tjh.dev
1if [ -e .attrs.sh ]; then source .attrs.sh; fi
2set -x
3
4export NIX_DEBUG=1
5
6source $stdenv/setup
7
8export NIX_ENFORCE_PURITY=1
9
10mkdir $out
11mkdir $out/bin
12
13cat > hello.c <<EOF
14#include <stdio.h>
15
16int main(int argc, char * * argv)
17{
18 printf("Hello World!\n");
19 return 0;
20}
21EOF
22
23#gcc -I/nix/store/foo -I /nix/store/foo -I/usr/lib -I /usr/lib hello.c -o $out/bin/hello
24gcc -I`pwd` -L /nix/store/abcd/lib -isystem /usr/lib hello.c -o $out/bin/hello
25
26$out/bin/hello
27
28cat > hello2.cc <<EOF
29#include <iostream>
30
31int main(int argc, char * * argv)
32{
33 std::cout << "Hello World!\n";
34 std::cout << VALUE << std::endl;
35 return 0;
36}
37EOF
38
39g++ hello2.cc -o $out/bin/hello2 -DVALUE="1 + 2 * 3"
40
41$out/bin/hello2
42
43ld -v