From f77650a6ac0eb0336c7f34e63f9b3463bdd115b2 Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Fri, 13 Apr 2018 21:42:50 -0600
Subject: [PATCH] depends: Configure librustzcash for cross-compiling

---
 depends/packages/librustzcash.mk          | 15 +++++++++++++--
 depends/patches/librustzcash/cargo.config |  3 +++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/depends/packages/librustzcash.mk b/depends/packages/librustzcash.mk
index 46cf909f1..728378732 100644
--- a/depends/packages/librustzcash.mk
+++ b/depends/packages/librustzcash.mk
@@ -8,18 +8,29 @@ $(package)_git_commit=f5d2afb4eabac29b1b1cc860d66e45a5b48b4f88
 $(package)_dependencies=rust $(rust_crates)
 $(package)_patches=cargo.config
 
+ifeq ($(host_os),mingw32)
+$(package)_library_file=target/x86_64-pc-windows-gnu/release/rustzcash.lib
+else
+$(package)_library_file=target/release/librustzcash.a
+endif
+
+define $(package)_set_vars
+$(package)_build_opts=--frozen --release
+$(package)_build_opts_mingw32=--target=x86_64-pc-windows-gnu
+endef
+
 define $(package)_preprocess_cmds
   mkdir .cargo && \
   cat $($(package)_patch_dir)/cargo.config | sed 's|CRATE_REGISTRY|$(host_prefix)/$(CRATE_REGISTRY)|' > .cargo/config
 endef
 
 define $(package)_build_cmds
-  cargo build --frozen --release
+  cargo build $($(package)_build_opts)
 endef
 
 define $(package)_stage_cmds
   mkdir $($(package)_staging_dir)$(host_prefix)/lib/ && \
   mkdir $($(package)_staging_dir)$(host_prefix)/include/ && \
-  cp target/release/librustzcash.a $($(package)_staging_dir)$(host_prefix)/lib/ && \
+  cp $($(package)_library_file) $($(package)_staging_dir)$(host_prefix)/lib/ && \
   cp include/librustzcash.h $($(package)_staging_dir)$(host_prefix)/include/
 endef
diff --git a/depends/patches/librustzcash/cargo.config b/depends/patches/librustzcash/cargo.config
index 7696632a1..a54c9a4a8 100644
--- a/depends/patches/librustzcash/cargo.config
+++ b/depends/patches/librustzcash/cargo.config
@@ -13,3 +13,6 @@ replace-with = "vendored-sources"
 
 [source.vendored-sources]
 directory = "CRATE_REGISTRY"
+
+[target.x86_64-pc-windows-gnu]
+linker = "x86_64-w64-mingw32-gcc"