From cc529afeb2f8daa300a483a0fbf9a53f6e5c81c1 Mon Sep 17 00:00:00 2001
From: Sergio Valor <jaildesigner@gmail.com>
Date: Tue, 28 Apr 2026 08:17:49 +0200
Subject: [PATCH] build: detecta Windows i tria generador CMake (Ninja o MinGW
 Makefiles)

---
 Makefile | 46 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 12 deletions(-)

diff --git a/Makefile b/Makefile
index 0b62e8e..a0f84c3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,35 @@
 PROJECT  := aee_2026
 BUILDDIR := build
-JOBS     ?= $(shell nproc 2>/dev/null || echo 4)
 
-# VERSION (única font de veritat: source/utils/defines.hpp)
-VERSION  := v$(shell grep 'constexpr const char\* VERSION' source/utils/defines.hpp | sed -E 's/.*VERSION = "([^"]+)".*/\1/')
+# Detecció de plataforma. En Windows CMake defaulteja a "NMake Makefiles"
+# (que requereix Visual Studio); forcem MinGW Makefiles per usar el g++ de
+# MinGW. nproc tampoc existeix en cmd.exe → fem servir NUMBER_OF_PROCESSORS.
+ifeq ($(OS),Windows_NT)
+    NULDEV    := NUL
+    JOBS      ?= $(NUMBER_OF_PROCESSORS)
+    # Si Ninja està al PATH, l'usem (més ràpid i paral·lelitza millor).
+    # Si no, caiem a MinGW Makefiles. Sense aquesta selecció CMake
+    # defaultejaria a "NMake Makefiles", que requereix Visual Studio.
+    HAS_NINJA := $(shell ninja --version 2>$(NULDEV))
+    ifneq ($(HAS_NINJA),)
+        CMAKE_GEN := -G "Ninja"
+    else
+        CMAKE_GEN := -G "MinGW Makefiles"
+    endif
+else
+    NULDEV    := /dev/null
+    JOBS      ?= $(shell nproc 2>/dev/null || echo 4)
+    CMAKE_GEN :=
+endif
+
+# VERSION (única font de veritat: source/utils/defines.hpp).
+# Lazy (=): només es calcula quan s'invoca un target que la usa
+# (show-version/help). Evita executar grep/sed des de cmd.exe en `make debug`.
+VERSION  = v$(shell grep 'constexpr const char\* VERSION' source/utils/defines.hpp | sed -E 's/.*VERSION = "([^"]+)".*/\1/')
 
 # GIT_HASH calculat al host i passat a CMake (evita problemes si CMake corre en
 # entorns sense accés a git, p.ex. Docker/emscripten).
-GIT_HASH := $(shell git rev-parse --short=7 HEAD 2>/dev/null)
+GIT_HASH := $(shell git rev-parse --short=7 HEAD 2>$(NULDEV))
 ifeq ($(GIT_HASH),)
     GIT_HASH := unknown
 endif
@@ -26,11 +48,11 @@ CMAKE_DEFS := -DGIT_HASH=$(GIT_HASH)
 # ==============================================================================
 
 all:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) -j$(JOBS)
 
 debug:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Debug $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Debug $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) -j$(JOBS)
 
 run: all
@@ -57,7 +79,7 @@ rebuild: clean all
 # del pack encara que res no hagi canviat dins data/. L'empaquetat també es fa
 # automàticament a cada `make`/`make debug` via el target CMake `resource_pack`.
 pack:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target pack_resources
 	@./$(BUILDDIR)/pack_resources data $(BUILDDIR)/resources.pack
 
@@ -74,23 +96,23 @@ controllerdb:
 # CODE QUALITY (delegados a cmake)
 # ==============================================================================
 format:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target format
 
 format-check:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target format-check
 
 tidy:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target tidy
 
 tidy-fix:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target tidy-fix
 
 cppcheck:
-	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
+	@cmake -S . -B $(BUILDDIR) $(CMAKE_GEN) -DCMAKE_BUILD_TYPE=Release $(CMAKE_DEFS)
 	@cmake --build $(BUILDDIR) --target cppcheck
 
 # ==============================================================================