X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=docs%2FGCCFEBuildInstrs.html;h=097bd3de6a2693215829a81424df9f403bd502a5;hb=6fa1c051dc515b6fd1f9a26ac12fed985469bff5;hp=80863f6b626b4da97e7a477c87f199d2da71b1fc;hpb=d918b7e915230047a669661c649cbbb03490a442;p=oota-llvm.git diff --git a/docs/GCCFEBuildInstrs.html b/docs/GCCFEBuildInstrs.html index 80863f6b626..097bd3de6a2 100644 --- a/docs/GCCFEBuildInstrs.html +++ b/docs/GCCFEBuildInstrs.html @@ -29,29 +29,20 @@
-

This section describes how to acquire and build llvm-gcc 4.0 and 4.2, which are -based on the GCC 4.0.1/4.2.1 front-ends respectively. Both front-ends support C, -C++, Objective-C and Objective-C++. The 4.2 front-end also supports Ada and -Fortran to some extent. Note that the instructions for building these front-ends -are completely different (and much easier!) than those for building llvm-gcc3 in -the past.

+

This section describes how to acquire and build llvm-gcc 4.2, which is based +on the GCC 4.2.1 front-end. Supported languages are Ada, C, C++, Fortran, +Objective-C and Objective-C++. Note that the instructions for building these +front-ends are completely different (and much easier!) than those for building +llvm-gcc3 in the past.

    -

  1. Retrieve the appropriate llvm-gcc4.x-y.z.source.tar.gz archive from the +

  2. Retrieve the appropriate llvm-gcc-4.2-x.y.source.tar.gz archive from the llvm web site.

    It is also possible to download the sources of the llvm-gcc front end - from a read-only mirror using subversion. To check out the 4.0 code + from a read-only mirror using subversion. To check out the 4.2 code for first time use:

    -
    -
    -svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.0/trunk dst-directory
-
    -
    - -

    To check out the 4.2 code use:

    - 
     svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk dst-directory
@@ -93,19 +84,17 @@ top-level README.LLVM file, adding ",ada" to EXTRALANGS, for example:
   
  3. The build requires having a compiler that supports Ada, C and C++.
       The Ada front-end is written in Ada so an Ada compiler is needed to
       build it.  Compilers known to work with the
-      LLVM 2.2 release
+      LLVM 2.3 release
       are gcc-4.2 and the
-      2005 GNAT GPL Edition.
-      LLVM from subversion
-      also works with the
-      2006 and 2007 GNAT GPL Editions.
+      2005, 2006 and 2007 versions of the
+      GNAT GPL Edition.
       The LLVM parts of llvm-gcc are written in C++ so a C++ compiler is
       needed to build them.  The rest of gcc is written in C.
       Some linux distributions provide a version of gcc that supports all
       three languages (the Ada part often comes as an add-on package to
       the rest of gcc).  Otherwise it is possible to combine two versions
       of gcc, one that supports Ada and C (such as the
-      2005 GNAT GPL Edition)
+      2007 GNAT GPL Edition)
       and another which supports C++, see below.
    4. 
   
  4. Because the Ada front-end is experimental, it is wise to build the
       compiler with checking enabled.  This causes it to run much slower, but
@@ -121,9 +110,9 @@ top-level README.LLVM file, adding ",ada" to EXTRALANGS, for example:
       and unpack it:
    
 
 
    
-
    wget http://llvm.org/releases/2.2/llvm-2.2.tar.gz
-tar xzf llvm-2.2.tar.gz
-mv llvm-2.2 llvm
    
+
    wget http://llvm.org/releases/2.3/llvm-2.3.tar.gz
+tar xzf llvm-2.3.tar.gz
+mv llvm-2.3 llvm
    
 
    
 
       
    or check out the
@@ -139,9 +128,9 @@ mv llvm-2.2 llvm
    5. and unpack it:

    -
    wget http://llvm.org/releases/2.2/llvm-gcc4.2-2.2.source.tar.gz
-tar xzf llvm-gcc4.2-2.2.source.tar.gz
-mv llvm-gcc4.2-2.2.source llvm-gcc-4.2
    +
    wget http://llvm.org/releases/2.3/llvm-gcc-4.2-2.3.source.tar.gz
+tar xzf llvm-gcc-4.2-2.3.source.tar.gz
+mv llvm-gcc4.2-2.3.source llvm-gcc-4.2

    or check out the @@ -186,7 +175,7 @@ cd llvm-objects

  5. Install LLVM (optional):

    -
    make install
    +
    make ENABLE_OPTIMIZED=0 install
    6. @@ -203,12 +192,12 @@ cd llvm-gcc-4.2-objects

  6. Configure llvm-gcc (here it is configured to install into /usr/local). The --enable-checking flag turns on sanity checks inside the compiler. - If you omit it then LLVM must be built with make ENABLE_OPTIMIZED=1. + If you omit it then LLVM should be built with make ENABLE_OPTIMIZED=1. Additional languages can be appended to the --enable-languages switch, for example --enable-languages=ada,c,c++.

    -
    ../llvm-gcc-4.2/configure --prefix=/usr/local --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-shared --disable-bootstrap --disable-multilib
    +
    ../llvm-gcc-4.2/configure --prefix=/usr/local --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-bootstrap --disable-multilib

    If you have a multi-compiler setup, then you can configure like this:

    @@ -217,7 +206,7 @@ cd llvm-gcc-4.2-objects 
     export CC=PATH_TO_C_AND_ADA_COMPILER
 export CXX=PATH_TO_C++_COMPILER
-../llvm-gcc-4.2/configure --prefix=/usr/local --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-shared --disable-bootstrap --disable-multilib
    +../llvm-gcc-4.2/configure --prefix=/usr/local --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-bootstrap --disable-multilib