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# Building
```
./build.sh cc tcc hosted d
./build.sh cc tcc freestanding d
```
# Running on c4:
```
tcc -O0 -g -o c4 c4.c
./c4 cc.c < hello.c
./c4 c4.c cc.c < hello.c
./c4 c4.c c4.c cc.c < hello.c
```
# Local version of c4
This local version of c4 is used to guarantee that our own bootstrapped
cc.c can also run on c4. This makes sure we are not integrating too
complex things into our own compiler.
* currently integrated:
- switch statement from switch-and-structs, adapted c4 to use switch
statements instead of ifs (as in switch-and-structs)
- structures from switch-and-structs
* my own changes:
- constants like EOF, EXIT_SUCCESS, NULL
- standard C block comments along to c++ end of line ones
- negative enum initializers
- do/while loops
- more C functions like isspace, getc, strcmp
- some simplified functions for printing like putstring, putint, putnl
- strict C89 conformance, mainly use standard comment blocks, also
removed some warnings
# Acknoledgments and references
* c4
* https://github.com/rswier/c4.git
c4 - C in four functions
minimalistic C compiler running on an emulator on the IR, inspiration
for this project
* https://github.com/rswier/c4/blob/switch-and-structs/c4.c:
c4 adaptions to provide switch and structs
* https://github.com/EarlGray/c4: a X86 JIT version of c4
* https://github.com/jserv/amacc: based on C4, JIT or native code, for
ARM, quite well documented, also very nice list of compiler
resources on Github page
* selfie
* http://selfie.cs.uni-salzburg.at/:
C* self-hosting C compiler (also emulator, hypervisor) for RISCV,
inspiration for what makes up a minimal C language
* tiny.c
* http://www.iro.umontreal.ca/~felipe/IFT2030-Automne2002/Complements/tinyc.c,
Marc Feeley, really easy and much more readable, meant as educational compiler
* c.c in swieros: https://github.com/rswier/swieros.git
* documentation
* "Compiler Construction", Niklaus Wirth
* https://github.com/DoctorWkt/acwj
* https://www.engr.mun.ca/~theo/Misc/exp_parsing.htm#climbing,
https://en.wikipedia.org/wiki/Operator-precedence_parser#Precedence_climbing_method
|
