Author: matthew Date: 2005-11-06 11:47:51 -0700 (Sun, 06 Nov 2005) New Revision: 7131
Modified: trunk/BOOK/chapter01/changelog.xml trunk/BOOK/chapter05/binutils-pass1.xml trunk/BOOK/chapter05/binutils-pass2.xml trunk/BOOK/chapter05/gcc-pass1.xml trunk/BOOK/chapter05/gcc-pass2.xml trunk/BOOK/chapter05/glibc.xml trunk/BOOK/chapter06/binutils.xml trunk/BOOK/chapter06/gcc.xml trunk/BOOK/chapter06/glibc.xml trunk/BOOK/chapter06/introduction.xml Log: Remove optimization related warnings from the toolchain packages Modified: trunk/BOOK/chapter01/changelog.xml =================================================================== --- trunk/BOOK/chapter01/changelog.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter01/changelog.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -116,6 +116,9 @@ </itemizedlist> </listitem> +<listitem><para>November 6, 2005 [matt]: Remove the optimization related +warnings from the toolchain packages (bug 1650).</para></listitem> + <listitem><para>November 6, 2005 [matt]: Install Vim's documentation to <filename class="directory">/usr/share/doc/vim-&vim-version;</filename> instead of <filename class="directory">/usr/share/vim/vim64/doc</filename> (bug 1610). Modified: trunk/BOOK/chapter05/binutils-pass1.xml =================================================================== --- trunk/BOOK/chapter05/binutils-pass1.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter05/binutils-pass1.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -34,13 +34,6 @@ linker and assembler to determine which of their own features to enable.</para> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building Binutils.</para> - <para>The Binutils documentation recommends building Binutils outside of the source directory in a dedicated build directory:</para> Modified: trunk/BOOK/chapter05/binutils-pass2.xml =================================================================== --- trunk/BOOK/chapter05/binutils-pass2.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter05/binutils-pass2.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -33,13 +33,6 @@ <sect2 role="installation"> <title>Re-installation of Binutils</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building Binutils.</para> - <para>Create a separate build directory again:</para> <screen><userinput>mkdir -v ../binutils-build Modified: trunk/BOOK/chapter05/gcc-pass1.xml =================================================================== --- trunk/BOOK/chapter05/gcc-pass1.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter05/gcc-pass1.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -29,13 +29,6 @@ <sect2 role="installation"> <title>Installation of GCC</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building GCC.</para> - <para>The GCC documentation recommends building GCC outside of the source directory in a dedicated build directory:</para> Modified: trunk/BOOK/chapter05/gcc-pass2.xml =================================================================== --- trunk/BOOK/chapter05/gcc-pass2.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter05/gcc-pass2.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -28,13 +28,6 @@ <sect2 role="installation"> <title>Re-installation of GCC</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building GCC.</para> - <para>The tools required to test GCC and Binutils—Tcl, Expect and DejaGNU—are installed now. GCC and Binutils can now be rebuilt, linking them against the new Glibc and testing them properly Modified: trunk/BOOK/chapter05/glibc.xml =================================================================== --- trunk/BOOK/chapter05/glibc.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter05/glibc.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -29,17 +29,6 @@ <sect2 role="installation"> <title>Installation of Glibc</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building Glibc.</para> - -<para>It should be noted that compiling Glibc in any way other than -the method suggested in this book puts the stability of the system at -risk.</para> - <para>The Glibc documentation recommends building Glibc outside of the source directory in a dedicated build directory:</para> Modified: trunk/BOOK/chapter06/binutils.xml =================================================================== --- trunk/BOOK/chapter06/binutils.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter06/binutils.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -31,13 +31,6 @@ <sect2 role="installation"> <title>Installation of Binutils</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building Binutils.</para> - <para>Verify that the PTYs are working properly inside the chroot environment. Check that everything is set up correctly by performing a simple test:</para> Modified: trunk/BOOK/chapter06/gcc.xml =================================================================== --- trunk/BOOK/chapter06/gcc.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter06/gcc.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -31,13 +31,6 @@ <sect2 role="installation"> <title>Installation of GCC</title> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building GCC.</para> - <para>Apply a <command>sed</command> substitution that will suppress the installation of <filename class="libraryfile">libiberty.a</filename>. The version of <filename class="libraryfile">libiberty.a</filename> provided by Modified: trunk/BOOK/chapter06/glibc.xml =================================================================== --- trunk/BOOK/chapter06/glibc.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter06/glibc.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -42,13 +42,6 @@ convert from/to Unicode, therefore libiconv is not required on an LFS system.</para></note> -<para>This package is known to have issues when its default -optimization flags (including the <parameter>-march</parameter> and -<parameter>-mcpu</parameter> options) are changed. If any environment -variables that override default optimizations have been defined, such -as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>, -unset them when building Glibc.</para> - <para>The Glibc build system is self-contained and will install perfectly, even though the compiler specs file and linker are still pointing at <filename class="directory">/tools</filename>. The specs Modified: trunk/BOOK/chapter06/introduction.xml =================================================================== --- trunk/BOOK/chapter06/introduction.xml 2005-11-06 18:37:36 UTC (rev 7130) +++ trunk/BOOK/chapter06/introduction.xml 2005-11-06 18:47:51 UTC (rev 7131) @@ -31,11 +31,13 @@ optimization and see if that fixes the problem. Even if the package does compile when using optimization, there is the risk it may have been compiled incorrectly because of the complex interactions between -the code and build tools. The small potential gains achieved in using -compiler optimizations are often outweighed by the risks. First-time -builders of LFS are encouraged to build without custom optimizations. -The subsequent system will still run very fast and be stable at the -same time.</para> +the code and build tools. Also note that the <option>-march</option> +and <option>-mtune</option> options may cause problems with the +toolchain packages (Binutils, GCC and Glibc). The small potential +gains achieved in using compiler optimizations are often outweighed by +the risks. First-time builders of LFS are encouraged to build without +custom optimizations. The subsequent system will still run very fast +and be stable at the same time.</para> <para>The order that packages are installed in this chapter needs to be strictly followed to ensure that no program accidentally acquires a -- http://linuxfromscratch.org/mailman/listinfo/lfs-book FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
