Stop trying to automate the dependency activation

.woodpecker/build.yml

@@ -1,3 +1,11 @@
+clone:
+  git:
+    image: woodpeckerci/plugin-git
+    settings:
+      depth: 1
+      lfs: false
+      recursive: false
+
 pipeline:
   Prepare:
     image: beta.devheroes.codes/serene/ci:9
@@ -5,8 +13,7 @@ pipeline:
       - pwd
       - ./builder deps pull toolchain
       - ./builder deps pull bdwgc
-      - export SERENE_ROOT=$(pwd)
-      - source activate
+      - export SERENE_AUTO_DEP=true
       - ./builder build
 
     volumes:

README.org

@@ -47,7 +47,6 @@ The ~builder~ script can build the necessary dependencies for you. Just make sur
 all the dependencies as instructed above and follow:
 
  #+BEGIN_SRC bash
-
    # Download prebuilt dependencies instead of building from source (X86_64 only)
 
    # Try to pull a prebuilt package for the toolchain (including llvm libraries)
@@ -63,9 +62,16 @@ all the dependencies as instructed above and follow:
  After building or pulling the dependencies, you'll have all of them under =~/.serene/env/=.
  All you need to do is to activate the environment and build Serene itself.
 
- To activate the environment, you can just do ~source ./activate~ in the root of the
- source tree to activate the toolchain and the right set up dependencies.
+After a =pull= or =build=, the ~builder~ script will let you know that what environment variables
+are necessary to activate the dependencies. Also, if you are lazy like me, you can just set
+the =SERENE_AUTO_DEP= to =true= and let the builder script set those for you. E.g.
 
+ #+BEGIN_SRC bash
+   export SERENE_AUTO_DEP="true"
+ #+END_SRC
+
+Be advised that, setting up the above variable makes it a bit harder to switch to other environment
+in the same shell that usually is not the case.
 
 ** Build and installing dependencies (Other platforms)
 Currently, the ~builder~ script does not support any platform beside GNU/Linux. So, you

builder

@@ -78,6 +78,7 @@ source "$ME/scripts/deps.sh"
 # Initialization
 # -----------------------------------------------------------------------------
 mkdir -p "$DEPS_BUILD_DIR"
+setup_dependencies
 
 # -----------------------------------------------------------------------------
 # Helper functions
@@ -109,8 +110,8 @@ function popd_build() {
 function build-gen() {
     pushed_build
     info "Running: "
-    info "cmake -G Ninja ${CMAKEARGS[*]} ${CMAKEARGS[*]}" "\"$*\" \"$ROOT_DIR\""
-    cmake -G Ninja "${CMAKEARGS[@]}" "${CMAKEARGS_DEBUG[@]}" "$*" "$ROOT_DIR"
+    info "cmake -G Ninja ${CMAKEARGS[*]} ${CMAKEARGS[*]}" "\"$*\" \"$ME\""
+    cmake -G Ninja "${CMAKEARGS[@]}" "${CMAKEARGS_DEBUG[@]}" "$*" "$ME"
     popd_build
 }
 
@@ -132,6 +133,7 @@ function build() { ## Builds the project by regenerating the build scripts
     local cpus
 
     rm -rf "$BUILD_DIR"
+
     build-gen "$@"
     pushed_build
 

config

@@ -67,8 +67,6 @@ BDWGC_DIR_NAME="bdwgc"
 BDWGC_SOURCE_DIR="$ME/deps/$BDWGC_DIR_NAME"
 BDWGC_BUILD_DIR="$DEPS_BUILD_DIR/${BDWGC_DIR_NAME}_build"
 BDWGC_INSTALL_DIR="$DEPS_BUILD_DIR/$BDWGC_DIR_NAME.$(get_version $BDWGC_SOURCE_DIR)"
-# This is a variable that cmake expects
-BDWgc_DIR="$BDWGC_INSTALL_DIR/lib64/cmake/bdwgc"
 
 IWYU_DIR="$ME/deps/include-what-you-use"
 
@@ -92,4 +90,3 @@ export BDWGC_DIR_NAME
 export BDWGC_DIR
 export BDWGC_BUILD_DIR
 export BDWGC_INSTALL_DIR
-export BDWgc_DIR

scripts/deps.sh

@@ -64,6 +64,7 @@ function build_toolchain() { ## Build LLVM and the toolchain
     cmake --build . --parallel
     cmake -DCMAKE_INSTALL_PREFIX="$LLVM_INSTALL_DIR" -P cmake_install.cmake
     _pop
+    info_toolchain
 }
 
 function package_toolchain() { ## Packages the built toolchain
@@ -78,7 +79,7 @@ function package_toolchain() { ## Packages the built toolchain
     info "Packaging the toolchain version '$version'..."
     _push "$DEPS_BUILD_DIR"
     local pkg
-    pkg="$LLVM_DIR_NAME.$(get_version "$LLVM_DIR")"
+    pkg="$LLVM_DIR_NAME.$version"
     time tar -I "$ZSTD_CLI" -cf "$pkg.zstd" "$pkg"
     _pop
 }
@@ -122,6 +123,19 @@ function pull_toolchain() {
         exit 4
     fi
     _pop
+    info_toolchain
+}
+
+function info_toolchain() {
+    local version
+    version=$(get_version "$LLVM_DIR")
+
+    info "To activate toolchain version '$version' add the following env variable to your shell:"
+
+    info "export PATH=$LLVM_INSTALL_DIR/bin:$PATH"
+    info "export CC='$LLVM_INSTALL_DIR/bin/clang'"
+    info "export CXX='$LLVM_INSTALL_DIR/bin/clang++'"
+    info "export LDFLAGS=\"-fuse-ld=lld $LDFLAGS\""
 }
 
 function build_bdwgc() { ## Builds the BDW GC
@@ -168,7 +182,9 @@ function build_bdwgc() { ## Builds the BDW GC
 
     cmake --build . --parallel
     cmake -DCMAKE_INSTALL_PREFIX="$BDWGC_INSTALL_DIR" -P cmake_install.cmake
+
     _pop
+    info_bdwgc
 }
 
 function package_bdwgc() { ## Packages the built toolchain
@@ -183,7 +199,7 @@ function package_bdwgc() { ## Packages the built toolchain
     info "Packaging the BDWGC version '$version'..."
     _push "$DEPS_BUILD_DIR"
     local pkg
-    pkg="$BDWGC_DIR_NAME.$(get_version "$BDWGC_SOURCE_DIR")"
+    pkg="$BDWGC_DIR_NAME.$version"
     time tar -I "$ZSTD_CLI" -cf "$pkg.zstd" "$pkg"
     _pop
 }
@@ -229,6 +245,16 @@ function pull_bdwgc() {
         exit 4
     fi
     _pop
+
+    info_bdwgc
+}
+
+function info_bdwgc() {
+    local version
+    version=$(get_version "$BDWGC_SOURCE_DIR")
+
+    info "To activate BDWGC version '$version' add the following env variable to your shell:"
+    info "export BDWgc_DIR='$BDWGC_INSTALL_DIR/lib64/cmake/bdwgc'"
 }
 
 function manage_dependencies() {
@@ -315,3 +341,31 @@ function install_dependencies() {
 function unpack() {
     tar -I "$ZSTD_CLI" -xf "$1" -C "$DEPS_BUILD_DIR"
 }
+
+
+function setup_dependencies() {
+    if [[ "$SERENE_AUTO_DEP" = "true" ]]; then
+        if [ -d "$LLVM_INSTALL_DIR" ]; then
+            info "Activating the toolchain at '$LLVM_INSTALL_DIR'..."
+            export PATH="$LLVM_INSTALL_DIR/bin:$PATH"
+
+            CC=$(which clang)
+            CXX=$(which clang++)
+            info "Setting CC to '$CC'"
+            info "Setting CXX to '$CXX'"
+
+            LDFLAGS="-fuse-ld=lld"
+            info "Switching to LLD."
+
+            export CC
+            export CXX
+            export LDFLAGS
+        fi
+        if [ -d "$BDWGC_INSTALL_DIR" ]; then
+            info "Activating the BDWGC at '$BDWGC_INSTALL_DIR'..."
+
+            BDWgc_DIR="$BDWGC_INSTALL_DIR/lib64/cmake/bdwgc"
+            export BDWgc_DIR
+        fi
+    fi
+}