bcollet/socat
1
0
Fork 0
mirror of https://repo.or.cz/socat.git synced 2025-07-17 00:23:25 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

environ variable from C runtime is not declared on all systems

Browse source
This commit is contained in:
Gerhard Rieger 2015-01-18 17:43:13 +01:00
parent f749f5c3e4
commit f0abfc19fd
4 changed files with 36 additions and 0 deletions

23
configure.in
View file

@ -1899,6 +1899,29 @@ if test -n "$WITH_FIPS"; then
fi
AC_SUBST(FIPSLD_CC)
# autoconf does not seem to provide AC_CHECK_VAR or so
# thus we have to check by foot
AC_MSG_CHECKING(for declaration of environ)
AC_CACHE_VAL(sc_cv_decl_environ,
[AC_TRY_COMPILE([#include <unistd.h>],[char **s = environ;],
[sc_cv_decl_environ=yes],
[sc_cv_decl_environ=no])])
if test $sc_cv_decl_environ = yes; then
AC_DEFINE(HAVE_DECL_ENVIRON)
fi
AC_MSG_RESULT($sc_cv_decl_environ)
# on some systems environ exists but not the declaration
AC_MSG_CHECKING(for var environ)
AC_CACHE_VAL(sc_cv_var_environ,
[AC_TRY_COMPILE([],[extern char **environ; char **s = environ;],
[sc_cv_var_environ=yes],
[sc_cv_var_environ=no])])
if test $sc_cv_var_environ = yes; then
AC_DEFINE(HAVE_VAR_ENVIRON)
fi
AC_MSG_RESULT($sc_cv_var_environ)
# allow BUILD_DATE to be externally set for build reproducibility
if test "$BUILD_DATE"; then
AC_DEFINE_UNQUOTED(BUILD_DATE, ["$BUILD_DATE"])