# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#     Compilation Options
# Debug mode [yes/no] (allowing to debug the library via gdb):
DEBUG   ?= no
# Optional modules (remove unwanted ones):
MODULES ?= cgi fastcgi loadfiles urlenc
# Specify your favourite C compiler here:
CC      ?= gcc


# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#     Preparations
# Compile under the most strict conditions:
CFLAGS   = -xc -ansi -pedantic -Wall -Wextra
# Specify linker to use the library:
LFLAGS   = -L$(BUILD) -lmagi
# Debug and optimisation (as well as -static for valgrind) are not compatible:
ifeq '$(DEBUG)' 'yes'
CFLAGS  += -g -O0
else
CFLAGS  += -O3
LFLAGS  += -static
endif

# Directories definitions:
INCLUDE  = include
BUILD    = build
SRCDIR   = src
EXADIR   = examples
# Library itself:
LIB      = libmagi.a
# Modules:
EXTERNAL = cookie error file param request response session $(MODULES)
INTERNAL = cookies multipart tools urlencoded

# Default target is library:
TARGET   = $(BUILD)/$(LIB)
# Determing needed object files:
EXTER_H  = $(foreach x,$(EXTERNAL:=.h),$(INCLUDE)/magi/$(x))
EXTER_C  = $(foreach x,$(EXTERNAL:=.c),$(SRCDIR)/$(x))
INTER_H  = $(foreach i,$(INTERNAL:=.h),$(SRCDIR)/$(i))
INTER_C  = $(INTER_H:.h=.c)
SRC      = $(INTER_C) $(EXTER_C)
OBJ      = $(foreach o,$(SRC:.c=.o),$(BUILD)/$(o))
# Example executables:
EXASRC   = $(wildcard $(EXADIR)/*.c)
EXAMPLES = $(foreach x,$(EXASRC:.c=),$(BUILD)/$(x))
# Dependency file:
DEPS     = deps.mk

SRCINC   = -I$(INCLUDE)/magi
EXAINC   = -I$(INCLUDE)
SRCBUILD = $(BUILD)/$(SRCDIR)
EXABUILD = $(BUILD)/$(EXADIR)


# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#     Targets
.PHONY: all examples clean

all: $(SRCBUILD) $(TARGET)

examples: all $(EXABUILD) $(EXAMPLES)

clean:
	rm -f $(TARGET) $(OBJ) $(EXAMPLES) $(DEPS)


# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#     Compilation
-include $(DEPS)

# Packing object files into library:
$(TARGET): $(OBJ)
	ar -rcs $@ $^

# Compile object files from corresponding source:
$(BUILD)/%.o: %.c
	$(CC) $(CFLAGS) $(SRCINC) -c $< -o $@

# Compile executables from corresponding sources and library:
$(BUILD)/%: %.c $(TARGET)
	$(CC) $(CFLAGS) $(EXAINC) $< $(LFLAGS) -o $@

# Create build directories, if no such:
$(SRCBUILD) $(EXABUILD):
	mkdir -p $@

# Generate dependency file, adding corresponding build prefixes:
$(DEPS): $(SRC) $(EXASRC) $(EXTER_H) $(INTER_H) $(INCLUDE)/magi.h
	$(CC) $(SRCINC) $(SRC) -MM | sed '/^ /!s#^#$(SRCBUILD)/#' > $@
	$(CC) $(EXAINC) $(EXASRC) -MM | sed '/^ /!s#^#$(EXABUILD)/#;s/\.o//' >> $@