91 lines
2.4 KiB
Plaintext
91 lines
2.4 KiB
Plaintext
dnl
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dnl This ugly hack is needed because the Cygnus configure script won't
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dnl tell us what CC is going to be, and "cc" isn't always right. (The
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dnl top-level Makefile will always override anything we choose here, so
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dnl the usual gcc/cc selection is useless.)
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dnl
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dnl It knows where it is in the tree; don't try using it elsewhere.
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dnl
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undefine([AC_PROG_CC])dnl
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AC_DEFUN(AC_PROG_CC,
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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dnl
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dnl The ugly bit...
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dnl
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AC_MSG_CHECKING([for CC])
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dnl Don't bother with cache.
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test -z "$CC" && CC=`egrep '^CC *=' ../Makefile | tail -1 | sed 's/^CC *= *//'`
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test -z "$CC" && CC=cc
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AC_MSG_RESULT(setting CC to $CC)
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AC_SUBST(CC)
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dnl
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dnl
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# Find out if we are using GNU C, under whatever name.
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cat > conftest.c <<EOF
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#ifdef __GNUC__
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yes
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#endif
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EOF
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${CC-cc} -E conftest.c > conftest.out 2>&1
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if egrep yes conftest.out >/dev/null 2>&1; then
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GCC=yes
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else
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GCC=
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fi
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rm -f conftest*
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])dnl
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dnl
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dnl GAS_CHECK_DECL_NEEDED(name, typedefname, typedef, headers)
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AC_DEFUN(GAS_CHECK_DECL_NEEDED,[
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AC_MSG_CHECKING(whether declaration is required for $1)
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AC_CACHE_VAL(gas_cv_decl_needed_$1,
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AC_TRY_LINK([$4],
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[
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typedef $3;
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$2 x;
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x = ($2) $1;
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], gas_cv_decl_needed_$1=no, gas_cv_decl_needed_$1=yes))dnl
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AC_MSG_RESULT($gas_cv_decl_needed_$1)
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test $gas_cv_decl_needed_$1 = no || {
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ifelse(index($1,[$]),-1,
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[AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]))],
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[gas_decl_name_upcase=`echo $1 | tr '[a-z]' '[A-Z]'`
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AC_DEFINE_UNQUOTED(NEED_DECLARATION_$gas_decl_name_upcase)])
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}
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])dnl
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dnl
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dnl Some non-ANSI preprocessors botch requoting inside strings. That's bad
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dnl enough, but on some of those systems, the assert macro relies on requoting
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dnl working properly!
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dnl GAS_WORKING_ASSERT
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AC_DEFUN(GAS_WORKING_ASSERT,
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[AC_MSG_CHECKING([for working assert macro])
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AC_CACHE_VAL(gas_cv_assert_ok,
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AC_TRY_LINK([#include <assert.h>
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#include <stdio.h>], [
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/* check for requoting problems */
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static int a, b, c, d;
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static char *s;
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assert (!strcmp(s, "foo bar baz quux"));
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/* check for newline handling */
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assert (a == b
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|| c == d);
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], gas_cv_assert_ok=yes, gas_cv_assert_ok=no))dnl
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AC_MSG_RESULT($gas_cv_assert_ok)
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test $gas_cv_assert_ok = yes || AC_DEFINE(BROKEN_ASSERT)
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])dnl
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dnl
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dnl GAS_GDBINIT
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dnl Generates a .gdbinit file in the build directory pointing gdb to
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dnl srcdir, if srcdir != PWD.
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AC_DEFUN(GAS_GDBINIT,
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[if test `cd $srcdir;pwd` = `pwd` ; then
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rm -f .gdbinit
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cat > .gdbinit << EOF
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dir $srcdir
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dir .
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source $srcdir/.gdbinit
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EOF
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fi
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])dnl
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