package builder

import (
	"os"
	"path/filepath"

	"github.com/tinygo-org/tinygo/goenv"
)

// Picolibc is a C library for bare metal embedded devices. It was originally
// based on newlib.
var Picolibc = Library{
	name: "picolibc",
	makeHeaders: func(target, includeDir string) error {
		f, err := os.Create(filepath.Join(includeDir, "picolibc.h"))
		if err != nil {
			return err
		}
		return f.Close()
	},
	cflags: func(target, headerPath string) []string {
		newlibDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib")
		return []string{
			"-Werror",
			"-Wall",
			"-std=gnu11",
			"-D_COMPILING_NEWLIB",
			"-DHAVE_ALIAS_ATTRIBUTE",
			"-DTINY_STDIO",
			"-D_IEEE_LIBM",
			"-D__OBSOLETE_MATH_FLOAT=1", // use old math code that doesn't expect a FPU
			"-D__OBSOLETE_MATH_DOUBLE=0",
			"-nostdlibinc",
			"-isystem", newlibDir + "/libc/include",
			"-I" + newlibDir + "/libc/tinystdio",
			"-I" + newlibDir + "/libm/common",
			"-I" + headerPath,
		}
	},
	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib") },
	librarySources: func(target string) []string {
		return picolibcSources
	},
}

var picolibcSources = []string{
	"../../picolibc-stdio.c",

	"libc/tinystdio/asprintf.c",
	"libc/tinystdio/atod_engine.c",
	"libc/tinystdio/atod_ryu.c",
	"libc/tinystdio/atof_engine.c",
	"libc/tinystdio/atof_ryu.c",
	//"libc/tinystdio/atold_engine.c", // have_long_double and not long_double_equals_double
	"libc/tinystdio/clearerr.c",
	"libc/tinystdio/compare_exchange.c",
	"libc/tinystdio/dtoa_data.c",
	"libc/tinystdio/dtoa_engine.c",
	"libc/tinystdio/dtoa_ryu.c",
	"libc/tinystdio/ecvtbuf.c",
	"libc/tinystdio/ecvt.c",
	"libc/tinystdio/ecvt_data.c",
	"libc/tinystdio/ecvtfbuf.c",
	"libc/tinystdio/ecvtf.c",
	"libc/tinystdio/ecvtf_data.c",
	"libc/tinystdio/exchange.c",
	//"libc/tinystdio/fclose.c", // posix-io
	"libc/tinystdio/fcvtbuf.c",
	"libc/tinystdio/fcvt.c",
	"libc/tinystdio/fcvtfbuf.c",
	"libc/tinystdio/fcvtf.c",
	"libc/tinystdio/fdevopen.c",
	//"libc/tinystdio/fdopen.c", // posix-io
	"libc/tinystdio/feof.c",
	"libc/tinystdio/ferror.c",
	"libc/tinystdio/fflush.c",
	"libc/tinystdio/fgetc.c",
	"libc/tinystdio/fgets.c",
	"libc/tinystdio/fileno.c",
	"libc/tinystdio/filestrget.c",
	"libc/tinystdio/filestrputalloc.c",
	"libc/tinystdio/filestrput.c",
	//"libc/tinystdio/fopen.c", // posix-io
	"libc/tinystdio/fprintf.c",
	"libc/tinystdio/fputc.c",
	"libc/tinystdio/fputs.c",
	"libc/tinystdio/fread.c",
	"libc/tinystdio/fscanf.c",
	"libc/tinystdio/fseek.c",
	"libc/tinystdio/ftell.c",
	"libc/tinystdio/ftoa_data.c",
	"libc/tinystdio/ftoa_engine.c",
	"libc/tinystdio/ftoa_ryu.c",
	"libc/tinystdio/fwrite.c",
	"libc/tinystdio/gcvtbuf.c",
	"libc/tinystdio/gcvt.c",
	"libc/tinystdio/gcvtfbuf.c",
	"libc/tinystdio/gcvtf.c",
	"libc/tinystdio/getchar.c",
	"libc/tinystdio/gets.c",
	"libc/tinystdio/matchcaseprefix.c",
	"libc/tinystdio/perror.c",
	//"libc/tinystdio/posixiob.c", // posix-io
	//"libc/tinystdio/posixio.c", // posix-io
	"libc/tinystdio/printf.c",
	"libc/tinystdio/putchar.c",
	"libc/tinystdio/puts.c",
	"libc/tinystdio/ryu_divpow2.c",
	"libc/tinystdio/ryu_log10.c",
	"libc/tinystdio/ryu_log2pow5.c",
	"libc/tinystdio/ryu_pow5bits.c",
	"libc/tinystdio/ryu_table.c",
	"libc/tinystdio/ryu_umul128.c",
	"libc/tinystdio/scanf.c",
	"libc/tinystdio/setbuf.c",
	"libc/tinystdio/setvbuf.c",
	//"libc/tinystdio/sflags.c", // posix-io
	"libc/tinystdio/snprintf.c",
	"libc/tinystdio/snprintfd.c",
	"libc/tinystdio/snprintff.c",
	"libc/tinystdio/sprintf.c",
	"libc/tinystdio/sprintfd.c",
	"libc/tinystdio/sprintff.c",
	"libc/tinystdio/sscanf.c",
	"libc/tinystdio/strfromd.c",
	"libc/tinystdio/strfromf.c",
	"libc/tinystdio/strtod.c",
	"libc/tinystdio/strtod_l.c",
	"libc/tinystdio/strtof.c",
	//"libc/tinystdio/strtold.c",   // have_long_double and not long_double_equals_double
	//"libc/tinystdio/strtold_l.c", // have_long_double and not long_double_equals_double
	"libc/tinystdio/ungetc.c",
	"libc/tinystdio/vasprintf.c",
	"libc/tinystdio/vfiprintf.c",
	"libc/tinystdio/vfiscanf.c",
	"libc/tinystdio/vfprintf.c",
	"libc/tinystdio/vfprintff.c",
	"libc/tinystdio/vfscanf.c",
	"libc/tinystdio/vfscanff.c",
	"libc/tinystdio/vprintf.c",
	"libc/tinystdio/vscanf.c",
	"libc/tinystdio/vsnprintf.c",
	"libc/tinystdio/vsprintf.c",
	"libc/tinystdio/vsscanf.c",

	"libc/string/bcmp.c",
	"libc/string/bcopy.c",
	"libc/string/bzero.c",
	"libc/string/explicit_bzero.c",
	"libc/string/ffsl.c",
	"libc/string/ffsll.c",
	"libc/string/fls.c",
	"libc/string/flsl.c",
	"libc/string/flsll.c",
	"libc/string/gnu_basename.c",
	"libc/string/index.c",
	"libc/string/memccpy.c",
	"libc/string/memchr.c",
	"libc/string/memcmp.c",
	"libc/string/memcpy.c",
	"libc/string/memmem.c",
	"libc/string/memmove.c",
	"libc/string/mempcpy.c",
	"libc/string/memrchr.c",
	"libc/string/memset.c",
	"libc/string/rawmemchr.c",
	"libc/string/rindex.c",
	"libc/string/stpcpy.c",
	"libc/string/stpncpy.c",
	"libc/string/strcasecmp.c",
	"libc/string/strcasecmp_l.c",
	"libc/string/strcasestr.c",
	"libc/string/strcat.c",
	"libc/string/strchr.c",
	"libc/string/strchrnul.c",
	"libc/string/strcmp.c",
	"libc/string/strcoll.c",
	"libc/string/strcoll_l.c",
	"libc/string/strcpy.c",
	"libc/string/strcspn.c",
	"libc/string/strdup.c",
	"libc/string/strerror.c",
	"libc/string/strerror_r.c",
	"libc/string/strlcat.c",
	"libc/string/strlcpy.c",
	"libc/string/strlen.c",
	"libc/string/strlwr.c",
	"libc/string/strncasecmp.c",
	"libc/string/strncasecmp_l.c",
	"libc/string/strncat.c",
	"libc/string/strncmp.c",
	"libc/string/strncpy.c",
	"libc/string/strndup.c",
	"libc/string/strnlen.c",
	"libc/string/strnstr.c",
	"libc/string/strpbrk.c",
	"libc/string/strrchr.c",
	"libc/string/strsep.c",
	"libc/string/strsignal.c",
	"libc/string/strspn.c",
	"libc/string/strstr.c",
	"libc/string/strtok.c",
	"libc/string/strtok_r.c",
	"libc/string/strupr.c",
	"libc/string/strverscmp.c",
	"libc/string/strxfrm.c",
	"libc/string/strxfrm_l.c",
	"libc/string/swab.c",
	"libc/string/timingsafe_bcmp.c",
	"libc/string/timingsafe_memcmp.c",
	"libc/string/u_strerr.c",
	"libc/string/wcpcpy.c",
	"libc/string/wcpncpy.c",
	"libc/string/wcscasecmp.c",
	"libc/string/wcscasecmp_l.c",
	"libc/string/wcscat.c",
	"libc/string/wcschr.c",
	"libc/string/wcscmp.c",
	"libc/string/wcscoll.c",
	"libc/string/wcscoll_l.c",
	"libc/string/wcscpy.c",
	"libc/string/wcscspn.c",
	"libc/string/wcsdup.c",
	"libc/string/wcslcat.c",
	"libc/string/wcslcpy.c",
	"libc/string/wcslen.c",
	"libc/string/wcsncasecmp.c",
	"libc/string/wcsncasecmp_l.c",
	"libc/string/wcsncat.c",
	"libc/string/wcsncmp.c",
	"libc/string/wcsncpy.c",
	"libc/string/wcsnlen.c",
	"libc/string/wcspbrk.c",
	"libc/string/wcsrchr.c",
	"libc/string/wcsspn.c",
	"libc/string/wcsstr.c",
	"libc/string/wcstok.c",
	"libc/string/wcswidth.c",
	"libc/string/wcsxfrm.c",
	"libc/string/wcsxfrm_l.c",
	"libc/string/wcwidth.c",
	"libc/string/wmemchr.c",
	"libc/string/wmemcmp.c",
	"libc/string/wmemcpy.c",
	"libc/string/wmemmove.c",
	"libc/string/wmempcpy.c",
	"libc/string/wmemset.c",
	"libc/string/xpg_strerror_r.c",

	"libm/common/sf_finite.c",
	"libm/common/sf_copysign.c",
	"libm/common/sf_modf.c",
	"libm/common/sf_scalbn.c",
	"libm/common/sf_cbrt.c",
	"libm/common/sf_exp10.c",
	"libm/common/sf_expm1.c",
	"libm/common/sf_ilogb.c",
	"libm/common/sf_infinity.c",
	"libm/common/sf_isinf.c",
	"libm/common/sf_isinff.c",
	"libm/common/sf_isnan.c",
	"libm/common/sf_isnanf.c",
	"libm/common/sf_issignaling.c",
	"libm/common/sf_log1p.c",
	"libm/common/sf_nan.c",
	"libm/common/sf_nextafter.c",
	"libm/common/sf_pow10.c",
	"libm/common/sf_rint.c",
	"libm/common/sf_logb.c",
	"libm/common/sf_fdim.c",
	"libm/common/sf_fma.c",
	"libm/common/sf_fmax.c",
	"libm/common/sf_fmin.c",
	"libm/common/sf_fpclassify.c",
	"libm/common/sf_lrint.c",
	"libm/common/sf_llrint.c",
	"libm/common/sf_lround.c",
	"libm/common/sf_llround.c",
	"libm/common/sf_nearbyint.c",
	"libm/common/sf_remquo.c",
	"libm/common/sf_round.c",
	"libm/common/sf_scalbln.c",
	"libm/common/sf_trunc.c",
	"libm/common/sf_exp.c",
	"libm/common/sf_exp2.c",
	"libm/common/sf_exp2_data.c",
	"libm/common/sf_log.c",
	"libm/common/sf_log_data.c",
	"libm/common/sf_log2.c",
	"libm/common/sf_log2_data.c",
	"libm/common/sf_pow_log2_data.c",
	"libm/common/sf_pow.c",

	"libm/common/s_finite.c",
	"libm/common/s_copysign.c",
	"libm/common/s_modf.c",
	"libm/common/s_scalbn.c",
	"libm/common/s_cbrt.c",
	"libm/common/s_exp10.c",
	"libm/common/s_expm1.c",
	"libm/common/s_ilogb.c",
	"libm/common/s_infinity.c",
	"libm/common/s_isinf.c",
	"libm/common/s_isinfd.c",
	"libm/common/s_isnan.c",
	"libm/common/s_isnand.c",
	"libm/common/s_issignaling.c",
	"libm/common/s_log1p.c",
	"libm/common/s_nan.c",
	"libm/common/s_nextafter.c",
	"libm/common/s_pow10.c",
	"libm/common/s_rint.c",
	"libm/common/s_logb.c",
	"libm/common/s_log2.c",
	"libm/common/s_fdim.c",
	"libm/common/s_fma.c",
	"libm/common/s_fmax.c",
	"libm/common/s_fmin.c",
	"libm/common/s_fpclassify.c",
	"libm/common/s_lrint.c",
	"libm/common/s_llrint.c",
	"libm/common/s_lround.c",
	"libm/common/s_llround.c",
	"libm/common/s_nearbyint.c",
	"libm/common/s_remquo.c",
	"libm/common/s_round.c",
	"libm/common/s_scalbln.c",
	"libm/common/s_signbit.c",
	"libm/common/s_trunc.c",
	"libm/common/exp.c",
	"libm/common/exp2.c",
	"libm/common/exp_data.c",
	"libm/common/math_err_with_errno.c",
	"libm/common/math_err_xflow.c",
	"libm/common/math_err_uflow.c",
	"libm/common/math_err_oflow.c",
	"libm/common/math_err_divzero.c",
	"libm/common/math_err_invalid.c",
	"libm/common/math_err_may_uflow.c",
	"libm/common/math_err_check_uflow.c",
	"libm/common/math_err_check_oflow.c",
	"libm/common/log.c",
	"libm/common/log_data.c",
	"libm/common/log2.c",
	"libm/common/log2_data.c",
	"libm/common/pow.c",
	"libm/common/pow_log_data.c",

	"libm/math/e_acos.c",
	"libm/math/e_acosh.c",
	"libm/math/e_asin.c",
	"libm/math/e_atan2.c",
	"libm/math/e_atanh.c",
	"libm/math/e_cosh.c",
	"libm/math/e_exp.c",
	"libm/math/ef_acos.c",
	"libm/math/ef_acosh.c",
	"libm/math/ef_asin.c",
	"libm/math/ef_atan2.c",
	"libm/math/ef_atanh.c",
	"libm/math/ef_cosh.c",
	"libm/math/ef_exp.c",
	"libm/math/ef_fmod.c",
	"libm/math/ef_hypot.c",
	"libm/math/ef_j0.c",
	"libm/math/ef_j1.c",
	"libm/math/ef_jn.c",
	"libm/math/ef_lgamma.c",
	"libm/math/ef_log10.c",
	"libm/math/ef_log.c",
	"libm/math/e_fmod.c",
	"libm/math/ef_pow.c",
	"libm/math/ef_remainder.c",
	"libm/math/ef_rem_pio2.c",
	"libm/math/ef_scalb.c",
	"libm/math/ef_sinh.c",
	"libm/math/ef_sqrt.c",
	"libm/math/ef_tgamma.c",
	"libm/math/e_hypot.c",
	"libm/math/e_j0.c",
	"libm/math/e_j1.c",
	"libm/math/e_jn.c",
	"libm/math/e_lgamma.c",
	"libm/math/e_log10.c",
	"libm/math/e_log.c",
	"libm/math/e_pow.c",
	"libm/math/e_remainder.c",
	"libm/math/e_rem_pio2.c",
	"libm/math/erf_lgamma.c",
	"libm/math/er_lgamma.c",
	"libm/math/e_scalb.c",
	"libm/math/e_sinh.c",
	"libm/math/e_sqrt.c",
	"libm/math/e_tgamma.c",
	"libm/math/s_asinh.c",
	"libm/math/s_atan.c",
	"libm/math/s_ceil.c",
	"libm/math/s_cos.c",
	"libm/math/s_erf.c",
	"libm/math/s_fabs.c",
	"libm/math/sf_asinh.c",
	"libm/math/sf_atan.c",
	"libm/math/sf_ceil.c",
	"libm/math/sf_cos.c",
	"libm/math/sf_erf.c",
	"libm/math/sf_fabs.c",
	"libm/math/sf_floor.c",
	"libm/math/sf_frexp.c",
	"libm/math/sf_ldexp.c",
	"libm/math/s_floor.c",
	"libm/math/s_frexp.c",
	"libm/math/sf_signif.c",
	"libm/math/sf_sin.c",
	"libm/math/sf_tan.c",
	"libm/math/sf_tanh.c",
	"libm/math/s_ldexp.c",
	"libm/math/s_signif.c",
	"libm/math/s_sin.c",
	"libm/math/s_tan.c",
	"libm/math/s_tanh.c",
}