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if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
set -x
export NIX_DEBUG=1
source $stdenv/setup
export NIX_ENFORCE_PURITY=1
mkdir $out
mkdir $out/bin
cat > hello.c <<EOF
#include <stdio.h>
int main(int argc, char * * argv)
{
printf("Hello World!\n");
return 0;
}
EOF
#gcc -I/nix/store/foo -I /nix/store/foo -I/usr/lib -I /usr/lib hello.c -o $out/bin/hello
gcc -I`pwd` -L /nix/store/abcd/lib -isystem /usr/lib hello.c -o $out/bin/hello
$out/bin/hello
cat > hello2.cc <<EOF
#include <iostream>
int main(int argc, char * * argv)
{
std::cout << "Hello World!\n";
std::cout << VALUE << std::endl;
return 0;
}
EOF
g++ hello2.cc -o $out/bin/hello2 -DVALUE="1 + 2 * 3"
$out/bin/hello2
ld -v
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