Blame src/logic/slbt_exec_link.c

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/*******************************************************************/
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/*  slibtool: a skinny libtool implementation, written in C        */
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/*  Copyright (C) 2016--2024  SysDeer Technologies, LLC            */
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/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */
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/*******************************************************************/
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Lucio Andrés Illanes Albornoz e945f1
#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <slibtool/slibtool.h>
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#include "slibtool_spawn_impl.h"
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#include "slibtool_mkdir_impl.h"
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#include "slibtool_driver_impl.h"
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#include "slibtool_dprintf_impl.h"
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#include "slibtool_errinfo_impl.h"
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#include "slibtool_linkcmd_impl.h"
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#include "slibtool_mapfile_impl.h"
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#include "slibtool_metafile_impl.h"
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#include "slibtool_readlink_impl.h"
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#include "slibtool_snprintf_impl.h"
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#include "slibtool_symlink_impl.h"
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/*******************************************************************/
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/*                                                                 */
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/* -o <ltlib>  switches              input   result                */
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/* ----------  --------------------- -----   ------                */
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/* libfoo.a    [-shared|-static]     bar.lo  libfoo.a              */
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/*                                                                 */
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/* ar -crs libfoo.a bar.o                                          */
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/*                                                                 */
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/*******************************************************************/
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/*******************************************************************/
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/*                                                                 */
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/* -o <ltlib>  switches              input   result                */
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/* ----------  --------------------- -----   ------                */
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/* libfoo.la   -shared               bar.lo  libfoo.la             */
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/*                                           .libs/libfoo.a        */
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/*                                           .libs/libfoo.la (lnk) */
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/*                                                                 */
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/* ar -crs .libs/libfoo.a .libs/bar.o                              */
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/* (generate libfoo.la)                                            */
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/* ln -s ../libfoo.la .libs/libfoo.la                              */
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/*                                                                 */
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/*******************************************************************/
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/*******************************************************************/
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/*                                                                 */
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/* -o <ltlib>  switches              input   result                */
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/* ----------  --------------------- -----   ------                */
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/* libfoo.la   -static               bar.lo  libfoo.la             */
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/*                                           .libs/libfoo.a        */
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/*                                           .libs/libfoo.la (lnk) */
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/*                                                                 */
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/* ar -crs .libs/libfoo.a bar.o                                    */
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/* (generate libfoo.la)                                            */
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/* ln -s ../libfoo.la .libs/libfoo.la                              */
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/*                                                                 */
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/*******************************************************************/
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static int slbt_exec_link_create_library_symlink(
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	const struct slbt_driver_ctx *	dctx,
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	struct slbt_exec_ctx *		ectx,
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	bool				fmajor)
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{
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	char	target[PATH_MAX];
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	char	lnkname[PATH_MAX];
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	if (ectx->relfilename && dctx->cctx->verinfo.verinfo) {
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		strcpy(target,ectx->relfilename);
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		sprintf(lnkname,"%s.dualver",ectx->dsofilename);
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		if (slbt_create_symlink(
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				dctx,ectx,
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				target,lnkname,
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				SLBT_SYMLINK_DEFAULT))
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			return SLBT_NESTED_ERROR(dctx);
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	} else if (ectx->relfilename) {
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		strcpy(target,ectx->relfilename);
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		sprintf(lnkname,"%s.release",ectx->dsofilename);
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		if (slbt_create_symlink(
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				dctx,ectx,
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				target,lnkname,
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				SLBT_SYMLINK_DEFAULT))
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			return SLBT_NESTED_ERROR(dctx);
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	} else {
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		sprintf(target,"%s%s.%d.%d.%d%s",
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			ectx->dsobasename,
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			dctx->cctx->settings.osdsuffix,
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			dctx->cctx->verinfo.major,
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			dctx->cctx->verinfo.minor,
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			dctx->cctx->verinfo.revision,
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			dctx->cctx->settings.osdfussix);
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	}
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600957
	if (fmajor && ectx->dsorellnkname) {
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		sprintf(lnkname,"%s.%d",
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			ectx->dsorellnkname,
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			dctx->cctx->verinfo.major);
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	} else if (fmajor) {
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		sprintf(lnkname,"%s%s.%d%s",
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			ectx->dsobasename,
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			dctx->cctx->settings.osdsuffix,
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			dctx->cctx->verinfo.major,
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			dctx->cctx->settings.osdfussix);
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	} else {
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		strcpy(lnkname,ectx->dsofilename);
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	}
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	if (fmajor && (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE))
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		return slbt_util_copy_file(
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			ectx,
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			target,lnkname);
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	else
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		return slbt_create_symlink(
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			dctx,ectx,
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			target,lnkname,
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			SLBT_SYMLINK_DEFAULT);
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}
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int slbt_exec_link(const struct slbt_driver_ctx * dctx)
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{
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	int			ret;
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	const char *		output;
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	char *			dot;
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	struct slbt_exec_ctx *	ectx;
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	bool			fpic;
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	bool			fnodsolib;
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	bool			fnoarchive;
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	bool			fstaticobjs;
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	char			soname[PATH_MAX];
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	char			soxyz [PATH_MAX];
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	char			solnk [PATH_MAX];
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	char			arname[PATH_MAX];
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	char			target[PATH_MAX];
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	char			lnkname[PATH_MAX];
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	/* dry run */
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	if (dctx->cctx->drvflags & SLBT_DRIVER_DRY_RUN)
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		return 0;
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	/* context */
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	if (slbt_ectx_get_exec_ctx(dctx,&ectx) < 0)
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		return SLBT_NESTED_ERROR(dctx);
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4469ed
	/* libfoo.so.x.y.z */
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	if (slbt_snprintf(soxyz,sizeof(soxyz),
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				"%s%s%s%s%s.%d.%d.%d%s",
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				ectx->sonameprefix,
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				dctx->cctx->libname,
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				dctx->cctx->release ? "-" : "",
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				dctx->cctx->release ? dctx->cctx->release : "",
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				dctx->cctx->settings.osdsuffix,
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				dctx->cctx->verinfo.major,
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				dctx->cctx->verinfo.minor,
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				dctx->cctx->verinfo.revision,
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				dctx->cctx->settings.osdfussix) < 0) {
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		slbt_ectx_free_exec_ctx(ectx);
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		return SLBT_BUFFER_ERROR(dctx);
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	}
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4469ed
	/* libfoo.so.x */
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	sprintf(soname,"%s%s%s%s%s.%d%s",
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		ectx->sonameprefix,
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		dctx->cctx->libname,
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		dctx->cctx->release ? "-" : "",
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		dctx->cctx->release ? dctx->cctx->release : "",
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		dctx->cctx->settings.osdsuffix,
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		dctx->cctx->verinfo.major,
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		dctx->cctx->settings.osdfussix);
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4469ed
	/* libfoo.so */
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	sprintf(solnk,"%s%s%s",
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		ectx->sonameprefix,
4469ed
		dctx->cctx->libname,
4469ed
		dctx->cctx->settings.dsosuffix);
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4469ed
	/* libfoo.a */
4469ed
	sprintf(arname,"%s%s%s",
4469ed
		dctx->cctx->settings.arprefix,
4469ed
		dctx->cctx->libname,
4469ed
		dctx->cctx->settings.arsuffix);
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	/* output suffix */
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	output = dctx->cctx->output;
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	dot    = strrchr(output,'.');
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	/* .libs directory */
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	if (slbt_mkdir(dctx,ectx->ldirname)) {
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		ret = SLBT_SYSTEM_ERROR(dctx,ectx->ldirname);
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		slbt_ectx_free_exec_ctx(ectx);
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		return ret;
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	}
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	/* non-pic libfoo.a */
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	if (dot && !strcmp(dot,".a"))
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		if (slbt_exec_link_create_archive(dctx,ectx,output,false)) {
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			slbt_ectx_free_exec_ctx(ectx);
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			return SLBT_NESTED_ERROR(dctx);
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		}
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93e38b
	/* fpic, fstaticobjs, fnodsolib, fnoarchive */
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	if (dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC) {
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		fstaticobjs = true;
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		fnodsolib   = true;
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		fnoarchive  = false;
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		fpic        = false;
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	} else if (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_SHARED) {
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		fstaticobjs = true;
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		fnodsolib   = true;
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		fnoarchive  = false;
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		fpic        = false;
372423
	} else if (dctx->cctx->drvflags & SLBT_DRIVER_SHARED) {
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		fstaticobjs = false;
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		fpic        = true;
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93e38b
		if (dctx->cctx->libname && dctx->cctx->rpath) {
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			fnodsolib  = false;
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			fnoarchive = (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_STATIC);
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93e38b
		} else if (dctx->cctx->libname) {
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			fnodsolib  = true;
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			fnoarchive = false;
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		} else {
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			fnodsolib  = true;
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			fnoarchive = true;
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		}
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	} else {
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		fstaticobjs = false;
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		fnodsolib   = true;
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		fnoarchive  = false;
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		fpic        = false;
372423
	}
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	/* libfoo.so.def.{flavor} */
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	if (dctx->cctx->libname) {
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		if (slbt_exec_link_create_host_tag(
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				dctx,ectx,
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				ectx->deffilename))
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			return SLBT_NESTED_ERROR(dctx);
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	}
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	/* pic libfoo.a */
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	if (dot && !strcmp(dot,".la") && !fnoarchive)
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		if (slbt_exec_link_create_archive(
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				dctx,ectx,
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				ectx->arfilename,
4ee438
				fpic)) {
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			slbt_ectx_free_exec_ctx(ectx);
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			return SLBT_NESTED_ERROR(dctx);
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		}
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d55a46
	/* static-only libfoo.la */
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	if (fstaticobjs && dot && !strcmp(dot,".la")) {
d55a46
		const struct slbt_flavor_settings * dflavor;
d55a46
4373b8
		if (slbt_host_flavor_settings("default",&dflavor) < 0)
d55a46
			return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_LINK_FLOW);
d55a46
d55a46
		if (strcmp(dctx->cctx->settings.dsosuffix,dflavor->dsosuffix)) {
d55a46
			strcpy(target,ectx->lafilename);
d55a46
			sprintf(lnkname,"%s.shrext%s",
d55a46
				ectx->lafilename,
d55a46
				dctx->cctx->settings.dsosuffix);
d55a46
d55a46
			if (slbt_create_symlink(
d55a46
					dctx,ectx,
d55a46
					target,lnkname,
d55a46
					SLBT_SYMLINK_DEFAULT))
d55a46
				return SLBT_NESTED_ERROR(dctx);
d55a46
d55a46
			strcpy(target,lnkname);
d55a46
			sprintf(lnkname,"%s.shrext",ectx->lafilename);
d55a46
d55a46
			if (slbt_create_symlink(
d55a46
					dctx,ectx,
d55a46
					target,lnkname,
d55a46
					SLBT_SYMLINK_DEFAULT))
d55a46
				return SLBT_NESTED_ERROR(dctx);
d55a46
		}
c7981c
c7981c
		if (slbt_create_symlink(
c7981c
				dctx,ectx,
c7981c
				"/dev/null",
c7981c
				ectx->deffilename,
93e38b
				SLBT_SYMLINK_LITERAL))
c7981c
			return SLBT_NESTED_ERROR(dctx);
d55a46
	}
d55a46
93e38b
	/* static archive or convenience library only? */
93e38b
	if (fnodsolib && ectx->dsofilename) {
93e38b
		if (slbt_create_symlink(
93e38b
				dctx,ectx,
93e38b
				"/dev/null",
93e38b
				ectx->dsofilename,
93e38b
				SLBT_SYMLINK_DEVNULL))
93e38b
			return SLBT_NESTED_ERROR(dctx);
93e38b
	}
93e38b
93e38b
	/* disable static? */
93e38b
	if (fnoarchive && ectx->arfilename) {
93e38b
		if (slbt_create_symlink(
93e38b
				dctx,ectx,
93e38b
				"/dev/null",
93e38b
				ectx->arfilename,
93e38b
				SLBT_SYMLINK_DEVNULL))
93e38b
			return SLBT_NESTED_ERROR(dctx);
93e38b
	}
93e38b
d83e2a
	/* dynamic library via -module */
93e38b
	if (dctx->cctx->rpath && !fstaticobjs) {
89f5e3
		if (dctx->cctx->drvflags & SLBT_DRIVER_MODULE) {
89f5e3
			if (!dot || strcmp(dot,".la")) {
89f5e3
				if (slbt_exec_link_create_library(
89f5e3
						dctx,ectx,
89f5e3
						ectx->dsobasename,
89f5e3
						ectx->dsofilename,
4af256
						ectx->relfilename,
4af256
						false)) {
2e30eb
					slbt_ectx_free_exec_ctx(ectx);
89f5e3
					return SLBT_NESTED_ERROR(dctx);
89f5e3
				}
89f5e3
2e30eb
				slbt_ectx_free_exec_ctx(ectx);
89f5e3
				return 0;
ff7fb8
			}
712060
		}
712060
	}
712060
b3940a
	/* dynamic library */
93e38b
	if (dot && !strcmp(dot,".la") && dctx->cctx->rpath && !fstaticobjs) {
26354e
		const struct slbt_flavor_settings * dflavor;
26354e
4373b8
		if (slbt_host_flavor_settings("default",&dflavor) < 0)
26354e
			return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_LINK_FLOW);
26354e
d75902
		/* -shrext support */
d75902
		if (dctx->cctx->shrext) {
d75902
			strcpy(target,ectx->lafilename);
d75902
			sprintf(lnkname,"%s.shrext%s",ectx->lafilename,dctx->cctx->shrext);
d75902
d75902
			if (slbt_create_symlink(
d75902
					dctx,ectx,
d75902
					target,lnkname,
cc0827
					SLBT_SYMLINK_DEFAULT))
d75902
				return SLBT_NESTED_ERROR(dctx);
d75902
d75902
			strcpy(target,lnkname);
d75902
			sprintf(lnkname,"%s.shrext",ectx->lafilename);
d75902
d75902
			if (slbt_create_symlink(
d75902
					dctx,ectx,
d75902
					target,lnkname,
cc0827
					SLBT_SYMLINK_DEFAULT))
d75902
				return SLBT_NESTED_ERROR(dctx);
d75902
26354e
		/* non-default shared-object suffix support */
26354e
		} else if (strcmp(dctx->cctx->settings.dsosuffix,dflavor->dsosuffix)) {
26354e
			strcpy(target,ectx->lafilename);
26354e
			sprintf(lnkname,"%s.shrext%s",
26354e
				ectx->lafilename,
26354e
				dctx->cctx->settings.dsosuffix);
26354e
26354e
			if (slbt_create_symlink(
26354e
					dctx,ectx,
26354e
					target,lnkname,
26354e
					SLBT_SYMLINK_DEFAULT))
26354e
				return SLBT_NESTED_ERROR(dctx);
26354e
26354e
			strcpy(target,lnkname);
26354e
			sprintf(lnkname,"%s.shrext",ectx->lafilename);
26354e
26354e
			if (slbt_create_symlink(
26354e
					dctx,ectx,
26354e
					target,lnkname,
26354e
					SLBT_SYMLINK_DEFAULT))
26354e
				return SLBT_NESTED_ERROR(dctx);
26354e
		}
d75902
b3940a
		/* linking: libfoo.so.x.y.z */
b3940a
		if (slbt_exec_link_create_library(
b3940a
				dctx,ectx,
08f5f9
				ectx->dsobasename,
112a2b
				ectx->dsofilename,
4af256
				ectx->relfilename,
4af256
				false)) {
2e30eb
			slbt_ectx_free_exec_ctx(ectx);
9c9f28
			return SLBT_NESTED_ERROR(dctx);
b3940a
		}
b3940a
867d1e
		if (!(dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION)) {
867d1e
			/* symlink: libfoo.so.x --> libfoo.so.x.y.z */
867d1e
			if (slbt_exec_link_create_library_symlink(
867d1e
					dctx,ectx,
867d1e
					true)) {
2e30eb
				slbt_ectx_free_exec_ctx(ectx);
9c9f28
				return SLBT_NESTED_ERROR(dctx);
867d1e
			}
b3940a
867d1e
			/* symlink: libfoo.so --> libfoo.so.x.y.z */
867d1e
			if (slbt_exec_link_create_library_symlink(
867d1e
					dctx,ectx,
867d1e
					false)) {
2e30eb
				slbt_ectx_free_exec_ctx(ectx);
9c9f28
				return SLBT_NESTED_ERROR(dctx);
867d1e
			}
112a2b
		} else if (ectx->relfilename) {
112a2b
			/* symlink: libfoo.so --> libfoo-x.y.z.so */
112a2b
			if (slbt_exec_link_create_library_symlink(
112a2b
					dctx,ectx,
112a2b
					false)) {
2e30eb
				slbt_ectx_free_exec_ctx(ectx);
9c9f28
				return SLBT_NESTED_ERROR(dctx);
112a2b
			}
b3940a
		}
9112ac
9112ac
		/* PE import libraries */
9112ac
		if (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE) {
ff4b97
			/* libfoo.x.lib.a */
9112ac
			if (slbt_exec_link_create_import_library(
9112ac
					dctx,ectx,
ff4b97
					ectx->pimpfilename,
9112ac
					ectx->deffilename,
c7981c
					soname))
9c9f28
				return SLBT_NESTED_ERROR(dctx);
9112ac
ff4b97
			/* symlink: libfoo.lib.a --> libfoo.x.lib.a */
ff4b97
			if (slbt_create_symlink(
9112ac
					dctx,ectx,
9112ac
					ectx->pimpfilename,
ff4b97
					ectx->dimpfilename,
cc0827
					SLBT_SYMLINK_DEFAULT))
9c9f28
				return SLBT_NESTED_ERROR(dctx);
9112ac
9112ac
			/* libfoo.x.y.z.lib.a */
9112ac
			if (slbt_exec_link_create_import_library(
9112ac
					dctx,ectx,
9112ac
					ectx->vimpfilename,
9112ac
					ectx->deffilename,
c7981c
					soxyz))
c7981c
				return SLBT_NESTED_ERROR(dctx);
c7981c
		} else {
c7981c
			if (slbt_create_symlink(
c7981c
					dctx,ectx,
c7981c
					"/dev/null",
c7981c
					ectx->deffilename,
93e38b
					SLBT_SYMLINK_LITERAL))
9c9f28
				return SLBT_NESTED_ERROR(dctx);
9112ac
		}
b3940a
	}
b3940a
f6ccbe
	/* executable */
a02c0e
	if (!dctx->cctx->libname) {
f6ccbe
		/* linking: .libs/exefilename */
f6ccbe
		if (slbt_exec_link_create_executable(
f6ccbe
				dctx,ectx,
f6ccbe
				ectx->exefilename)) {
2e30eb
			slbt_ectx_free_exec_ctx(ectx);
9c9f28
			return SLBT_NESTED_ERROR(dctx);
f6ccbe
		}
f6ccbe
	}
f6ccbe
2bd749
	/* no wrapper? */
5cc3b3
	if (!dot || strcmp(dot,".la")) {
2e30eb
		slbt_ectx_free_exec_ctx(ectx);
2bd749
		return 0;
2bd749
	}
2bd749
a9cfe4
	/* library wrapper */
a9cfe4
	if (slbt_create_library_wrapper(
a9cfe4
			dctx,ectx,
a9cfe4
			arname,soname,soxyz,solnk)) {
2e30eb
		slbt_ectx_free_exec_ctx(ectx);
9c9f28
		return SLBT_NESTED_ERROR(dctx);
2bd749
	}
2bd749
4c76f7
	/* wrapper symlink */
9c9f28
	if ((ret = slbt_create_symlink(
a9cfe4
			dctx,ectx,
a9cfe4
			output,
a9cfe4
			ectx->lafilename,
cc0827
			SLBT_SYMLINK_WRAPPER)))
9c9f28
		SLBT_NESTED_ERROR(dctx);
4c76f7
26ea30
	/* .lai wrapper symlink */
9f995b
	if ((ret == 0) && dctx->cctx->rpath)
9c9f28
		if ((ret = slbt_create_symlink(
26ea30
				dctx,ectx,
26ea30
				output,
26ea30
				ectx->laifilename,
cc0827
				SLBT_SYMLINK_WRAPPER)))
9c9f28
			SLBT_NESTED_ERROR(dctx);
26ea30
2bd749
	/* all done */
2e30eb
	slbt_ectx_free_exec_ctx(ectx);
2bd749
4469ed
	return ret;
2bd749
}