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      1 llvm-config - Print LLVM compilation options
      2 ============================================
      3 
      4 
      5 SYNOPSIS
      6 --------
      7 
      8 
      9 **llvm-config** *option* [*components*...]
     10 
     11 
     12 DESCRIPTION
     13 -----------
     14 
     15 
     16 **llvm-config** makes it easier to build applications that use LLVM.  It can
     17 print the compiler flags, linker flags and object libraries needed to link
     18 against LLVM.
     19 
     20 
     21 EXAMPLES
     22 --------
     23 
     24 
     25 To link against the JIT:
     26 
     27 
     28 .. code-block:: sh
     29 
     30    g++ `llvm-config --cxxflags` -o HowToUseJIT.o -c HowToUseJIT.cpp
     31    g++ `llvm-config --ldflags` -o HowToUseJIT HowToUseJIT.o \
     32        `llvm-config --libs engine bcreader scalaropts`
     33 
     34 
     35 
     36 OPTIONS
     37 -------
     38 
     39 
     40 
     41 **--version**
     42 
     43  Print the version number of LLVM.
     44 
     45 
     46 
     47 **-help**
     48 
     49  Print a summary of **llvm-config** arguments.
     50 
     51 
     52 
     53 **--prefix**
     54 
     55  Print the installation prefix for LLVM.
     56 
     57 
     58 
     59 **--src-root**
     60 
     61  Print the source root from which LLVM was built.
     62 
     63 
     64 
     65 **--obj-root**
     66 
     67  Print the object root used to build LLVM.
     68 
     69 
     70 
     71 **--bindir**
     72 
     73  Print the installation directory for LLVM binaries.
     74 
     75 
     76 
     77 **--includedir**
     78 
     79  Print the installation directory for LLVM headers.
     80 
     81 
     82 
     83 **--libdir**
     84 
     85  Print the installation directory for LLVM libraries.
     86 
     87 
     88 
     89 **--cxxflags**
     90 
     91  Print the C++ compiler flags needed to use LLVM headers.
     92 
     93 
     94 
     95 **--ldflags**
     96 
     97  Print the flags needed to link against LLVM libraries.
     98 
     99 
    100 
    101 **--libs**
    102 
    103  Print all the libraries needed to link against the specified LLVM
    104  *components*, including any dependencies.
    105 
    106 
    107 
    108 **--libnames**
    109 
    110  Similar to **--libs**, but prints the bare filenames of the libraries
    111  without **-l** or pathnames.  Useful for linking against a not-yet-installed
    112  copy of LLVM.
    113 
    114 
    115 
    116 **--libfiles**
    117 
    118  Similar to **--libs**, but print the full path to each library file.  This is
    119  useful when creating makefile dependencies, to ensure that a tool is relinked if
    120  any library it uses changes.
    121 
    122 
    123 
    124 **--components**
    125 
    126  Print all valid component names.
    127 
    128 
    129 
    130 **--targets-built**
    131 
    132  Print the component names for all targets supported by this copy of LLVM.
    133 
    134 
    135 
    136 **--build-mode**
    137 
    138  Print the build mode used when LLVM was built (e.g. Debug or Release)
    139 
    140 
    141 
    142 
    143 COMPONENTS
    144 ----------
    145 
    146 
    147 To print a list of all available components, run **llvm-config
    148 --components**.  In most cases, components correspond directly to LLVM
    149 libraries.  Useful "virtual" components include:
    150 
    151 
    152 **all**
    153 
    154  Includes all LLVM libraries.  The default if no components are specified.
    155 
    156 
    157 
    158 **backend**
    159 
    160  Includes either a native backend or the C backend.
    161 
    162 
    163 
    164 **engine**
    165 
    166  Includes either a native JIT or the bitcode interpreter.
    167 
    168 
    169 
    170 
    171 EXIT STATUS
    172 -----------
    173 
    174 
    175 If **llvm-config** succeeds, it will exit with 0.  Otherwise, if an error
    176 occurs, it will exit with a non-zero value.
    177