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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [prog-cc.m4] - Blame information for rev 798

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dnl
dnl $Id: prog-cc.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
dnl
dnl Check for target gcc
dnl
dnl 98/05/20 Ralf Corsepius     (corsepiu@faw.uni-ulm.de)
dnl                             Completely reworked
 
AC_DEFUN(RTEMS_PROG_CC,
[
AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_BEFORE([$0], [AC_PROG_CC])dnl
AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl
AC_REQUIRE([RTEMS_TOOL_PREFIX])dnl
AC_REQUIRE([RTEMS_ENABLE_LIBCDIR])dnl
 
dnl Only accept gcc and cc
dnl NOTE: This might be too restrictive for native compilation
AC_PATH_PROGS(CC_FOR_TARGET, "$program_prefix"gcc "$program_prefix"cc )
test -z "$CC_FOR_TARGET" \
  && AC_MSG_ERROR([no acceptable cc found in \$PATH])
 
dnl backup
rtems_save_CC=$CC
rtems_save_CFLAGS=$CFLAGS
 
dnl temporarily set CC
CC=$CC_FOR_TARGET
 
AC_PROG_CC_WORKS
AC_PROG_CC_GNU
 
if test $ac_cv_prog_gcc = yes; then
  GCC=yes
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
  ac_test_CFLAGS="${CFLAGS+set}"
  ac_save_CFLAGS="$CFLAGS"
  CFLAGS=
  AC_PROG_CC_G
  if test "$ac_test_CFLAGS" = set; then
    CFLAGS="$ac_save_CFLAGS"
  elif test $ac_cv_prog_cc_g = yes; then
    CFLAGS="-g -O2"
  else
    CFLAGS="-O2"
  fi
else
  GCC=
  test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
 
rtems_cv_prog_gcc=$ac_cv_prog_gcc
rtems_cv_prog_cc_g=$ac_cv_prog_cc_g
rtems_cv_prog_cc_works=$ac_cv_prog_cc_works
rtems_cv_prog_cc_cross=$ac_cv_prog_cc_cross
 
dnl restore initial values
CC=$rtems_save_CC
CFLAGS=$rtems_save_CFLAGS
 
unset ac_cv_prog_gcc
unset ac_cv_prog_cc_g
unset ac_cv_prog_cc_works
unset ac_cv_prog_cc_cross
])
 
AC_DEFUN(RTEMS_PROG_CC_FOR_TARGET,
[
dnl check target cc
RTEMS_PROG_CC
dnl check if the compiler supports --specs
RTEMS_GCC_SPECS
dnl check if the target compiler may use --pipe
RTEMS_GCC_PIPE
dnl check if the compiler supports --specs if gcc28 is requested
if test "$RTEMS_USE_GCC272" != "yes" ; then
  if test "$rtems_cv_gcc_specs" = "no"; then
    AC_MSG_WARN([*** disabling --enable-gcc28])
      RTEMS_USE_GCC272=yes
  fi
fi
test "$rtems_cv_gcc_pipe" = "yes" && CC_FOR_TARGET="$CC_FOR_TARGET --pipe"
 
dnl FIXME: HACK for egcs/cygwin mixing '\\' and '/' in gcc -print-*
case $host_os in
*cygwin*)     GCCSED="| sed 's%\\\\%/%g'" ;;
*) ;;
esac
AC_SUBST(GCCSED)
])

Line No.	Rev	Author	Line
1	30	unneback	`dnl`
2			`dnl $Id: prog-cc.m4,v 1.2 2001-09-27 11:59:11 chris Exp $`
3			`dnl`
4			`dnl Check for target gcc`
5			`dnl`
6			`dnl 98/05/20 Ralf Corsepius (corsepiu@faw.uni-ulm.de)`
7			`dnl Completely reworked`
8
9			`AC_DEFUN(RTEMS_PROG_CC,`
10			`[`
11			`AC_BEFORE([$0], [AC_PROG_CPP])dnl`
12			`AC_BEFORE([$0], [AC_PROG_CC])dnl`
13			`AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl`
14			`AC_REQUIRE([RTEMS_TOOL_PREFIX])dnl`
15			`AC_REQUIRE([RTEMS_ENABLE_LIBCDIR])dnl`
16
17			`dnl Only accept gcc and cc`
18			`dnl NOTE: This might be too restrictive for native compilation`
19			`AC_PATH_PROGS(CC_FOR_TARGET, "$program_prefix"gcc "$program_prefix"cc )`
20			`test -z "$CC_FOR_TARGET" \`
21			`&& AC_MSG_ERROR([no acceptable cc found in \$PATH])`
22
23			`dnl backup`
24			`rtems_save_CC=$CC`
25			`rtems_save_CFLAGS=$CFLAGS`
26
27			`dnl temporarily set CC`
28			`CC=$CC_FOR_TARGET`
29
30			`AC_PROG_CC_WORKS`
31			`AC_PROG_CC_GNU`
32
33			`if test $ac_cv_prog_gcc = yes; then`
34			`GCC=yes`
35			`dnl Check whether -g works, even if CFLAGS is set, in case the package`
36			`dnl plays around with CFLAGS (such as to build both debugging and`
37			`dnl normal versions of a library), tasteless as that idea is.`
38			`ac_test_CFLAGS="${CFLAGS+set}"`
39			`ac_save_CFLAGS="$CFLAGS"`
40			`CFLAGS=`
41			`AC_PROG_CC_G`
42			`if test "$ac_test_CFLAGS" = set; then`
43			`CFLAGS="$ac_save_CFLAGS"`
44			`elif test $ac_cv_prog_cc_g = yes; then`
45			`CFLAGS="-g -O2"`
46			`else`
47			`CFLAGS="-O2"`
48			`fi`
49			`else`
50			`GCC=`
51			`test "${CFLAGS+set}" = set \|\| CFLAGS="-g"`
52			`fi`
53
54			`rtems_cv_prog_gcc=$ac_cv_prog_gcc`
55			`rtems_cv_prog_cc_g=$ac_cv_prog_cc_g`
56			`rtems_cv_prog_cc_works=$ac_cv_prog_cc_works`
57			`rtems_cv_prog_cc_cross=$ac_cv_prog_cc_cross`
58
59			`dnl restore initial values`
60			`CC=$rtems_save_CC`
61			`CFLAGS=$rtems_save_CFLAGS`
62
63			`unset ac_cv_prog_gcc`
64			`unset ac_cv_prog_cc_g`
65			`unset ac_cv_prog_cc_works`
66			`unset ac_cv_prog_cc_cross`
67			`])`
68
69			`AC_DEFUN(RTEMS_PROG_CC_FOR_TARGET,`
70			`[`
71			`dnl check target cc`
72			`RTEMS_PROG_CC`
73			`dnl check if the compiler supports --specs`
74			`RTEMS_GCC_SPECS`
75			`dnl check if the target compiler may use --pipe`
76			`RTEMS_GCC_PIPE`
77			`dnl check if the compiler supports --specs if gcc28 is requested`
78			`if test "$RTEMS_USE_GCC272" != "yes" ; then`
79			`if test "$rtems_cv_gcc_specs" = "no"; then`
80			`AC_MSG_WARN([*** disabling --enable-gcc28])`
81			`RTEMS_USE_GCC272=yes`
82			`fi`
83			`fi`
84			`test "$rtems_cv_gcc_pipe" = "yes" && CC_FOR_TARGET="$CC_FOR_TARGET --pipe"`
85
86			`dnl FIXME: HACK for egcs/cygwin mixing '\\' and '/' in gcc -print-*`
87			`case $host_os in`
88			`cygwin) GCCSED="\| sed 's%\\\\%/%g'" ;;`
89			`*) ;;`
90			`esac`
91			`AC_SUBST(GCCSED)`
92			`])`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [prog-cc.m4] - Blame information for rev 798