missing m4

[m6w6/ext-psi] / m4 / psi_decl.m4

diff --git a/m4/psi_decl.m4 b/m4/psi_decl.m4
index 3bc2558d593cbf60cc23a121c29cff6a71ef64bb..92da2929816947da13d3fa7eb7c35a1380bb0794 100644 (file)
--- a/m4/psi_decl.m4
+++ b/m4/psi_decl.m4
@@ -1,6 +1,30 @@
-AC_DEFUN(PSI_REDIR, [psi_symbol=ifelse([$2],[],[$1],[$2])
-       PSI_REDIRS="{\"$1\", (void(*)(void))$psi_symbol}, $PSI_REDIRS"])
+# psi_add_redir(name, symbol)
+# Add a function redirection to $PSI_REDIRS.
+psi_add_redir() {
+       cat >>$PSI_REDIRS <<<"  {\"$1\", (void(*)(void))$2}, "
+}
 
+# psi_add_decl(decl, options)
+# Add a pre-defined decl to $PSI_VA_DECLS/$PSI_DECLS.
+psi_add_decl() {
+       case "$2" in
+       *vararg*)
+               cat >>$PSI_VA_DECLS <<<"        $1, {0}, "
+               ;;
+       *)
+               cat >>$PSI_DECLS <<<"   $1, {0}, "
+               ;;
+       esac
+}
+
+dnl PSI_REDIR(name, custom symbol)
+dnl Create a function redirection to an optional custom symbol.
+AC_DEFUN(PSI_REDIR, [
+       psi_add_redir $1 ifelse([$2],[],[$1],[$2])
+])
+
+dnl PSI_FUNC_LIBC_MAIN()
+dnl Check for the platforms default stub in executables.
 AC_DEFUN(PSI_FUNC_LIBC_MAIN, [
        AC_REQUIRE([AC_PROG_NM])
        AC_REQUIRE([AC_PROG_AWK])
@@ -14,6 +38,7 @@ AC_DEFUN(PSI_FUNC_LIBC_MAIN, [
 ])
 
 dnl PSI_FUNC(fn, action-if-yes, action-if-no)
+dnl Check for a possible function redirection.
 AC_DEFUN(PSI_FUNC, [
        AC_REQUIRE([PSI_FUNC_LIBC_MAIN])
        psi_symbol=$1
@@ -40,6 +65,8 @@ AC_DEFUN(PSI_FUNC, [
        esac
 ])
 
+dnl PSI_DECL_ARG(decl arg)
+dnl INTERNAL: build psi_decl_args
 AC_DEFUN(PSI_DECL_ARG, [
     m4_define([member_name], PSI_VAR_NAME($1))
     m4_define([member_type], PSI_VAR_TYPE($1))
@@ -51,7 +78,10 @@ AC_DEFUN(PSI_DECL_ARG, [
     psi_decl_args="[$psi_decl_args{]PSI_TYPE_PAIR(member_type)[, \"]member_name[\",] $pl, $as[}]"
 ])
 
-dnl PSI_DECL(type func, args)
+dnl PSI_DECL(type func, args, flags)
+dnl Check for a function or macro declaration.
+dnl Adds a pre-defined (vararg) decl to $PSI_VA_DECLS/$PSI_DECLS.
+dnl Calls PSI_MACRO if PSI_FUNC fails. 
 AC_DEFUN(PSI_DECL, [
        psi_decl_args=
        PSI_DECL_ARG($1)
@@ -60,10 +90,14 @@ AC_DEFUN(PSI_DECL, [
                [()], [],
                [m4_map_args_sep([PSI_DECL_ARG(m4_normalize(], [))], [], m4_bregexp([$2], [(\(.*\))], [\1]))])
        PSI_FUNC(PSI_VAR_NAME($1), [
-               PSI_DECLS="$psi_decl_args, {0}, $PSI_DECLS"
+               psi_add_decl "$psi_decl_args" $3
        ], [
                PSI_MACRO($1, $2, [
-                       PSI_DECLS="$psi_decl_args, {0}, $PSI_DECLS"
+                       ifelse([$3], vararg, [
+                               AC_MSG_ERROR(varargs macro support is not implemented)
+                       ],[
+                               psi_add_decl "$psi_decl_args"
+                       ])
                ])
        ])
 ])