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abcdefghijklmnopqrstuvwxy

Thu Jan 18, 2007 11:33 pm


bash script or makefile question

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whenever I want to compile a project that uses SDL functions I have to type this:  


[#user@machine program] g++ `sdl-config  --libs --cflags` program.cpp -o program


using a makefile or a script is there a pragmatic way to compile without the `sdl-config --libs --clfags`?


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wtd

Fri Jan 19, 2007 12:23 am


RE:bash script or makefile question

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You would simply add that to a variable like CXX_FLAGS.


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abcdefghijklmnopqrstuvwxy

Fri Jan 19, 2007 12:29 am


RE:bash script or makefile question

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so like?

#makefile
###########
# build options
CXX_Flags = sdl-config --libs --cflags




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rdrake

Fri Jan 19, 2007 12:46 am


RE:bash script or makefile question

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something like the following is often used:
##########
# Variables
CXX=g++
CXXFLAGS=sdl-config --libs --cflags

##########
# Make it all
all : program.o
        $(CXX) program.o -c program.exe

program.o : 
        $(CXX) $(CXXFLAGS) program.cRemember the 8 spaces should be converted to a real tab.


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abcdefghijklmnopqrstuvwxy

Fri Jan 19, 2007 12:46 am


RE:bash script or makefile question

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the above didn't work.  instead i did

# rules
#

program.exec:
          g++ `sdl-config --libs --cflags`



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rdrake

Fri Jan 19, 2007 12:47 am


RE:bash script or makefile question

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Since my post had just been replied to, I cannot change it.  The "-c" option in my example should be "-o".


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abcdefghijklmnopqrstuvwxy

Fri Jan 19, 2007 1:02 am


RE:bash script or makefile question

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rdrake, first thanks, second you also need the `.  


CXX=g++
CXXFLAGS=`sdl-config --libs --cflags`



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md

Fri Jan 19, 2007 1:42 am


RE:bash script or makefile question

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Yes, you still need the quotes for it to work; but you can easily add it to your CXX_FLAGS.


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abcdefghijklmnopqrstuvwxy

Fri Jan 19, 2007 2:39 am


RE:bash script or makefile question

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They aren't quotes.  As someone not too savy with bash I dont know exactly what they do, but I know that they are accents (the tild key) and that single quotes will NOT work.


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md

Fri Jan 19, 2007 11:09 am


RE:bash script or makefile question

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Yes, whatever; I call them quotes ;-) You should split it up though `sdl-config --cflags` goes in CXX_FLAGS and `sdl-config --libs` goes in LD_FLAGS.

LD_FLAGS would be used where you take your object files and create an executable.


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wtd

Fri Jan 19, 2007 11:16 am


RE:bash script or makefile question

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Yes, you do need the backticks as they take the commend inside, execute it, and return its output.