Run Cmake without changing to the build folder.

ports/ci/appveyor/build.bat

@@ -23,65 +23,63 @@ echo Building x64 virtual camera driver
 echo.
 
 mkdir build-x64
-cd build-x64
 setlocal
 
 if "%CMAKE_GENERATOR%" == "MSYS Makefiles" set PATH=C:\msys64\mingw64\bin;C:\msys64\usr\bin;%PATH%
 if "%CMAKE_GENERATOR%" == "MSYS Makefiles" (
     cmake ^
+        -S . ^
+        -B build-x64 ^
         -G "%CMAKE_GENERATOR%" ^
         -DCMAKE_BUILD_TYPE=Release ^
-        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-        ..
-    cmake --build .
-    cmake --build . --target install
+        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+    cmake --build build-x64
+    cmake --build build-x64 --target install
 )
 
 endlocal
 
 if "%CMAKE_GENERATOR:~0,13%" == "Visual Studio" (
     cmake ^
+        -S . ^
+        -B build-x64 ^
         -G "%CMAKE_GENERATOR%" ^
         -A x64 ^
         -DCMAKE_BUILD_TYPE=Release ^
-        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-        ..
-    cmake --build . --config Release
-    cmake --build . --config Release --target install
+        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+    cmake --build build-x64 --config Release
+    cmake --build build-x64 --config Release --target install
 )
 
-cd ..
-
 echo.
 echo Building x86 virtual camera driver
 echo.
 
 mkdir build-x86
-cd build-x86
 setlocal
 
 if "%CMAKE_GENERATOR%" == "MSYS Makefiles" set PATH=C:\msys64\mingw32\bin;C:\msys64\usr\bin;%PATH%
 if "%CMAKE_GENERATOR%" == "MSYS Makefiles" (
     cmake ^
+        -S . ^
+        -B build-x86 ^
         -G "%CMAKE_GENERATOR%" ^
         -DCMAKE_BUILD_TYPE=Release ^
-        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-        ..
-    cmake --build .
-    cmake --build . --target install
+        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+    cmake --build build-x86
+    cmake --build build-x86 --target install
 )
 
 endlocal
 
 if "%CMAKE_GENERATOR:~0,13%" == "Visual Studio" (
     cmake ^
+        -S . ^
+        -B build-x86 ^
         -G "%CMAKE_GENERATOR%" ^
         -A Win32 ^
         -DCMAKE_BUILD_TYPE=Release ^
-        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-        ..
-    cmake --build . --config Release
-    cmake --build . --config Release --target install
+        -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+    cmake --build build-x86 --config Release
+    cmake --build build-x86 --config Release --target install
 )
-
-cd ..

ports/ci/linux-mingw/build.sh

@@ -34,23 +34,25 @@ echo
 echo "Building x64 virtual camera driver"
 echo
 mkdir build-x64
-cd build-x64
 x86_64-w64-mingw32-cmake \
+    -S . \
+    -B build-x64 \
     -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}" \
-    ..
-cmake --build .
-cd ..
+    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}"
+cmake --build build-x64
+cmake --build build-x64 --target install
 echo
 echo "Building x86 virtual camera driver"
 echo
 mkdir build-x86
 cd build-x86
 i686-w64-mingw32-cmake \
+    -S . \
+    -B build-x86 \
     -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}" \
-    ..
-cmake --build .
+    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}"
+cmake --build build-x86
+cmake --build build-x86 --target install
 EOF
 chmod +x ${BUILDSCRIPT}
 sudo cp -vf ${BUILDSCRIPT} "root.x86_64/$HOME/"

ports/ci/linux-mingw/deploy.sh

@@ -54,13 +54,6 @@ EOF
 fi
 
 cat << EOF >> ${DEPLOYSCRIPT}
-cd build-x64
-cmake --build . --target install
-cd ..
-cd build-x86
-cmake --build . --target install
-cd ..
-
 i686-w64-mingw32-strip \${INSTALL_PREFIX}/x86/*
 x86_64-w64-mingw32-strip \${INSTALL_PREFIX}/x64/*
 

ports/ci/mac/build.sh

@@ -22,9 +22,10 @@ SOURCES_DIR=${PWD}
 INSTALL_PREFIX=${SOURCES_DIR}/webcamoid-data
 
 mkdir build
-cd build
 cmake \
+    -S . \
+    -B build \
     -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}" \
-    ..
-cmake --build .
+    -DCMAKE_INSTALL_PREFIX="${INSTALL_PREFIX}"
+cmake --build build
+cmake --build build --target install

ports/ci/mac/deploy.sh

@@ -22,10 +22,6 @@ SOURCES_DIR=${PWD}
 
 git clone https://github.com/webcamoid/DeployTools.git
 
-cd build
-cmake --build . --target install
-cd ..
-
 export INSTALL_PREFIX="${SOURCES_DIR}/webcamoid-data"
 export PACKAGES_DIR="${SOURCES_DIR}/webcamoid-packages"
 export PYTHONPATH="${SOURCES_DIR}/DeployTools"

ports/ci/windows-vs/build.bat

@@ -24,33 +24,29 @@ echo Building x64 virtual camera driver
 echo.
 
 mkdir build-x64
-cd build-x64
 
 cmake ^
+    -S . ^
+    -B build-x64 ^
     -G "%CMAKE_GENERATOR%" ^
     -A x64 ^
     -DCMAKE_BUILD_TYPE=Release ^
-    -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-    ..
-cmake --build . --config Release
-cmake --build . --config Release --target install
-
-cd ..
+    -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+cmake --build build-x64 --config Release
+cmake --build build-x64 --config Release --target install
 
 echo.
 echo Building x86 virtual camera driver
 echo.
 
 mkdir build-x86
-cd build-x86
 
 cmake ^
+    -S . ^
+    -B build-x86 ^
     -G "%CMAKE_GENERATOR%" ^
     -A Win32 ^
     -DCMAKE_BUILD_TYPE=Release ^
-    -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%" ^
-    ..
-cmake --build . --config Release
-cmake --build . --config Release --target install
-
-cd ..
+    -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
+cmake --build build-x86 --config Release
+cmake --build build-x86 --config Release --target install