Shrunk CI recipe.

.drone.yml

@@ -1,11 +1,16 @@
 kind: pipeline
-name: always
+name: x86_64 build
 
 volumes:
 - name: debian-package-cache
   host:
     path: /var/cache/debian-package-cache
 
+trigger:
+  event:
+    exclude:
+    - tag
+
 steps:
 - name: submodules
   image: docker:git
@@ -34,26 +39,6 @@ steps:
   - name: debian-package-cache
     path: /var/cache/apt/archives
 
----
-kind: pipeline
-name: on_push
-
-volumes:
-- name: debian-package-cache
-  host:
-    path: /var/cache/debian-package-cache
-
-trigger:
-  event:
-    exclude:
-    - tag
-
-steps:
-- name: submodules
-  image: docker:git
-  commands:
-    - git submodule init
-    - git submodule update --recursive
 
 - name: gcc5
   image: debian:stretch-slim
@@ -81,12 +66,12 @@ steps:
   - name: debian-package-cache
     path: /var/cache/apt/archives
 
-- name: gcc7
+- name: gcc9
   image: debian:stretch-slim
   pull: always
   environment:
     LANG: C.utf8
-    CXX: g++-7
+    CXX: g++-9
     CXXFLAGS: -pipe -O2
   commands:
   - rm /etc/apt/apt.conf.d/docker-clean
@@ -97,33 +82,7 @@ steps:
   - gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0x60c317803a41ba51845e371a1e9377a2ba9ef27f
   - gpg --armor --export 0x60c317803a41ba51845e371a1e9377a2ba9ef27f | apt-key add -
   - apt-get update -q
-  - apt-get install -qy -t xenial g++-7
-  - apt-get install -qy cmake pkg-config
-  - apt-get install -qy libconfig++-dev libxdg-basedir-dev asciidoc
-  - rm -rf build && mkdir -p build && cd build
-  - cmake -DCMAKE_INSTALL_PREFIX=/usr ..
-  - make VERBOSE=1
-  volumes:
-  - name: debian-package-cache
-    path: /var/cache/apt/archives
-
-- name: gcc8
-  image: debian:stretch-slim
-  pull: always
-  environment:
-    LANG: C.utf8
-    CXX: g++-8
-    CXXFLAGS: -pipe -O2
-  commands:
-  - rm /etc/apt/apt.conf.d/docker-clean
-  - apt-get update -q
-  - echo "APT::Default-Release \"stretch\";" >> /etc/apt/apt.conf.d/00default_release
-  - echo "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main" >> /etc/apt/sources.list.d/ubuntu-toolchain-r.list
-  - apt-get install -qy gnupg
-  - gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0x60c317803a41ba51845e371a1e9377a2ba9ef27f
-  - gpg --armor --export 0x60c317803a41ba51845e371a1e9377a2ba9ef27f | apt-key add -
-  - apt-get update -q
-  - apt-get install -qy -t xenial g++-8
+  - apt-get install -qy -t xenial g++-9
   - apt-get install -qy cmake pkg-config
   - apt-get install -qy libconfig++-dev libxdg-basedir-dev asciidoc
   - rm -rf build && mkdir -p build && cd build
@@ -152,28 +111,6 @@ steps:
   - name: debian-package-cache
     path: /var/cache/apt/archives
 
-- name: clang5
-  image: debian:stretch-slim
-  pull: always
-  environment:
-    LANG: C.utf8
-    CXX: clang++-5.0
-    CXXFLAGS: -pipe -O2
-  commands:
-  - rm /etc/apt/apt.conf.d/docker-clean
-  - echo "APT::Default-Release \"stretch\";" >> /etc/apt/apt.conf.d/00default_release
-  - echo "deb http://deb.debian.org/debian stretch-backports main" >> /etc/apt/sources.list.d/stretch.list
-  - apt-get update -q
-  - apt-get install -qy -t stretch-backports clang-5.0
-  - apt-get install -qy cmake pkg-config
-  - apt-get install -qy libconfig++-dev libxdg-basedir-dev asciidoc
-  - rm -rf build && mkdir -p build && cd build
-  - cmake -DCMAKE_INSTALL_PREFIX=/usr ..
-  - make VERBOSE=1
-  volumes:
-  - name: debian-package-cache
-    path: /var/cache/apt/archives
-
 - name: clang6
   image: debian:stretch-slim
   pull: always
@@ -196,23 +133,6 @@ steps:
   - name: debian-package-cache
     path: /var/cache/apt/archives
 
----
-kind: pipeline
-name: after
-
-depends_on:
-  - always
-  - on_push
-
-trigger:
-  status:
-  - success
-  - failure
-
-clone:
-  disable: true
-
-steps:
 - name: notify
   image: drillster/drone-email
   pull: always

README.adoc

@@ -22,8 +22,8 @@ https://schlomp.space/tastytea/overlay[repository].
 
 ==== Dependencies
 
-* C++ compiler (tested: https://gcc.gnu.org/[gcc] 5/6/7/8,
-  https://llvm.org/[clang] 3/5/6)
+* C++ compiler (tested: https://gcc.gnu.org/[gcc] 5/6/8/9,
+  https://llvm.org/[clang] 3/6)
 * https://cmake.org/[cmake] (at least 3.2)
 * http://repo.or.cz/w/libxdg-basedir.git[libxdg-basedir] (tested: 1.2)
 * https://github.com/hyperrealm/libconfig[libconfig++] (tested: 1.5)