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c4b07e |
/*******************************************************************/
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c4b07e |
/* slibtool: a skinny libtool implementation, written in C */
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c4b07e |
/* Copyright (C) 2016--2021 SysDeer Technologies, LLC */
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c4b07e |
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
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c4b07e |
/*******************************************************************/
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c4b07e |
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c4b07e |
#include <stdlib.h>
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c4b07e |
#include <stdio.h>
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c4b07e |
#include <string.h>
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c4b07e |
#include <fcntl.h>
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c4b07e |
#include <errno.h>
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c4b07e |
#include <sys/stat.h>
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c4b07e |
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c4b07e |
#include <slibtool/slibtool.h>
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c4b07e |
#include "slibtool_driver_impl.h"
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c4b07e |
#include "slibtool_errinfo_impl.h"
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c4b07e |
#include "slibtool_linkcmd_impl.h"
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c4b07e |
#include "slibtool_mapfile_impl.h"
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#include "slibtool_metafile_impl.h"
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#include "slibtool_snprintf_impl.h"
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c4b07e |
#include "slibtool_symlink_impl.h"
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c4b07e |
#include "slibtool_spawn_impl.h"
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c4b07e |
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c4b07e |
static int slbt_linkcmd_exit(
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struct slbt_deps_meta * depsmeta,
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c4b07e |
int ret)
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c4b07e |
{
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c4b07e |
if (depsmeta->altv)
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c4b07e |
free(depsmeta->altv);
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c4b07e |
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c4b07e |
if (depsmeta->args)
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free(depsmeta->args);
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c4b07e |
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return ret;
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}
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static int slbt_exec_link_remove_file(
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c4b07e |
const struct slbt_driver_ctx * dctx,
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struct slbt_exec_ctx * ectx,
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const char * target)
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{
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int fdcwd;
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(void)ectx;
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/* fdcwd */
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fdcwd = slbt_driver_fdcwd(dctx);
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c4b07e |
/* remove target (if any) */
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c4b07e |
if (!unlinkat(fdcwd,target,0) || (errno == ENOENT))
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return 0;
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c4b07e |
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return SLBT_SYSTEM_ERROR(dctx,0);
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}
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c4b07e |
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int slbt_exec_link_create_library(
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const struct slbt_driver_ctx * dctx,
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struct slbt_exec_ctx * ectx,
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const char * dsobasename,
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c4b07e |
const char * dsofilename,
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const char * relfilename)
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{
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int fdcwd;
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c4b07e |
char ** parg;
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c4b07e |
char ** xarg;
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char * ccwrap;
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c4b07e |
const char * laout;
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const char * dot;
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c4b07e |
char cwd [PATH_MAX];
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char output [PATH_MAX];
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c4b07e |
char soname [PATH_MAX];
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char symfile[PATH_MAX];
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struct slbt_deps_meta depsmeta = {0,0,0,0};
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/* initial state */
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slbt_reset_arguments(ectx);
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/* placeholders */
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slbt_reset_placeholders(ectx);
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/* fdcwd */
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fdcwd = slbt_driver_fdcwd(dctx);
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/* input argument adjustment */
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for (parg=ectx->cargv; *parg; parg++)
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slbt_adjust_object_argument(*parg,true,false,fdcwd);
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/* .deps */
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if (slbt_exec_link_create_dep_file(
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dctx,ectx,ectx->cargv,
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dsofilename,false))
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return slbt_linkcmd_exit(
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&depsmeta,
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SLBT_NESTED_ERROR(dctx));
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c4b07e |
/* linker argument adjustment */
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for (parg=ectx->cargv, xarg=ectx->xargv; *parg; parg++, xarg++)
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c4b07e |
if (slbt_adjust_linker_argument(
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dctx,
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*parg,xarg,true,
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dctx->cctx->settings.dsosuffix,
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dctx->cctx->settings.arsuffix,
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&depsmeta) < 0)
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return SLBT_NESTED_ERROR(dctx);
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c4b07e |
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c4b07e |
/* --no-undefined */
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if (dctx->cctx->drvflags & SLBT_DRIVER_NO_UNDEFINED)
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*ectx->noundef = "-Wl,--no-undefined";
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/* -soname */
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dot = strrchr(dctx->cctx->output,'.');
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laout = (dot && !strcmp(dot,".la"))
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? dctx->cctx->output
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: 0;
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if ((dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_MACHO)) {
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(void)0;
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} else if (!laout && (dctx->cctx->drvflags & SLBT_DRIVER_MODULE)) {
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if (slbt_snprintf(soname,sizeof(soname),
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"-Wl,%s",dctx->cctx->output) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->soname = "-Wl,-soname";
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*ectx->lsoname = soname;
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} else if (relfilename && dctx->cctx->verinfo.verinfo) {
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if (slbt_snprintf(soname,sizeof(soname),
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"-Wl,%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->settings.osdsuffix,
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dctx->cctx->verinfo.major,
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dctx->cctx->settings.osdfussix) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->soname = "-Wl,-soname";
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*ectx->lsoname = soname;
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} else if (relfilename) {
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if (slbt_snprintf(soname,sizeof(soname),
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"-Wl,%s%s-%s%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->settings.dsosuffix) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->soname = "-Wl,-soname";
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*ectx->lsoname = soname;
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} else if (dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION) {
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if (slbt_snprintf(soname,sizeof(soname),
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"-Wl,%s%s%s",
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ectx->sonameprefix,
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dctx->cctx->libname,
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dctx->cctx->settings.dsosuffix) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->soname = "-Wl,-soname";
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*ectx->lsoname = soname;
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} else {
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if (slbt_snprintf(soname,sizeof(soname),
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"-Wl,%s%s%s.%d%s",
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ectx->sonameprefix,
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dctx->cctx->libname,
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dctx->cctx->settings.osdsuffix,
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dctx->cctx->verinfo.major,
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dctx->cctx->settings.osdfussix) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->soname = "-Wl,-soname";
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*ectx->lsoname = soname;
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}
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/* PE: --output-def */
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if (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE) {
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if (slbt_snprintf(symfile,sizeof(symfile),
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"-Wl,%s",
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ectx->deffilename) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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*ectx->symdefs = "-Wl,--output-def";
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*ectx->symfile = symfile;
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}
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/* shared/static */
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if (dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC) {
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*ectx->dpic = "-static";
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} else if (dctx->cctx->settings.picswitch) {
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*ectx->dpic = "-shared";
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*ectx->fpic = dctx->cctx->settings.picswitch;
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} else {
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*ectx->dpic = "-shared";
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}
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/* output */
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if (!laout && dctx->cctx->drvflags & SLBT_DRIVER_MODULE) {
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strcpy(output,dctx->cctx->output);
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} else if (relfilename) {
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strcpy(output,relfilename);
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} else if (dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION) {
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strcpy(output,dsofilename);
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} else {
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if (slbt_snprintf(output,sizeof(output),
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"%s%s.%d.%d.%d%s",
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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) < 0)
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return SLBT_BUFFER_ERROR(dctx);
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}
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*ectx->lout[0] = "-o";
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*ectx->lout[1] = output;
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/* ldrpath */
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if (dctx->cctx->host.ldrpath) {
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if (slbt_exec_link_remove_file(dctx,ectx,ectx->rpathfilename))
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return SLBT_NESTED_ERROR(dctx);
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if (slbt_create_symlink(
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dctx,ectx,
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dctx->cctx->host.ldrpath,
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ectx->rpathfilename,
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SLBT_SYMLINK_LITERAL))
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return SLBT_NESTED_ERROR(dctx);
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}
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/* cwd */
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if (slbt_realpath(fdcwd,".",O_DIRECTORY,cwd,sizeof(cwd)))
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return SLBT_SYSTEM_ERROR(dctx,0);
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c4b07e |
/* .libs/libfoo.so --> -L.libs -lfoo */
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if (slbt_exec_link_adjust_argument_vector(
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dctx,ectx,&depsmeta,cwd,true))
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return SLBT_NESTED_ERROR(dctx);
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/* using alternate argument vector */
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ccwrap = (char *)dctx->cctx->ccwrap;
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ectx->argv = depsmeta.altv;
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ectx->program = ccwrap ? ccwrap : depsmeta.altv[0];
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/* sigh */
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if (slbt_exec_link_finalize_argument_vector(dctx,ectx))
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return SLBT_NESTED_ERROR(dctx);
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c4b07e |
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/* step output */
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if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
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c4b07e |
if (slbt_output_link(dctx,ectx))
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return slbt_linkcmd_exit(
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&depsmeta,
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SLBT_NESTED_ERROR(dctx));
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c4b07e |
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c4b07e |
/* spawn */
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c4b07e |
if ((slbt_spawn(ectx,true) < 0) && (ectx->pid < 0)) {
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c4b07e |
return slbt_linkcmd_exit(
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c4b07e |
&depsmeta,
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SLBT_SPAWN_ERROR(dctx));
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c4b07e |
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c4b07e |
} else if (ectx->exitcode) {
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c4b07e |
return slbt_linkcmd_exit(
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c4b07e |
&depsmeta,
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c4b07e |
SLBT_CUSTOM_ERROR(
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dctx,
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c4b07e |
SLBT_ERR_LINK_ERROR));
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c4b07e |
}
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c4b07e |
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c4b07e |
return slbt_linkcmd_exit(&depsmeta,0);
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c4b07e |
}
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