Try to build with musl

build/Dockerfile

@@ -1,32 +1,110 @@
-# Stage 1: Build the static library
-FROM golang:1.24.1-bookworm AS builder
+# Use an Alpine-based Go image for the builder stage
+FROM datadog/libddwaf:toolchain AS builder
 
-# Install dependencies
-RUN apt-get update && apt-get install -y gcc binutils
+# Variables de entorno para el build universal
+ENV QUIC_LTTng=0 \
+    IsAlpine=true \
+    AsUniversal=true
+
+RUN apt-get update \
+    && apt-get -y upgrade \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y --fix-missing \
+      cmake \
+      git \
+      wget \
+      curl \
+      cmake \
+      make \
+      gcc \
+      build-essential \
+      uuid-dev \
+      autoconf \
+      gdb \
+      tar \
+      \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN ln -sf "$(which clang-16)" /usr/bin/clang && \
+    ln -sf "$(which clang++-16)" /usr/bin/clang++
+
+ENV CXX=clang++ \
+    CC=clang
 
 # Argument can be set during build time with --build-arg GOARCH=arm64
 ARG GOARCH=amd64
+ENV GOARCH=$GOARCH
 
-# Configure environment variables for CGO, operating system, architecture, and compiler
-ENV CGO_ENABLED=1 \
-    GOOS=linux \
-    GOARCH=$GOARCH \
-    CC=gcc \
-    CGO_CFLAGS="-O2 -Os -s -DNDEBUG -fdata-sections -ffunction-sections" \
-    CGO_LDFLAGS="-s -Wl,--gc-sections"
+# Definimos el MUSL target y comprobamos la arquitectura
+# Guardamos el target en un archivo para usarlo en los comandos posteriores
+RUN case "$GOARCH" in \
+        amd64) echo "x86_64-none-linux-musl" > /musl_target ;; \
+        arm64) echo "aarch64-none-linux-musl" > /musl_target ;; \
+        *) echo "Unsupported architecture: $GOARCH" && exit 1 ;; \
+    esac
 
-WORKDIR /app
+# Definimos el intérprete de carga dinámica según la arquitectura
+RUN case "$GOARCH" in \
+        amd64) echo "ld-musl-x86_64.so.1" > /interpreter ;; \
+        arm64) echo "ld-musl-aarch64.so.1" > /interpreter ;; \
+        *) echo "Unsupported architecture: $GOARCH" && exit 1 ;; \
+    esac
+
+
+# Install Go manually
+ENV GOFILENAME=go1.24.1.linux-${GOARCH}.tar.gz \
+    GODOWNLOADURL=https://go.dev/dl/go1.24.1.linux-${GOARCH}.tar.gz
+RUN wget -O go.tar.gz ${GODOWNLOADURL} && \
+    tar -C /usr/local -xzf go.tar.gz && \
+    rm go.tar.gz
 
-# Copy everything from the current directory to the PWD (Present Working Directory) inside the container
+ENV PATH="$PATH:/usr/local/go/bin" \
+    CGO_ENABLED=1 \
+    GOOS=linux 
+
+WORKDIR /app
 COPY . .
 
 WORKDIR /app/internal/civisibility/native
 
-# Build the library
-RUN go build -tags civisibility_native -buildmode=c-archive -ldflags="-s -w" -gcflags="all=-l" -o ./output/static/libtestoptimization.a *.go
-RUN strip --strip-unneeded ./output/static/libtestoptimization.a
-RUN go build -tags civisibility_native -buildmode=c-shared -ldflags="-s -w" -gcflags="all=-l" -o ./output/dynamic/libtestoptimization.so *.go
-RUN strip --strip-unneeded ./output/dynamic/libtestoptimization.so
+# Comunes: Leemos el MUSL target y el intérprete definidos previamente
+# Se usarán en ambos builds (estático y compartido)
+RUN export MUSL_TARGET=$(cat /musl_target) && \
+    export SYSROOT=/sysroot/$MUSL_TARGET && \
+    export INTERPRETER=$(cat /interpreter) && \
+    echo "Using SYSROOT: $SYSROOT and INTERPRETER: $INTERPRETER" && \
+    mkdir -p ./output/static ./output/dynamic
+
+# Build de la librería estática (.a) con buildmode=c-archive
+RUN export MUSL_TARGET=$(cat /musl_target) && \
+    export SYSROOT=/sysroot/$MUSL_TARGET && \
+    export INTERPRETER=$(cat /interpreter) && \
+    export CFLAGS="--target=$MUSL_TARGET -nostdinc++ -isystem $SYSROOT/usr/include \
+      -Qunused-arguments -fPIC -rtlib=compiler-rt -unwindlib=libunwind \
+      -static-libgcc -fno-omit-frame-pointer -ffunction-sections -fdata-sections" && \
+    export LDFLAGS="--target=$MUSL_TARGET -fPIC -fuse-ld=lld-16 -nodefaultlibs \
+      -L$SYSROOT/usr/lib -Wl,-Bstatic -lc++ -lc++abi ${SYSROOT}/usr/lib/libclang_rt.builtins.a -lunwind \
+      -Wl,-Bdynamic -lc ${SYSROOT}/usr/lib/libclang_rt.builtins.a \
+      -Wl,--dynamic-linker,$SYSROOT/lib/${INTERPRETER} -Wl,-rpath,$SYSROOT \
+      -resource-dir $SYSROOT/usr/lib/resource_dir -Wl,--gc-sections -Wl,--discard-all -Wl,--icf=safe" && \
+    export CGO_CFLAGS="$CFLAGS" && \
+    export CGO_LDFLAGS="$LDFLAGS" && \
+    go build -tags civisibility_native -buildmode=c-archive -o ./output/static/libtestoptimization.a *.go
+
+# Build de la librería compartida (.so) con buildmode=c-shared
+RUN export MUSL_TARGET=$(cat /musl_target) && \
+    export SYSROOT=/sysroot/$MUSL_TARGET && \
+    export INTERPRETER=$(cat /interpreter) && \
+    export CFLAGS="--target=$MUSL_TARGET -nostdinc++ -isystem $SYSROOT/usr/include \
+      -Qunused-arguments -fPIC -rtlib=compiler-rt -unwindlib=libunwind \
+      -static-libgcc -fno-omit-frame-pointer -ffunction-sections -fdata-sections" && \
+    export LDFLAGS="--target=$MUSL_TARGET -fPIC -fuse-ld=lld-16 -nodefaultlibs \
+      -L$SYSROOT/usr/lib -Wl,-Bstatic -lc++ -lc++abi ${SYSROOT}/usr/lib/libclang_rt.builtins.a -lunwind \
+      -Wl,-Bstatic -lc -Wl,-Bdynamic \
+      -resource-dir $SYSROOT/usr/lib/resource_dir -Wl,--gc-sections -Wl,--discard-all -Wl,--icf=safe" && \
+    export CGO_CFLAGS="$CFLAGS" && \
+    export CGO_LDFLAGS="$LDFLAGS" && \
+    go build -tags civisibility_native -buildmode=c-shared -o ./output/dynamic/libtestoptimization.so *.go
+
 
 # Stage 2: Extract the library
 FROM alpine:latest
@@ -47,11 +125,12 @@ COPY --from=builder /app/internal/civisibility/native/output/dynamic/libtestopti
 COPY --from=builder /app/internal/civisibility/native/output/dynamic/libtestoptimization.h /output/dynamic/libtestoptimization.h
 
 # Compress both files into zip archives
-RUN cd /output/static && zip -j -9 ../${FILE_NAME}-static.zip *.*
-RUN cd /output/dynamic && zip -j -9 ../${FILE_NAME}-dynamic.zip *.*
+RUN cd /output/static && zip -j -9 ../${FILE_NAME}-static.zip *.* && \
+    cd /output/dynamic && zip -j -9 ../${FILE_NAME}-dynamic.zip *.*
+
 # Create a SHA256 checksum file for the archive
-RUN sha256sum /output/${FILE_NAME}-static.zip > /output/${FILE_NAME}-static.zip.sha256sum
-RUN sha256sum /output/${FILE_NAME}-dynamic.zip > /output/${FILE_NAME}-dynamic.zip.sha256sum
+RUN sha256sum /output/${FILE_NAME}-static.zip > /output/${FILE_NAME}-static.zip.sha256sum && \
+    sha256sum /output/${FILE_NAME}-dynamic.zip > /output/${FILE_NAME}-dynamic.zip.sha256sum
 
 RUN rm -r /output/static /output/dynamic