uhd: enable vcpkg support on windows

vcpkg can be used for the Windows C++ dependencies for uhd with this commit.

To use vcpkg on Windows:
1) Copy the custom triplets in host/cmake/vcpkg/ to the vcpkg/triplets/ folder.
2) Install boost and libusb for the custom triplet

"vcpkg install libusb:uhd-x64-windows-static-md boost:uhd-x64-windows-static-md"

3) Call CMake with vcpkg toolchain file flags:
-DVCPKG_TARGET_TRIPLET=uhd-x64-windows-static-md
-DCMAKE_TOOLCHAIN_FILE=%VCPKG_INSTALL_DIR%/scripts/buildsystems/vcpkg.cmake
-G "Visual Studio 16 2019" -A x64

Replace the -G with the installed version of Visual Studio and matching
architecture. Then build normally by running vcvarsall.bat and msbuild.

Signed-off-by: Steven Koo <steven.koo@ni.com>

3 files changed, 48 insertions, 6 deletions

diff --git a/host/cmake/Modules/UHDBoost.cmake b/host/cmake/Modules/UHDBoost.cmake
index 5ebb4acef..eed94cbfe 100644
--- a/host/cmake/Modules/UHDBoost.cmake
+++ b/host/cmake/Modules/UHDBoost.cmake
@@ -118,12 +118,26 @@ endif(UNIX AND NOT BOOST_ROOT AND EXISTS "/usr/lib64")
 
 # special Microsoft Visual C handling
 if(MSVC)
-    set(BOOST_ALL_DYN_LINK "${BOOST_ALL_DYN_LINK}" CACHE BOOL "boost enable dynamic linking")
-    if(BOOST_ALL_DYN_LINK)
-        add_definitions(-DBOOST_ALL_DYN_LINK) #setup boost auto-linking in msvc
-    else(BOOST_ALL_DYN_LINK)
-        set(UHD_BOOST_REQUIRED_COMPONENTS) #empty components list for static link
-    endif(BOOST_ALL_DYN_LINK)
+    if(VCPKG_TARGET_TRIPLET)
+        message(STATUS "  VCPKG Libs")
+        string(FIND ${VCPKG_TARGET_TRIPLET} "static" vcpkg_check_static)
+        string(FIND ${VCPKG_TARGET_TRIPLET} "static-md" vcpkg_check_static_md)
+        if((NOT vcpkg_check_static EQUAL -1) AND vcpkg_check_static_md EQUAL -1)
+            # Statically linked CRT
+            message(STATUS "  VCPKG static CRT triplet found. Configuring compiler flags.")
+            set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
+            set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
+        endif((NOT vcpkg_check_static EQUAL -1) AND vcpkg_check_static_md EQUAL -1)
+    else(VCPKG_TARGET_TRIPLET)
+        set(BOOST_ALL_DYN_LINK "${BOOST_ALL_DYN_LINK}" CACHE BOOL "boost enable dynamic linking")
+        if(BOOST_ALL_DYN_LINK)
+            message(STATUS "  Dynamic Libs")
+            add_definitions(-DBOOST_ALL_DYN_LINK) #setup boost auto-linking in msvc
+        else(BOOST_ALL_DYN_LINK)
+            message(STATUS "  Static Libs")
+            set(UHD_BOOST_REQUIRED_COMPONENTS) #empty components list for static link
+        endif(BOOST_ALL_DYN_LINK)
+    endif(VCPKG_TARGET_TRIPLET)
 endif(MSVC)
 
 # Starting in CMake 3.15.0, if policy 'CMP0093' is available and set
diff --git a/host/cmake/vcpkg/uhd-x64-windows-static-md.cmake b/host/cmake/vcpkg/uhd-x64-windows-static-md.cmake
new file mode 100644
index 000000000..ef577045d
--- /dev/null
+++ b/host/cmake/vcpkg/uhd-x64-windows-static-md.cmake
@@ -0,0 +1,14 @@
+set(VCPKG_TARGET_ARCHITECTURE x64)
+set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_LIBRARY_LINKAGE static)
+# uhd dynamic links for boost-test and libusb.
+# The other boost dependencies are static.
+# This maintains historical compatibility
+# with previous binaries.
+if (PORT STREQUAL boost-test)
+    set(VCPKG_LIBRARY_LINKAGE dynamic)
+endif()
+
+if (PORT STREQUAL libusb)
+    set(VCPKG_LIBRARY_LINKAGE dynamic)
+endif()
diff --git a/host/cmake/vcpkg/uhd-x86-windows-static-md.cmake b/host/cmake/vcpkg/uhd-x86-windows-static-md.cmake
new file mode 100644
index 000000000..c8d09179f
--- /dev/null
+++ b/host/cmake/vcpkg/uhd-x86-windows-static-md.cmake
@@ -0,0 +1,14 @@
+set(VCPKG_TARGET_ARCHITECTURE x86)
+set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_LIBRARY_LINKAGE static)
+# uhd dynamic links for boost-test and libusb.
+# The other boost dependencies are static.
+# This maintains historical compatibility
+# with previous binaries.
+if (PORT STREQUAL boost-test)
+    set(VCPKG_LIBRARY_LINKAGE dynamic)
+endif()
+
+if (PORT STREQUAL libusb)
+    set(VCPKG_LIBRARY_LINKAGE dynamic)
+endif()