Ticket #35172: Portfile.patch

Portfile

@@ -39 +39 @@
 post-patch {
     reinplace "s|%%CONFIGURE.CC%%|${configure.cc}|g" ${worksrcpath}/tools/build/v2/engine/build.sh
     reinplace "s|%%CONFIGURE.CC%%|${configure.cc}|g" ${worksrcpath}/tools/build/v2/engine/build.jam
+    # When building i386 code with apple-gcc-4.2, boost-1.50.0 adds a '-march=i386' compiler flag
+    # which breaks the atomic intrinsics. The earliest 32-bit intel processors that Apple made
+    # were the Core Solo and Core Duo, so we use the "prescott" architecture for them as per
+    # (http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel#Intel_Core_Solo.2FDuo.2C_Pentium_Dual-Core_T20xx.2FT21xx)
+    # to fix broken 32-bit builds as per (https://trac.macports.org/ticket/35172).
+    reinplace "s|-march=i386|-march=prescott|g" ${worksrcpath}/tools/build/v2/tools/gcc.jam
 }
 
 proc write_jam s {
@@ -176 +182 @@
     }]
 }
 
+default_variants +no_single +no_static
+
 variant debug description {Builds debug versions of the libraries as well} {
     build.args-delete   variant=release
     build.args-append   variant=debug,release