(s
tdio.o): In function `__sseek’:
stdio.c:(.text+0x30): undefined reference to `_lseek_r’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(s
tdio.o): In function `__swrite’:
stdio.c:(.text+0x84): undefined reference to `_lseek_r’
stdio.c:(.text+0xac): undefined reference to `_write_r’
c:/winarm-20060606/bin/../lib/gcc/arm-elf/4.1.1/../../../../arm-elf/liblibg.a(s
tdio.o): In function `__sread’:
stdio.c:(.text+0xd0): undefined reference to `_read_r’
collect2: ld returned 1 exit status
make: ***  Error 1 G:CyberProcessControllerctlsfw>