exec_cmd: provide a new-style RUNTIME_PREFIX helper for Windows

diff --git a/Makefile b/Makefile
index 44bad53231c13afcd922b77a70fc6e6a13277e02..154929f1c88e79e550c2d57f176ce2531f50e406 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -460,6 +460,10 @@ all::
 # When using RUNTIME_PREFIX, define HAVE_NS_GET_EXECUTABLE_PATH if your platform
 # supports calling _NSGetExecutablePath to retrieve the path of the running
 # executable.
+#
+# When using RUNTIME_PREFIX, define HAVE_WPGMPTR if your platform offers
+# the global variable _wpgmptr containing the absolute path of the current
+# executable (this is the case on Windows).
 
 GIT-VERSION-FILE: FORCE
        @$(SHELL_PATH) ./GIT-VERSION-GEN
@@ -1703,6 +1707,10 @@ ifdef HAVE_NS_GET_EXECUTABLE_PATH
        BASIC_CFLAGS += -DHAVE_NS_GET_EXECUTABLE_PATH
 endif
 
+ifdef HAVE_WPGMPTR
+       BASIC_CFLAGS += -DHAVE_WPGMPTR
+endif
+
 ifeq ($(TCLTK_PATH),)
 NO_TCLTK = NoThanks
 endif