embryo -> use eina_prefix.

SVN revision: 59487
This commit is contained in:
Carsten Haitzler 2011-05-18 08:33:31 +00:00
parent 42e460e3b6
commit 528b69105f
6 changed files with 24 additions and 433 deletions

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@ -2,3 +2,6 @@
1.0.0 release
2011-05-12 Carsten Haitzler (The Rasterman)
* Make embryo_cc use eina and eina_prefix to determine include location

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@ -106,6 +106,7 @@ case "$host_os" in
esac
AC_SUBST(EFL_EMBRYO_BUILD)
PKG_CHECK_MODULES([EINA], [eina >= 1.0.999])
### Checks for header files

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@ -9,6 +9,7 @@ AM_CPPFLAGS = \
-DPACKAGE_BIN_DIR=\"$(bindir)\" \
-DPACKAGE_LIB_DIR=\"$(libdir)\" \
-DPACKAGE_DATA_DIR=\"$(datadir)/$(PACKAGE)\" \
@EINA_CFLAGS@ \
@EVIL_CFLAGS@
bin_PROGRAMS = @EMBRYO_CC_PRG@
@ -31,7 +32,7 @@ embryo_cc_prefix.c \
embryo_cc_prefix.h
embryo_cc_CFLAGS = @EMBRYO_CFLAGS@
embryo_cc_LDADD = $(top_builddir)/src/lib/libembryo.la @EVIL_LIBS@ -lm
embryo_cc_LDADD = $(top_builddir)/src/lib/libembryo.la @EVIL_LIBS@ @EINA_LIBS@ -lm
embryo_cc_LDFLAGS = @lt_enable_auto_import@
EXTRA_DIST = \

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@ -29,447 +29,58 @@
# include <glob.h>
#endif /* ! HAVE_EVIL */
#ifdef __MacOSX__
# include <mach-o/dyld.h>
#endif
#include <Eina.h>
#include "embryo_cc_prefix.h"
/* local subsystem functions */
static int _e_prefix_share_hunt(void);
static int _e_prefix_fallbacks(void);
static int _e_prefix_try_proc(void);
static int _e_prefix_try_argv(char *argv0);
#ifdef __MacOSX__
static int _e_prefix_try_dyld(void);
#endif
/* local subsystem globals */
static char *_exe_path = NULL;
static char *_prefix_path = NULL;
static char *_prefix_path_bin = NULL;
static char *_prefix_path_data = NULL;
static char *_prefix_path_lib = NULL;
#define E_FREE(p) { if (p) {free(p); p = NULL;} }
/*#define PREFIX_CACHE_FILE 1*/
#define SHARE_D "share/embryo"
#define MAGIC_FILE "include/default.inc"
#define MAGIC_DAT SHARE_D"/"MAGIC_FILE
static Eina_Prefix *pfx = NULL;
/* externally accessible functions */
int
e_prefix_determine(char *argv0)
{
char *p, buf[4096];
struct stat st;
e_prefix_shutdown();
/* if user provides E_PREFIX - then use that or also more specific sub
* dirs for bin, lib, data and locale */
if (getenv("EMBRYO_PREFIX"))
{
_prefix_path = strdup(getenv("EMBRYO_PREFIX"));
if (getenv("EMBRYO_BIN_DIR"))
snprintf(buf, sizeof(buf), "%s/bin", getenv("EMBRYO_BIN_DIR"));
else
snprintf(buf, sizeof(buf), "%s/bin", _prefix_path);
_prefix_path_bin = strdup(buf);
if (getenv("EMBRYO_LIB_DIR"))
snprintf(buf, sizeof(buf), "%s/lib", getenv("EMBRYO_LIB_DIR"));
else
snprintf(buf, sizeof(buf), "%s/lib", _prefix_path);
_prefix_path_lib = strdup(buf);
if (getenv("EMBRYO_DATA_DIR"))
snprintf(buf, sizeof(buf), "%s/"SHARE_D, getenv("EMBRYO_DATA_DIR"));
else
snprintf(buf, sizeof(buf), "%s/"SHARE_D, _prefix_path);
_prefix_path_data = strdup(buf);
return 1;
}
/* no env var - examine process and possible argv0 */
if (!_e_prefix_try_proc())
{
if (!_e_prefix_try_argv(argv0))
{
#ifdef __MacOSX__
if (!_e_prefix_try_dyld())
{
#endif
_e_prefix_fallbacks();
return 0;
#ifdef __MacOSX__
}
#endif
}
}
/* _exe_path is now a full absolute path TO this exe - figure out rest */
/* if
* exe = /blah/whatever/bin/exe
* then
* prefix = /blah/whatever
* bin_dir = /blah/whatever/bin
* data_dir = /blah/whatever/share/enlightenment
* lib_dir = /blah/whatever/lib
*/
p = strrchr(_exe_path, '/');
if (p)
{
p--;
while (p >= _exe_path)
{
if (*p == '/')
{
_prefix_path = malloc(p - _exe_path + 1);
if (_prefix_path)
{
strncpy(_prefix_path, _exe_path, p - _exe_path);
_prefix_path[p - _exe_path] = 0;
/* bin and lib always together */
snprintf(buf, sizeof(buf), "%s/bin", _prefix_path);
_prefix_path_bin = strdup(buf);
snprintf(buf, sizeof(buf), "%s/lib", _prefix_path);
_prefix_path_lib = strdup(buf);
/* check if AUTHORS file is there - then our guess is right */
snprintf(buf, sizeof(buf), "%s/"MAGIC_DAT, _prefix_path);
if (stat(buf, &st) == 0)
{
snprintf(buf, sizeof(buf), "%s/"SHARE_D, _prefix_path);
_prefix_path_data = strdup(buf);
}
/* AUTHORS file not there. time to start hunting! */
else
{
if (_e_prefix_share_hunt())
{
return 1;
}
else
{
e_prefix_fallback();
return 0;
}
}
return 1;
}
else
{
e_prefix_fallback();
return 0;
}
}
p--;
}
}
e_prefix_fallback();
return 0;
if (pfx) return 1;
pfx = eina_prefix_new(argv0, e_prefix_determine,
"EMBRYO", "embryo", "include/default.inc",
PACKAGE_BIN_DIR,
PACKAGE_LIB_DIR,
PACKAGE_DATA_DIR,
PACKAGE_DATA_DIR);
if (!pfx) return 0;
return 1;
}
void
e_prefix_shutdown(void)
{
E_FREE(_exe_path);
E_FREE(_prefix_path);
E_FREE(_prefix_path_bin);
E_FREE(_prefix_path_data);
E_FREE(_prefix_path_lib);
}
void
e_prefix_fallback(void)
{
e_prefix_shutdown();
_e_prefix_fallbacks();
eina_prefix_free(pfx);
pfx = NULL;
}
const char *
e_prefix_get(void)
{
return _prefix_path;
return eina_prefix_get(pfx);
}
const char *
e_prefix_bin_get(void)
{
return _prefix_path_bin;
return eina_prefix_bin_get(pfx);
}
const char *
e_prefix_data_get(void)
{
return _prefix_path_data;
return eina_prefix_data_get(pfx);
}
const char *
e_prefix_lib_get(void)
{
return _prefix_path_lib;
}
/* local subsystem functions */
static int
_e_prefix_share_hunt(void)
{
char buf[4096], buf2[4096], *p;
struct stat st;
/* sometimes this isn't the case - so we need to do a more exhaustive search
* through more parent and subdirs. hre is an example i have seen:
*
* /blah/whatever/exec/bin/exe
* ->
* /blah/whatever/exec/bin
* /blah/whatever/common/share/enlightenment
* /blah/whatever/exec/lib
*/
/* this is pure black magic to try and find data shares */
/* 2. cache file doesn't exist or is invalid - we need to search - this is
* where the real black magic begins */
/* BLACK MAGIC 1:
* /blah/whatever/dir1/bin
* /blah/whatever/dir2/share/enlightenment
*/
if (!_prefix_path_data)
{
DIR *dirp;
struct dirent *dp;
snprintf(buf, sizeof(buf), "%s", _prefix_path);
p = strrchr(buf, '/');
if (p) *p = 0;
dirp = opendir(buf);
if (dirp)
{
char *file;
while ((dp = readdir(dirp)))
{
if ((strcmp(dp->d_name, ".")) && (strcmp(dp->d_name, "..")))
{
file = dp->d_name;
snprintf(buf2, sizeof(buf2), "%s/%s/"MAGIC_DAT, buf, file);
if (stat(buf2, &st) == 0)
{
snprintf(buf2, sizeof(buf2), "%s/%s/"SHARE_D, buf, file);
_prefix_path_data = strdup(buf2);
break;
}
}
}
closedir(dirp);
}
}
/* BLACK MAGIC 2:
* /blah/whatever/dir1/bin
* /blah/whatever/share/enlightenment
*/
if (!_prefix_path_data)
{
snprintf(buf, sizeof(buf), "%s", _prefix_path);
p = strrchr(buf, '/');
if (p) *p = 0;
snprintf(buf2, sizeof(buf2), "%s/"MAGIC_DAT, buf);
if (stat(buf, &st) == 0)
{
snprintf(buf2, sizeof(buf2), "%s/"SHARE_D, buf);
_prefix_path_data = strdup(buf2);
}
}
/* add more black magic as required as we discover weridnesss - remember
* this is to save users having to set environment variables to tell
* e where it lives, so e auto-adapts. so these code snippets are just
* logic to figure that out for the user
*/
/* done. we found it - write cache file */
if (_prefix_path_data)
{
return 1;
}
/* fail. everything failed */
return 0;
}
static int
_e_prefix_fallbacks(void)
{
char *p;
_prefix_path = strdup(PACKAGE_BIN_DIR);
p = strrchr(_prefix_path, '/');
if (p) *p = 0;
_prefix_path_bin = strdup(PACKAGE_BIN_DIR);
_prefix_path_data = strdup(PACKAGE_DATA_DIR);
_prefix_path_lib = strdup(PACKAGE_LIB_DIR);
printf("WARNING: Embryo could not determine its installed prefix\n"
" and is falling back on the compiled in default:\n"
" %s\n"
" You might like to try setting the following environment variables:\n"
" EMBRYO_PREFIX - points to the base prefix of install\n"
" EMBRYO_BIN_DIR - optional in addition to E_PREFIX to provide\n"
" a more specific binary directory\n"
" EMBRYO_LIB_DIR - optional in addition to E_PREFIX to provide\n"
" a more specific library dir\n"
" EMBRYO_DATA_DIR - optional in addition to E_PREFIX to provide\n"
" a more specific location for shared data\n"
,
_prefix_path);
return 1;
}
#ifdef __MacOSX__
static int
_e_prefix_try_dyld(void)
{
char path[PATH_MAX];
uint32_t size = sizeof (path);
if (_NSGetExecutablePath(path, &size) != 0)
return 0;
_exe_path = strdup(path);
return 1;
}
#endif
static int
_e_prefix_try_proc(void)
{
FILE *f;
char buf[4096];
void *func = NULL;
func = (void *)_e_prefix_try_proc;
f = fopen("/proc/self/maps", "r");
if (!f) return 0;
while (fgets(buf, sizeof(buf), f))
{
int len;
char *p, mode[5] = "";
unsigned long ptr1 = 0, ptr2 = 0;
len = strlen(buf);
if (buf[len - 1] == '\n')
{
buf[len - 1] = 0;
len--;
}
if (sscanf(buf, "%lx-%lx %4s", &ptr1, &ptr2, mode) == 3)
{
if (!strcmp(mode, "r-xp"))
{
if (((void *)ptr1 <= func) && (func < (void *)ptr2))
{
p = strchr(buf, '/');
if (p)
{
if (len > 10)
{
if (!strcmp(buf + len - 10, " (deleted)"))
buf[len - 10] = 0;
}
_exe_path = strdup(p);
fclose(f);
return 1;
}
else
break;
}
}
}
}
fclose(f);
return 0;
}
static int
_e_prefix_try_argv(char *argv0)
{
char *path, *p, *cp, *s;
int len, lenexe;
char buf[4096], buf2[4096], buf3[4096];
/* 1. is argv0 abs path? */
if (argv0[0] == '/')
{
_exe_path = strdup(argv0);
if (access(_exe_path, X_OK) == 0) return 1;
free(_exe_path);
_exe_path = NULL;
return 0;
}
/* 2. relative path */
if (strchr(argv0, '/'))
{
if (getcwd(buf3, sizeof(buf3)))
{
snprintf(buf2, sizeof(buf2), "%s/%s", buf3, argv0);
if (realpath(buf2, buf))
{
_exe_path = strdup(buf);
if (access(_exe_path, X_OK) == 0) return 1;
free(_exe_path);
_exe_path = NULL;
}
}
}
/* 3. argv0 no path - look in PATH */
path = getenv("PATH");
if (!path) return 0;
p = path;
cp = p;
lenexe = strlen(argv0);
while ((p = strchr(cp, ':')))
{
len = p - cp;
s = malloc(len + 1 + lenexe + 1);
if (s)
{
strncpy(s, cp, len);
s[len] = '/';
strcpy(s + len + 1, argv0);
if (realpath(s, buf))
{
if (access(buf, X_OK) == 0)
{
_exe_path = strdup(buf);
free(s);
return 1;
}
}
free(s);
}
cp = p + 1;
}
len = strlen(cp);
s = malloc(len + 1 + lenexe + 1);
if (s)
{
strncpy(s, cp, len);
s[len] = '/';
strcpy(s + len + 1, argv0);
if (realpath(s, buf))
{
if (access(buf, X_OK) == 0)
{
_exe_path = strdup(buf);
free(s);
return 1;
}
}
free(s);
}
/* 4. big problems. arg[0] != executable - weird execution */
return 0;
return eina_prefix_lib_get(pfx);
}

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@ -1,6 +1,5 @@
int e_prefix_determine(char *argv0);
void e_prefix_shutdown(void);
void e_prefix_fallback(void);
const char *e_prefix_get(void);
const char *e_prefix_bin_get(void);
const char *e_prefix_data_get(void);

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@ -119,31 +119,7 @@ static char binfname[PATH_MAX]; /* binary file name */
int
main(int argc, char *argv[], char *env[] __UNUSED__)
{
char argv0[PATH_MAX];
int i;
snprintf(argv0, sizeof(argv0), "%s", argv[0]);
/* Linux stores the name of the program in argv[0], but not the path.
* To adjust this, I store a string with the path in argv[0]. To do
* so, I try to get the current path with getcwd(), and if that fails
* I search for the PWD= setting in the environment.
*/
if (getcwd(argv0, PATH_MAX))
{
i = strlen(argv0);
snprintf(argv0 + i, sizeof(argv0) - i, "/%s", argv[0]);
}
else
{
char *pwd = getenv("PWD");
if (pwd)
snprintf(argv0, sizeof(argv0), "%s/%s", pwd, argv[0]);
} /* if */
argv[0] = argv0; /* set location to new first parameter */
e_prefix_determine(argv0);
e_prefix_determine(argv[0]);
return sc_compile(argc, argv);
}