Pass old style boost search option to cmake only on appveyor.

Author: redboltz

appveyor.yml

@@ -9,7 +9,7 @@ environment:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       cpp11: -DMSGPACK_CXX11=ON
       msvc: '"Visual Studio 14 2015"'
-      boost_prefix: C:\Libraries\boost_1_86_0
+      boost_prefix: C:\Libraries\boost_1_69_0
       boost_subdir: lib32-msvc-14.0
 build_script:
   - ps: |
@@ -37,29 +37,21 @@ build_script:
       cd build
 
       # Debug: Check Boost directories
-      Write-Host "=== Checking C:\Libraries for Boost installations ==="
-      dir C:\Libraries\boost* | Format-Table Name
+      Write-Host "=== Checking Boost installation at $env:boost_prefix ==="
+      if (Test-Path "$env:boost_prefix") {
+          Write-Host "Boost directory found!"
+          Write-Host "Top-level contents:"
+          dir $env:boost_prefix | Format-Table Name -AutoSize
 
-      Write-Host "=== Checking if boost_1_86_0 exists ==="
-      if (Test-Path "C:\Libraries\boost_1_86_0") {
-          Write-Host "boost_1_86_0 found!"
-          dir C:\Libraries\boost_1_86_0 | Format-Table Name
-
-          Write-Host "=== Checking lib32-msvc-14.0 ==="
-          if (Test-Path "C:\Libraries\boost_1_86_0\lib32-msvc-14.0") {
-              dir C:\Libraries\boost_1_86_0\lib32-msvc-14.0
-
-              Write-Host "=== Checking cmake directory ==="
-              if (Test-Path "C:\Libraries\boost_1_86_0\lib32-msvc-14.0\cmake") {
-                  dir C:\Libraries\boost_1_86_0\lib32-msvc-14.0\cmake
-              } else {
-                  Write-Host "cmake directory not found in lib32-msvc-14.0"
-              }
+          Write-Host "=== Checking $env:boost_subdir ==="
+          if (Test-Path "$env:boost_prefix\$env:boost_subdir") {
+              Write-Host "Library directory found!"
+              dir "$env:boost_prefix\$env:boost_subdir" | Select-Object -First 10
           } else {
-              Write-Host "lib32-msvc-14.0 not found"
+              Write-Host "$env:boost_subdir not found"
           }
       } else {
-          Write-Host "boost_1_86_0 NOT found!"
+          Write-Host "ERROR: Boost directory NOT found at $env:boost_prefix"
       }
 
       Write-Host "=== Starting CMake configuration ==="
@@ -69,8 +61,9 @@ build_script:
           $env:cpp11 `
           -D MSGPACK_BUILD_EXAMPLES=ON `
           -D MSGPACK_BUILD_TESTS=ON `
+          -D Boost_NO_BOOST_CMAKE=ON `
           -D CMAKE_EXE_LINKER_FLAGS=/LIBPATH:"$env:boost_prefix\$env:boost_subdir" `
-          -D CMAKE_PREFIX_PATH="C:\Libraries\boost_1_86_0\lib32-msvc-14.0\cmake\Boost-1.86.0;$env:APPVEYOR_BUILD_FOLDER\zlib-1.3.1\prefix" `
+          -D CMAKE_PREFIX_PATH="$env:boost_prefix;$env:APPVEYOR_BUILD_FOLDER\zlib-1.3.1\prefix" `
           -D CMAKE_INSTALL_PREFIX="$env:APPVEYOR_BUILD_FOLDER\prefix" `
           -D CMAKE_CXX_FLAGS="/D_VARIADIC_MAX=10 /EHsc /DBOOST_ALL_DYN_LINK" `
           ..