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| author | Gary V. Vaughan <gary@gnu.org> | 2014-11-20 21:50:48 +0000 |
|---|---|---|
| committer | Gary V. Vaughan <gary@gnu.org> | 2014-11-20 22:16:31 +0000 |
| commit | 1117977cc5c466546f155bacb82e9dd9a2f5b049 (patch) | |
| tree | a5cd87db1d0fb01b859f38a06b6be8faf7781c70 | |
| parent | 1d887c9b5002d8e9a4e65c192c8a1b7355cc356a (diff) | |
| download | m4-1117977cc5c466546f155bacb82e9dd9a2f5b049.tar.gz | |
modules: support _ symbol prefix requirement for dlsym.
* configure.ac (LT_FUNC_DLSYM_USCORE): Call it to set NEED_USCORE.
* m4/module.c (uscore_sym): New function. Use this to prepend an
underscore if NEED_USCORE was set at configure time.
Reported by KO Myung-Hun
Signed-off-by: Gary V. Vaughan <gary@gnu.org>
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | m4/module.c | 15 |
2 files changed, 16 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index a219665f..f43a412f 100644 --- a/configure.ac +++ b/configure.ac @@ -204,6 +204,8 @@ AC_MSG_RESULT([$use_modules]) AC_SUBST([DLPREOPEN]) AC_SUBST([PREOPEN_DEPENDENCIES]) +LT_FUNC_DLSYM_USCORE + ## ---------------- ## ## Gettext support. ## diff --git a/m4/module.c b/m4/module.c index 07e33519..8efb1a99 100644 --- a/m4/module.c +++ b/m4/module.c @@ -67,7 +67,20 @@ #define MODULE_SELF_NAME "!myself!" -static const char* module_dlerror (void); +#if NEED_USCORE +static void * +uscore_sym (void *handle, const char *symbol) +{ + char *symname = xasprintf ("_%s", symbol); + void *address = dlsym (handle, symname); + free (symname); + return address; +} + +#define dlsym uscore_sym +#endif + +static const char * module_dlerror (void); static void install_builtin_table (m4*, m4_module *); static void install_macro_table (m4*, m4_module *); |