Tag and adjust gcc instructions for 7.4

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@11775 af4574ff-66df-0310-9fd7-8a98e5e911e0

general/prog/gcc.xml

@@ -44,7 +44,7 @@
     Many consider the Iced Tea version to be a more robust Java environment
     than the one provided by <application>GCC</application>.</para>
 
-    &lfs73_checked;
+    &lfs74_checked;
 
     <caution>
       <para>If you are upgrading <application>GCC</application> from any other
@@ -203,20 +203,29 @@ esac &amp;&amp;
 mkdir ../gcc-build &amp;&amp;
 cd    ../gcc-build &amp;&amp;
 
-../gcc-&gcc-version;/configure         \
-    --prefix=/usr              \
-    --libdir=/usr/lib          \
-    --libexecdir=/usr/lib      \
-    --with-system-zlib         \
-    --enable-shared            \
-    --enable-threads=posix     \
-    --enable-__cxa_atexit      \
-    --disable-multilib         \
-    --enable-clocale=gnu       \
-    --enable-lto               \
+../gcc-&gcc-version;/configure          \
+    --prefix=/usr               \
+    --libdir=/usr/lib           \
+    --libexecdir=/usr/lib       \
+    --enable-shared             \
+    --enable-threads=posix      \
+    --enable-__cxa_atexit       \
+    --disable-multilib          \
+    --disable-bootstrap         \
+    --disable-install-libiberty \
+    --with-system-zlib          \
+    --enable-clocale=gnu        \
+    --enable-lto                \
     --enable-languages=c,c++,fortran,ada,go,java,objc,obj-c++ &amp;&amp;
+make
+</userinput></screen>
 
-make            &amp;&amp;
+    <para>If you have installed additional packages such as valgrind and gdb,
+    the gcc part of the testsuite will run more tests than in LFS. 
+    Some of those will report FAIL and others XPASS (pass when expected
+    to FAIL).  To run the checks:</para>
+
+<screen><userinput>
 ulimit -s 32768 &amp;&amp;
 make -k check   &amp;&amp;