sinclude(../config/acinclude.m4)
dnl CYGNUS LOCAL: This gets the right posix flag for gcc
-AC_DEFUN(CY_AC_TCL_LYNX_POSIX,
+AC_DEFUN([CY_AC_TCL_LYNX_POSIX],
[AC_REQUIRE([AC_PROG_CC])AC_REQUIRE([AC_PROG_CPP])
AC_MSG_CHECKING([if running LynxOS])
AC_CACHE_VAL(ac_cv_os_lynx,
# makes configure think it's cross compiling. If --target wasn't used, then
# we can't configure, so something is wrong. We don't use the cache
# here cause if somebody fixes their compiler install, we want this to work.
-AC_DEFUN(CY_AC_C_WORKS,
+AC_DEFUN([CY_AC_C_WORKS],
[# If we cannot compile and link a trivial program, we can't expect anything to work
AC_MSG_CHECKING(whether the compiler ($CC) actually works)
AC_TRY_COMPILE(, [/* don't need anything here */],
AC_MSG_RESULT(yes)
])
-AC_DEFUN(CY_AC_PATH_TCLH, [
+AC_DEFUN([CY_AC_PATH_TCLH], [
#
# Ok, lets find the tcl source trees so we can use the headers
# Warning: transition of version 9 to 10 will break this algorithm
])
-AC_DEFUN(CY_AC_PATH_TCLCONFIG, [
+AC_DEFUN([CY_AC_PATH_TCLCONFIG], [
#
# Ok, lets find the tcl configuration
# First, look for one uninstalled.
# Defined as a separate macro so we don't have to cache the values
# from PATH_TCLCONFIG (because this can also be cached).
-AC_DEFUN(CY_AC_LOAD_TCLCONFIG, [
+AC_DEFUN([CY_AC_LOAD_TCLCONFIG], [
. $TCLCONFIG
AC_SUBST(TCL_VERSION)
# - Symbols in tkConfig.sh are different than tclConfig.sh
# - Acceptable for Tk to be missing but not Tcl.
-AC_DEFUN(CY_AC_PATH_TKH, [
+AC_DEFUN([CY_AC_PATH_TKH], [
#
# Ok, lets find the tk source trees so we can use the headers
# If the directory (presumably symlink) named "tk" exists, use that one
])
-AC_DEFUN(CY_AC_PATH_TKCONFIG, [
+AC_DEFUN([CY_AC_PATH_TKCONFIG], [
#
# Ok, lets find the tk configuration
# First, look for one uninstalled.
# Defined as a separate macro so we don't have to cache the values
# from PATH_TKCONFIG (because this can also be cached).
-AC_DEFUN(CY_AC_LOAD_TKCONFIG, [
+AC_DEFUN([CY_AC_LOAD_TKCONFIG], [
if test -f "$TKCONFIG" ; then
. $TKCONFIG
fi
# check for Itcl headers.
-AC_DEFUN(CY_AC_PATH_ITCLCONFIG, [
+AC_DEFUN([CY_AC_PATH_ITCLCONFIG], [
#
# Ok, lets find the itcl configuration
# First, look for one uninstalled.
# Defined as a separate macro so we don't have to cache the values
# from PATH_ITCLCONFIG (because this can also be cached).
-AC_DEFUN(CY_AC_LOAD_ITCLCONFIG, [
+AC_DEFUN([CY_AC_LOAD_ITCLCONFIG], [
if test -f "$ITCLCONFIG" ; then
. $ITCLCONFIG
fi
# check for Itcl headers.
-AC_DEFUN(CY_AC_PATH_ITCLH, [
+AC_DEFUN([CY_AC_PATH_ITCLH], [
AC_MSG_CHECKING(for Itcl private headers. srcdir=${srcdir})
if test x"${ac_cv_c_itclh}" = x ; then
for i in ${srcdir}/../itcl ${srcdir}/../../itcl ${srcdir}/../../../itcl ${srcdir}/../itcl/itcl; do
])
-AC_DEFUN(CY_AC_PATH_ITKCONFIG, [
+AC_DEFUN([CY_AC_PATH_ITKCONFIG], [
#
# Ok, lets find the itk configuration
# First, look for one uninstalled.
# Defined as a separate macro so we don't have to cache the values
# from PATH_ITKCONFIG (because this can also be cached).
-AC_DEFUN(CY_AC_LOAD_ITKCONFIG, [
+AC_DEFUN([CY_AC_LOAD_ITKCONFIG], [
if test -f "$ITKCONFIG" ; then
. $ITKCONFIG
fi
AC_SUBST(ITK_LIB_SPEC)
])
-AC_DEFUN(CY_AC_PATH_ITKH, [
+AC_DEFUN([CY_AC_PATH_ITKH], [
AC_MSG_CHECKING(for Itk private headers. srcdir=${srcdir})
if test x"${ac_cv_c_itkh}" = x ; then
for i in ${srcdir}/../itcl ${srcdir}/../../itcl ${srcdir}/../../../itcl ${srcdir}/../itcl/itk; do
AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
])
+dnl See whether we need a declaration for a function.
+dnl The result is highly dependent on the INCLUDES passed in, so make sure
+dnl to use a different cache variable name in this macro if it is invoked
+dnl in a different context somewhere else.
+dnl gcc_AC_CHECK_DECL(SYMBOL,
+dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
+AC_DEFUN([gcc_AC_CHECK_DECL],
+[AC_MSG_CHECKING([whether $1 is declared])
+AC_CACHE_VAL(gcc_cv_have_decl_$1,
+[AC_TRY_COMPILE([$4],
+[#ifndef $1
+char *(*pfn) = (char *(*)) $1 ;
+#endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
+if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
+ AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
+else
+ AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
+fi
+])dnl
+
+dnl Check multiple functions to see whether each needs a declaration.
+dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
+dnl gcc_AC_CHECK_DECLS(SYMBOLS,
+dnl [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
+AC_DEFUN([gcc_AC_CHECK_DECLS],
+[for ac_func in $1
+do
+changequote(, )dnl
+ ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+changequote([, ])dnl
+gcc_AC_CHECK_DECL($ac_func,
+ [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
+ [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
+dnl It is possible that the include files passed in here are local headers
+dnl which supply a backup declaration for the relevant prototype based on
+dnl the definition of (or lack of) the HAVE_DECL_ macro. If so, this test
+dnl will always return success. E.g. see libiberty.h's handling of
+dnl `basename'. To avoid this, we define the relevant HAVE_DECL_ macro to
+dnl 1 so that any local headers used do not provide their own prototype
+dnl during this test.
+#undef $ac_tr_decl
+#define $ac_tr_decl 1
+ $4
+)
+done
+dnl Automatically generate config.h entries via autoheader.
+if test x = y ; then
+ patsubst(translit([$1], [a-z], [A-Z]), [\w+],
+ [AC_DEFINE([HAVE_DECL_\&], 1,
+ [Define to 1 if we found this declaration otherwise define to 0.])])dnl
+fi
+])
+
# Add --enable-maintainer-mode option to configure.
# From Jim Meyering
projects / binutils-gdb.git / blobdiff