Dear all, I want to build the source of gcc and make '-msoft-float' available. But I don't know how to build the source code. I just do it as the following steps: 1. download the source code, gcc-4.1.2.tar.gz, from the mirror site; 2. tar -xzf gcc-4.1.2.tar.gz; 3. ./configure --prefix=/home/user/gcc4.1.2/install --with-local-prefix=/home/user/gcc4.1.2/install --enable-threads=single --enable-languages=c,c++,objc --enable-bootstrap 4. make CFLAGS='-O' LIBCFLAGS='-g -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates -msoft-float' bootstrap 5. make install Finally, I use the above gcc to compile a test program /home/user/gcc4.1.2/install/bin/gcc -msoft-float test.c -o test but there are errors : /tmp/ccWjy9Ug.o: In function `main': test.c:(.text+0x2f): undefined reference to `__floatsidf' test.c:(.text+0x55): undefined reference to `__adddf3' test.c:(.text+0x61): undefined reference to `__fixdfsi' collect2: ld returned 1 exit status When I modify the configure and make command, as the following, 3. ./configure --prefix=/home/user/gcc4.1.2/install --with-local-prefix=/home/user/gcc4.1.2/install --with-gnu-as --with-gnu-ld --enable-multilib --enable-threads=single --enable-languages=c,c++ --with-float=soft --enable-bootstrap 4. make CFLAGS='-O' LIBCFLAGS='-g -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates -msoft-float' bootstrap there are errors as the following: ............................ checking for .preinit_array/.init_array/.fini_array support... yes checking if mkdir takes one argument... no This target does not support --with-float. make[2]: *** [configure-stage1-gcc] Error 1 make[2]: Leaving directory `/home/user/gcc4.1.2/gcc-4.1.2' make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory `/home/user/gcc4.1.2/gcc-4.1.2' make: *** [bootstrap] Error 2 Would you like to tell me how to configure and compile GCC, and then I could use the '-msoft-float' flag. Any suggestions from you are appreciated. Thanks. Best wishes, Peter
