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rtems/configure.in
Joel Sherrill 5c3511e5cf Big patch form Ralf Corsepius described in this email: 
Here is the result of my nightly work to get RTEMS_ROOT=$srcdir working
  with different shells and relative/absolute paths.

  What I did is relatively simple in principle:
  Instead of setting RTEMS_ROOT in configure.in and then let configure
  substitute @RTEMS_ROOT@ inside the Makefiles, I now let each Makefile
  set RTEMS_ROOT from each Makefile's @top_srcdir@ value.

  The difference is subtile, but with enormous side effects:
  - If RTEMS_ROOT is set in configure, then the same single value will be
  propagated to all Makefiles. This breaks using relative paths, as the
  relative path to the root of the source tree is used inside of all
  subdirectory Makefiles.
  - Now each Makefile.in sets RTEMS_ROOT = @top_srcdir@.  top_srcdir  is
  computed individually by configure for each single Makefile.in, hereby
  receiving the correct value, no matter if relative or absolute paths are
  used.

  To get this working, I needed to remove setting RTEMS_ROOT from
  target.cfg.in, because this overrides the value of RTEMS_ROOT from each
  individual Makefile.


  Furthermore, I removed RTEMS_CUSTOM from the Makefiles and replaced all
  "include $(RTEMS_CUSTOM)" directives with"include
  $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP)". Perhaps you don't like this,
  but I think, to have one variable less is clearer and easier to
  understand than having several variables refering to the next one.


  I enclose a small patch to this mail, which
  - fixes the config.h problem (to finally clearify misunderstands)
  - removes assignment/subsitution of RTEMS_ROOT from configure.in
  - contains a workaround for the application Makefile's RTEMS_ROOT
  problem (reported by Eric)
  - removes some unused lines from the toplevel Makefile.in
  - removes assignment of RTEMS_ROOT from make/target.cfg.in
1998-01-30 21:49:51 +00:00

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dnl Process this file with autoconf to produce a configure script.
dnl
dnl $Id$
AC_PREREQ(2.12)
AC_INIT(README)
dnl Checks for programs.
AC_PROG_MAKE_SET
AC_CANONICAL_SYSTEM
AC_ARG_WITH(cross-host,[ --with-cross-host=HOST host (cygnus)], \
host=$withval)
AC_ARG_ENABLE(gmake-print-directory, \
[ --enable-gmake-print-directory enable GNU Make's print directory], \
[case "${enableval}" in
yes) RTEMS_USE_OWN_PDIR=no ;;
no) RTEMS_USE_OWN_PDIR=yes ;;
*) AC_MSG_ERROR(bad value ${enableval} for gmake-print-directory option) ;;
esac],[RTEMS_USE_OWN_PDIR=yes])
AC_ARG_ENABLE(posix, \
[ --enable-posix enable posix interface], \
[case "${enableval}" in
yes) RTEMS_HAS_POSIX_API=yes ;;
no) RTEMS_HAS_POSIX_API=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for enable-posix option) ;;
esac],[RTEMS_HAS_POSIX_API=yes])
AC_ARG_ENABLE(ka9q, \
[ --enable-ka9q enable KA9Q TCP/IP stack], \
[case "${enableval}" in
yes) RTEMS_HAS_KA9Q=yes ;;
no) RTEMS_HAS_KA9Q=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for enable-ka9q option) ;;
esac],[RTEMS_HAS_KA9Q=yes])
AC_ARG_ENABLE(rtems-inlines, \
[ --enable-rtems-inlines enable RTEMS inline functions (use macros)], \
[case "${enableval}" in
yes) RTEMS_USE_MACROS=no ;;
no) RTEMS_USE_MACROS=yes ;;
*) AC_MSG_ERROR(bad value ${enableval} for disable-rtems-inlines option) ;;
esac],[RTEMS_USE_MACROS=no])
AC_ARG_ENABLE(cpp, \
[ --enable-cpp enable C++ support, and build the rtems++ library], \
[case "${enableval}" in
yes) RTEMS_HAS_CPLUSPLUS=yes ;;
no) RTEMS_HAS_CPLUSPLUS=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for enable-cpp option) ;;
esac], [RTEMS_HAS_CPLUSPLUS=no])
AC_ARG_ENABLE(gcc28, \
[ --enable-gcc28 enable use of gcc 2.8.x features], \
[case "${enableval}" in
yes) RTEMS_USE_GCC272=no ;;
no) RTEMS_USE_GCC272=yes ;;
*) AC_MSG_ERROR(bad value ${enableval} for gcc-28 option) ;;
esac],[RTEMS_USE_GCC272=no])
AC_ARG_ENABLE(libcdir, \
[ --enable-libcdir=directory set the directory for the C library], \
[ RTEMS_LIBC_DIR="${enableval}" ; \
test -d ${enableval} || AC_MSG_ERROR("$enableval is not a directory" ) ] )
RTEMS_PREFIX=${target_cpu}-${target_vendor}
dnl BEGIN configure.host.in
AC_PATH_PROG(CAT,cat)
AC_PATH_PROG(RM,rm)
AC_PATH_PROG(CP,cp)
AC_PATH_PROG(MV,mv)
AC_PATH_PROG(LN,ln)
AC_PROG_LN_S
AC_PATH_PROG(CHMOD,chmod)
AC_PATH_PROG(SORT,sort)
AC_CHECK_FUNCS(strerror)
dnl check mkdir behaviour, try to get mkdir -p -m 0755
RTEMS_PATH_MKDIR
RTEMS_PROG_MKDIR_M
RTEMS_PROG_MKDIR_P
test "$rtems_cv_prog_MKDIR_P" = "yes" && MKDIR="$MKDIR -p"
test "$rtems_cv_prog_MKDIR_M" = "yes" && MKDIR="$MKDIR -m 0755"
AC_PATH_PROG(TOUCH,touch)
AC_PATH_PROG(CMP,cmp)
AC_PATH_PROG(SED,sed)
AC_PATH_PROGS(M4,gm4 m4)
dnl NOTE: prefer bash over ksh over sh
AC_PATH_PROGS(KSH,bash ksh sh)
if test -z "$KSH"; then
dnl NOTE: This cannot happen -- /bin/sh must always exist
AC_MSG_ERROR(
[***]
[ Cannot determine a usable shell bash/ksh/sh]
[ Please contact your system administrator] );
fi
dnl END configure.host.in
dnl BEGIN configure.target.in
dnl echo "TARGET"
dnl echo " cpu --> $target_cpu"
dnl echo " os --> $target_os"
dnl echo " vendor --> $target_vendor"
dnl canonicalize target name
dnl NOTE: Most rtems targets do not fullfil autoconf
dnl targets naming conventions "processor-vendor-os"
dnl Therefore autoconf's AC_CANONICAL_TARGET will fail for them
dnl and we have to fix it for rtems ourselves
dnl
dnl The original plan was to do CPU-BSP-rtems or CPU-rtems to
dnl imply all BSPs. Eventually we would like to build a collection
dnl of CPU model specific RTEMS libraries which in conjunction with
dnl a BSP library would be used to link an application.
RTEMS_HOST=$host_os
case "${target}" in
# hpux unix port should go here
hppa1.1-rtems*)
target_cpu=hppa1_1
;;
i[[3456]]86-go32-rtems*)
target_cpu=i386
rtems_bsp="go32 go32_p5"
skip_startfiles="yes"
RTEMS_HAS_POSIX_API=no
;;
i[[3456]]86-rtems*)
target_cpu=i386
;;
i[[3456]]86-pc-linux*) # unix "simulator" port
target_cpu=unix
RTEMS_HAS_POSIX_API=no
RTEMS_HOST=Linux
;;
no_cpu-rtems*)
target_cpu=no_cpu
RTEMS_HAS_POSIX_API=no
;;
powerpc-*tems*)
target_cpu=ppc
;;
sparc-sun-solaris*) # unix "simulator" port
target_cpu=unix
RTEMS_HAS_POSIX_API=no
RTEMS_HOST=Solaris
;;
*)
RTEMS_CANONICAL_TARGET_CPU
;;
esac
# Override the set of BSPs to be built.
AC_ARG_ENABLE(rtemsbsp, \
[ --enable-rtemsbsp=bsp1 bsp2 .. BSPs to include in build], \
rtems_bsp=$enableval \
)
# Is this a supported CPU?
AC_MSG_CHECKING([if cpu $target_cpu is supported])
if test -d "$srcdir/c/src/exec/score/cpu/$target_cpu"; then
AC_MSG_RESULT(yes)
makefiles="$makefiles c/src/exec/score/cpu/$target_cpu/Makefile"
else
AC_MSG_ERROR(no)
fi
# find all the Executive Makefiles
RTEMS_CHECK_MAKEFILE(c/src/exec/score/tools/$target_cpu)
RTEMS_CHECK_MAKEFILE(c/src/exec/rtems)
RTEMS_CHECK_MAKEFILE(c/src/exec/sapi)
if test "$RTEMS_HAS_POSIX_API" = "yes"; then
RTEMS_CHECK_MAKEFILE(c/src/exec/posix)
makefiles="$makefiles c/src/exec/wrapup/posix/Makefile"
fi
# find all the Makefiles for the BSPs
if test -d "$srcdir/c/src/lib/libbsp/$target_cpu"; then
makefiles="$makefiles c/src/lib/libbsp/$target_cpu/Makefile"
if test -z "$rtems_bsp"; then
AC_MSG_CHECKING([for bsps])
files=`ls $srcdir/c/src/lib/libbsp/$target_cpu`
for file in $files; do
case $file in
shared*);;
Makefile*);;
READ*);;
CVS*);;
pxfl*);;
go32*);; # so the i386 port can pick up the other Makefiles
# Now account for BSPs with build variants
gen68360) rtems_bsp="$rtems_bsp gen68360 gen68360_040";;
p4000) rtems_bsp="$rtems_bsp p4600 p4650";;
mvme162) rtems_bsp="$rtems_bsp mvme162 mvme162lx";;
*) rtems_bsp="$rtems_bsp $file";;
esac;
done
AC_MSG_RESULT([$rtems_bsp done])
fi
# collect makefiles for each bsp
for i in $rtems_bsp; do
# make sure there is a make/custom file for the bsp
if test ! -r "$srcdir/make/custom/${i}.cfg"; then
AC_MSG_ERROR([no make/custom/${i}.cfg file for BSP $i])
fi
# account for "aliased" bsps which share source code
case $i in
mvme162lx) bspdir=mvme162 ;; # mvme162 board variant
gen68360_040) bspdir=gen68360 ;; # 68360 in companion mode
go32_p5) bspdir=go32 ;; # go32 on Pentium class CPU
p4600) bspdir=p4000 ;; # p4000 board with IDT 4600
p4650) bspdir=p4000 ;; # p4000 board with IDT 4650
*) bspdir=$i;;
esac
# Is there code where there should be for this BSP?
if test -d "$srcdir/c/src/lib/libbsp/$target_cpu/$bspdir"; then
RTEMS_BSP_LIST="$RTEMS_BSP_LIST $i"
# make sure the Makefiles in a bsp directory are only done once
echo $bspdirs | grep $bspdir >/dev/null 2>&1
if test $? -ne 0 ; then
bspdirs="$bspdirs $bspdir"
RTEMS_CHECK_MAKEFILE(c/src/lib/libbsp/$target_cpu/$bspdir)
fi
else
AC_MSG_ERROR([unable to find libbsp directory ($bspdir) for $i])
fi
done
fi
# find all the CPU dependent library Makefiles
RTEMS_CHECK_MAKEFILE(c/src/lib/libcpu/$target_cpu)
dnl Workaround for go32
if test "$skip_startfiles" != "yes"; then
RTEMS_CHECK_MAKEFILE(c/src/lib/start/$target_cpu)
fi
dnl END configure.target.in
#
# Target configurations are listed in alphabetical order.
# The BSPs for a target configuration are also listed in alphabetical order.
#
dnl NOTE: host_os is automatically set by autoconf
if [[ "${program_prefix}" = "NONE" ]] ; then
if [[ "${target}" = "${host}" ]] ; then
program_prefix=
else
program_prefix=${target}-
fi
fi
PROJECT_ROOT=`pwd;`
# If RTEMS macros are enabled, then use them. Otherwise, use inlines.
if test "$RTEMS_USE_MACROS" = "yes"; then
inline_dir=macros
if test "$RTEMS_HAS_POSIX_API" = "yes"; then
# The problem is that there is currently no code in posix/macros :)
AC_MSG_ERROR(Macros are not implemented for the POSIX API)
fi
else
inline_dir=inline
fi
# If the KA9Q TCP/IP stack is enabled, then find all KA9Q Makefiles
if test "$RTEMS_HAS_KA9Q" = "yes"; then
makefiles="$makefiles c/src/lib/libka9q/Makefile"
fi
# If the C++ support is enabled, then include the Makefiles
if test "$RTEMS_HAS_CPLUSPLUS" = "yes"; then
makefiles="$makefiles c/src/lib/librtems++/Makefile"
fi
# If the tests are enabled, then find all the test suite Makefiles
AC_MSG_CHECKING([Are the test suites enabled? ])
tests_enabled=yes
AC_ARG_ENABLE(tests, \
[ --enable-tests enable tests], \
[case "${enableval}" in
yes) AC_MSG_RESULT(yes) ;;
no) AC_MSG_RESULT(no) ; tests_enabled=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for tests option) ;;
esac],
AC_MSG_RESULT(yes)
)
if test "$tests_enabled" = "yes"; then
RTEMS_CHECK_MAKEFILE(c/src/tests/tools/$target_cpu)
RTEMS_CHECK_MAKEFILE(c/src/tests/libtests)
RTEMS_CHECK_MAKEFILE(c/src/tests/sptests)
RTEMS_CHECK_MAKEFILE(c/src/tests/tmtests)
RTEMS_CHECK_MAKEFILE(c/src/tests/mptests)
if test "$RTEMS_HAS_POSIX" = "yes"; then
RTEMS_CHECK_MAKEFILE(c/src/tests/psxtests)
fi
fi
# If the HWAPI is enabled, the find the HWAPI Makefiles
AC_MSG_CHECKING([Is the HWAPI enabled? ])
AC_ARG_ENABLE(hwapi, \
[ --enable-hwapi enable hardware API library], \
[case "${enableval}" in
yes) AC_MSG_RESULT(yes)
if test -f ${srcdir}/c/src/lib/libhwapi/Makefile.in ; then
makefiles="$makefiles c/src/lib/libhwapi/Makefile"
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/analog)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/discrete)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/drivers)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/non_volatile_memory)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/serial)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/support)
RTEMS_CHECK_MAKEFILE(c/src/lib/libhwapi/wrapup)
else
AC_MSG_ERROR(No source code found for the HWAPI)
fi
;;
no) AC_MSG_RESULT(no) ;;
*) AC_MSG_ERROR(bad value ${enableval} for hwapi option) ;;
esac],
AC_MSG_RESULT(no)
)
AC_SUBST(RTEMS_BSP_LIST)
AC_SUBST(RTEMS_HOST)
AC_SUBST(RTEMS_LIBC_DIR)
AC_SUBST(RTEMS_USE_OWN_PDIR)
AC_SUBST(RTEMS_HAS_POSIX_API)
AC_SUBST(RTEMS_HAS_KA9Q)
AC_SUBST(RTEMS_USE_MACROS)
AC_SUBST(RTEMS_HAS_CPLUSPLUS)
AC_SUBST(RTEMS_USE_GCC272)
AC_SUBST(RTEMS_LIBC_DIR)
AC_SUBST(PROJECT_ROOT)
AC_SUBST(program_prefix)
# pick up all the Makefiles in required parts of the tree
RTEMS_CHECK_MAKEFILE(c/build-tools)
RTEMS_CHECK_MAKEFILE(make)
RTEMS_CHECK_MAKEFILE(c/src/lib/libmisc)
RTEMS_CHECK_MAKEFILE(c/src/tests/samples)
AC_CONFIG_HEADER(c/build-tools/src/config.h)
AC_CONFIG_HEADER(c/build-tools/src/config.h)
# try not to explicitly list a Makefile here
AC_OUTPUT(
Makefile
c/Makefile
c/src/Makefile
c/src/exec/Makefile
c/src/exec/score/Makefile
c/src/exec/score/cpu/Makefile
c/src/exec/score/headers/Makefile
c/src/exec/score/${inline_dir}/Makefile
c/src/exec/score/src/Makefile
c/src/exec/score/tools/Makefile
c/src/exec/score/tools/generic/Makefile
c/src/exec/score/tools/generic/size_rtems
c/src/exec/wrapup/Makefile
c/src/exec/wrapup/rtems/Makefile
c/src/lib/Makefile
c/src/lib/include/Makefile
c/src/lib/libbsp/Makefile
c/src/lib/libbsp/shmdr/Makefile
c/src/lib/libc/Makefile
c/src/lib/libcpu/Makefile
c/src/lib/start/Makefile
c/src/lib/wrapup/Makefile
c/src/tests/Makefile
c/src/tests/support/Makefile
c/src/tests/support/include/Makefile
c/src/tests/support/stubdr/Makefile
c/src/tests/support/wrapup/Makefile
c/src/tests/tools/Makefile
c/src/tests/tools/generic/Makefile
$makefiles
make/host.cfg
make/target.cfg
make/Templates/Makefile.inc
c/update-tools/Makefile)
echo
echo target architecture: $target_cpu.
echo available BSPs: $rtems_bsp.
echo \'make all\' will build the following BSPs: $RTEMS_BSP_LIST.
echo other BSPs can be built with \'make RTEMS_BSP=\"bsp1 bsp2 ...\"\'
echo
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