Fix: Eliminate compiler warnings during build process (#3)

Addressed all compiler warnings by:
- Fixed variable type mismatches in function parameters
- Properly handled unused variables with appropriate casts
- Corrected format string specifiers for various platform compatibility
- Ensured consistent return values in all code paths
- Added explicit initialization for potentially uninitialized variables

Build now completes cleanly without warnings on standard compiler settings.

Signed-off-by: editheman <edipana0409@gmail.com>

Improve Makefile for cross-platform build reliability (#3)

Created a robust Makefile that:
- Adds proper OpenSSL detection via pkg-config with intelligent fallbacks
- Supports multiple platforms with OS-specific adaptations
- Handles common macOS package locations (Homebrew and MacPorts)
- Implements flexible compiler settings with strict warning flags
- Includes a dedicated debug target for development
- Ensures clean builds with proper dependencies

This ensures vfdecrypt builds consistently across different environments without manual configuration.

Signed-off-by: editheman <edipana0409@gmail.com>

Add .gitignore to exclude build artifacts and editor config

Signed-off-by: editheman <edipana0409@gmail.com>

Author: editheman

.gitignore

@@ -1 +1,54 @@
-/vfdecrypt
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+vfdecrypt
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Project specific
+decrypted.dmg
+
+# OS X
+.DS_Store
+
+# Editors
+.vscode/
+.idea/

Makefile

@@ -1,16 +1,62 @@
-CFLAGS = -Wall
-LDLIBS = -lcrypto
+CC       ?= cc
+CFLAGS   ?= -O2
+CFLAGS   += -Wall -Wextra -Wpedantic -std=c11
+# If you want even stricter checks, uncomment:
+# CFLAGS   += -Wshadow -Wconversion -Wmissing-prototypes -Wstrict-prototypes
+
+RM       ?= rm -f
+
+OPENSSL_PKG := $(shell pkg-config --exists openssl    && echo openssl    || \
+                        pkg-config --exists openssl@3 && echo openssl@3 || echo)
+
+ifeq ($(strip $(OPENSSL_PKG)),)
+  OPENSSL_CFLAGS :=
+  OPENSSL_LIBS   :=
+else
+  OPENSSL_CFLAGS := $(shell pkg-config --cflags $(OPENSSL_PKG) 2>/dev/null)
+  OPENSSL_LIBS   := $(shell pkg-config --libs   $(OPENSSL_PKG) 2>/dev/null)
+endif
+
+ifeq ($(strip $(OPENSSL_LIBS)),)
+  LDLIBS   += -lcrypto
+else
+  CPPFLAGS += $(OPENSSL_CFLAGS)
+  LDLIBS   += $(OPENSSL_LIBS)
+endif
 
 UNAME_S := $(shell uname -s)
 ifeq ($(UNAME_S),Darwin)
-	LDFLAGS = -L/opt/local/lib
-	CPPFLAGS = -I/opt/local/include -DMAC_OSX
-endif
+  CPPFLAGS += -DMAC_OSX
 
-.PHONY: all clean
+  ifeq ($(strip $(OPENSSL_LIBS)),)
+    HB_ARM   := /opt/homebrew/opt/openssl@3
+    HB_INTEL := /usr/local/opt/openssl@3
+    ifneq ("$(wildcard $(HB_ARM)/include/openssl)","")
+      CPPFLAGS += -I$(HB_ARM)/include
+      LDFLAGS  += -L$(HB_ARM)/lib
+    endif
+    ifneq ("$(wildcard $(HB_INTEL)/include/openssl)","")
+      CPPFLAGS += -I$(HB_INTEL)/include
+      LDFLAGS  += -L$(HB_INTEL)/lib
+    endif
+    ifneq ("$(wildcard /opt/local/include/openssl)","")
+      CPPFLAGS += -I/opt/local/include
+      LDFLAGS  += -L/opt/local/lib
+    endif
+  endif
+endif
 
+.PHONY: all clean debug
 all: vfdecrypt
 
+vfdecrypt: vfdecrypt.o
+	$(CC) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+
+vfdecrypt.o: vfdecrypt.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
+
+debug: CFLAGS := -O0 -g -Wall -Wextra -Wpedantic -std=c11
+debug: clean vfdecrypt
+
 clean:
-	-rm -f vfdecrypt
-	-rm -f *~
+	$(RM) vfdecrypt vfdecrypt.o *~