Workaround 4

Makefile

@@ -1,7 +1,8 @@
-CC = gcc -m32 -pthread
-CFLAGS = -g -fPIC -m32 -Wall -Werror -Wno-misleading-indentation -Wno-unused-but-set-variable -Wno-unused-variable -Wno-unused-function -D_GNU_SOURCE -Wno-char-subscripts
-LD = g++ -m32
-LDFLAGS = -Wl,-z,defs -rdynamic -static-libgcc -lc -ldl -lGL -lglut -lX11 -lSDL2 -lm -lpthread -shared -nostdlib -lasound -L./src/libxdiff -lxdiff
+CC ?= gcc
+CFLAGS = -g -fPIC -m32 -pthread -Wall -Werror -Wno-misleading-indentation -Wno-unused-but-set-variable -Wno-unused-variable -Wno-unused-function -D_GNU_SOURCE -Wno-char-subscripts
+CXX ?= g++
+LD = $(CXX) 
+LDFLAGS = -m32 -Wl,-z,defs -rdynamic -static-libgcc -lc -ldl -lGL -lglut -lX11 -lXcursor -lSDL2 -lm -lpthread -shared -nostdlib -lasound -L./src/libxdiff -lxdiff -L/app/lib32
 
 BUILD = build
 
@@ -17,14 +18,14 @@ all: lindbergh libxdiff.a lindbergh.so libsegaapi.so libkswapapi.so libposixtime
 
 lindbergh: src/lindbergh/lindbergh.c src/lindbergh/log.c src/lindbergh/log.h src/lindbergh/jvs.c src/lindbergh/jvs.h src/lindbergh/config.h src/lindbergh/config.c src/lindbergh/evdevinput.h src/lindbergh/evdevinput.c
 	mkdir -p $(BUILD)
-	$(CC) src/lindbergh/lindbergh.c src/lindbergh/log.h src/lindbergh/log.c src/lindbergh/jvs.h src/lindbergh/jvs.c src/lindbergh/config.h src/lindbergh/config.c src/lindbergh/evdevinput.c src/lindbergh/evdevinput.h -o $(BUILD)/lindbergh -lm
+	$(CC) -m32 src/lindbergh/lindbergh.c src/lindbergh/log.h src/lindbergh/log.c src/lindbergh/jvs.h src/lindbergh/jvs.c src/lindbergh/config.h src/lindbergh/config.c src/lindbergh/evdevinput.c src/lindbergh/evdevinput.h -o $(BUILD)/lindbergh -lm
 
 libxdiff.a: $(XDIFF_OBJS)
 	mkdir -p $(BUILD)
 	ar rcs src/libxdiff/libxdiff.a $(XDIFF_OBJS)
 
 src/libxdiff/xdiff/%.o: src/libxdiff/xdiff/%.c
-	$(CC) -DHAVE_CONFIG_H -fPIC -c $< -o $@
+	$(CC) -m32 -DHAVE_CONFIG_H -fPIC -c $< -o $@
 
 lindbergh.so: $(OBJS)
 	mkdir -p $(BUILD)
@@ -34,13 +35,13 @@ lindbergh.so: $(OBJS)
 	$(CC) $(CFLAGS) -c $< -o $@
 
 libsegaapi.so: src/libsegaapi/libsegaapi.o
-	$(CC) -m32 -O0 -g src/libsegaapi/libsegaapi.c -lFAudio -L/app/lib32 -fPIC -shared -o $(BUILD)/libsegaapi.so
+	$(CC) -m32 -O0 -g src/libsegaapi/libsegaapi.c -lFAudio -fPIC -shared -o $(BUILD)/libsegaapi.so
 
 libkswapapi.so: src/libkswapapi/libkswapapi.o
-	$(CC) src/libkswapapi/libkswapapi.o -fPIC -shared -o $(BUILD)/libkswapapi.so
+	$(CC) -m32 src/libkswapapi/libkswapapi.o -fPIC -shared -o $(BUILD)/libkswapapi.so
 
 libposixtime.so:
-	$(CC) src/libposixtime/libposixtime.c src/libposixtime/libposixtime.h -m32 -shared -o $(BUILD)/libposixtime.so
+	$(CC) -m32 src/libposixtime/libposixtime.c src/libposixtime/libposixtime.h -m32 -shared -o $(BUILD)/libposixtime.so
 	ln -s -f libposixtime.so $(BUILD)/libposixtime.so.1
 	ln -s -f libposixtime.so $(BUILD)/libposixtime.so.2.4
 

src/lindbergh/shader_patches.c

@@ -1432,6 +1432,7 @@ int parseCgcArgs(const char *input, const char ***compilerArgs, const char **out
 
 void loadLibCg()
 {
+    int isFlatpak = 0;
     void *handle = dlopen("./libCg.so", RTLD_NOW);
     if (!handle)
     {
@@ -1442,10 +1443,19 @@ void loadLibCg()
             fprintf(stderr, "Error: libCg.so version 2.0 is needed to compile the shaders in the game's folder.\n");
             exit(1);
         }
+        else
+        {
+            isFlatpak = 1;
+        }
     }
 
     char libCgVersion[9];
-    FILE *libF = fopen("./libCg.so", "r");
+    FILE *libF;
+    if (isFlatpak)
+        libF = fopen("/app/lib32/libCg2.so", "r");
+    else
+        libF = fopen("./libCg.so", "r");
+
     fseek(libF, 0x226d84, SEEK_SET);
     fread(libCgVersion, 9, 1, libF);
     fclose(libF);