build: add cmake dependency check and update the build scriptrpsene-patch-install-script-update

- Verify 'cmake' is installed before execution.
- Replace manual 'nproc' logic with 'cmake --parallel'.
- Add 'set -euo pipefail' for strict error handling.
- Parameterize build directory and build type.

Signed-off-by: Rafael Sene <rafael@riscv.org>

1 files changed, 25 insertions, 5 deletions

diff --git a/build_simulator.sh b/build_simulator.sh
index b232d48..7f6eb5f 100755
--- a/build_simulator.sh
+++ b/build_simulator.sh
@@ -1,8 +1,28 @@
-#!/bin/sh
+#!/bin/bash
+set -euo pipefail
 
-set -e
+# 1. Dependency Verification
+# We use 'command -v' to check if cmake exists - POSIX standard (IEEE 1003.1)
+if ! command -v cmake >/dev/null 2>&1; then
+    echo "Error: 'cmake' is not installed or not in your PATH." >&2
+    echo "Please install CMake (https://cmake.org/download/) and try again." >&2
+    exit 1
+fi
+
+# Default values
 : "${DOWNLOAD_GMP:=TRUE}"
 : "${ENABLE_RISCV_TESTS:=TRUE}"
-cmake -S . -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo -DDOWNLOAD_GMP="${DOWNLOAD_GMP}" -DENABLE_RISCV_TESTS="${ENABLE_RISCV_TESTS}"
-jobs=$( (nproc || sysctl -n hw.ncpu || echo 2) 2>/dev/null)
-cmake --build build -j${jobs}
+: "${BUILD_TYPE:=RelWithDebInfo}"
+: "${BUILD_DIR:=build}"
+
+# 2. Configuration
+echo "Configuring build in '${BUILD_DIR}'..."
+cmake -S . -B "${BUILD_DIR}" \
+      -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
+      -DDOWNLOAD_GMP="${DOWNLOAD_GMP}" \
+      -DENABLE_RISCV_TESTS="${ENABLE_RISCV_TESTS}" \
+      "$@"
+
+# 3. Build
+echo "Building project..."
+cmake --build "${BUILD_DIR}" --parallel