linux elf shlib; sys/wait.h; don't add -posix for NeXT

diff --git a/configure.in b/configure.in
index 78ec997994d0db171126351f4997a33ba44cfca3..3c55a4d801ed9db108c278a909782e6d3bb10ae6 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -49,22 +49,11 @@ fi
 
 # checks for UNIX variants that set C preprocessor variables
 AC_AIX
-AC_ISC_POSIX
 AC_MINIX
 
-was_it_defined=no
-AC_TRY_RUN([
-#ifdef _NEXT_SOURCE
-main() { exit(0); }
-#endif
-], AC_DEFINE(_POSIX_SOURCE)
-CC="$CC -posix"; was_it_defined=yes)
-AC_MSG_CHECKING(for NeXT)
-AC_MSG_RESULT($was_it_defined)
-
 # checks for header files
 AC_HEADER_STDC
-AC_CHECK_HEADERS(dlfcn.h fcntl.h limits.h signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h sys/audioio.h sys/param.h sys/select.h sys/time.h sys/times.h sys/un.h sys/utsname.h)
+AC_CHECK_HEADERS(dlfcn.h fcntl.h limits.h signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h sys/audioio.h sys/param.h sys/select.h sys/time.h sys/times.h sys/un.h sys/utsname.h sys/wait.h)
 AC_HEADER_DIRENT
 
 # checks for typedefs
@@ -125,12 +114,13 @@ then
        hp*|HP*) LDSHARED="ld -b";;
        OSF*) LDSHARED="ld -shared -expect_unresolved \"*\"";;
        DYNIX/ptx*) LDSHARED="ld -G";;
+       Linux*) LDSHARED="gcc-elf -shared";;
        *)      LDSHARED="ld";;
        esac
 fi
 AC_MSG_RESULT($LDSHARED)
 # CCSHARED are the C *flags* used to create objects to go into a shared
-# library -- this is only needed for HP-UX
+# library -- this is only needed for a few systems
 AC_MSG_CHECKING(CCSHARED)
 if test -z "$CCSHARED"
 then
@@ -139,16 +129,18 @@ then
                 then CCSHARED="-fpic";
                 else CCSHARED="+z";
                 fi;;
+       Linux*) CCSHARED="-fpic";;
        esac
 fi
 AC_MSG_RESULT($CCSHARED)
 # LINKFORSHARED are the flags passed to the $(CC) command that links
-# the python executable -- this is only needed for HP-UX
+# the python executable -- this is only needed for a few systems
 AC_MSG_CHECKING(LINKFORSHARED)
 if test -z "$LINKFORSHARED"
 then
        case $ac_sys_system in
        hp*|HP*) LINKFORSHARED="-Wl,-E";;
+       Linux*) LINKFORSHARED="-rdynamic";;
        esac
 fi
 AC_MSG_RESULT($LINKFORSHARED)