Test the deps target explicitly

Author: cmeister2

.github/workflows/ci.yml

@@ -95,3 +95,15 @@ jobs:
       - name: Compile mainline
         run: |
           ./mainline.sh
+
+  just_dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y cmake clang
+      - name: Compile deps target
+        run: ./scripts/compile_target.sh deps

CMakeLists.txt

@@ -175,9 +175,14 @@ else()
     set(GDB_DEP "")
 endif()
 
-# Group dependencies into a single target
+# Group non-curl dependencies into a single target
 add_custom_target(deps
-    DEPENDS zlib_external ${OPENSSL_DEP} nghttp2_external ${GDB_DEP}
+    DEPENDS
+        zlib_external
+        ${OPENSSL_DEP}
+        nghttp2_external
+        zstd_external
+        ${GDB_DEP}
 )
 
 # Now for the main dependencies!