Build static lib only, use INSTALL env var, generate pkg-config from template

Co-authored-by: erikd <307277+erikd@users.noreply.github.com>

Author: Copilot

Makefile

@@ -48,37 +48,30 @@ ci: fmt-check clippy test
 
 # Generate pkg-config file
 pkgconfig: build-release
+	@if [ -z "$$INSTALL" ]; then \
+		echo "Error: INSTALL environment variable is not set."; \
+		echo "Please set INSTALL to the installation directory, e.g.: export INSTALL=/usr/local"; \
+		exit 1; \
+	fi
 	@mkdir -p rust_accumulator/target/pkgconfig
 	@VERSION=$$(grep '^version' rust_accumulator/Cargo.toml | head -1 | cut -d'"' -f2); \
-	echo "prefix=/usr/local" > rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "exec_prefix=\$${prefix}" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "libdir=\$${exec_prefix}/lib" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "includedir=\$${prefix}/include" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "Name: librust_accumulator" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "Description: A rust based lib for a PCS based accumulator" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "Version: $$VERSION" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "Cflags: -I\$${includedir}" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc; \
-	echo "Libs: -L\$${libdir} -lrust_accumulator" >> rust_accumulator/target/pkgconfig/librust_accumulator.pc
+	sed -e "s|@PREFIX@|$$INSTALL|g" -e "s|@VERSION@|$$VERSION|g" \
+		librust_accumulator.pc.in > rust_accumulator/target/pkgconfig/librust_accumulator.pc
 	@echo "pkg-config file created at rust_accumulator/target/pkgconfig/librust_accumulator.pc"
 
-# Install library and pkg-config file (requires sudo for system-wide install)
+# Install library and pkg-config file
 install: build-release pkgconfig
-	@echo "Installing to prefix: $${PREFIX:-/usr/local}"
-	install -d $${PREFIX:-/usr/local}/lib
-	@if [ -f rust_accumulator/target/release/librust_accumulator.so ]; then \
-		install -m 755 rust_accumulator/target/release/librust_accumulator.so $${PREFIX:-/usr/local}/lib/; \
-	elif [ -f rust_accumulator/target/release/librust_accumulator.dylib ]; then \
-		install -m 755 rust_accumulator/target/release/librust_accumulator.dylib $${PREFIX:-/usr/local}/lib/; \
-	elif [ -f rust_accumulator/target/release/librust_accumulator.dll ]; then \
-		install -m 755 rust_accumulator/target/release/librust_accumulator.dll $${PREFIX:-/usr/local}/lib/; \
-	else \
-		echo "Error: No library file found"; exit 1; \
+	@if [ -z "$$INSTALL" ]; then \
+		echo "Error: INSTALL environment variable is not set."; \
+		echo "Please set INSTALL to the installation directory, e.g.: export INSTALL=/usr/local"; \
+		exit 1; \
 	fi
-	install -d $${PREFIX:-/usr/local}/lib/pkgconfig
-	install -m 644 rust_accumulator/target/pkgconfig/librust_accumulator.pc $${PREFIX:-/usr/local}/lib/pkgconfig/
-	@echo "Installation complete. Library installed to $${PREFIX:-/usr/local}/lib/"
+	@echo "Installing to: $$INSTALL"
+	install -d $$INSTALL/lib
+	install -m 644 rust_accumulator/target/release/librust_accumulator.a $$INSTALL/lib/
+	install -d $$INSTALL/lib/pkgconfig
+	install -m 644 rust_accumulator/target/pkgconfig/librust_accumulator.pc $$INSTALL/lib/pkgconfig/
+	@echo "Installation complete. Library installed to $$INSTALL/lib/"
 
 # Show help
 help:
@@ -95,6 +88,6 @@ help:
 	@echo "  doc           - Build documentation"
 	@echo "  doc-open      - Build and open documentation in browser"
 	@echo "  ci            - Run all checks (format, clippy, test)"
-	@echo "  pkgconfig     - Generate pkg-config file"
-	@echo "  install       - Install library and pkg-config file (use PREFIX=/path to customize)"
+	@echo "  pkgconfig     - Generate pkg-config file (requires INSTALL env var)"
+	@echo "  install       - Install library and pkg-config file (requires INSTALL env var)"
 	@echo "  help          - Show this help message"

librust_accumulator.pc.in

@@ -0,0 +1,11 @@
+prefix=@PREFIX@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: librust_accumulator
+Description: A rust based lib for a PCS based accumulator
+Version: @VERSION@
+
+Cflags: -I${includedir}
+Libs: -L${libdir} -lrust_accumulator

rust_accumulator/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2018"
 
 [lib]
 name = "rust_accumulator"
-crate-type = ["cdylib", "rlib"]
+crate-type = ["staticlib"]
 
 [dependencies]
 blstrs = "0.7.1"