/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016--2017 Z. Gilboa */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <slibtool/slibtool.h>
#include "slibtool_spawn_impl.h"
#include "slibtool_mkdir_impl.h"
#include "slibtool_errinfo_impl.h"
#include "slibtool_metafile_impl.h"
#include "slibtool_readlink_impl.h"
#include "slibtool_symlink_impl.h"
struct slbt_deps_meta {
char ** altv;
char * args;
int depscnt;
int infolen;
};
/*******************************************************************/
/* */
/* -o <ltlib> switches input result */
/* ---------- --------------------- ----- ------ */
/* libfoo.a [-shared|-static] bar.lo libfoo.a */
/* */
/* ar crs libfoo.a bar.o */
/* */
/*******************************************************************/
/*******************************************************************/
/* */
/* -o <ltlib> switches input result */
/* ---------- --------------------- ----- ------ */
/* libfoo.la -shared bar.lo libfoo.la */
/* .libs/libfoo.a */
/* .libs/libfoo.la (lnk) */
/* */
/* ar crs .libs/libfoo.a .libs/bar.o */
/* (generate libfoo.la) */
/* ln -s ../libfoo.la .libs/libfoo.la */
/* */
/*******************************************************************/
/*******************************************************************/
/* */
/* -o <ltlib> switches input result */
/* ---------- --------------------- ----- ------ */
/* libfoo.la -static bar.lo libfoo.la */
/* .libs/libfoo.a */
/* .libs/libfoo.la (lnk) */
/* */
/* ar crs .libs/libfoo.a bar.o */
/* (generate libfoo.la) */
/* ln -s ../libfoo.la .libs/libfoo.la */
/* */
/*******************************************************************/
static int slbt_exec_link_exit(
struct slbt_deps_meta * depsmeta,
int ret)
{
if (depsmeta->altv)
free(depsmeta->altv);
if (depsmeta->args)
free(depsmeta->args);
return ret;
}
static int slbt_get_deps_meta(
const struct slbt_driver_ctx * dctx,
char * libfilename,
struct slbt_deps_meta * depsmeta)
{
int ret;
FILE * fdeps;
struct stat st;
char * deplib;
char depfile[4*PATH_MAX];
char * deplibs = depfile;
char * base;
size_t libexlen;
(void)dctx;
/* -rpath */
if ((size_t)snprintf(depfile,sizeof(depfile),"%s.slibtool.rpath",
libfilename)
>= sizeof(depfile))
return SLBT_BUFFER_ERROR(dctx);
if (!(lstat(depfile,&st))) {
/* -Wl,%s */
depsmeta->infolen += st.st_size + 4;
depsmeta->infolen++;
}
/* .deps */
if ((size_t)snprintf(depfile,sizeof(depfile),"%s.slibtool.deps",
libfilename)
>= sizeof(depfile))
return SLBT_BUFFER_ERROR(dctx);
if ((stat(depfile,&st)))
return SLBT_SYSTEM_ERROR(dctx);
if (!(fdeps = fopen(depfile,"r")))
return SLBT_SYSTEM_ERROR(dctx);
if ((size_t)st.st_size >= sizeof(depfile))
if (!(deplibs = malloc(st.st_size+1))) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
depsmeta->infolen += st.st_size;
depsmeta->infolen++;
deplib = st.st_size
? fgets(deplibs,st.st_size+1,fdeps)
: 0;
if ((base = strrchr(libfilename,'/')))
libexlen = strlen(depfile) + base - libfilename + 2;
else
libexlen = strlen(depfile) + 2;
for (; deplib; ) {
depsmeta->infolen += libexlen;
depsmeta->depscnt++;
deplib = fgets(deplibs,st.st_size+1,fdeps);
}
if (deplibs != depfile)
free(deplibs);
ret = ferror(fdeps) ? SLBT_FILE_ERROR(dctx) : 0;
fclose(fdeps);
return ret;
}
static bool slbt_adjust_input_argument(
char * arg,
const char * osuffix,
const char * asuffix,
bool fpic)
{
char * slash;
char * dot;
char base[PATH_MAX];
if (*arg == '-')
return false;
if (!(dot = strrchr(arg,'.')))
return false;
if (strcmp(dot,osuffix))
return false;
if (fpic) {
if ((slash = strrchr(arg,'/')))
slash++;
else
slash = arg;
if ((size_t)snprintf(base,sizeof(base),"%s",
slash) >= sizeof(base))
return false;
sprintf(slash,".libs/%s",base);
dot = strrchr(arg,'.');
}
strcpy(dot,asuffix);
return true;
}
static int slbt_adjust_linker_argument(
const struct slbt_driver_ctx * dctx,
char * arg,
bool fpic,
const char * dsosuffix,
const char * arsuffix,
struct slbt_deps_meta * depsmeta)
{
int fdlib;
char * slash;
char * dot;
char base[PATH_MAX];
char slnk[PATH_MAX];
if (*arg == '-')
return 0;
if (!(dot = strrchr(arg,'.')))
return 0;
if (strcmp(dot,".la"))
return 0;
if (fpic) {
if ((slash = strrchr(arg,'/')))
slash++;
else
slash = arg;
if ((size_t)snprintf(base,sizeof(base),"%s",
slash) >= sizeof(base))
return 0;
sprintf(slash,".libs/%s",base);
dot = strrchr(arg,'.');
}
/* shared library dependency? */
if (fpic) {
sprintf(dot,"%s",dsosuffix);
if (!slbt_readlink(arg,slnk,sizeof(slnk))
&& !(strcmp(slnk,"/dev/null")))
sprintf(dot,"%s",arsuffix);
else if ((fdlib = open(arg,O_RDONLY)) >= 0)
close(fdlib);
else
sprintf(dot,"%s",arsuffix);
return slbt_get_deps_meta(dctx,arg,depsmeta);
}
/* input archive */
sprintf(dot,"%s",arsuffix);
return 0;
}
static int slbt_exec_link_adjust_argument_vector(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
struct slbt_deps_meta * depsmeta,
const char * cwd,
bool flibrary)
{
char ** carg;
char ** aarg;
char * ldir;
char * slash;
char * mark;
char * darg;
char * dot;
char * dep;
char * base;
FILE * fdeps;
char * dpath;
bool freqd;
int argc;
char arg[PATH_MAX];
char lib[PATH_MAX];
char depdir [PATH_MAX];
char rpathdir[PATH_MAX];
char rpathlnk[PATH_MAX];
bool fwholearchive = false;
struct stat st;
int fd;
for (argc=0,carg=ectx->cargv; *carg; carg++)
argc++;
if (!(depsmeta->args = calloc(1,depsmeta->infolen)))
return SLBT_SYSTEM_ERROR(dctx);
argc *= 3;
argc += depsmeta->depscnt;
if (!(depsmeta->altv = calloc(argc,sizeof(char *))))
return SLBT_SYSTEM_ERROR(dctx);
carg = ectx->cargv;
aarg = depsmeta->altv;
darg = depsmeta->args;
for (; *carg; ) {
dpath = 0;
freqd = false;
if (!strcmp(*carg,"-Wl,--whole-archive"))
fwholearchive = true;
else if (!strcmp(*carg,"-Wl,--no-whole-archive"))
fwholearchive = false;
/* output annotation */
if (carg == ectx->lout[0]) {
ectx->mout[0] = &aarg[0];
ectx->mout[1] = &aarg[1];
}
/* argument translation */
mark = *carg;
if ((mark[0] == '-') && (mark[1] == 'L')) {
if (mark[2]) {
ldir = &mark[2];
} else {
*aarg++ = *carg++;
ldir = *carg;
}
mark = ldir + strlen(ldir);
if (mark[-1] == '/')
strcpy(mark,".libs");
else
strcpy(mark,"/.libs");
if ((fd = open(ldir,O_DIRECTORY,0)) < 0)
*mark = 0;
else
close(fd);
*aarg++ = *carg++;
} else if (**carg == '-') {
*aarg++ = *carg++;
} else if (!(dot = strrchr(*carg,'.'))) {
*aarg++ = *carg++;
} else if (!(strcmp(dot,".a"))) {
if (flibrary && !fwholearchive)
*aarg++ = "-Wl,--whole-archive";
dpath = lib;
sprintf(lib,"%s.slibtool.deps",*carg);
*aarg++ = *carg++;
if (flibrary && !fwholearchive)
*aarg++ = "-Wl,--no-whole-archive";
} else if (strcmp(dot,dctx->cctx->settings.dsosuffix)) {
*aarg++ = *carg++;
} else if (carg == ectx->lout[1]) {
/* ^^^hoppla^^^ */
*aarg++ = *carg++;
} else {
/* -rpath */
sprintf(rpathlnk,"%s.slibtool.rpath",*carg);
if (!(lstat(rpathlnk,&st))) {
if (slbt_readlink(
rpathlnk,\
rpathdir,
sizeof(rpathdir)))
return SLBT_SYSTEM_ERROR(dctx);
sprintf(darg,"-Wl,%s",rpathdir);
*aarg++ = "-Wl,-rpath";
*aarg++ = darg;
darg += strlen(darg);
darg++;
}
dpath = lib;
freqd = true;
sprintf(lib,"%s.slibtool.deps",*carg);
/* account for {'-','L','-','l'} */
if ((size_t)snprintf(arg,sizeof(arg),"%s",
*carg) >= (sizeof(arg) - 4))
return SLBT_BUFFER_ERROR(dctx);
if ((slash = strrchr(arg,'/'))) {
sprintf(*carg,"-L%s",arg);
mark = strrchr(*carg,'/');
*mark = 0;
if (ectx->fwrapper) {
*slash = 0;
if (fprintf(ectx->fwrapper,
"DL_PATH=\"$DL_PATH$COLON%s/%s\"\n"
"COLON=':'\n\n",
cwd,arg) < 0)
return SLBT_SYSTEM_ERROR(dctx);
}
*aarg++ = *carg++;
*aarg++ = ++mark;
++slash;
slash += strlen(dctx->cctx->settings.dsoprefix);
sprintf(mark,"-l%s",slash);
dot = strrchr(mark,'.');
*dot = 0;
} else {
*aarg++ = *carg++;
}
}
if (dpath) {
if (!stat(dpath,&st) && (fdeps = fopen(dpath,"r"))) {
dep = st.st_size
? fgets(darg,st.st_size+1,fdeps)
: 0;
if (!(strncmp(lib,".libs/",6))) {
*aarg++ = "-L.libs";
lib[1] = 0;
} else if ((base = strrchr(lib,'/'))) {
if (base - lib == 5) {
if (!(strncmp(&base[-5],".libs/",6)))
base -= 4;
} else if (base - lib >= 6) {
if (!(strncmp(&base[-6],"/.libs/",7)))
base -= 6;
}
*base = 0;
} else {
lib[0] = '.';
lib[1] = 0;
}
for (; dep; ) {
*aarg++ = darg;
mark = darg;
darg += strlen(dep);
if (darg[-1] == '\n')
darg[-1] = 0;
else
darg++;
/* handle -L... as needed */
if ((mark[0] == '-')
&& (mark[1] == 'L')
&& (mark[2] != '/')) {
if (strlen(mark) >= sizeof(depdir) - 1)
return SLBT_BUFFER_ERROR(dctx);
darg = mark;
strcpy(depdir,&mark[2]);
sprintf(darg,"-L%s/%s",lib,depdir);
darg += strlen(darg);
darg++;
}
dep = fgets(darg,st.st_size+1,fdeps);
}
if (ferror(fdeps)) {
free(depsmeta->altv);
free(depsmeta->args);
fclose(fdeps);
return SLBT_FILE_ERROR(dctx);
} else {
fclose(fdeps);
}
} else if (freqd) {
free(depsmeta->altv);
free(depsmeta->args);
return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_LINK_FREQ);
}
}
}
return 0;
}
static int slbt_exec_link_remove_file(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * target)
{
(void)ectx;
/* remove target (if any) */
if (!(unlink(target)) || (errno == ENOENT))
return 0;
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
strerror(errno);
return -1;
}
static int slbt_exec_link_create_dep_file(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
char ** altv,
const char * libfilename,
bool farchive)
{
char ** parg;
char * popt;
char * plib;
char * mark;
char * base;
size_t size;
FILE * fdeps;
char * deplib;
char reladir[PATH_MAX];
char deplibs[PATH_MAX];
char depfile[PATH_MAX];
struct stat st;
int ldepth;
int fdyndep;
(void)dctx;
if (ectx->fdeps)
fclose(ectx->fdeps);
if ((size_t)snprintf(depfile,sizeof(depfile),"%s.slibtool.deps",
libfilename)
>= sizeof(depfile))
return SLBT_BUFFER_ERROR(dctx);
if (!(ectx->fdeps = fopen(depfile,"w")))
return SLBT_SYSTEM_ERROR(dctx);
for (parg=altv; *parg; parg++) {
popt = 0;
plib = 0;
if (!strcmp(*parg,"-l")) {
popt = *parg++;
plib = *parg;
} else if (!strcmp(*parg,"--library")) {
popt = *parg++;
plib = *parg;
} else if (!strncmp(*parg,"-l",2)) {
popt = *parg;
plib = popt + 2;
} else if (!strncmp(*parg,"--library=",10)) {
popt = *parg;
plib = popt + 10;
} else if (!strncmp(*parg,"-f",2)) {
(void)0;
} else if ((popt = strrchr(*parg,'.')) && !strcmp(popt,".la")) {
/* import dependency list */
if ((base = strrchr(*parg,'/')))
base++;
else
base = *parg;
/* [relative .la directory] */
if (base > *parg) {
if ((size_t)snprintf(reladir,
sizeof(reladir),
"%s",*parg)
>= sizeof(reladir)) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
reladir[base - *parg - 1] = 0;
} else {
reladir[0] = '.';
reladir[1] = 0;
}
/* dynamic library dependency? */
strcpy(depfile,*parg);
mark = depfile + (base - *parg);
size = sizeof(depfile) - (base - *parg);
if ((size_t)snprintf(mark,size,".libs/%s",base)
>= size)
return SLBT_BUFFER_ERROR(dctx);
mark = strrchr(mark,'.');
strcpy(mark,dctx->cctx->settings.dsosuffix);
fdyndep = !stat(depfile,&st);
/* [-L... as needed] */
if (fdyndep && (base > *parg) && (ectx->ldirdepth >= 0)) {
if (fputs("-L",ectx->fdeps) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
for (ldepth=ectx->ldirdepth; ldepth; ldepth--)
if (fputs("../",ectx->fdeps) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
if (fprintf(ectx->fdeps,"%s/.libs\n",reladir) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
}
/* -ldeplib */
if (fdyndep) {
*popt = 0;
mark = base;
mark += strlen(dctx->cctx->settings.dsoprefix);
if (fprintf(ectx->fdeps,"-l%s\n",mark) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
*popt = '.';
}
/* [open dependency list] */
strcpy(depfile,*parg);
mark = depfile + (base - *parg);
size = sizeof(depfile) - (base - *parg);
if ((size_t)snprintf(mark,size,".libs/%s",base)
>= size)
return SLBT_BUFFER_ERROR(dctx);
mark = strrchr(mark,'.');
size = sizeof(depfile) - (mark - depfile);
if (!farchive) {
if ((size_t)snprintf(
mark,size,
"%s.slibtool.deps",
dctx->cctx->settings.dsosuffix)
>= size)
return SLBT_BUFFER_ERROR(dctx);
if (stat(depfile,&st)) {
if (errno == ENOENT)
fdeps = 0;
else
return SLBT_SYSTEM_ERROR(dctx);
} else {
if (!(fdeps = fopen(depfile,"r")))
return SLBT_SYSTEM_ERROR(dctx);
}
}
if (farchive || !fdeps) {
if ((size_t)snprintf(mark,size,".a.slibtool.deps")
>= size)
return SLBT_BUFFER_ERROR(dctx);
if (stat(depfile,&st))
return SLBT_SYSTEM_ERROR(dctx);
if (!(fdeps = fopen(depfile,"r")))
return SLBT_SYSTEM_ERROR(dctx);
}
/* [-l... as needed] */
deplib = st.st_size
? fgets(deplibs,st.st_size+1,fdeps)
: 0;
for (; deplib; ) {
if ((deplib[0] == '-') && (deplib[1] == 'L')
&& (deplib[2] != '/')) {
if (fprintf(ectx->fdeps,"-L%s/%s",
reladir,&deplib[2]) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
} else {
if (fprintf(ectx->fdeps,"%s",deplib) < 0) {
fclose(fdeps);
return SLBT_SYSTEM_ERROR(dctx);
}
}
deplib = fgets(deplibs,st.st_size+1,fdeps);
}
fclose(fdeps);
}
if (plib)
if (fprintf(ectx->fdeps,"-l%s\n",plib) < 0)
return SLBT_SYSTEM_ERROR(dctx);
}
if (fflush(ectx->fdeps))
return SLBT_SYSTEM_ERROR(dctx);
return 0;
}
static int slbt_exec_link_create_import_library(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
char * impfilename,
char * deffilename,
char * soname,
bool ftag)
{
char * slash;
char * dlltool[8];
char program[PATH_MAX];
char hosttag[PATH_MAX];
char hostlnk[PATH_MAX];
/* libfoo.so.def.{flavor} */
if (ftag) {
if ((size_t)snprintf(hosttag,sizeof(hosttag),"%s.%s",
deffilename,
dctx->cctx->host.flavor) >= sizeof(hosttag))
return SLBT_BUFFER_ERROR(dctx);
if ((size_t)snprintf(hostlnk,sizeof(hostlnk),"%s.host",
deffilename) >= sizeof(hostlnk))
return SLBT_BUFFER_ERROR(dctx);
/* libfoo.so.def is under .libs/ */
if (!(slash = strrchr(deffilename,'/')))
return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_LINK_FLOW);
if (slbt_create_symlink(
dctx,ectx,
deffilename,
hosttag,
false))
return SLBT_NESTED_ERROR(dctx);
/* libfoo.so.def.{flavor} is under .libs/ */
if (!(slash = strrchr(hosttag,'/')))
return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_LINK_FLOW);
if (slbt_create_symlink(
dctx,ectx,
++slash,
hostlnk,
false))
return SLBT_NESTED_ERROR(dctx);
}
/* dlltool argv */
if ((size_t)snprintf(program,sizeof(program),"%s",
dctx->cctx->host.dlltool) >= sizeof(program))
return SLBT_BUFFER_ERROR(dctx);
dlltool[0] = program;
dlltool[1] = "-l";
dlltool[2] = impfilename;
dlltool[3] = "-d";
dlltool[4] = deffilename;
dlltool[5] = "-D";
dlltool[6] = soname;
dlltool[7] = 0;
/* alternate argument vector */
ectx->argv = dlltool;
ectx->program = program;
/* step output */
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
if (slbt_output_link(dctx,ectx))
return SLBT_NESTED_ERROR(dctx);
/* dlltool spawn */
if ((slbt_spawn(ectx,true) < 0) || ectx->exitcode)
return SLBT_SPAWN_ERROR(dctx);
return 0;
}
static int slbt_exec_link_create_noop_symlink(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * arfilename)
{
struct stat st;
/* file exists? */
if (!(lstat(arfilename,&st)))
return 0;
/* needed? */
if (errno == ENOENT) {
if (slbt_create_symlink(
dctx,ectx,
"/dev/null",
arfilename,
false))
return SLBT_NESTED_ERROR(dctx);
return 0;
}
return SLBT_SYSTEM_ERROR(dctx);
}
static int slbt_exec_link_create_archive(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * arfilename,
bool fpic,
bool fprimary)
{
char ** aarg;
char ** parg;
char * base;
char * mark;
char * slash;
char program[PATH_MAX];
char output [PATH_MAX];
char arfile [PATH_MAX];
char arlink [PATH_MAX];
/* -disable-static? */
if (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_STATIC)
if (dctx->cctx->rpath)
return slbt_exec_link_create_noop_symlink(
dctx,ectx,arfilename);
/* initial state */
slbt_reset_arguments(ectx);
/* placeholders */
slbt_reset_placeholders(ectx);
/* alternate program (ar, ranlib) */
ectx->program = program;
/* output */
if ((size_t)snprintf(output,sizeof(output),"%s",
arfilename) >= sizeof(output))
return SLBT_BUFFER_ERROR(dctx);
/* ar alternate argument vector */
if ((size_t)snprintf(program,sizeof(program),"%s",
dctx->cctx->host.ar) >= sizeof(program))
return SLBT_BUFFER_ERROR(dctx);
aarg = ectx->altv;
*aarg++ = program;
*aarg++ = "crs";
*aarg++ = output;
/* input argument adjustment */
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_input_argument(*parg,".lo",".o",fpic))
*aarg++ = *parg;
*aarg = 0;
ectx->argv = ectx->altv;
/* step output */
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
if (slbt_output_link(dctx,ectx))
return SLBT_NESTED_ERROR(dctx);
/* remove old archive as needed */
if (slbt_exec_link_remove_file(dctx,ectx,output))
return SLBT_NESTED_ERROR(dctx);
/* .deps */
if (slbt_exec_link_create_dep_file(
dctx,ectx,ectx->cargv,
arfilename,true))
return SLBT_NESTED_ERROR(dctx);
/* ar spawn */
if ((slbt_spawn(ectx,true) < 0) || ectx->exitcode)
return SLBT_SPAWN_ERROR(dctx);
/* input objects associated with .la archives */
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_input_argument(*parg,".la",".a",true))
if (slbt_archive_import(dctx,ectx,output,*parg))
return SLBT_NESTED_ERROR(dctx);
if (fprimary && (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_SHARED)) {
strcpy(arlink,output);
mark = strrchr(arlink,'/');
*mark = 0;
base = output + (mark - arlink);
base++;
if ((slash = strrchr(arlink,'/')))
slash++;
else
slash = arlink;
strcpy(slash,base);
sprintf(arfile,".libs/%s",base);
if (slbt_exec_link_remove_file(dctx,ectx,arlink))
return SLBT_NESTED_ERROR(dctx);
if (symlink(arfile,arlink))
return SLBT_SYSTEM_ERROR(dctx);
}
return 0;
}
static int slbt_exec_link_create_library(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * dsofilename,
const char * relfilename)
{
char ** parg;
char cwd [PATH_MAX];
char output [PATH_MAX];
char soname [PATH_MAX];
char symfile[PATH_MAX];
struct slbt_deps_meta depsmeta = {0,0,0,0};
/* initial state */
slbt_reset_arguments(ectx);
/* placeholders */
slbt_reset_placeholders(ectx);
/* input argument adjustment */
for (parg=ectx->cargv; *parg; parg++)
slbt_adjust_input_argument(*parg,".lo",".o",true);
/* .deps */
if (slbt_exec_link_create_dep_file(
dctx,ectx,ectx->cargv,
dsofilename,false))
return slbt_exec_link_exit(
&depsmeta,
SLBT_NESTED_ERROR(dctx));
/* linker argument adjustment */
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_linker_argument(
dctx,
*parg,true,
dctx->cctx->settings.dsosuffix,
dctx->cctx->settings.arsuffix,
&depsmeta) < 0)
return SLBT_NESTED_ERROR(dctx);
/* --no-undefined */
if (dctx->cctx->drvflags & SLBT_DRIVER_NO_UNDEFINED)
*ectx->noundef = "-Wl,--no-undefined";
/* -soname */
if ((dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_MACHO)) {
(void)0;
} else if (!(dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION)) {
if ((size_t)snprintf(soname,sizeof(soname),"-Wl,%s%s%s.%d",
ectx->sonameprefix,
dctx->cctx->libname,
dctx->cctx->settings.dsosuffix,
dctx->cctx->verinfo.major)
>= sizeof(soname))
return SLBT_BUFFER_ERROR(dctx);
*ectx->soname = "-Wl,-soname";
*ectx->lsoname = soname;
} else if (relfilename) {
if ((size_t)snprintf(soname,sizeof(soname),"-Wl,%s%s-%s%s",
ectx->sonameprefix,
dctx->cctx->libname,
dctx->cctx->release,
dctx->cctx->settings.dsosuffix)
>= sizeof(soname))
return SLBT_BUFFER_ERROR(dctx);
*ectx->soname = "-Wl,-soname";
*ectx->lsoname = soname;
}
/* PE: --output-def */
if (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE) {
if ((size_t)snprintf(symfile,sizeof(symfile),"-Wl,%s",
ectx->deffilename)
>= sizeof(output))
return SLBT_BUFFER_ERROR(dctx);
*ectx->symdefs = "-Wl,--output-def";
*ectx->symfile = symfile;
}
/* shared/static */
if (dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC) {
*ectx->dpic = "-static";
} else {
*ectx->dpic = "-shared";
*ectx->fpic = "-fPIC";
}
/* output */
if (relfilename) {
strcpy(output,relfilename);
} else if (dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION) {
strcpy(output,dsofilename);
} else {
if ((size_t)snprintf(output,sizeof(output),"%s.%d.%d.%d",
dsofilename,
dctx->cctx->verinfo.major,
dctx->cctx->verinfo.minor,
dctx->cctx->verinfo.revision)
>= sizeof(output))
return SLBT_BUFFER_ERROR(dctx);
}
*ectx->lout[0] = "-o";
*ectx->lout[1] = output;
/* ldrpath */
if (dctx->cctx->host.ldrpath) {
if (slbt_exec_link_remove_file(dctx,ectx,ectx->rpathfilename))
return SLBT_NESTED_ERROR(dctx);
if (symlink(dctx->cctx->host.ldrpath,ectx->rpathfilename))
return SLBT_SYSTEM_ERROR(dctx);
}
/* cwd */
if (!getcwd(cwd,sizeof(cwd)))
return SLBT_SYSTEM_ERROR(dctx);
/* .libs/libfoo.so --> -L.libs -lfoo */
if (slbt_exec_link_adjust_argument_vector(
dctx,ectx,&depsmeta,cwd,true))
return SLBT_NESTED_ERROR(dctx);
/* using alternate argument vector */
ectx->argv = depsmeta.altv;
ectx->program = depsmeta.altv[0];
/* step output */
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
if (slbt_output_link(dctx,ectx))
return slbt_exec_link_exit(
&depsmeta,
SLBT_NESTED_ERROR(dctx));
/* spawn */
if ((slbt_spawn(ectx,true) < 0) || ectx->exitcode)
return slbt_exec_link_exit(
&depsmeta,
SLBT_SPAWN_ERROR(dctx));
return slbt_exec_link_exit(&depsmeta,0);
}
static int slbt_exec_link_create_executable(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * exefilename)
{
char ** parg;
char * base;
char cwd [PATH_MAX];
char output [PATH_MAX];
char wrapper[PATH_MAX];
char wraplnk[PATH_MAX];
bool fabspath;
bool fpic;
const struct slbt_source_version * verinfo;
struct slbt_deps_meta depsmeta = {0,0,0,0};
/* initial state */
slbt_reset_arguments(ectx);
/* placeholders */
slbt_reset_placeholders(ectx);
/* fpic */
fpic = !(dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC);
/* input argument adjustment */
for (parg=ectx->cargv; *parg; parg++)
slbt_adjust_input_argument(*parg,".lo",".o",fpic);
/* linker argument adjustment */
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_linker_argument(
dctx,
*parg,true,
dctx->cctx->settings.dsosuffix,
dctx->cctx->settings.arsuffix,
&depsmeta) < 0)
return SLBT_NESTED_ERROR(dctx);
/* --no-undefined */
if (dctx->cctx->drvflags & SLBT_DRIVER_NO_UNDEFINED)
*ectx->noundef = "-Wl,--no-undefined";
/* executable wrapper: header */
if ((size_t)snprintf(wrapper,sizeof(wrapper),"%s.wrapper.tmp",
dctx->cctx->output)
>= sizeof(wrapper))
return SLBT_BUFFER_ERROR(dctx);
if (!(ectx->fwrapper = fopen(wrapper,"w")))
return SLBT_SYSTEM_ERROR(dctx);
verinfo = slbt_source_version();
if (fprintf(ectx->fwrapper,
"#!/bin/sh\n"
"# libtool compatible executable wrapper\n"
"# Generated by %s (slibtool %d.%d.%d)\n"
"# [commit reference: %s]\n\n"
"if [ -z \"$%s\" ]; then\n"
"\tDL_PATH=\n"
"\tCOLON=\n"
"\tLCOLON=\n"
"else\n"
"\tDL_PATH=\n"
"\tCOLON=\n"
"\tLCOLON=':'\n"
"fi\n\n",
dctx->program,
verinfo->major,verinfo->minor,verinfo->revision,
verinfo->commit,
dctx->cctx->settings.ldpathenv) < 0)
return SLBT_SYSTEM_ERROR(dctx);
/* output */
if ((size_t)snprintf(output,sizeof(output),"%s",
exefilename)
>= sizeof(output))
return SLBT_BUFFER_ERROR(dctx);
*ectx->lout[0] = "-o";
*ectx->lout[1] = output;
/* static? */
if (dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC)
*ectx->dpic = "-static";
/* cwd */
if (!getcwd(cwd,sizeof(cwd)))
return SLBT_SYSTEM_ERROR(dctx);
/* .libs/libfoo.so --> -L.libs -lfoo */
if (slbt_exec_link_adjust_argument_vector(
dctx,ectx,&depsmeta,cwd,false))
return SLBT_NESTED_ERROR(dctx);
/* using alternate argument vector */
ectx->argv = depsmeta.altv;
ectx->program = depsmeta.altv[0];
/* executable wrapper symlink */
if ((size_t)snprintf(wraplnk,sizeof(wraplnk),"%s.exe.wrapper",
dctx->cctx->output) >= sizeof(wraplnk))
return slbt_exec_link_exit(
&depsmeta,
SLBT_BUFFER_ERROR(dctx));
/* executable wrapper: base name */
if ((base = strrchr(wraplnk,'/')))
base++;
else
base = wraplnk;
/* executable wrapper: footer */
fabspath = (exefilename[0] == '/');
if (fprintf(ectx->fwrapper,
"DL_PATH=\"$DL_PATH$LCOLON$%s\"\n\n"
"export %s=$DL_PATH\n\n"
"if [ `basename \"$0\"` = \"%s\" ]; then\n"
"\tprogram=\"$1\"; shift\n"
"\texec \"$program\" \"$@\"\n"
"fi\n\n"
"exec %s/%s \"$@\"\n",
dctx->cctx->settings.ldpathenv,
dctx->cctx->settings.ldpathenv,
base,
fabspath ? "" : cwd,
fabspath ? &exefilename[1] : exefilename) < 0)
return slbt_exec_link_exit(
&depsmeta,
SLBT_SYSTEM_ERROR(dctx));
/* step output */
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
if (slbt_output_link(dctx,ectx))
return slbt_exec_link_exit(
&depsmeta,
SLBT_NESTED_ERROR(dctx));
/* spawn */
if ((slbt_spawn(ectx,true) < 0) || ectx->exitcode)
return slbt_exec_link_exit(
&depsmeta,
SLBT_SPAWN_ERROR(dctx));
/* executable wrapper: finalize */
fclose(ectx->fwrapper);
ectx->fwrapper = 0;
if (slbt_create_symlink(
dctx,ectx,
dctx->cctx->output,wraplnk,
false))
return slbt_exec_link_exit(
&depsmeta,
SLBT_NESTED_ERROR(dctx));
if (rename(wrapper,dctx->cctx->output))
return slbt_exec_link_exit(
&depsmeta,
SLBT_SYSTEM_ERROR(dctx));
if (chmod(dctx->cctx->output,0755))
return slbt_exec_link_exit(
&depsmeta,
SLBT_SYSTEM_ERROR(dctx));
return slbt_exec_link_exit(&depsmeta,0);
}
static int slbt_exec_link_create_library_symlink(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
bool fmajor)
{
char target[PATH_MAX];
char lnkname[PATH_MAX];
if (ectx->relfilename) {
strcpy(target,ectx->relfilename);
sprintf(lnkname,"%s.release",ectx->dsofilename);
if (slbt_create_symlink(
dctx,ectx,
target,lnkname,
false))
return SLBT_NESTED_ERROR(dctx);
} else
sprintf(target,"%s.%d.%d.%d",
ectx->dsofilename,
dctx->cctx->verinfo.major,
dctx->cctx->verinfo.minor,
dctx->cctx->verinfo.revision);
if (fmajor)
sprintf(lnkname,"%s.%d",
ectx->dsofilename,
dctx->cctx->verinfo.major);
else
strcpy(lnkname,ectx->dsofilename);
if (fmajor && (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE))
return slbt_copy_file(
dctx,ectx,
target,lnkname);
else
return slbt_create_symlink(
dctx,ectx,
target,lnkname,
false);
}
int slbt_exec_link(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx)
{
int ret;
const char * output;
char * dot;
struct slbt_exec_ctx * actx;
bool fpic;
bool fstaticonly;
char soname[PATH_MAX];
char soxyz [PATH_MAX];
char solnk [PATH_MAX];
char arname[PATH_MAX];
/* dry run */
if (dctx->cctx->drvflags & SLBT_DRIVER_DRY_RUN)
return 0;
/* context */
if (ectx)
actx = 0;
else if ((ret = slbt_get_exec_ctx(dctx,&ectx)))
return SLBT_NESTED_ERROR(dctx);
else
actx = ectx;
/* libfoo.so.x.y.z */
if ((size_t)snprintf(soxyz,sizeof(soxyz),"%s%s%s.%d.%d.%d",
ectx->sonameprefix,
dctx->cctx->libname,
dctx->cctx->settings.dsosuffix,
dctx->cctx->verinfo.major,
dctx->cctx->verinfo.minor,
dctx->cctx->verinfo.revision)
>= sizeof(soxyz)) {
slbt_free_exec_ctx(actx);
return SLBT_BUFFER_ERROR(dctx);
}
/* libfoo.so.x */
sprintf(soname,"%s%s%s.%d",
ectx->sonameprefix,
dctx->cctx->libname,
dctx->cctx->settings.dsosuffix,
dctx->cctx->verinfo.major);
/* libfoo.so */
sprintf(solnk,"%s%s%s",
ectx->sonameprefix,
dctx->cctx->libname,
dctx->cctx->settings.dsosuffix);
/* libfoo.a */
sprintf(arname,"%s%s%s",
dctx->cctx->settings.arprefix,
dctx->cctx->libname,
dctx->cctx->settings.arsuffix);
/* output suffix */
output = dctx->cctx->output;
dot = strrchr(output,'.');
/* .libs directory */
if (slbt_mkdir(ectx->ldirname)) {
slbt_free_exec_ctx(actx);
return SLBT_SYSTEM_ERROR(dctx);
}
/* non-pic libfoo.a */
if (dot && !strcmp(dot,".a"))
if (slbt_exec_link_create_archive(dctx,ectx,output,false,false)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
/* fpic, fstaticonly */
if (dctx->cctx->drvflags & SLBT_DRIVER_ALL_STATIC) {
fstaticonly = true;
fpic = false;
} else if (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_SHARED) {
fstaticonly = true;
fpic = false;
} else if (dctx->cctx->drvflags & SLBT_DRIVER_SHARED) {
fstaticonly = false;
fpic = true;
} else {
fstaticonly = false;
fpic = false;
}
/* pic libfoo.a */
if (dot && !strcmp(dot,".la"))
if (slbt_exec_link_create_archive(
dctx,ectx,
ectx->arfilename,
fpic,true)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
/* -all-static library */
if (fstaticonly && dctx->cctx->libname)
if (slbt_create_symlink(
dctx,ectx,
"/dev/null",
ectx->dsofilename,
false))
return SLBT_NESTED_ERROR(dctx);
/* dynamic library */
if (dot && !strcmp(dot,".la") && dctx->cctx->rpath && !fstaticonly) {
/* linking: libfoo.so.x.y.z */
if (slbt_exec_link_create_library(
dctx,ectx,
ectx->dsofilename,
ectx->relfilename)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
if (!(dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION)) {
/* symlink: libfoo.so.x --> libfoo.so.x.y.z */
if (slbt_exec_link_create_library_symlink(
dctx,ectx,
true)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
/* symlink: libfoo.so --> libfoo.so.x.y.z */
if (slbt_exec_link_create_library_symlink(
dctx,ectx,
false)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
} else if (ectx->relfilename) {
/* symlink: libfoo.so --> libfoo-x.y.z.so */
if (slbt_exec_link_create_library_symlink(
dctx,ectx,
false)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
}
/* PE import libraries */
if (dctx->cctx->drvflags & SLBT_DRIVER_IMAGE_PE) {
/* libfoo.x.lib.a */
if (slbt_exec_link_create_import_library(
dctx,ectx,
ectx->pimpfilename,
ectx->deffilename,
soname,
true))
return SLBT_NESTED_ERROR(dctx);
/* symlink: libfoo.lib.a --> libfoo.x.lib.a */
if (slbt_create_symlink(
dctx,ectx,
ectx->pimpfilename,
ectx->dimpfilename,
false))
return SLBT_NESTED_ERROR(dctx);
/* libfoo.x.y.z.lib.a */
if (slbt_exec_link_create_import_library(
dctx,ectx,
ectx->vimpfilename,
ectx->deffilename,
soxyz,
false))
return SLBT_NESTED_ERROR(dctx);
}
}
/* executable */
if (!dctx->cctx->libname) {
/* linking: .libs/exefilename */
if (slbt_exec_link_create_executable(
dctx,ectx,
ectx->exefilename)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
}
/* no wrapper? */
if (!dot || strcmp(dot,".la")) {
slbt_free_exec_ctx(actx);
return 0;
}
/* library wrapper */
if (slbt_create_library_wrapper(
dctx,ectx,
arname,soname,soxyz,solnk)) {
slbt_free_exec_ctx(actx);
return SLBT_NESTED_ERROR(dctx);
}
/* wrapper symlink */
if ((ret = slbt_create_symlink(
dctx,ectx,
output,
ectx->lafilename,
true)))
SLBT_NESTED_ERROR(dctx);
/* .lai wrapper symlink */
if (ret == 0)
if ((ret = slbt_create_symlink(
dctx,ectx,
output,
ectx->laifilename,
true)))
SLBT_NESTED_ERROR(dctx);
/* all done */
slbt_free_exec_ctx(actx);
return ret;
}