[MacPorts] LibcxxOnOlderSystems modified

[MacPorts]

Page "LibcxxOnOlderSystems" was changed by jeremyhu
Diff URL: <https://trac.macports.org/wiki/LibcxxOnOlderSystems?action=diff&version=50>
Revision 50
Comment: Changes for clang-3.8 and Leopard
Changes:
-------8<------8<------8<------8<------8<------8<------8<------8<--------
Index: LibcxxOnOlderSystems
=========================================================================
--- LibcxxOnOlderSystems (version: 49)
+++ LibcxxOnOlderSystems (version: 50)
@@ -69,7 +69,7 @@
 {{{
 sudo port -v -f uninstall inactive
 }}}
-4. Build a newer clang using libc++ (note: this will also install clang-3.7 as a build dependency):
+4. Install clang-3.7 against libc++.  Note that clang-3.7 is installed here because clang-3.8 has extra dependencies.  You might be able to use clang-3.8 here, but I haven't tried that yet.  Please report back.
 {{{
 sudo port -v install clang-3.7
 }}}
@@ -82,23 +82,31 @@
 {{{
 default_compilers  macports-clang-3.7 macports-clang-3.4 macports-clang-3.3 gcc-4.2 apple-gcc-4.2 gcc-4.0
 }}}
-7. Rebuild cctools and ld64 to use the newer version of llvm:
+7. Rebuild cctools and ld64 to use the newer version of llvm (currently llvm-3.8):
 {{{
-sudo port -v -n upgrade --enforce-variants cctools -llvm33 -llvm34
-sudo port -v upgrade --enforce-variants ld64 -llvm33 -llvm34
+sudo port -v -n upgrade --force --enforce-variants cctools -llvm33 -llvm34
+sudo port -v -n upgrade --force --enforce-variants ld64 -llvm33 -llvm34
 }}}
-8. Disable the variants corresponding to the older versions of ld64 in `/opt/local/etc/macports/variants.conf`.  This ensures that ld64 will be reinstalled using the appropriate variants in the future:
+8. **Snow Leopard Only:** Disable the variants corresponding to the older versions of ld64 in `/opt/local/etc/macports/variants.conf`.  This ensures that ld64 will be reinstalled using the appropriate variants in the future:
 {{{
 -ld64_97
 -ld64_127
 -ld64_136
 -ld64_236
 }}}
-9. Reinstall ld64 with the legacy variants disabled to use ld64-latest as the default linker:
+9. **Snow Leopard Only:** Reinstall ld64 with the legacy variants disabled to use ld64-latest as the default linker:
 {{{
 sudo port -v upgrade --enforce-variants ld64 -ld64_97 -ld64_127 -ld64_136 -ld64_236
 }}}
-10. Uninstall the bootstrap toolchain:
+10. Install clang-3.8
+{{{
+sudo port -v install clang-3.7
+}}}
+11. Edit `/opt/local/etc/macports/macports.conf` again to add `macports-clang-3.8` as preferred compiler:
+{{{
+default_compilers macports-clang-3.8 macports-clang-3.7 macports-clang-3.4 macports-clang-3.3 gcc-4.2 apple-gcc-4.2 gcc-4.0
+}}}
+12. Uninstall the bootstrap toolchain:
 {{{
 sudo port -v deactivate llvm-3.4 clang-3.4
 sudo port -v uninstall inactive
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--
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