boost{175,176,177,178,179,180}: fix build with libc++ 15+

libc++ 15 dropped support for `std::unary_function` and
`std::binary_function` in C++17 and C++20. C++17 is the default for
clang 16, but clang 15 is also affected in those language modes.

This incompatibility is fixed in Boost 1.81, but the late patch for
Boost 1.80 applies to earlier versions and allows those versions to
build with clang 16 (and clang 15 in the affected modes).

1 files changed, 10 insertions, 1 deletions

diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index 3b7aa4e464b20..09160bdcc8d28 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -109,7 +109,16 @@ stdenv.mkDerivation {
     url = "https://github.com/boostorg/math/commit/7d482f6ebc356e6ec455ccb5f51a23971bf6ce5b.patch";
     relative = "include";
     sha256 = "sha256-KlmIbixcds6GyKYt1fx5BxDIrU7msrgDdYo9Va/KJR4=";
-  });
+  })
+  ++ lib.optionals (lib.versionOlder version "1.81") [
+    # libc++ 15 dropped support for `std::unary_function` and `std::binary_function` in C++17+.
+    # C++17 is the default for clang 16, but clang 15 is also affected in that language mode.
+    # This patch is for Boost 1.80, but it also applies to earlier versions.
+    (fetchpatch {
+      url = "https://www.boost.org/patches/1_80_0/0005-config-libcpp15.patch";
+      hash = "sha256-ULFMzKphv70unvPZ3o4vSP/01/xbSM9a2TlIV67eXDQ=";
+    })
+  ];
 
   meta = with lib; {
     homepage = "http://boost.org/";