docker: static musl build

Author: aeltorio

.gitignore

@@ -163,6 +163,10 @@ Thumbs.db
 
 # Logs
 *.log
+
+# Docker
+.docker/
+*.tar.gz
 Makefile
 test
 test.dSYM/

Dockerfile

@@ -0,0 +1,41 @@
+FROM alpine:3.23
+
+# Install build dependencies
+RUN apk add --no-cache \
+    gcc \
+    musl-dev \
+    make \
+    autoconf \
+    file
+
+# Set working directory
+WORKDIR /build
+
+# Copy source files
+COPY termcap.c termcap.h tparam.c version.c ./
+COPY configure configure.in Makefile.in ./
+COPY mkinstalldirs install-sh ./
+
+# Run configure
+RUN ./configure
+
+# Build static library with C23 support
+RUN make CFLAGS="-std=gnu23 -static -O2" libtermcap.a
+
+# Create output directory
+RUN mkdir -p /output && cp libtermcap.a /output/
+
+# Verify that libtermcap.a is a static library and contains no dynamic dependencies
+RUN file /output/libtermcap.a
+RUN nm -a /usr/local/lib/libtermcap.a | grep " U " && echo "ERROR: Found undefined symbols!" && exit 1 || echo "✓ No undefined symbols found"
+
+# Final stage - minimal image with just the static library
+FROM alpine:3.23
+RUN mkdir -p /usr/local/lib
+COPY --from=0 /build/libtermcap.a /usr/local/lib/
+COPY --from=0 /build/termcap.h /usr/local/include/
+
+# Verify the library was built
+RUN ls -lh /usr/local/lib/libtermcap.a
+
+WORKDIR /workspace