Fixing build file to utilize gcc

fann-builder/Dockerfile

@@ -1,12 +1,11 @@
 FROM alpine:latest
 
-# Install all necessary tools: git, musl-gcc (which is just gcc in Alpine), make
+# Install all necessary tools: git, build tools
 RUN apk add --no-cache \
     git \
-    build-base \
+    build-base
-    musl-dev
 
-# Create a non-root user to run the build (best practice)
+# Create a non-root user to run the build
 RUN adduser -D builder
 USER builder
 WORKDIR /home/builder

fann-builder/build.sh

@@ -1,18 +1,15 @@
 #!/bin/sh
 
-# Clone the specific FANN version you want (e.g., latest from master)
+# Clone the specific FANN version you want
 git clone https://github.com/libfann/fann.git
 cd fann/src
 
-# Build the library exactly as you specified
+# Build the library with gcc (which uses musl in Alpine)
-musl-gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o floatfann.o floatfann.c
+gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o floatfann.o floatfann.c
-musl-gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o doublefann.o doublefann.c
+gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o doublefann.o doublefann.c
-musl-gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o fixedfann.o fixedfann.c
+gcc -c -O2 -fPIC -I../src/include -DDISABLE_PARALLEL_FANN -o fixedfann.o fixedfann.c
 ar rcs libfann.a floatfann.o doublefann.o fixedfann.o
 
-# Copy the crucial artifacts to a folder called 'output'
+# Copy artifacts to the output directory in the home folder
-# TeamCity will look for files in the working directory after the build.
+cp libfann.a /home/builder/output/
-cp libfann.a ~/output/
+cp ../src/include/fann.h /home/builder/output/
-cp ../src/include/fann.h ~/output/
-
-echo "Build complete! Artifacts are in the 'output' directory."