/*******************************************************************/

/*  slibtool: a skinny libtool implementation, written in C        */

/*  Copyright (C) 2016--2024  SysDeer Technologies, LLC            */

/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */

/*******************************************************************/

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <fcntl.h>

#include <errno.h>

#include <sys/stat.h>

#include <slibtool/slibtool.h>

#include "slibtool_driver_impl.h"

#include "slibtool_errinfo_impl.h"

#include "slibtool_linkcmd_impl.h"

#include "slibtool_mapfile_impl.h"

#include "slibtool_metafile_impl.h"

#include "slibtool_snprintf_impl.h"

#include "slibtool_symlink_impl.h"

#include "slibtool_spawn_impl.h"

int slbt_exec_link_create_import_library(

	const struct slbt_driver_ctx *	dctx,

	struct slbt_exec_ctx *		ectx,

	char *				impfilename,

	char *				deffilename,

	char *				soname)

{

	int	fmdso;

	char ** argv;

	char ** parg;

	char ** aarg;

	char	program[PATH_MAX];

	char    as[PATH_MAX];

	/* dlltool or mdso? */

	if (dctx->cctx->drvflags & SLBT_DRIVER_IMPLIB_DSOMETA)

		fmdso = 1;

	else if (dctx->cctx->drvflags & SLBT_DRIVER_IMPLIB_IDATA)

		fmdso = 0;

	else if (!(strcmp(dctx->cctx->host.flavor,"midipix")))

		fmdso = 1;

	else

		fmdso = 0;

	/* alternate argument vector */

	ectx->argv    = ectx->altv;

	ectx->program = program;

	/* tool-specific argument vector */

	argv = (fmdso)

		? (slbt_get_driver_ictx(dctx))->host.mdso_argv

		: (slbt_get_driver_ictx(dctx))->host.dlltool_argv;

	/* tool-specific argv */

	aarg = ectx->altv;

	if ((parg = argv)) {

		ectx->program = argv[0];

		for (; *parg; )

			*aarg++ = *parg++;

	} else {

		*aarg++ = program;

	}

	/* altv */

	if (fmdso) {

		if (!argv)

			if (slbt_snprintf(program,sizeof(program),

					"%s",dctx->cctx->host.mdso) < 0)

				return SLBT_BUFFER_ERROR(dctx);

		*aarg++ = "-i";

		*aarg++ = impfilename;

		*aarg++ = "-n";

		*aarg++ = soname;

		*aarg++ = deffilename;

		*aarg   = 0;

	} else {

		if (!argv)

			if (slbt_snprintf(program,sizeof(program),

					"%s",dctx->cctx->host.dlltool) < 0)

				return SLBT_BUFFER_ERROR(dctx);

		*aarg++ = "-l";

		*aarg++ = impfilename;

		*aarg++ = "-d";

		*aarg++ = deffilename;

		*aarg++ = "-D";

		*aarg++ = soname;

		*aarg = 0;

		if (dctx->cctx->host.as) {

			if ((argv = (slbt_get_driver_ictx(dctx))->host.as_argv)) {

				*aarg++ = "-S";

				*aarg++ = argv[0];

				for (parg=&argv[1]; *parg; parg++) {

					*aarg++ = "-f";

					*aarg++ = *parg;

				}

			} else {

				if (slbt_snprintf(as,sizeof(as),

						"%s",dctx->cctx->host.as) < 0)

					return SLBT_BUFFER_ERROR(dctx);

				*aarg++ = "-S";

				*aarg++ = as;

			}

			const char * host = dctx->cctx->host.host;

			if (host && (host[0] == 'i')

					&& (host[1] >= '3')

					&& (host[1] <= '6')

					&& (host[2] == '8')

					&& (host[3] == '6')

					&& (host[4] == '-')) {

				*aarg++  = "-f";

				*aarg++ = "--32";

				*aarg++ = "-m";

				*aarg++ = "i386";

				*aarg++ = 0;

			} else {

				*aarg++ = "-f";

				*aarg++ = "--64";

				*aarg++ = "-m";

				*aarg++ = "i386:x86-64";

				*aarg   = 0;

			}

		}

	}

	/* step output */

	if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))

		if (slbt_output_link(dctx,ectx))

			return SLBT_NESTED_ERROR(dctx);

	/* dlltool/mdso spawn */

	if ((slbt_spawn(ectx,true) < 0) && (ectx->pid < 0)) {

		return SLBT_SPAWN_ERROR(dctx);

	} else if (ectx->exitcode) {

		return SLBT_CUSTOM_ERROR(

			dctx,

			fmdso ? SLBT_ERR_MDSO_ERROR : SLBT_ERR_DLLTOOL_ERROR);

	}

	return 0;

}