From e98140f91d4f86480343900a572e4a3fe2a10719 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Tue, 25 Jul 2023 12:27:50 +0200
Subject: [PATCH] make: Enable Lightrec for GC/Wii

Add the missing sysconf() function so that the GC/Wii builds will link
properly against Lightrec and GNU Lightning.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 Makefile                       |  3 +++
 Makefile.libretro              |  4 ++--
 libpcsxcore/lightrec/sysconf.c | 13 +++++++++++++
 3 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 libpcsxcore/lightrec/sysconf.c

diff --git a/Makefile b/Makefile
index ee3a44f0..470b9e89 100644
--- a/Makefile
+++ b/Makefile
@@ -102,6 +102,9 @@ ifeq ($(LIGHTREC_CUSTOM_MAP),1)
 LDLIBS += -lrt
 OBJS += $(LIGHTREC_CUSTOM_MAP_OBJ)
 endif
+ifeq ($(NEED_SYSCONF),1)
+OBJS += libpcsxcore/lightrec/sysconf.o
+endif
 ifeq ($(LIGHTREC_THREADED_COMPILER),1)
 OBJS += deps/lightrec/recompiler.o \
 	deps/lightrec/reaper.o
diff --git a/Makefile.libretro b/Makefile.libretro
index 5f43eea0..e297bb6d 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -330,10 +330,10 @@ else ifneq (,$(filter $(platform),ngc wii wiiu))
 	TARGET := $(TARGET_NAME)_libretro_$(platform).a
 	ifeq ($(platform), ngc)
 		CFLAGS += -DHW_DOL -mogc
-		DYNAREC := 0 # missing sysconf()
+		NEED_SYSCONF := 1
 	else ifeq ($(platform), wii)
 		CFLAGS += -DHW_RVL -mrvl
-		DYNAREC := 0 # missing sysconf()
+		NEED_SYSCONF := 1
 	else ifeq ($(platform), wiiu)
 		# -mwup was removed in newer devkitPPC versions
 		CFLAGS += -DHW_WUP
diff --git a/libpcsxcore/lightrec/sysconf.c b/libpcsxcore/lightrec/sysconf.c
new file mode 100644
index 00000000..6d51bea4
--- /dev/null
+++ b/libpcsxcore/lightrec/sysconf.c
@@ -0,0 +1,13 @@
+#include <errno.h>
+#include <unistd.h>
+
+/* Implement the sysconf() symbol which is needed by GNU Lightning */
+long sysconf(int name)
+{
+	switch (name) {
+	case _SC_PAGE_SIZE:
+		return 4096;
+	default:
+		return -EINVAL;
+	}
+}
-- 
2.39.5