Add support for build and link types for deps

Make dependencies build scripts more flexible, to accept a build type
(native or cross) and a link type (static or shared).

This lays the groundwork for building binaries for Linux and macOS.

PR #5515 <https://github.com/Genymobile/scrcpy/pull/5515>

app/deps/common

@@ -2,15 +2,34 @@
 # This file is intended to be sourced by other scripts, not executed
 
 process_args() {
-    if [[ $# != 1 ]]
+    if [[ $# != 3 ]]
     then
         # <host>: win32 or win64
-        echo "Syntax: $0 <host>" >&2
+        # <build_type>: native or cross
+        # <link_type>: static or shared
+        echo "Syntax: $0 <host> <build_type> <link_type>" >&2
         exit 1
     fi
 
     HOST="$1"
+    BUILD_TYPE="$2" # native or cross
+    LINK_TYPE="$3" # static or shared
+    DIRNAME="$HOST-$BUILD_TYPE-$LINK_TYPE"
 
+    if [[ "$BUILD_TYPE" != native && "$BUILD_TYPE" != cross ]]
+    then
+        echo "Unsupported build type (expected native or cross): $BUILD_TYPE" >&2
+        exit 1
+    fi
+
+    if [[ "$LINK_TYPE" != static && "$LINK_TYPE" != shared ]]
+    then
+        echo "Unsupported link type (expected static or shared): $LINK_TYPE" >&2
+        exit 1
+    fi
+
+    if [[ "$BUILD_TYPE" == cross ]]
+    then
         if [[ "$HOST" = win32 ]]
         then
             HOST_TRIPLET=i686-w64-mingw32
@@ -18,9 +37,10 @@ process_args() {
         then
             HOST_TRIPLET=x86_64-w64-mingw32
         else
-        echo "Unsupported host: $HOST" >&2
+            echo "Unsupported cross-build to host: $HOST" >&2
             exit 1
         fi
+    fi
 }
 
 DEPS_DIR=$(dirname ${BASH_SOURCE[0]})

app/deps/ffmpeg.sh

@@ -23,41 +23,26 @@ fi
 mkdir -p "$BUILD_DIR/$PROJECT_DIR"
 cd "$BUILD_DIR/$PROJECT_DIR"
 
-if [[ "$HOST" = win32 ]]
+if [[ -d "$DIRNAME" ]]
 then
-    ARCH=x86
+    echo "'$PWD/$DIRNAME' already exists, not reconfigured"
-elif [[ "$HOST" = win64 ]]
+    cd "$DIRNAME"
-then
-    ARCH=x86_64
 else
-    echo "Unsupported host: $HOST" >&2
+    mkdir "$DIRNAME"
-    exit 1
+    cd "$DIRNAME"
-fi
 
+    if [[ "$HOST" == win* ]]
+    then
         # -static-libgcc to avoid missing libgcc_s_dw2-1.dll
         # -static to avoid dynamic dependency to zlib
         export CFLAGS='-static-libgcc -static'
         export CXXFLAGS="$CFLAGS"
         export LDFLAGS='-static-libgcc -static'
-
+    fi
-if [[ -d "$HOST" ]]
-then
-    echo "'$PWD/$HOST' already exists, not reconfigured"
-    cd "$HOST"
-else
-    mkdir "$HOST"
-    cd "$HOST"
 
     conf=(
-        --prefix="$INSTALL_DIR/$HOST"
+        --prefix="$INSTALL_DIR/$DIRNAME"
-        --enable-cross-compile
-        --target-os=mingw32
-        --arch="$ARCH"
-        --cross-prefix="${HOST_TRIPLET}-"
-        --cc="${HOST_TRIPLET}-gcc"
         --extra-cflags="-O2 -fPIC"
-        --enable-shared
-        --disable-static
         --disable-programs
         --disable-doc
         --disable-swscale
@@ -89,6 +74,48 @@ else
         --enable-muxer=wav
     )
 
+    if [[ "$LINK_TYPE" == static ]]
+    then
+        conf+=(
+            --enable-static
+            --disable-shared
+        )
+    else
+        conf+=(
+            --disable-static
+            --enable-shared
+        )
+    fi
+
+    if [[ "$BUILD_TYPE" == cross ]]
+    then
+        conf+=(
+            --enable-cross-compile
+            --cross-prefix="${HOST_TRIPLET}-"
+            --cc="${HOST_TRIPLET}-gcc"
+        )
+
+        case "$HOST" in
+            win32)
+                conf+=(
+                    --target-os=mingw32
+                    --arch=x86
+                )
+                ;;
+
+            win64)
+                conf+=(
+                    --target-os=mingw32
+                    --arch=x86_64
+                )
+                ;;
+
+            *)
+                echo "Unsupported host: $HOST" >&2
+                exit 1
+        esac
+    fi
+
     "$SOURCES_DIR/$PROJECT_DIR"/configure "${conf[@]}"
 fi
 

app/deps/libusb.sh

@@ -26,21 +26,38 @@ cd "$BUILD_DIR/$PROJECT_DIR"
 export CFLAGS='-O2'
 export CXXFLAGS="$CFLAGS"
 
-if [[ -d "$HOST" ]]
+if [[ -d "$DIRNAME" ]]
 then
-    echo "'$PWD/$HOST' already exists, not reconfigured"
+    echo "'$PWD/$DIRNAME' already exists, not reconfigured"
-    cd "$HOST"
+    cd "$DIRNAME"
 else
-    mkdir "$HOST"
+    mkdir "$DIRNAME"
-    cd "$HOST"
+    cd "$DIRNAME"
 
     conf=(
-        --prefix="$INSTALL_DIR/$HOST"
+        --prefix="$INSTALL_DIR/$DIRNAME"
-        --host="$HOST_TRIPLET"
-        --enable-shared
-        --disable-static
     )
 
+    if [[ "$LINK_TYPE" == static ]]
+    then
+        conf+=(
+            --enable-static
+            --disable-shared
+        )
+    else
+        conf+=(
+            --disable-static
+            --enable-shared
+        )
+    fi
+
+    if [[ "$BUILD_TYPE" == cross ]]
+    then
+        conf+=(
+            --host="$HOST_TRIPLET"
+        )
+    fi
+
     "$SOURCES_DIR/$PROJECT_DIR"/bootstrap.sh
     "$SOURCES_DIR/$PROJECT_DIR"/configure "${conf[@]}"
 fi

app/deps/sdl.sh

@@ -26,21 +26,38 @@ cd "$BUILD_DIR/$PROJECT_DIR"
 export CFLAGS='-O2'
 export CXXFLAGS="$CFLAGS"
 
-if [[ -d "$HOST" ]]
+if [[ -d "$DIRNAME" ]]
 then
-    echo "'$PWD/$HOST' already exists, not reconfigured"
+    echo "'$PWD/$HDIRNAME' already exists, not reconfigured"
-    cd "$HOST"
+    cd "$DIRNAME"
 else
-    mkdir "$HOST"
+    mkdir "$DIRNAME"
-    cd "$HOST"
+    cd "$DIRNAME"
 
     conf=(
-        --prefix="$INSTALL_DIR/$HOST"
+        --prefix="$INSTALL_DIR/$DIRNAME"
-        --host="$HOST_TRIPLET"
-        --enable-shared
-        --disable-static
     )
 
+    if [[ "$LINK_TYPE" == static ]]
+    then
+        conf+=(
+            --enable-static
+            --disable-shared
+        )
+    else
+        conf+=(
+            --disable-static
+            --enable-shared
+        )
+    fi
+
+    if [[ "$BUILD_TYPE" == cross ]]
+    then
+        conf+=(
+            --host="$HOST_TRIPLET"
+        )
+    fi
+
     "$SOURCES_DIR/$PROJECT_DIR"/configure "${conf[@]}"
 fi
 
@@ -48,4 +65,7 @@ make -j
 # There is no "make install-strip"
 make install
 # Strip manually
-${HOST_TRIPLET}-strip "$INSTALL_DIR/$HOST/bin/SDL2.dll"
+if [[ "$LINK_TYPE" == shared && "$HOST" == win* ]]
+then
+    ${HOST_TRIPLET}-strip "$INSTALL_DIR/$DIRNAME/bin/SDL2.dll"
+fi

release/build_windows.sh

@@ -21,11 +21,11 @@ cd .. # root project dir
 WINXX_BUILD_DIR="$WORK_DIR/build-$WINXX"
 
 app/deps/adb_windows.sh
-app/deps/sdl.sh $WINXX
+app/deps/sdl.sh $WINXX cross shared
-app/deps/ffmpeg.sh $WINXX
+app/deps/ffmpeg.sh $WINXX cross shared
-app/deps/libusb.sh $WINXX
+app/deps/libusb.sh $WINXX cross shared
 
-DEPS_INSTALL_DIR="$PWD/app/deps/work/install/$WINXX"
+DEPS_INSTALL_DIR="$PWD/app/deps/work/install/$WINXX-cross-shared"
 ADB_INSTALL_DIR="$PWD/app/deps/work/install/adb-windows"
 
 rm -rf "$WINXX_BUILD_DIR"