[LLVMdev] make error building llvm/clang 3.2 on Linux
Duncan Sands
baldrick at free.fr
Tue Feb 26 00:57:25 PST 2013
Hi Michael, you don't need compiler-rt to use clang. If you don't need it, I
suggest you don't bother building it.
Ciao, Duncan.
On 21/02/13 01:15, Michael Young wrote:
>
> I'm attempting to build a native build of clang from the 3.2 source
> distribution tarballs, but I ran into this build error that's got me
> really puzzled. My platform is Linux - 32-bit Ubuntu (12.04) running
> on a PC. Here's the (abbreviated) output from make:
>
> ***************************************
> ...
> make[3]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime'
> make[4]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime/compiler-rt'
> make[5]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/source/compiler-rt-3.2.src'
> MKDIR: /home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime/compiler-rt/clang_linux/full-i386/i386/SubDir.lib
> COMPILE: clang_linux/full-i386/i386: /home/youngmj/DevTools/LLVM/Version_3.2/source/llvm-3.2.src/projects/compiler-rt/lib/absvdi2.c
> <* SNIP *>
> COMPILE: clang_linux/full-i386/i386: /home/youngmj/DevTools/LLVM/Version_3.2/source/llvm-3.2.src/projects/compiler-rt/lib/divxc3.c
> COMPILE: clang_linux/full-i386/i386: /home/youngmj/DevTools/LLVM/Version_3.2/source/llvm-3.2.src/projects/compiler-rt/lib/enable_execute_stack.c
> In file included from /home/youngmj/DevTools/LLVM/Version_3.2/source/llvm-3.2.src/projects/compiler-rt/lib/enable_execute_stack.c:13:
> /usr/include/i386-linux-gnu/sys/mman.h:23:10: fatal error: 'features.h' file not found
> #include <features.h>
> ^
> 1 error generated.
> ...
> ***************************************
>
> [Note: I created a symlink from <LLVM_SRC_DIR>/projects/compiler-rt to
> the directory created by unpacking the tarball source for compiler-rt
> (which is located on the same level as <LLVM_SRC_DIR> and has a suffix
> of "-3.2.src" in the name), so that's why the directory names may look
> a little funny.]
>
> Running "gcc -x c -E -v -" gives me the following:
>
> ***************************************
> $ gcc -xc -E -v -
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6/lto-wrapper
> Target: i686-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu
> Thread model: posix
> gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
> COLLECT_GCC_OPTIONS='-E' '-v' '-mtune=generic' '-march=i686'
> /usr/lib/gcc/i686-linux-gnu/4.6/cc1 -E -quiet -v -imultilib . -imultiarch i386-linux-gnu - -mtune=generic -march=i686 -fstack-protector
> ignoring nonexistent directory "/usr/local/include/i386-linux-gnu"
> ignoring nonexistent directory "/usr/lib/gcc/i686-linux-gnu/4.6/../../../../i686-linux-gnu/include"
> ignoring duplicate directory "/usr/include/i386-linux-gnu"
> #include "..." search starts here:
> #include <...> search starts here:
> /usr/include/i386-linux-gnu
> /usr/lib/gcc/i686-linux-gnu/4.6/include
> /usr/local/include
> /usr/lib/gcc/i686-linux-gnu/4.6/include-fixed
> /usr/include
> End of search list.
> # 1 "<stdin>"
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "<stdin>"
> COMPILER_PATH=/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/
> LIBRARY_PATH=/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../../lib/:/lib/i386-linux-gnu/:/lib/../lib/:/usr/lib/i386-linux-gnu/:/usr/lib/../lib/:/usr/lib/i386-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../:/lib/:/usr/lib/
> COLLECT_GCC_OPTIONS='-E' '-v' '-mtune=generic' '-march=i686'
> $
> ***************************************
>
> Running "gcc -x c++ -E -v -" gives me the following:
>
> ***************************************
> $ gcc -x c++ -E -v -
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6/lto-wrapper
> Target: i686-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu
> Thread model: posix
> gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
> COLLECT_GCC_OPTIONS='-E' '-v' '-mtune=generic' '-march=i686'
> /usr/lib/gcc/i686-linux-gnu/4.6/cc1plus -E -quiet -v -imultilib . -imultiarch i386-linux-gnu -D_GNU_SOURCE - -mtune=generic -march=i686 -fstack-protector
> ignoring nonexistent directory "/usr/local/include/i386-linux-gnu"
> ignoring nonexistent directory "/usr/lib/gcc/i686-linux-gnu/4.6/../../../../i686-linux-gnu/include"
> ignoring duplicate directory "/usr/include/i386-linux-gnu"
> #include "..." search starts here:
> #include <...> search starts here:
> /usr/include/i386-linux-gnu
> /usr/include/c++/4.6
> /usr/include/c++/4.6/i686-linux-gnu/.
> /usr/include/c++/4.6/backward
> /usr/lib/gcc/i686-linux-gnu/4.6/include
> /usr/local/include
> /usr/lib/gcc/i686-linux-gnu/4.6/include-fixed
> /usr/include
> End of search list.
> # 1 "<stdin>"
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "<stdin>"
> COMPILER_PATH=/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/
> LIBRARY_PATH=/usr/lib/gcc/i686-linux-gnu/4.6/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../../lib/:/lib/i386-linux-gnu/:/lib/../lib/:/usr/lib/i386-linux-gnu/:/usr/lib/../lib/:/usr/lib/i386-linux-gnu/:/usr/lib/gcc/i686-linux-gnu/4.6/../../../:/lib/:/usr/lib/
> COLLECT_GCC_OPTIONS='-E' '-v' '-mtune=generic' '-march=i686'
> $
> ***************************************
>
> Notice that "#include<...> search" has "/usr/include" in the list, for
> both c and c++. Now I do a ls -l /usr/include/features.h, and I see
> the following:
>
> ***************************************
>
> $ ls -l /usr/include/features.h
> -rw-r--r-- 1 root root 13084 Oct 5 16:34 /usr/include/features.h
> $
>
> ***************************************
>
> So I'm confused! Why can't the header file be found by the compiler
> when making clang/compiler-rt?
>
> Thanks,
> Michael
>
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