build variations in CI to keep track of what works

.github/workflows/rust.yml

@@ -13,32 +13,77 @@ env:
   RUSTFLAGS: "-Dwarnings"
 
 jobs:
-  build:
-
+  build-gnu-apt:
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
 
       - name: Update repos
         run: sudo apt-get update -qq
-      - name: Install rust toolchain
-        run: sudo apt-get install -qy cargo rust-clippy
-      - name: install lzma
-        run: sudo apt-get install -qy liblzma-dev
-      - name: install gcc
-        run: sudo apt-get install -qy gcc make
+      - name: Install toolchain
+        run: sudo apt-get install -qy cargo rust-clippy liblzma-dev gcc make pkgconf
 
       - name: Run Clippy
         run: cargo clippy
 
+      - name: build
+        run: cargo build
+
       - name: generate bindings
         run: ./generate-binding.sh
       - name: check that generated files did not change
         run: output=$(git status --porcelain) && [ -z "$output" ]
 
-      - name: build
-        run: cargo build
+      - name: build example -- glibc release
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=release
+      - name: build example -- glibc debug
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=debug
 
-      - name: build example
-        run: cd example && make
+  # this _should_ have been -stable, but there is a bug when running in the container ("Invalid cross-device link")
+  build-musl-beta:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Update repos
+        run: sudo apt-get update -qq
+      - name: Install toolchain
+        run: sudo apt-get install -qy liblzma-dev gcc make pkgconf musl-dev musl-tools rustup
+      - name: install rust target
+        run: rustup default beta && rustup target add aarch64-unknown-linux-musl && rustup component add rust-src && rustup update
+
+      - name: build example -- musl release
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=release MUSL=1 CARGO="rustup run beta cargo"
+      - name: build example -- musl debug
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=debug MUSL=1 CARGO="rustup run beta cargo"
+
+  build-size-gnu-unstable:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Update repos
+        run: sudo apt-get update -qq
+      - name: Install toolchain
+        run: sudo apt-get install -qy liblzma-dev gcc make pkgconf rustup
+      - name: install rust targets
+        run: rustup toolchain install nightly -t aarch64-unknown-linux-gnu -c rust-src --no-self-update
+
+      - name: build example -- glibc size-optimized
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=size-optimized CARGO="rustup run nightly cargo" LTO=1
+
+
+  build-size-musl-unstable:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Update repos
+        run: sudo apt-get update -qq
+      - name: Install toolchain
+        run: sudo apt-get install -qy liblzma-dev gcc make pkgconf musl-dev musl-tools rustup
+      - name: install rust targets
+        run: rustup toolchain install nightly -t aarch64-unknown-linux-musl -c rust-src --no-self-update
+
+      - name: build example -- musl size-optimized
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=size-optimized MUSL=1 LTO=1 CARGO="rustup run nightly cargo"

example/Makefile

@@ -1,7 +1,7 @@
 CARGO ?= cargo
 STRIP ?= strip
 
-FEATURES :=
+FEATURES := ""
 
 THIS_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
 REPO_ROOT := $(realpath $(THIS_DIR)/..)
@@ -10,7 +10,7 @@ export SERVICEPOINT_HEADER_OUT := $(REPO_ROOT)/include
 override CFG_MUSL := $(if $(CFG_MUSL),$(CFG_MUSL),$(if $(MUSL),$(MUSL),0))
 override CFG_PROFILE := $(if $(CFG_PROFILE),$(CFG_PROFILE),$(if $(PROFILE),$(PROFILE),release))
 
-CCFLAGS += -Wall -fwhole-program
+CCFLAGS += -Wall -fwhole-program -fPIE -pie
 
 STRIPFLAGS := -s --strip-unneeded -R .comment -R .gnu.version -R .note -R .note.gnu.build-id -R .note.ABI-tag
 
@@ -18,7 +18,7 @@ ifeq ($(CFG_MUSL), 1)
 	TARGET ?= x86_64-unknown-linux-musl
 	CC ?= musl-gcc
 	CCFLAGS += -static -lservicepoint_binding_c
-	RUSTFLAGS += --crate-type=staticlib
+	RUSTFLAGS += --crate-type=staticlib -Ctarget-feature=-crt-static
 else
 	TARGET ?= x86_64-unknown-linux-gnu
 	CC ?= gcc