gcc5: split $doc into $man and $info

... because cc-wrapper is meant to propagate man pages into user envs,
and info pages are rather large.

Also replace the duplicate g++ and gcc man1 pages by a symlink.

pkgs/build-support/cc-wrapper/default.nix

@@ -140,7 +140,7 @@ stdenv.mkDerivation {
       # Propagate the wrapped cc so that if you install the wrapper,
       # you get tools like gcov, the manpages, etc. as well (including
       # for binutils and Glibc).
-      echo ${cc} ${binutils_bin} ${libc_bin} > $out/nix-support/propagated-user-env-packages
+      echo ${cc} ${cc.man or ""} ${binutils_bin} ${libc_bin} > $out/nix-support/propagated-user-env-packages
 
       echo ${toString extraPackages} > $out/nix-support/propagated-native-build-inputs
     ''

pkgs/development/compilers/gcc/5/default.nix

@@ -215,7 +215,7 @@ stdenv.mkDerivation ({
 
   inherit patches;
 
-  outputs = [ "out" "lib" "doc" ];
+  outputs = [ "out" "lib" "man" "info" ];
   setOutputFlags = false;
   NIX_NO_SELF_RPATH = true;
 

pkgs/development/compilers/gcc/builder.sh

@@ -211,16 +211,14 @@ preInstall() {
 
 postInstall() {
     # Move runtime libraries to $lib.
-    mkdir -p $lib/lib
-    ln -s lib $lib/lib64
-    mv -v $out/lib/lib*.so $out/lib/lib*.so.*[0-9] $out/lib/*.la $lib/lib/
-    for i in $lib/lib/*.la; do
-        substituteInPlace $i --replace $out $lib
-    done
+    _moveToOutput "lib/lib*.so*" "$lib"
+    _moveToOutput "lib/lib*.la"  "$lib"
+    ln -s lib "$lib/lib64" # for *.la
+    _moveToOutput "share/gcc-*/python" "$lib"
 
-    # Remove precompiled headers for now.  They are very big and
-    # probably not very useful yet.
-    find $out/include -name "*.gch" -exec rm -rf {} \; -prune
+    for i in "$lib"/lib/*.{la,py}; do
+        substituteInPlace "$i" --replace "$out" "$lib"
+    done
 
     # Remove `fixincl' to prevent a retained dependency on the
     # previous gcc.
@@ -266,6 +264,9 @@ postInstall() {
     paxmark r $out/libexec/gcc/*/*/{cc1,cc1plus}
 
     eval "$postInstallGhdl"
+
+    # Two identical man pages are shipped (moving and compressing is done later)
+    ln -sf gcc.1 "$out"/share/man/man1/g++.1
 }
 
 genericBuild