diff options
Diffstat (limited to 'gcc/doc/install.texi')
| -rw-r--r-- | gcc/doc/install.texi | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index bfa336e2e9e..0fd68244ea7 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -356,6 +356,15 @@ Alternatively, if an MPC source distribution is found in a subdirectory of your GCC sources named @file{mpc}, it will be built together with GCC@. +@item libelf version 0.8.12 (or later) + +Necessary to build link-time optimization (LTO) support. It can be +downloaded from @uref{http://www.mr511.de/software/libelf-0.8.12.tar.gz}, +though it is commonly available in several systems. + +The @option{--with-libelf} configure option should be used if libelf is +not installed in your default library search patch. + @end table @heading Tools/packages necessary for modifying GCC @@ -1337,8 +1346,10 @@ powerpc-linux for powerpc64-linux, only generates 32-bit code. This option enables the 32-bit target to be a bi-arch compiler, which is useful when you want a bi-arch compiler that defaults to 32-bit, and you are building a bi-arch or multi-arch binutils in a combined tree. -Currently, this option only affects sparc-linux, powerpc-linux and -x86-linux. +On mips-linux, this will build a tri-arch compiler (ABI o32/n32/64), +defaulted to o32. +Currently, this option only affects sparc-linux, powerpc-linux, x86-linux +and mips-linux. @item --enable-secureplt This option enables @option{-msecure-plt} by default for powerpc-linux. @@ -1873,6 +1884,9 @@ not specified, then the Python modules are installed in $(prefix)/share/python. @item --enable-aot-compile-rpm Adds aot-compile-rpm to the list of installed scripts. +@item --enable-browser-plugin +Build the gcjwebplugin web browser plugin. + @table @code @item ansi Use the single-byte @code{char} and the Win32 A functions natively, @@ -1893,6 +1907,30 @@ Use the @code{WCHAR} and Win32 W functions natively. Does @emph{not} add @code{-lunicows} to @file{libgcj.spec}. The built executables will only run on Microsoft Windows NT and above. @end table + +@item --enable-lto +Enable support for link-time optimization (LTO). This is enabled by +default if a working libelf implementation is found (see +@option{--with-libelf}). + +@item --with-libelf=@var{pathname} +@itemx --with-libelf-include=@var{pathname} +@itemx --with-libelf-lib=@var{pathname} +If you do not have libelf installed in a standard location and you +want to enable support for link-time optimization (LTO), you can +explicitly specify the directory where libelf is installed +(@samp{--with-libelf=@var{libelfinstalldir}}). The +@option{--with-libelf=@var{libelfinstalldir}} option is shorthand for +@option{--with-libelf-include=@var{libelfinstalldir}/include} +@option{--with-libelf-lib=@var{libelfinstalldir}/lib}. + +@item --enable-gold +Enable support for using @command{gold} as the linker. If gold support is +enabled together with @option{--enable-lto}, an additional directory +@file{lto-plugin} will be built. The code in this directory is a +plugin for gold that allows the link-time optimizer to extract object +files with LTO information out of library archives. See +@option{-flto} and @option{-fwhopr} for details. @end table @subsubheading AWT-Specific Options @@ -2656,7 +2694,7 @@ incomplete or out of date. Send a note to @email{gcc@@gcc.gnu.org} detailing how the information should be changed. If you find a bug, please report it following the -@uref{../bugs.html,,bug reporting guidelines}. +@uref{../bugs/,,bug reporting guidelines}. If you want to print the GCC manuals, do @samp{cd @var{objdir}; make dvi}. You will need to have @command{texi2dvi} (version at least 4.7) @@ -3966,6 +4004,14 @@ Embedded PowerPC system in little endian mode. @html <hr /> @end html +@heading @anchor{rx-x-elf}rx-*-elf +The Renesas RX processor. See +@uref{http://eu.renesas.com/fmwk.jsp?cnt=rx600_series_landing.jsp&fp=/products/mpumcu/rx_family/rx600_series} +for more information about this processor. + +@html +<hr /> +@end html @heading @anchor{s390-x-linux}s390-*-linux* S/390 system running GNU/Linux for S/390@. |