Thread: How would you make pros create a makefile for this scenario?

Greetings, all.

It's high time I began using a single Makefile for compiling a C app across various platforms.

I've been relearning C while working on a project, so have not yet had time to delve into make; instead I have a single, long gcc command in some .bat / .sh files. Terrible I know; needless to say that each time I change one such file, I have to make those same changes in the others. Hence, make. Conditions that need to be handled:

• Builds for multiple OS & architecture, i.e. for now (at least) 32 & 64-bit for Windows & Linux, thus I need access to that info in the Makefile, and executables should go into distinct folders under /build: i.e. /win32, /win64, /lin32, /lin64 (et cetera, in future).
• Required DLLs should be copied in alongside the built executable.

Question Can someone give me an idea of how best to go about constructing a Makefile using the info below? And explain how each part works / why it is needed for my particular case? I have an understanding of the prerequisites approach by which Makefiles are built. Even just a starting point would be appreciated. This kind of thing has always been a weak point for me. Thanks in advance.

Here is my project directory tree:

Code:

+---build
    |   +---lin64
    |   +---win32
    +---fonts
    +---include
    |   +---enet
    |   +---GL
    |   +---libxml
    |   \---ncursesw
    +---lib
    +---licenses
    +---shaders
    \---src
        +---my
        |   +---bitwise
        |   \---math
        \---glew

And mingw `gcc` for Windows 32-bit compile:

Code:

gcc -Iinclude ./src/main.c ./src/MainCtrl.c ./src/MainView.c ./src/PerspectiveView.c ./src/LogView.c ./src/LobbyView.c ./src/TerminalView.c ./src/World.c ./src/Chunk.c ./src/CellPattern.c ./src/CellPlan.c ./src/GridPoint.c ./src/Entity.c ./src/InfluenceRadial.c ./src/AoIList.c ./src/AoI.c ./src/ChunkRenderable.c ./src/PrimitiveRenderable.c ./src/Geometry.c ./src/glew/glew.c ./src/stb/stb_image_aug.c ../curt/list_generic.c ../curt/map_generic.c ../curt/intMap.c ../curt/floatMap.c ../hedgehog/hedgehog.c ./src/Inputs.c ./src/InputResponse.c ./src/Network.c ../Disjunction/c/disjunction.c ./src/my/math/Range.c ./src/my/math/Point.c -Llib -lglfw3-32 -lopengl32 -lgdi32 -lenet-32 -lws2_32 -lwinmm -llibxml2-32 -L. -ldll32/libncursesw6 -std=c11 -m32 -w -Wall -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wstrict-prototypes -Wlogical-op -Wcast-align -Wconversion -Wpedantic -Wfloat-equal -fopenmp -O0 -o ./build/win32/wa

And the `gcc` for Linux 64-bit compile:

Code:

gcc -Iinclude -I/usr/include/libxml2 ./src/main.c ./src/MainCtrl.c ./src/MainView.c ./src/PerspectiveView.c ./src/LogView.c ./src/LobbyView.c ./src/TerminalView.c ./src/World.c ./src/Chunk.c ./src/CellPattern.c ./src/CellPlan.c ./src/GridPoint.c ./src/Entity.c ./src/InfluenceRadial.c ./src/AoIList.c ./src/AoI.c ./src/ChunkRenderable.c ./src/PrimitiveRenderable.c ./src/Geometry.c ./src/glew/glew.c ./src/stb/stb_image_aug.c ../curt/list_generic.c ../curt/map_generic.c ../curt/intMap.c ../curt/floatMap.c ../hedgehog/hedgehog.c ./src/Inputs.c ./src/InputResponse.c ./src/Network.c ../disjunction/c/disjunction.c ./src/my/math/Range.c ./src/my/math/Point.c -Llib -L/usr/lib -l:libglfw.so.3 -lncurses -lGL -lxml2 -lenet -lm -std=c11 -m64 -w -Wall -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wstrict-prototypes -Wlogical-op -Wcast-align -Wconversion -Wpedantic -Wfloat-equal -fopenmp -g -o ./wa.elf

(worth diffing these.)