% eix -axve llvm
* sys-devel/llvm
     Available versions:  ~*3.4.2-r100(0/3.4) 3.5.0(0/3.5) (~)3.5.2(0/3.5) (~)3.6.2(0/3.6) 3.7.1-r3(0/3.7.1) (~)3.8.1(0/3.8.0) (~)3.8.1-r2(0/3.8.0) (~)3.9.0-r1(0/3.9.0){tbz2} **9999(0/9999)
     IUSE (all versions): clang debug default-compiler-rt default-libcxx (+)doc gold libedit +libffi lldb multitarget ncurses ocaml python +sanitize +static-analyzer test xml ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32" ELIBC="musl" KERNEL="Darwin FreeBSD" LLVM_TARGETS="AArch64 AMDGPU ARM BPF Hexagon Lanai MSP430 Mips NVPTX PowerPC RISCV Sparc SystemZ X86 XCore" PYTHON_TARGETS="pypy python2_7" VIDEO_CARDS="radeon"
     Installed versions:  Version:   3.9.0-r1{tbz2}
                          Date:      22:33:44 11/05/16
                          USE:       clang gold libffi multitarget ncurses python sanitize static-analyzer xml -debug -default-compiler-rt -default-libcxx -doc -libedit -lldb -ocaml -test ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="32 64 -x32" ELIBC="-musl" KERNEL="-Darwin -FreeBSD" LLVM_TARGETS="AArch64 AMDGPU ARM BPF Hexagon MSP430 Mips NVPTX PowerPC Sparc SystemZ X86 XCore" PYTHON_TARGETS="python2_7"
                          DEPEND:    sys-libs/zlib:0/0= >=dev-lang/python-2.7.5-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),python_single_target_python2_7(+)] dev-lang/perl:* >=dev-lang/python-2.7.5-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),python_single_target_python2_7(+)] dev-libs/libxml2:2/2=[abi_x86_32(-),abi_x86_64(-)] >=sys-devel/binutils-2.22:*[cxx] >=virtual/libffi-3.0.13-r1:0/0=[abi_x86_32(-),abi_x86_64(-)] >=sys-libs/ncurses-5.9-r3:0/5=[abi_x86_32(-),abi_x86_64(-)] dev-lang/perl >=sys-devel/make-3.81 >=sys-devel/flex-2.5.4 >=sys-devel/bison-1.875d || ( >=sys-devel/gcc-3.0 >=sys-devel/llvm-3.5 ( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx ) ) || ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-5.1 ) virtual/pkgconfig sys-libs/binutils-libs virtual/pkgconfig !!<dev-python/configparser-3.3.0.2 >=dev-lang/python-2.7.5-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),python_single_target_python2_7(+)] dev-util/ninja >=dev-util/cmake-3.6.1-r1
                          RDEPEND:   sys-libs/zlib:0/0= >=dev-lang/python-2.7.5-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),python_single_target_python2_7(+)] dev-lang/perl:* >=dev-lang/python-2.7.5-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),python_single_target_python2_7(+)] dev-libs/libxml2:2/2=[abi_x86_32(-),abi_x86_64(-)] >=sys-devel/binutils-2.22:*[cxx] >=virtual/libffi-3.0.13-r1:0/0=[abi_x86_32(-),abi_x86_64(-)] >=sys-libs/ncurses-5.9-r3:0/5=[abi_x86_32(-),abi_x86_64(-)] !<=sys-devel/clang-3.9.0-r99 !<=app-emulation/emul-linux-x86-baselibs-20130224-r2 !app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)]
                          PDEPEND:   =sys-devel/clang-3.9.0-r100 ~sys-devel/clang-runtime-3.9.0
                          EAPI:      6
                          (~)3.9.0-r1(0/3.9.0){tbz2}
     Homepage:            http://llvm.org/
     Find open bugs:      https://bugs.gentoo.org/buglist.cgi?quicksearch=sys-devel%2Fllvm
     Description:         Low Level Virtual Machine
     License:             UoI-NCSA rc BSD public-domain llvm_targets_ARM? ( LLVM-Grant )

% eix -axve clang
* sys-devel/clang
     Available versions:  ~*3.4.2-r100(0/3.4) 3.5.0-r100(0/3.5) (~)3.5.2-r100(0/3.5) (~)3.6.2-r100(0/3.6) 3.7.1-r100(0/3.7) (~)3.8.1-r100(0/3.8) (~)3.9.0-r100(0/3.9.0){tbz2} **9999(0/9999)
     IUSE (all versions): debug default-compiler-rt default-libcxx +doc multitarget python +static-analyzer test xml ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32" ELIBC="musl" KERNEL="FreeBSD" LLVM_TARGETS="AArch64 AMDGPU ARM BPF Hexagon Lanai MSP430 Mips NVPTX PowerPC RISCV Sparc SystemZ X86 XCore" PYTHON_TARGETS="python2_7"
     Installed versions:  Version:   3.9.0-r100{tbz2}
                          Date:      22:35:22 11/05/16
                          USE:       multitarget python static-analyzer -debug ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="32 64 -x32" LLVM_TARGETS="AArch64 AMDGPU ARM BPF Hexagon MSP430 Mips NVPTX PowerPC Sparc SystemZ X86 XCore"
                          RDEPEND:   ~sys-devel/llvm-3.9.0[clang(-),-debug,python,static-analyzer,llvm_targets_AArch64,llvm_targets_AMDGPU,llvm_targets_ARM,llvm_targets_BPF,llvm_targets_Hexagon,llvm_targets_Mips,llvm_targets_MSP430,llvm_targets_NVPTX,llvm_targets_PowerPC,llvm_targets_Sparc,llvm_targets_SystemZ,llvm_targets_X86,llvm_targets_XCore,abi_x86_32(-),abi_x86_64(-)]
                          EAPI:      5
                          (~)3.9.0-r100(0/3.9.0){tbz2}
     Homepage:            http://llvm.org/
     Find open bugs:      https://bugs.gentoo.org/buglist.cgi?quicksearch=sys-devel%2Fclang
     Description:         C language family frontend for LLVM
     License:             UoI-NCSA
