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- #!/bin/sh
- # Copyright (C) 1992, 1993 Free Software Foundation
- #
- # This file is part of the GNU IO Library. This library is free
- # software; you can redistribute it and/or modify it under the
- # terms of the GNU General Public License as published by the
- # Free Software Foundation; either version 2, or (at your option)
- # any later version.
- #
- # This library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with GNU CC; see the file COPYING. If not, write to
- # the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- # Written by Per Bothner (bothner@cygnus.com)
-
- # This is a shell-script that figures out various things about a
- # system, and writes (to stdout) a C-style include files with
- # suitable definitions, including all the standard Posix types.
- # It works by compiling various test programs -- some are run through
- # the C pre-processor, and the output examined.
- # The test programs are only compiled, not executed, so the script
- # should even if you're cross-compiling.
- # It uses $CC (which defaults to cc) to compile C programs (extension .c),
- # and $CXX (which defaults to gcc) to compile C++ programs (extension .C).
- # The shell-script is written for libg++.a.
-
- # Usage: gen-params [NAME1=name1 ...]
- # - where an assignment (such as size_t="unsigned int" means to
- # use that value, instead of trying to figure it out.
-
- # Uncomment following line for debugging
- # set -x
-
- SED=sed
-
- # Evaluate the arguments (which should be assignments):
- for arg in "$@"; do
- # Quote arg (i.e. FOO=bar => FOO='bar'), then eval it.
- eval `echo "$arg" | ${SED} -e "s|^\(.*\)=\(.*\)|\1='\2'|"`
- done
-
- macro_prefix=${macro_prefix-"_G_"}
- rootdir=`pwd`/..
- gccdir=${gccdir-${rootdir}/gcc}
- binutilsdir=${binutilsdir-${rootdir}/binutils}
- CC=${CC-`if [ -f ${gccdir}/xgcc ] ; \
- then echo ${gccdir}/xgcc -B${gccdir}/ -I${gccdir}/include ; \
- else echo cc ; fi`}
- CXX=${CXX-`if [ -f ${gccdir}/xgcc ] ; \
- then echo ${gccdir}/xgcc -B${gccdir}/ -I${gccdir}/include ; \
- else echo gcc ; fi`}
- CPP=${CPP-`echo ${CC} -E`}
- CONFIG_NM=${CONFIG_NM-`if [ -f ${binutilsdir}/nm ] ; \
- then echo ${binutilsdir}/nm ; \
- else echo nm ; fi`}
-
- cat <<!EOF!
- /* AUTOMATICALLY GENERATED; DO NOT EDIT! */
- #ifndef ${macro_prefix}config_h
- #define ${macro_prefix}config_h
- !EOF!
-
- if [ x"${LIB_VERSION}" != "x" ] ; then
- echo "#define ${macro_prefix}LIB_VERSION" '"'${LIB_VERSION}'"'
- fi
-
- # This program is used to test if the compiler prepends '_' before identifiers.
- # It is also used to check the g++ uses '$' or '.' various places.
-
- if test -z "${NAMES_HAVE_UNDERSCORE}" -o -z "${DOLLAR_IN_LABEL}" ; then
- cat >dummy.C <<!EOF!
- struct filebuf {
- virtual int foo();
- };
- filebuf ff;
- extern "C" int FUNC(int);
- int FUNC(int i) { return i+10; }
- !EOF!
-
- if ${CXX} -c dummy.C ; then
- if test -n "${NAMES_HAVE_UNDERSCORE}" ; then
- echo "#define ${macro_prefix}NAMES_HAVE_UNDERSCORE ${NAMES_HAVE_UNDERSCORE}"
- elif test "`${CONFIG_NM} dummy.o | grep _FUNC`" != ""; then
- echo "#define ${macro_prefix}NAMES_HAVE_UNDERSCORE 1"
- elif test "`${CONFIG_NM} dummy.o | grep FUNC`" != ""; then
- echo "#define ${macro_prefix}NAMES_HAVE_UNDERSCORE 0"
- else
- echo "${CONFIG_NM} failed to find FUNC in dummy.o!" 1>&2; exit -1;
- fi
-
- # if test -n "${DOLLAR_IN_LABEL}" ; then
- # echo "#define ${macro_prefix}DOLLAR_IN_LABEL ${DOLLAR_IN_LABEL}"
- # elif test "`${CONFIG_NM} dummy.o | grep 'vt[$$]7filebuf'`" != ""; then
- # echo "#define ${macro_prefix}DOLLAR_IN_LABEL 1"
- # elif test "`${CONFIG_NM} dummy.o | grep 'vt[.]7filebuf'`" != ""; then
- # echo "#define ${macro_prefix}DOLLAR_IN_LABEL 0"
- # elif test "`${CONFIG_NM} dummy.o | grep 'vtbl__7filebuf'`" != ""; then
- # echo "#define ${macro_prefix}DOLLAR_IN_LABEL 0"
- # else
- # echo "gen-params: ${CONFIG_NM} failed to find vt[.\$]filebuf in dummy.o!" 1>&2; exit 1
- # fi
- else
- # The compile failed for some reason (no C++?)
- echo "gen-params: could not compile dummy.C with ${CXX}" 1>&2; exit 1;
- fi
- fi
-
- # A little test program to check if struct stat has st_blksize.
- cat >dummy.c <<!EOF!
- #include <sys/types.h>
- #include <sys/stat.h>
- int BLKSIZE(struct stat *st)
- {
- return st->st_blksize;
- }
- !EOF!
-
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_ST_BLKSIZE 1"
- else
- echo "#define ${macro_prefix}HAVE_ST_BLKSIZE 0"
- fi
-
- # Next, generate definitions for the standard types (such as mode_t)
- # compatible with those in the standard C header files.
- # It works by a dummy program through the C pre-processor, and then
- # using sed to search for typedefs in the output.
-
- cat >dummy.c <<!EOF!
- #include <sys/types.h>
- #include <stddef.h>
- #include <stdarg.h>
- #include <stdio.h>
- #include <time.h>
- #include <signal.h>
- #ifdef size_t
- typedef size_t Xsize_t;
- #elif defined(__SIZE_TYPE__)
- typedef __SIZE_TYPE__ Xsize_t;
- #endif
- #ifdef ptrdiff_t
- typedef ptrdiff_t Xptrdiff_t;
- #elif defined(__PTRDIFF_TYPE__)
- typedef __PTRDIFF_TYPE__ Xptrdiff_t;
- #endif
- #ifdef wchar_t
- typedef wchar_t Xwchar_t;
- #elif defined(__WCHAR_TYPE__)
- typedef __WCHAR_TYPE__ Xwchar_t;
- #endif
- #ifdef va_list
- typedef va_list XXXva_list;
- #endif
- #ifdef BUFSIZ
- int XBUFSIZ=BUFSIZ;
- #endif
- #ifdef FOPEN_MAX
- int XFOPEN_MAX=FOPEN_MAX;
- #endif
- #ifdef FILENAME_MAX
- int XFILENAME_MAX=FILENAME_MAX;
- #endif
- !EOF!
-
- if ${CPP} dummy.c >TMP ; then true
- else
- echo "gen-params: could not invoke ${CPP} on dummy.c" 1>&2 ; exit 1
- fi
- tr ' ' ' ' <TMP >dummy.out
-
- for TYPE in dev_t clock_t fpos_t gid_t ino_t mode_t nlink_t off_t pid_t ptrdiff_t sigset_t size_t ssize_t time_t uid_t va_list wchar_t int32_t uint_32_t ; do
- IMPORTED=`eval 'echo $'"$TYPE"`
- if [ -n "${IMPORTED}" ] ; then
- eval "$TYPE='$IMPORTED"
- else
- # Search dummy.out for a typedef for $TYPE, and write it out
- # to TMP in #define syntax.
- rm -f TMP
- ${SED} -n -e "s|typedef *\(.*\) X*$TYPE *;|\1|w TMP" <dummy.out>/dev/null
- # Now select the first definition.
- if [ -s TMP ]; then
- # VALUE is now the typedef'd definition of $TYPE.
- eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'"
- # Unless VALUE contains a blank, look for a typedef for it
- # in turn (this could be a loop, but that would be over-kill).
- if echo $VALUE | grep " " >/dev/null ; then true
- else
- rm -f TMP
- ${SED} -n -e "s|typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <dummy.out>/dev/null
- if [ -s TMP ]; then
- eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'"
- fi
- fi
- eval "$TYPE='$VALUE'"
- fi
- fi
- done
-
- cat <<!EOF!
- typedef ${clock_t-int /* default */} ${macro_prefix}clock_t;
- typedef ${dev_t-int /* default */} ${macro_prefix}dev_t;
- typedef ${fpos_t-long /* default */} ${macro_prefix}fpos_t;
- typedef ${gid_t-int /* default */} ${macro_prefix}gid_t;
- typedef ${ino_t-int /* default */} ${macro_prefix}ino_t;
- typedef ${mode_t-int /* default */} ${macro_prefix}mode_t;
- typedef ${nlink_t-int /* default */} ${macro_prefix}nlink_t;
- typedef ${off_t-long /* default */} ${macro_prefix}off_t;
- typedef ${pid_t-int /* default */} ${macro_prefix}pid_t;
- typedef ${ptrdiff_t-long int /* default */} ${macro_prefix}ptrdiff_t;
- typedef ${sigset_t-int /* default */} ${macro_prefix}sigset_t;
- typedef ${size_t-unsigned long /* default */} ${macro_prefix}size_t;
- typedef ${time_t-int /* default */} ${macro_prefix}time_t;
- typedef ${uid_t-int /* default */} ${macro_prefix}uid_t;
- typedef ${wchar_t-int /* default */} ${macro_prefix}wchar_t;
- typedef ${int32_t-int /* default */} ${macro_prefix}int32_t;
- typedef ${uint32_t-unsigned int /* default */} ${macro_prefix}uint32_t;
- !EOF!
-
-
- # ssize_t is the signed version of size_t
- if [ -n "${ssize_t}" ] ; then
- echo "typedef ${ssize_t} ${macro_prefix}ssize_t;"
- elif [ -z "${size_t}" ] ; then
- echo "typedef long ${macro_prefix}ssize_t;"
- else
- # Remove "unsigned" from ${size_t} to get ${ssize_t}.
- tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`"
- if [ -z "$tmp" ] ; then
- tmp=int
- else
- # check $tmp doesn't conflict with <unistd.h>
- echo "#include <unistd.h>
- extern $tmp read();" >dummy.c
- ${CC} -c dummy.c >/dev/null 2>&1 || tmp=int
- fi
- echo "typedef $tmp /* default */ ${macro_prefix}ssize_t;"
- fi
-
- # va_list can cause problems (e.g. some systems have va_list as a struct).
- # Check to see if ${va_list-char*} really is compatible with stdarg.h.
- cat >dummy.C <<!EOF!
- #define X_va_list ${va_list-char* /* default */}
- extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */
- extern "C" {
- #include <stdarg.h>
- }
- long foo(X_va_list ap) { return va_arg(ap, long); }
- long bar(int i, ...)
- { va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; }
- !EOF!
- if ${CXX} -c dummy.C >/dev/null 2>&1 ; then
- # Ok: We have something that works.
- echo "typedef ${va_list-char* /* default */} ${macro_prefix}va_list;"
- else
- # No, it breaks. Indicate that <stdarg.h> must be included.
- echo "#define ${macro_prefix}NEED_STDARG_H
- #define ${macro_prefix}va_list va_list"
- fi
-
- cat >dummy.c <<!EOF!
- #include <signal.h>
- extern int (*signal())();
- extern int dummy (int);
- main()
- {
- int (*oldsig)(int) = signal (1, dummy);
- (void) signal (2, oldsig);
- return 0;
- }
- !EOF!
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}signal_return_type int"
- else
- echo "#define ${macro_prefix}signal_return_type void"
- fi
-
- # check sprintf return type
-
- cat >dummy.c <<!EOF!
- #include <stdio.h>
- extern int sprintf(); char buf[100];
- int main() { return sprintf(buf, "%d", 34); }
- !EOF!
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}sprintf_return_type int"
- else
- echo "#define ${macro_prefix}sprintf_return_type char*"
- fi
-
- # Look for some standard macros
- for NAME in BUFSIZ FOPEN_MAX FILENAME_MAX NULL ; do
- IMPORTED=`eval 'echo $'"$NAME"`
- if [ -n "${IMPORTED}" ] ; then
- eval "$NAME='$IMPORTED /* specified */"
- else
- rm -f TMP
- ${SED} -n -e "s|int X${NAME}=\(.*\);|\1|w TMP" <dummy.out>/dev/null
- # Now select the first definition.
- if [ -s TMP ]; then
- eval "$NAME='"`${SED} -e '2,$d' <TMP`"'"
- fi
- fi
- done
-
- cat <<!EOF!
- #define ${macro_prefix}BUFSIZ ${BUFSIZ-1024 /* default */}
- #define ${macro_prefix}FOPEN_MAX ${FOPEN_MAX-32 /* default */}
- #define ${macro_prefix}FILENAME_MAX ${FILENAME_MAX-1024 /* default */}
- #define ${macro_prefix}NULL ${NULL-0 /* default */}
- #define ${macro_prefix}ARGS(ARGLIST) (...)
- !EOF!
-
- rm -f dummy.c dummy.o
-
- if test -n "${HAVE_ATEXIT}" ; then
- echo "#define ${macro_prefix}HAVE_ATEXIT ${HAVE_ATEXIT}"
- else
- cat >dummy.c <<!EOF!
- #include <stdlib.h>
- int main()
- {
- atexit (0);
- }
- !EOF!
- if ${CC} dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_ATEXIT 1"
- else
- echo "#define ${macro_prefix}HAVE_ATEXIT 0"
- fi
- fi
-
-
- # *** Check for presence of certain include files ***
-
- # check for sys/resource.h
-
- if test -n "${HAVE_SYS_RESOURCE}" ; then
- echo "#define ${macro_prefix}HAVE_SYS_RESOURCE ${HAVE_SYS_RESOURCE}"
- else
- cat >dummy.c <<!EOF!
- #include <sys/time.h>
- #include <sys/resource.h>
- int main()
- {
- struct rusage res;
- getrusage(RUSAGE_SELF, &res);
- return (int)(res.ru_utime.tv_sec + (res.ru_utime.tv_usec / 1000000.0));
- }
- !EOF!
- # Note: We link because some systems have sys/resource, but not getrusage().
- if ${CC} dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_SYS_RESOURCE 1"
- else
- echo "#define ${macro_prefix}HAVE_SYS_RESOURCE 0"
- fi
- fi
-
- # check for sys/socket.h
-
- if test -n "${HAVE_SYS_SOCKET}" ; then
- echo "#define ${macro_prefix}HAVE_SYS_SOCKET ${HAVE_SYS_SOCKET}"
- else
- echo '#include <sys/types.h>' >dummy.c
- echo '#include <sys/socket.h>' >>dummy.c
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_SYS_SOCKET 1"
- else
- echo "#define ${macro_prefix}HAVE_SYS_SOCKET 0"
- fi
- fi
-
- # Check for a (Posix-compatible) sys/wait.h */
-
- if test -n "${HAVE_SYS_WAIT}" ; then
- echo "#define ${macro_prefix}HAVE_SYS_WAIT ${HAVE_SYS_WAIT}"
- else
- cat >dummy.C <<!EOF!
- extern "C" {
- #include <sys/types.h>
- #include <sys/wait.h>
- }
- int f() { int i; wait(&i); return i; }
- !EOF!
- #define ${macro_prefix}HAVE_UNION_WAIT 1"
- if ${CXX} -c dummy.C >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_SYS_WAIT 1"
- else
- echo "#define ${macro_prefix}HAVE_SYS_WAIT 0"
- fi
- fi
-
- if test -n "${HAVE_UNISTD}" ; then
- echo "#define ${macro_prefix}HAVE_UNISTD ${HAVE_UNISTD}"
- else
- echo '#include <unistd.h>' >dummy.c
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_UNISTD 1"
- else
- echo "#define ${macro_prefix}HAVE_UNISTD 0"
- fi
- fi
-
- if test -n "${HAVE_DIRENT}" ; then
- echo "#define ${macro_prefix}HAVE_DIRENT ${HAVE_DIRENT}"
- else
- echo '#include <sys/types.h>
- #include <dirent.h>' >dummy.c
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_DIRENT 1"
- else
- echo "#define ${macro_prefix}HAVE_DIRENT 0"
- fi
- fi
-
- if test -n "${HAVE_CURSES}" ; then
- echo "#define ${macro_prefix}HAVE_CURSES ${HAVE_CURSES}"
- else
- echo '#include <curses.h>' >dummy.c
- if ${CC} -c dummy.c >/dev/null 2>&1 ; then
- echo "#define ${macro_prefix}HAVE_CURSES 1"
- else
- echo "#define ${macro_prefix}HAVE_CURSES 0"
- fi
- fi
-
- # There is no test for this at the moment; it is just set by the
- # configuration files.
- if test -n "${MATH_H_INLINES}" ; then
- echo "#define ${macro_prefix}MATH_H_INLINES ${MATH_H_INLINES}"
- else
- echo "#define ${macro_prefix}MATH_H_INLINES 0"
- fi
-
- # Uncomment the following line if you don't have working templates.
- # echo "#define ${macro_prefix}NO_TEMPLATES"
-
- rm -f dummy.C dummy.o dummy.c dummy.out TMP core a.out
-
- echo "#endif /* !${macro_prefix}config_h */"
-