Fix 32bit depends builds

Add architecture flags when cmake invokes gcc manually.
Add 32bit to Travis.

.travis.yml

@@ -26,6 +26,8 @@ env:
     - HOST=arm-linux-gnueabihf PACKAGES="gperf g++-arm-linux-gnueabihf"
 # ARM v8
     - HOST=aarch64-linux-gnu PACKAGES="gperf g++-aarch64-linux-gnu"
+# i686 Win
+    - HOST=i686-w64-mingw32 PACKAGES="python3 nsis g++-mingw-w64-i686"
 # i686 Linux
     - HOST=i686-pc-linux-gnu PACKAGES="gperf cmake g++-multilib bc python3-zmq" RUN_TESTS=true
 # Win64

contrib/depends/toolchain.cmake.in

@@ -78,5 +78,9 @@ elseif(ARCHITECTURE STREQUAL "aarch64")
   set(BUILD_64 ON)
 endif()
 
+if(ARCHITECTURE STREQUAL "i686" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  SET(LINUX_32 ON)
+endif()
+
 #Create a new global cmake flag that indicates building with depends
 set (DEPENDS true)

src/blockchain_utilities/CMakeLists.txt

@@ -32,6 +32,8 @@ if(PER_BLOCK_CHECKPOINT)
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} --target=x86_64-apple-darwin11 -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
   elseif(APPLE AND NOT DEPENDS)
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
+  elseif(LINUX_32)
+    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
   else()
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
   endif()

src/blocks/CMakeLists.txt

@@ -30,9 +30,15 @@ if(APPLE)
     add_library(blocks STATIC blockexports.c)
     set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
 else()
-    add_custom_command(OUTPUT blocks.o MAIN_DEPENDENCY blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
-    add_custom_command(OUTPUT testnet_blocks.o MAIN_DEPENDENCY testnet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
-    add_custom_command(OUTPUT stagenet_blocks.o MAIN_DEPENDENCY stagenet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/stagenet_blocks.o stagenet_blocks.dat)
+    if(LINUX_32)
+        add_custom_command(OUTPUT blocks.o MAIN_DEPENDENCY blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
+        add_custom_command(OUTPUT testnet_blocks.o MAIN_DEPENDENCY testnet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
+        add_custom_command(OUTPUT stagenet_blocks.o MAIN_DEPENDENCY stagenet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/stagenet_blocks.o stagenet_blocks.dat)
+    else()
+        add_custom_command(OUTPUT blocks.o MAIN_DEPENDENCY blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
+        add_custom_command(OUTPUT testnet_blocks.o MAIN_DEPENDENCY testnet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
+        add_custom_command(OUTPUT stagenet_blocks.o MAIN_DEPENDENCY stagenet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/stagenet_blocks.o stagenet_blocks.dat)
+    endif()
     add_library(blocks STATIC blocks.o testnet_blocks.o stagenet_blocks.o blockexports.c)
     set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
 endif()

src/daemon/CMakeLists.txt

@@ -32,6 +32,8 @@ if(PER_BLOCK_CHECKPOINT)
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} --target=x86_64-apple-darwin11 -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
   elseif(APPLE AND NOT DEPENDS)
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
+  elseif(LINUX_32)
+    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
   else()
     add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
   endif()