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- From: Maarten ter Huurne <maarten@treewalker.org>
- Date: Sun, 14 Sep 2014 11:16:58 +0200
- Subject: Avoid mis-identifying systems as SVR4
- My openSUSE 13.1 Linux system was detected as SVR4 because it had
- libelf installed. This leads to linking with libelf, even though no
- symbols from that library were actually used, and to a workaround for
- a buggy getlogin() being enabled.
- It is not documented which exact SVR4 system had the bug that the
- workaround was added for, so all I could do is make an educated guess
- at the #defines its compiler would be likely to set.
- Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
- [Ricardo: rebase on top of 4.3.1]
- Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
- ---
- configure.ac | 14 ++++++++++++--
- 1 file changed, 12 insertions(+), 2 deletions(-)
- diff --git a/configure.ac b/configure.ac
- index 9cf7cee..e09e4cf 100644
- --- a/configure.ac
- +++ b/configure.ac
- @@ -179,14 +179,24 @@ AC_EGREP_CPP(yes,
- #endif
- ], LIBS="$LIBS -lsocket -linet";seqptx=1)
-
- +AC_CHECKING(SVR4)
- +AC_EGREP_CPP(yes,
- +[main () {
- +#if defined(SVR4) || defined(__SVR4)
- + yes;
- +#endif
- +], AC_NOTE(- you have a SVR4 system) AC_DEFINE(SVR4) svr4=1)
- +if test -n "$svr4" ; then
- oldlibs="$LIBS"
- LIBS="$LIBS -lelf"
- AC_CHECKING(SVR4)
- AC_TRY_LINK([#include <utmpx.h>
- ],,
- -[AC_CHECK_HEADER(dwarf.h, AC_DEFINE(SVR4) AC_DEFINE(BUGGYGETLOGIN),
- -[AC_CHECK_HEADER(elf.h, AC_DEFINE(SVR4) AC_DEFINE(BUGGYGETLOGIN))])]
- +[AC_CHECK_HEADER(dwarf.h, AC_DEFINE(BUGGYGETLOGIN),
- +[AC_CHECK_HEADER(elf.h, AC_DEFINE(BUGGYGETLOGIN))])]
- ,LIBS="$oldlibs")
- +fi
- +
- AC_CHECK_HEADERS([stropts.h string.h strings.h])
-
- AC_CHECKING(for Solaris 2.x)
- --
- 1.8.4.5
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