How to generate pre-processed C code

Question

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C/C++ source file after preprocessing

I am looking to generate all of the pre-processed c code for an application, in this case apache. I downloaded the source code for Apache, and have been running the following command “gcc -c -save-temps *.c” and have tried /.c. When running either of these commands, I get numerous errors, some of which include:

server/core.c:17:17: fatal error: apr.h: No such file or directory
compilation terminated.
server/core_filters.c:22:17: fatal error: apr.h: No such file or directory
compilation terminated.
server/eoc_bucket.c:17:19: fatal error: httpd.h: No such file or directory
compilation terminated.

I am fairly certain the program SHOULD compile correctly since it came right from the Apache website. What should I be doing in order to generate the necessary pre-processed c code. Should I be using the makefile somehow?

The application I am attempting to analyze the source code with which requires the pre-processed c code can found here

Thank you for your help everyone.

`gcc -c` won't generate preprocessed source, it will emit object code instead. — , Dec 25 '12 at 16:53
@H2CO3: You should make that an answer, since that's pretty much all there is to it. — Ilmari Karonen, Dec 25 '12 at 17:01
@IlmariKaronen Maybe, but that doesn't resolve the missing headers' problem. — , Dec 25 '12 at 17:05

score 4 · Accepted Answer · answered Dec 25 '12 at 17:05

4

(So, just to repeat myself by repeating others who repeat me...)

gcc -c produces object code. If you want the preprocessor to be invoked, use gcc -E.

answered Dec 25 '12 at 17:05

That seems to work, and I can definitly give credit. – user1928436 Dec 25 '12 at 21:49
For the generated "pre-processor files", if I wanted to reference everyone in all subdirectories, how would I do that? Right now, I am trying: – user1928436 Dec 25 '12 at 22:02
Also, for the gcc-E option, I get many compilation issues. Is there a way I should be running this command through a makefile or something? – user1928436 Dec 25 '12 at 22:09

How to generate pre-processed C code

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