cmake: blacklist clang < 3.4 for libc++

CMake fails to compile with clang < 3.4 against libc++ due to a compiler bug. Blacklist old clang compilers. See: https://cmake.org/Bug/view.php?id=15039 Closes: https://trac.macports.org/ticket/44129
macports · Feb 9, 2017 · 9eb9d7b · 9eb9d7b
1 parent d311a69
commit 9eb9d7b
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/devel/cmake/Portfile b/devel/cmake/Portfile
@@ -2,6 +2,7 @@
 
 PortSystem          1.0
 PortGroup           muniversal 1.0
+PortGroup           compiler_blacklist_versions 1.0
 
 name                cmake
 
@@ -105,6 +106,14 @@ configure.env-append \
                     CMAKE_INCLUDE_PATH=${prefix}/include/ncurses \
                     CMAKE_LIBRARY_PATH=${prefix}/lib
 
+# when using libc++, require Clang 3.4 or newer; Clang 3.3 produces
+# bad stream reading code. See also MP ticket #44129:
+# < https://trac.macports.org/ticket/44129 >
+
+if {${configure.cxx_stdlib} eq "libc++"} {
+    compiler.blacklist-append *gcc* {clang < 500} macports-clang-3.3
+}
+
 platform darwin {
     configure.env-append \
                     CMAKE_OSX_DEPLOYMENT_TARGET="${macosx_deployment_target}"