Micro template library A library for building device drivers
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  1. #
  2. # Makefile
  3. #
  4. # Main makefile for utl Unit test
  5. #
  6. # Copyright (C) 2019 Christos Choutouridis <christos@choutouridis.net>
  7. #
  8. # This program is free software: you can redistribute it and/or modify
  9. # it under the terms of the GNU Lesser General Public License as
  10. # published by the Free Software Foundation, either version 3
  11. # of the License, or (at your option) any later version.
  12. #
  13. # This program is distributed in the hope that it will be useful,
  14. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. # GNU Lesser General Public License for more details.
  17. #
  18. # You should have received a copy of the GNU Lesser General Public License
  19. # along with this program. If not, see <http://www.gnu.org/licenses/>.
  20. #
  21. # ========== Project settings ==========
  22. TARGET := utlTest.exe
  23. SRC_DIR := tests gtest
  24. INC_DIR := ../include gtest
  25. EXC_FILE :=
  26. # build directories
  27. BUILD_DIR := bin
  28. OBJ_DIR := $(BUILD_DIR)/obj
  29. DEP_DIR := $(BUILD_DIR)/.dep
  30. # ========== Compiler settings ==========
  31. CXX := g++
  32. CPP := g++ -E
  33. CSIZE := size
  34. CFLAGS := -std=c++14 -Wall -Wextra
  35. DEB_FLAGS := -DDEBUG -g3
  36. REL_FLAGS := -O3
  37. LDFLAGS :=
  38. PRE_DEFS :=
  39. MAP_FILE := $(BUILD_DIR)/output.map
  40. MAP_FLAG := -Xlinker -Map=$(MAP_FILE)
  41. #
  42. # =========== Main body and Patterns ===========
  43. #
  44. INC := $(foreach dir,$(INC_DIR),-I$(dir))
  45. DEF := $(foreach def,$(PRE_DEFS),-D$(def))
  46. # source files
  47. # recursive search into current and source directories
  48. SRC := $(wildcard *.cpp)
  49. SRC += $(foreach dir,$(SRC_DIR),$(wildcard $(dir)/*.cpp))
  50. SRC += $(foreach dir,$(SRC_DIR),$(wildcard $(dir)/**/*.cpp))
  51. # exclude every file from the exclude file list
  52. SRC := $(filter-out $(wildcard $(EXC_FILE)),$(SRC))
  53. OBJ := $(foreach file,$(SRC:%.cpp=%.o),$(OBJ_DIR)/$(file))
  54. DEP := $(foreach file,$(SRC:%.cpp=%.d),$(DEP_DIR)/$(file))
  55. # Make Dependencies pattern.
  56. # This little trick enables recompilation only when dependencies change
  57. # and it does so for changes both in source AND header files ;)
  58. #
  59. # It is based on Tom Tromey's method.
  60. #
  61. # Invoke cpp to create makefile rules with dependencies for each source file
  62. $(DEP_DIR)/%.d: %.cpp
  63. @mkdir -p $(@D)
  64. @$(CPP) $(CFLAGS) $(INC) $(DEF) -MM -MT $(OBJ_DIR)/$(<:.cpp=.o) -MF $@ $<
  65. # objects depent on .cpp AND dependency files, which have an empty recipe
  66. $(OBJ_DIR)/%.o: %.cpp $(DEP_DIR)/%.d
  67. @mkdir -p $(@D)
  68. $(CXX) -c $(CFLAGS) $(INC) $(DEF) -o $@ $<
  69. # empty recipe for dependency files. This prevents make errors
  70. $(DEP):
  71. # now include all dependencies
  72. # After all they are makefile dependency rules ;)
  73. include $(wildcard $(DEP))
  74. # main target rule
  75. $(BUILD_DIR)/$(TARGET): $(OBJ)
  76. @mkdir -p $(@D)
  77. @echo Linking to target: $(TARGET)
  78. @echo $(CXX) $(LDFLAGS) $(MAP_FLAG) -o $(@D)/$(TARGET) '$$(OBJ)'
  79. @$(CXX) $(LDFLAGS) $(MAP_FLAG) -o $(@D)/$(TARGET) $(OBJ)
  80. @echo
  81. @echo Print size information
  82. @$(CSIZE) $(@D)/$(TARGET)
  83. @echo Done
  84. .PHONY: clean
  85. clean:
  86. @echo Cleaning build directories
  87. @rm -rf $(OBJ_DIR)
  88. @rm -rf $(DEP_DIR)
  89. @rm -rf $(BUILD_DIR)
  90. #
  91. # ============ User Rules =============
  92. #
  93. .PHONY: debug
  94. debug: CFLAGS += $(DEB_FLAGS)
  95. debug: $(BUILD_DIR)/$(TARGET)
  96. .PHONY: release
  97. release: CFLAGS += $(REL_FLAGS)
  98. release: clean $(BUILD_DIR)/$(TARGET)
  99. .PHONY: all
  100. all: clean release