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This patch fixes a build error on arm:
arm-openwrt-linux-uclibcgnueabi-gcc -DHAVE_CONFIG_H -DPROFILE=1 -DWITH_PROFILE=-1 -DDEFAULT_INLINE=0 -DMODET -DNEED_UI_LOOP_HOOK -DSIM_TARGET_SWITCHES -I. -I. -I../common -I./../common -I../../include -I./../../include -I../../bfd -I./../../bfd -I../../opcodes -I./../../opcodes -Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16 -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -mfloat-abi=hard -static-libstdc++ -static-libgcc -L/fun/Projects/OpenWrt/dev/openwrt-core-2/staging_dir/target-arm_cortex-a8+vfpv3_uClibc-0.9.33.2_eabi/usr/lib -L/fun/Projects/OpenWrt/dev/openwrt-core-2/staging_dir/target-arm_cortex-a8+vfpv3_uClibc-0.9.33.2_eabi/lib -L/fun/Projects/OpenWrt/dev/openwrt-core-2/staging_dir/toolchain-arm_cortex-a8+vfpv3_gcc-4.8-linaro_uClibc-0.9.33.2_eabi/usr/lib -L/fun/Projects/OpenWrt/dev/openwrt-core-2/staging_dir/toolchain-arm_cortex-a8+vfpv3_gcc-4.8-linaro_uClibc-0.9.33.2_eabi/lib -o run \
run.o libsim.a ../../bfd/libbfd.a ../../opcodes/libopcodes.a ../../libiberty/libiberty.a -lz -lnsl
../../libiberty/libiberty.a(floatformat.o): In function `floatformat_to_double':
floatformat.c:(.text+0x454): undefined reference to `ldexp'
floatformat.c:(.text+0x4a4): undefined reference to `ldexp'
../../libiberty/libiberty.a(floatformat.o): In function `floatformat_from_double':
floatformat.c:(.text+0x5dc): undefined reference to `frexp'
floatformat.c:(.text+0x644): undefined reference to `ldexp'
collect2: error: ld returned 1 exit status
--- a/sim/arm/Makefile.in
+++ b/sim/arm/Makefile.in
@@ -18,6 +18,7 @@
## COMMON_PRE_CONFIG_FRAG
SIM_EXTRA_CFLAGS = -DMODET -DNEED_UI_LOOP_HOOK -DSIM_TARGET_SWITCHES
+SIM_EXTRA_LIBS = -lm
COPRO=@COPRO@
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