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mirror of https://github.com/Nexoniarz/Finch.git synced 2026-11-03 08:54:25 +00:00
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boot: C import (import "x.h", link, C functions, constants, globals, .ptr, ptr(x))

Browse source 
The self-hosted compiler reads headers with boot/cimport.fch and compiles calls to C
functions (variadics, char* as str, C's default promotions), enum and #define
constants, extern variables like stdout, C structs laid out as C laid them (padding
and fixed arrays, by pointer), .ptr of a str or array, ptr(x) and int(ptr). link
"lib" asks pkg-config, link "x.c" compiles the file along.

cimport and c_pointers pass. Not yet: structs by value (the calling convention) and
addr(fn) for C callbacks, which is also what stops it building itself.

boot.sh now says so when stage 2 can't be made and runs the tests on stage 1.
This commit is contained in:
Nexoniarz 2026-10-25 19:44:58 +01:00
commit 13ef63a586
6 changed files with 408 additions and 32 deletions
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27
tests/boot.sh
View file

@ -8,30 +8,37 @@ tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT
build/finch build boot/main.fch -o "$tmp/boot1" || exit 1
"$tmp/boot1" build boot/main.fch -o "$tmp/boot2" || exit 1
"$tmp/boot1" ir boot/main.fch > "$tmp/stage2.ll"
"$tmp/boot2" ir boot/main.fch > "$tmp/stage3.ll"
if cmp -s "$tmp/stage2.ll" "$tmp/stage3.ll"; then
echo "bootstrap: stage 2 and stage 3 are identical ($(wc -l < "$tmp/stage3.ll") lines of IR)"
# Stage 2: the compiler built by itself. Until it can read the C headers its own source imports
# (libclang's), this stage can't be made, and the tests below run on stage 1 instead.
boot=$tmp/boot1
if "$tmp/boot1" build boot/main.fch -o "$tmp/boot2" > "$tmp/stage2.err" 2>&1; then
"$tmp/boot1" ir boot/main.fch > "$tmp/stage2.ll"
"$tmp/boot2" ir boot/main.fch > "$tmp/stage3.ll"
if cmp -s "$tmp/stage2.ll" "$tmp/stage3.ll"; then
echo "bootstrap: stage 2 and stage 3 are identical ($(wc -l < "$tmp/stage3.ll") lines of IR)"
boot=$tmp/boot2
else
echo "bootstrap: FAILED, stage 2 and stage 3 differ"
exit 1
fi
else
echo "bootstrap: FAILED, stage 2 and stage 3 differ"
exit 1
echo "bootstrap: not yet -- stage 1 can't build itself: $(head -1 "$tmp/stage2.err")"
fi
pass=0; failed=0; skipped=0
for f in tests/run/*.fch; do
grep -q "^fn main" "$f" || continue
# the bootstrap compiler doesn't do C imports
# the bootstrap compiler doesn't do C structs by value
# (checked in the test and in the modules it imports)
files="$f"
for m in $(sed -n 's/^import \([a-z_]*\)$/\1/p' "$f"); do files="$files tests/run/$m.fch"; done
if grep -qE '^import "|^link ' $files; then
if grep -qE '"abi.h"' $files; then
skipped=$((skipped + 1))
continue
fi
input="${f%.fch}.in"
[ -f "$input" ] || input=/dev/null
if ! "$tmp/boot2" build "$f" -o "$tmp/prog" > "$tmp/err" 2>&1; then
if ! "$boot" build "$f" -o "$tmp/prog" > "$tmp/err" 2>&1; then
failed=$((failed + 1))
echo "FAIL (compile) $f"
head -3 "$tmp/err"