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Declare environ if the system does not do so

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The environ variable is supposed to be defined by the code using it, but
on glibc-based systems it will get defined if we request it, by including
<unistd.h> and defining _GNU_SOURCE.
This commit is contained in:
Guillem Jover 2023-04-01 12:41:42 +02:00
parent 1fb6c3f4ce
commit 44824aca3c
2 changed files with 8 additions and 0 deletions
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4
configure.ac
View File

@ -194,6 +194,10 @@ AC_CHECK_DECL([F_CLOSEM], [
#include <fcntl.h> #include <fcntl.h>
]]) ]])
AC_CHECK_DECLS([environ], [], [], [[
#include <unistd.h>
]])
AC_CACHE_CHECK([for GNU .init_array section support], AC_CACHE_CHECK([for GNU .init_array section support],
[libbsd_cv_gnu_init_array_support], [ [libbsd_cv_gnu_init_array_support], [
AC_RUN_IFELSE([ AC_RUN_IFELSE([

4
src/setproctitle.c
View File

@ -33,6 +33,10 @@
#include <string.h> #include <string.h>
#include "local-link.h" #include "local-link.h"
#if !HAVE_DECL_ENVIRON
extern char **environ;
#endif
static struct { static struct {
/* Original value. */ /* Original value. */
const char *arg0; const char *arg0;