ci: install scdoc

On Debian, install g++ instead of build-essential, as it drags in
useless dependencies and its description explicitly says that it should
only be installed if you need to build Debian packages.

Also stop using meson's implicit setup command, as it's now discouraged:
https://github.com/mesonbuild/meson/pull/10701

.github/workflows/test.yml

@@ -35,7 +35,7 @@ jobs:
           # the code assumes msvc style printf atm
           export CFLAGS=-D__USE_MINGW_ANSI_STDIO=0
 
-          meson -Dtests=false _build
+          meson setup -Dtests=false _build
           meson compile -C _build
 
   debian-meson:
@@ -49,11 +49,11 @@ jobs:
       - name: Update system and add dependencies
         run: |
           apt-get update
-          apt-get install -y kyua atf-sh build-essential meson
+          apt-get install -y kyua atf-sh g++ meson scdoc
 
       - name: Build
         run: |
-          meson _build -Dwerror=true
+          meson setup _build -Dwerror=true
           meson compile -C _build
 
       - name: Run tests
@@ -71,11 +71,11 @@ jobs:
       - name: Update system and add dependencies
         run: |
           apt-get update
-          apt-get install -y kyua atf-sh build-essential meson
+          apt-get install -y kyua atf-sh g++ meson scdoc
 
       - name: Build
         run: |
-          meson _build -Db_sanitize=address
+          meson setup _build -Db_sanitize=address
           meson compile -C _build
 
       - name: Run tests
@@ -95,7 +95,7 @@ jobs:
       - name: Update system and add dependencies
         run: |
           apt-get update
-          apt-get install -y kyua atf-sh build-essential autoconf libtool
+          apt-get install -y kyua atf-sh g++ autoconf libtool
 
       - name: Build
         run: |
@@ -122,7 +122,7 @@ jobs:
 
       - name: Build
         run: |
-          meson _build -Dwerror=true
+          meson setup _build -Dwerror=true
           meson compile -C _build
 
       - name: Run tests

.woodpecker.yml

@@ -3,8 +3,8 @@ pipeline:
     image: debian:testing
     commands:
       - apt-get update
-      - apt-get install -y kyua atf-sh build-essential meson
+      - apt-get install -y kyua atf-sh g++ meson scdoc
-      - meson _build -Dwerror=true
+      - meson setup _build -Dwerror=true
       - meson compile -C _build
       - meson test -v -C _build
     when:
@@ -18,8 +18,8 @@ pipeline:
       - ASAN_OPTIONS="exitcode=7"
     commands:
       - apt-get update
-      - apt-get install -y kyua atf-sh build-essential meson
+      - apt-get install -y kyua atf-sh g++ meson scdoc
-      - meson _build -Db_sanitize=address
+      - meson setup _build -Db_sanitize=address
       - meson compile -C _build
       - meson test -v -C _build
     when:
@@ -31,7 +31,7 @@ pipeline:
     image: debian:testing
     commands:
       - apt-get update
-      - apt-get install -y kyua atf-sh build-essential autoconf libtool
+      - apt-get install -y kyua atf-sh g++ autoconf libtool
       - ./autogen.sh
       - ./configure
       - make -j
@@ -45,7 +45,7 @@ pipeline:
     image: alpine
     commands:
       - apk add -U --no-cache kyua atf build-base meson
-      - meson _build -Dwerror=true
+      - meson setup _build -Dwerror=true
       - meson compile -C _build
       - meson test -v -C _build
     when: