Configuring for a i586-pc-linux-gnu host.
...
creating auto-host.h
make[1]: Entering directory `/usr/local/src/gnu/gcc-cvs/build/libiberty'
if [ x"" != x ] && [ ! -d pic ]; then \
  mkdir pic; \
else true; fi
touch stamp-picdir
if [ x"" != x ]; then \
  gcc -c -DHAVE_CONFIG_H -g -O2 -I. -I../../gcc/libiberty/../include  -W -Wall -Wtraditional -pedantic  ../../gcc/libiberty/regex.c -o pic/regex.o; \
else true; fi
gcc -c -DHAVE_CONFIG_H -g -O2 -I. -I../../gcc/libiberty/../include  -W -Wall -Wtraditional -pedantic ../../gcc/libiberty/regex.c
In file included from ../../gcc/libiberty/regex.c:649:
...
make[1]: Leaving directory `/usr/local/src/gnu/gcc-cvs/build/libiberty'
Bootstrapping the compiler
make[1]: Entering directory `/usr/local/src/gnu/gcc-cvs/build/gcc'
make CC="gcc" libdir=/usr/local/src/gnu/gcc-cvs/install/lib LANGUAGES="c " \
	CFLAGS="-g " MAKEINFO="makeinfo " \
	MAKEINFOFLAGS=""
make[2]: Entering directory `/usr/local/src/gnu/gcc-cvs/build/gcc'
...
../../gcc/gcc/gengenrtl.c: In function `accessor_from_format':
../../gcc/gcc/gengenrtl.c:123: warning: control reaches end of non-void function
MF> switch that lacks a default case.
...
gcc -c -DIN_GCC    -g  -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/config -I../../gcc/gcc/../include ../../gcc/gcc/lcm.c -o lcm.o
../../gcc/gcc/lcm.c: In function `optimize_mode_switching':
../../gcc/gcc/lcm.c:1027: warning: unused variable `post_entry'
...
echo stage2_build > stage_last
make CC="stage1/xgcc -Bstage1/ -B/usr/local/src/gnu/gcc-cvs/install/i586-pc-linux-gnu/bin/" \
	 STAGE_PREFIX=stage1/ \
	 ADAC="\$(CC)" CFLAGS="-g -O2" LDFLAGS="" WARN_CFLAGS="\$(GCC_WARN_CFLAGS)" STRICT_WARN="-Wtraditional -pedantic -Wno-long-long" libdir=/usr/local/src/gnu/gcc-cvs/install/lib LANGUAGES="c gcov c++ treelang" MAKEOVERRIDES= OUTPUT_OPTION="-o \$@"
make[2]: Entering directory `/usr/local/src/gnu/gcc-cvs/build/gcc'
stage1/xgcc -Bstage1/ -B/usr/local/src/gnu/gcc-cvs/install/i586-pc-linux-gnu/bin/ -c -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H -DGENERATOR_FILE    -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/config -I../../gcc/gcc/../include ../../gcc/gcc/gengenrtl.c -o gengenrtl.o
In file included from ../../gcc/gcc/gengenrtl.c:29:
../../gcc/gcc/real.h:122:8: #error "REAL_WIDTH > 5 not supported"
In file included from ../../gcc/gcc/gengenrtl.c:40:
../../gcc/gcc/rtl.def:727: `CONST_DOUBLE_FORMAT' undeclared here (not in a function)
../../gcc/gcc/rtl.def:727: initializer element is not constant
../../gcc/gcc/rtl.def:727: (near initialization for `defs[65].format')
../../gcc/gcc/rtl.def:727: warning: missing initializer
../../gcc/gcc/rtl.def:727: warning: (near initialization for `defs[65].format')
../../gcc/gcc/rtl.def:727: initializer element is not constant
../../gcc/gcc/rtl.def:727: (near initialization for `defs[65]')
../../gcc/gcc/rtl.def:730: initializer element is not constant
../../gcc/gcc/rtl.def:730: (near initialization for `defs[66]')
../../gcc/gcc/rtl.def:733: initializer element is not constant
../../gcc/gcc/rtl.def:733: (near initialization for `defs[67]')
../../gcc/gcc/rtl.def:739: initializer element is not constant
../../gcc/gcc/rtl.def:739: (near initialization for `defs[68]')
../../gcc/gcc/rtl.def:743: initializer element is not constant
../../gcc/gcc/rtl.def:743: (near initialization for `defs[69]')
../../gcc/gcc/rtl.def:746: initializer element is not constant
../../gcc/gcc/rtl.def:746: (near initialization for `defs[70]')
../../gcc/gcc/rtl.def:755: initializer element is not constant
../../gcc/gcc/rtl.def:755: (near initialization for `defs[71]')
../../gcc/gcc/rtl.def:762: initializer element is not constant
../../gcc/gcc/rtl.def:762: (near initialization for `defs[72]')
../../gcc/gcc/rtl.def:772: initializer element is not constant
../../gcc/gcc/rtl.def:772: (near initialization for `defs[73]')
../../gcc/gcc/rtl.def:785: initializer element is not constant
../../gcc/gcc/rtl.def:785: (near initialization for `defs[74]')
../../gcc/gcc/rtl.def:791: initializer element is not constant
../../gcc/gcc/rtl.def:791: (near initialization for `defs[75]')
../../gcc/gcc/rtl.def:796: initializer element is not constant
../../gcc/gcc/rtl.def:796: (near initialization for `defs[76]')
../../gcc/gcc/rtl.def:802: initializer element is not constant
../../gcc/gcc/rtl.def:802: (near initialization for `defs[77]')
../../gcc/gcc/rtl.def:808: initializer element is not constant
../../gcc/gcc/rtl.def:808: (near initialization for `defs[78]')
../../gcc/gcc/rtl.def:815: initializer element is not constant
../../gcc/gcc/rtl.def:815: (near initialization for `defs[79]')
../../gcc/gcc/rtl.def:824: initializer element is not constant
../../gcc/gcc/rtl.def:824: (near initialization for `defs[80]')
../../gcc/gcc/rtl.def:842: initializer element is not constant
../../gcc/gcc/rtl.def:842: (near initialization for `defs[81]')
../../gcc/gcc/rtl.def:854: initializer element is not constant
../../gcc/gcc/rtl.def:854: (near initialization for `defs[82]')
../../gcc/gcc/rtl.def:863: initializer element is not constant
../../gcc/gcc/rtl.def:863: (near initialization for `defs[83]')
../../gcc/gcc/rtl.def:866: initializer element is not constant
../../gcc/gcc/rtl.def:866: (near initialization for `defs[84]')
../../gcc/gcc/rtl.def:869: initializer element is not constant
../../gcc/gcc/rtl.def:869: (near initialization for `defs[85]')
../../gcc/gcc/rtl.def:872: initializer element is not constant
../../gcc/gcc/rtl.def:872: (near initialization for `defs[86]')
../../gcc/gcc/rtl.def:875: initializer element is not constant
../../gcc/gcc/rtl.def:875: (near initialization for `defs[87]')
../../gcc/gcc/rtl.def:877: initializer element is not constant
../../gcc/gcc/rtl.def:877: (near initialization for `defs[88]')
../../gcc/gcc/rtl.def:880: initializer element is not constant
../../gcc/gcc/rtl.def:880: (near initialization for `defs[89]')
../../gcc/gcc/rtl.def:882: initializer element is not constant
../../gcc/gcc/rtl.def:882: (near initialization for `defs[90]')
../../gcc/gcc/rtl.def:885: initializer element is not constant
../../gcc/gcc/rtl.def:885: (near initialization for `defs[91]')
../../gcc/gcc/rtl.def:886: initializer element is not constant
../../gcc/gcc/rtl.def:886: (near initialization for `defs[92]')
../../gcc/gcc/rtl.def:889: initializer element is not constant
../../gcc/gcc/rtl.def:889: (near initialization for `defs[93]')
../../gcc/gcc/rtl.def:891: initializer element is not constant
../../gcc/gcc/rtl.def:891: (near initialization for `defs[94]')
../../gcc/gcc/rtl.def:893: initializer element is not constant
../../gcc/gcc/rtl.def:893: (near initialization for `defs[95]')
../../gcc/gcc/rtl.def:895: initializer element is not constant
../../gcc/gcc/rtl.def:895: (near initialization for `defs[96]')
../../gcc/gcc/rtl.def:900: initializer element is not constant
../../gcc/gcc/rtl.def:900: (near initialization for `defs[97]')
../../gcc/gcc/rtl.def:901: initializer element is not constant
../../gcc/gcc/rtl.def:901: (near initialization for `defs[98]')
../../gcc/gcc/rtl.def:902: initializer element is not constant
../../gcc/gcc/rtl.def:902: (near initialization for `defs[99]')
../../gcc/gcc/rtl.def:903: initializer element is not constant
../../gcc/gcc/rtl.def:903: (near initialization for `defs[100]')
../../gcc/gcc/rtl.def:904: initializer element is not constant
../../gcc/gcc/rtl.def:904: (near initialization for `defs[101]')
../../gcc/gcc/rtl.def:910: initializer element is not constant
../../gcc/gcc/rtl.def:910: (near initialization for `defs[102]')
../../gcc/gcc/rtl.def:911: initializer element is not constant
../../gcc/gcc/rtl.def:911: (near initialization for `defs[103]')
../../gcc/gcc/rtl.def:912: initializer element is not constant
../../gcc/gcc/rtl.def:912: (near initialization for `defs[104]')
../../gcc/gcc/rtl.def:913: initializer element is not constant
../../gcc/gcc/rtl.def:913: (near initialization for `defs[105]')
../../gcc/gcc/rtl.def:922: initializer element is not constant
../../gcc/gcc/rtl.def:922: (near initialization for `defs[106]')
../../gcc/gcc/rtl.def:923: initializer element is not constant
../../gcc/gcc/rtl.def:923: (near initialization for `defs[107]')
../../gcc/gcc/rtl.def:924: initializer element is not constant
../../gcc/gcc/rtl.def:924: (near initialization for `defs[108]')
../../gcc/gcc/rtl.def:925: initializer element is not constant
../../gcc/gcc/rtl.def:925: (near initialization for `defs[109]')
../../gcc/gcc/rtl.def:939: initializer element is not constant
../../gcc/gcc/rtl.def:939: (near initialization for `defs[110]')
../../gcc/gcc/rtl.def:940: initializer element is not constant
../../gcc/gcc/rtl.def:940: (near initialization for `defs[111]')
../../gcc/gcc/rtl.def:944: initializer element is not constant
../../gcc/gcc/rtl.def:944: (near initialization for `defs[112]')
../../gcc/gcc/rtl.def:945: initializer element is not constant
../../gcc/gcc/rtl.def:945: (near initialization for `defs[113]')
../../gcc/gcc/rtl.def:946: initializer element is not constant
../../gcc/gcc/rtl.def:946: (near initialization for `defs[114]')
../../gcc/gcc/rtl.def:947: initializer element is not constant
../../gcc/gcc/rtl.def:947: (near initialization for `defs[115]')
../../gcc/gcc/rtl.def:948: initializer element is not constant
../../gcc/gcc/rtl.def:948: (near initialization for `defs[116]')
../../gcc/gcc/rtl.def:949: initializer element is not constant
../../gcc/gcc/rtl.def:949: (near initialization for `defs[117]')
../../gcc/gcc/rtl.def:950: initializer element is not constant
../../gcc/gcc/rtl.def:950: (near initialization for `defs[118]')
../../gcc/gcc/rtl.def:951: initializer element is not constant
../../gcc/gcc/rtl.def:951: (near initialization for `defs[119]')
../../gcc/gcc/rtl.def:952: initializer element is not constant
../../gcc/gcc/rtl.def:952: (near initialization for `defs[120]')
../../gcc/gcc/rtl.def:953: initializer element is not constant
../../gcc/gcc/rtl.def:953: (near initialization for `defs[121]')
../../gcc/gcc/rtl.def:956: initializer element is not constant
../../gcc/gcc/rtl.def:956: (near initialization for `defs[122]')
../../gcc/gcc/rtl.def:957: initializer element is not constant
../../gcc/gcc/rtl.def:957: (near initialization for `defs[123]')
../../gcc/gcc/rtl.def:960: initializer element is not constant
../../gcc/gcc/rtl.def:960: (near initialization for `defs[124]')
../../gcc/gcc/rtl.def:961: initializer element is not constant
../../gcc/gcc/rtl.def:961: (near initialization for `defs[125]')
../../gcc/gcc/rtl.def:962: initializer element is not constant
../../gcc/gcc/rtl.def:962: (near initialization for `defs[126]')
../../gcc/gcc/rtl.def:963: initializer element is not constant
../../gcc/gcc/rtl.def:963: (near initialization for `defs[127]')
../../gcc/gcc/rtl.def:964: initializer element is not constant
../../gcc/gcc/rtl.def:964: (near initialization for `defs[128]')
../../gcc/gcc/rtl.def:967: initializer element is not constant
../../gcc/gcc/rtl.def:967: (near initialization for `defs[129]')
../../gcc/gcc/rtl.def:972: initializer element is not constant
../../gcc/gcc/rtl.def:972: (near initialization for `defs[130]')
../../gcc/gcc/rtl.def:975: initializer element is not constant
../../gcc/gcc/rtl.def:975: (near initialization for `defs[131]')
../../gcc/gcc/rtl.def:978: initializer element is not constant
../../gcc/gcc/rtl.def:978: (near initialization for `defs[132]')
../../gcc/gcc/rtl.def:981: initializer element is not constant
../../gcc/gcc/rtl.def:981: (near initialization for `defs[133]')
../../gcc/gcc/rtl.def:982: initializer element is not constant
../../gcc/gcc/rtl.def:982: (near initialization for `defs[134]')
../../gcc/gcc/rtl.def:985: initializer element is not constant
../../gcc/gcc/rtl.def:985: (near initialization for `defs[135]')
../../gcc/gcc/rtl.def:993: initializer element is not constant
../../gcc/gcc/rtl.def:993: (near initialization for `defs[136]')
../../gcc/gcc/rtl.def:996: initializer element is not constant
../../gcc/gcc/rtl.def:996: (near initialization for `defs[137]')
../../gcc/gcc/rtl.def:1001: initializer element is not constant
../../gcc/gcc/rtl.def:1001: (near initialization for `defs[138]')
../../gcc/gcc/rtl.def:1004: initializer element is not constant
../../gcc/gcc/rtl.def:1004: (near initialization for `defs[139]')
../../gcc/gcc/rtl.def:1007: initializer element is not constant
../../gcc/gcc/rtl.def:1007: (near initialization for `defs[140]')
../../gcc/gcc/rtl.def:1012: initializer element is not constant
../../gcc/gcc/rtl.def:1012: (near initialization for `defs[141]')
../../gcc/gcc/rtl.def:1023: initializer element is not constant
../../gcc/gcc/rtl.def:1023: (near initialization for `defs[142]')
../../gcc/gcc/rtl.def:1026: initializer element is not constant
../../gcc/gcc/rtl.def:1026: (near initialization for `defs[143]')
../../gcc/gcc/rtl.def:1031: initializer element is not constant
../../gcc/gcc/rtl.def:1031: (near initialization for `defs[144]')
../../gcc/gcc/rtl.def:1035: initializer element is not constant
../../gcc/gcc/rtl.def:1035: (near initialization for `defs[145]')
../../gcc/gcc/rtl.def:1048: initializer element is not constant
../../gcc/gcc/rtl.def:1048: (near initialization for `defs[146]')
../../gcc/gcc/rtl.def:1063: initializer element is not constant
../../gcc/gcc/rtl.def:1063: (near initialization for `defs[147]')
../../gcc/gcc/rtl.def:1069: initializer element is not constant
../../gcc/gcc/rtl.def:1069: (near initialization for `defs[148]')
../../gcc/gcc/rtl.def:1073: initializer element is not constant
../../gcc/gcc/rtl.def:1073: (near initialization for `defs[149]')
../../gcc/gcc/rtl.def:1078: initializer element is not constant
../../gcc/gcc/rtl.def:1078: (near initialization for `defs[150]')
../../gcc/gcc/rtl.def:1099: initializer element is not constant
../../gcc/gcc/rtl.def:1099: (near initialization for `defs[151]')
../../gcc/gcc/rtl.def:1106: initializer element is not constant
../../gcc/gcc/rtl.def:1106: (near initialization for `defs[152]')
../../gcc/gcc/rtl.def:1112: initializer element is not constant
../../gcc/gcc/rtl.def:1112: (near initialization for `defs[153]')
../../gcc/gcc/rtl.def:1117: initializer element is not constant
../../gcc/gcc/rtl.def:1117: (near initialization for `defs[154]')
../../gcc/gcc/rtl.def:1123: initializer element is not constant
../../gcc/gcc/rtl.def:1123: (near initialization for `defs[155]')
../../gcc/gcc/rtl.def:1126: initializer element is not constant
../../gcc/gcc/rtl.def:1126: (near initialization for `defs[156]')
../../gcc/gcc/rtl.def:1129: initializer element is not constant
../../gcc/gcc/rtl.def:1129: (near initialization for `defs[157]')
../../gcc/gcc/rtl.def:1132: initializer element is not constant
../../gcc/gcc/rtl.def:1132: (near initialization for `defs[158]')
../../gcc/gcc/rtl.def:1135: initializer element is not constant
../../gcc/gcc/rtl.def:1135: (near initialization for `defs[159]')
../../gcc/gcc/rtl.def:1138: initializer element is not constant
../../gcc/gcc/rtl.def:1138: (near initialization for `defs[160]')
../../gcc/gcc/rtl.def:1141: initializer element is not constant
../../gcc/gcc/rtl.def:1141: (near initialization for `defs[161]')
../../gcc/gcc/rtl.def:1155: initializer element is not constant
../../gcc/gcc/rtl.def:1155: (near initialization for `defs[162]')
make[2]: *** [gengenrtl.o] Error 1
make[2]: Leaving directory `/usr/local/src/gnu/gcc-cvs/build/gcc'
make[1]: *** [stage2_build] Error 2
make[1]: Leaving directory `/usr/local/src/gnu/gcc-cvs/build/gcc'
make: *** [bootstrap] Error 2