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Annotation of coherent/g/usr/bin/gzip/configure.in, revision 1.1

1.1     ! root        1: dnl Process this file with autoconf to produce a configure script for gzip
        !             2: dnl
        !             3: dnl Written by [email protected] 28-Dec-92
        !             4: dnl Last modified 26-Jan-93
        !             5: dnl "Usage: ACL_HAVE_SHELL_HACK(ACTION_IF_EXISTS [, ACTION_IF_NOT_EXISTS])"
        !             6: dnl
        !             7: define(ACL_HAVE_SHELL_HACK, [dnl
        !             8: echo "checking for #! kernel hack"
        !             9: cat <<'__EOF__' > conftest.csh
        !            10: #!/bin/csh -f
        !            11: setenv SHELL /bin/csh
        !            12: # Avoid tcsh bug 'Bad Hertz Value':
        !            13: setenv HZ 60
        !            14: # Make sure foo doesn't get exported into the environment
        !            15: # Astoundingly, some versions of csh don't have unsetenv.
        !            16: unsetenv foo >& /dev/null
        !            17: unset foo
        !            18: set output="`./conftest.sh`"
        !            19: if ( "$[]output" == "foo=bar" ) then
        !            20:    exit 0
        !            21: endif
        !            22: exit 1
        !            23: __EOF__
        !            24: cat <<'__EOF__' > conftest.sh
        !            25: #!/bin/sh
        !            26: # If this is really run with sh, then 1st positional arg will be "foo=bar".
        !            27: # If this script was executed by csh, then a shell variable "foo" will have
        !            28: # the value "var".
        !            29: set foo=bar
        !            30: echo "$[]*"
        !            31: __EOF__
        !            32: chmod 777 conftest.csh conftest.sh
        !            33: (csh -f ./conftest.csh) 2> /dev/null
        !            34: if test $? = 0 ; then
        !            35:    :; $1
        !            36: else
        !            37:    :; $2
        !            38: fi
        !            39: rm -f conftest.csh conftest.sh
        !            40: ])dnl
        !            41: dnl
        !            42: dnl Same as AC_RETSIGTYPE, but use a void default.
        !            43: dnl
        !            44: define(AC_RETSIGTYP,
        !            45: [AC_COMPILE_CHECK([return type of signal handlers],
        !            46: [#include <sys/types.h>
        !            47: #include <signal.h>
        !            48: #ifdef signal
        !            49: #undef signal
        !            50: #endif
        !            51: extern int (*signal ()) ();],
        !            52: [int i;],
        !            53: [AC_DEFINE(RETSIGTYPE, int)],
        !            54: [],
        !            55: )]
        !            56: )dnl
        !            57: dnl
        !            58: dnl
        !            59: dnl End of local macros
        !            60: dnl
        !            61: AC_INIT(gzip.c)
        !            62: AC_PROG_CC
        !            63: dnl AC_PROG_CPP
        !            64: dnl
        !            65: dnl Try to assemble match.S with and without leading underline.
        !            66: dnl cc -E produces incorrect asm files on SVR4, we must use /lib/cpp.
        !            67: dnl Also, "gcc -E match.s" ignores -E, so we must use match.S.
        !            68: echo checking for underline in external names
        !            69: test -z "$CPP" -a -f /lib/cpp && CPP=/lib/cpp
        !            70: test -z "$CPP" && CPP="$CC -E"
        !            71: cat > conftest.c <<EOF
        !            72: int foo() {return 0;}
        !            73: EOF
        !            74: $CC -c conftest.c > /dev/null 2>&1
        !            75: if nm conftest.o | grep _foo > /dev/null 2>&1 ; then
        !            76:   :
        !            77: else
        !            78:   CPP="${CPP} -DNO_UNDERLINE"
        !            79: fi
        !            80: echo checking for assembler
        !            81: rm -f _match.o conftest.[co]
        !            82: $CPP $srcdir/match.S > _match.s
        !            83: if grep error < _match.s > /dev/null; then
        !            84:   OBJA=""
        !            85: elif $CC -c _match.s >/dev/null 2>&1 && test -f _match.o; then
        !            86:   DEFS="${DEFS} -DASMV"
        !            87:   OBJA=match.o
        !            88: fi
        !            89: rm -f _match.s _match.o
        !            90: dnl
        !            91: AC_PROG_INSTALL
        !            92: AC_AIX
        !            93: AC_MINIX
        !            94: AC_ISC_POSIX
        !            95: AC_DYNIX_SEQ
        !            96: AC_STDC_HEADERS
        !            97: dnl if STDC_HEADERS can't be defined, look for special files:
        !            98: AC_HEADER_CHECK(string.h, ,AC_DEFINE(NO_STRING_H))
        !            99: AC_HEADER_CHECK(stdlib.h, ,AC_DEFINE(NO_STDLIB_H))
        !           100: AC_HEADER_CHECK(memory.h, ,AC_DEFINE(NO_MEMORY_H))
        !           101: AC_HEADER_CHECK(fcntl.h,  ,AC_DEFINE(NO_FCNTL_H))
        !           102: AC_HAVE_HEADERS(unistd.h)
        !           103: utime=0
        !           104: AC_HEADER_CHECK(utime.h, utime=1 ,AC_DEFINE(NO_UTIME_H))
        !           105: if test $utime -eq 0; then
        !           106:   AC_HAVE_HEADERS(sys/utime.h)
        !           107: fi
        !           108: AC_DIR_HEADER
        !           109: dnl Work around incorrect dirent.h in NeXT 2.0:
        !           110: if test -f /usr/bin/hostinfo && /usr/bin/hostinfo | grep NeXT > /dev/null; then
        !           111:   if /usr/bin/hostinfo | grep -s "Mach [12]"; then
        !           112:     DEFS="`echo $DEFS | sed 's/-DDIRENT=1/-DSYSDIR=1/'`"
        !           113:   fi
        !           114: fi
        !           115: AC_XENIX_DIR
        !           116: AC_ALLOCA
        !           117: AC_RETSIGTYP
        !           118: ACL_HAVE_SHELL_HACK([SEDCMD="1d"], [SEDCMD=""])
        !           119: AC_PREFIX(gzip)
        !           120: AC_SUBST(OBJA)dnl
        !           121: AC_SUBST(SEDCMD)dnl
        !           122: AC_OUTPUT(Makefile)

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