Change dir_ctrl to check for the environment variable before using the default

[openssl.git] / Makefile.org

diff --git a/Makefile.org b/Makefile.org
index b78a82ec9309849dc0c90ba6dc95f7d2837b4981..3dba4a1a28313e5f8d0b4bb9da8483c5e17e3237 100644 (file)
--- a/Makefile.org
+++ b/Makefile.org
@@ -149,10 +149,11 @@ HEADER=         e_os.h
 all: Makefile build_all openssl.pc
 
 # as we stick to -e, CLEARENV ensures that local variables in lower
-# Makefiles remain local and variable. $${var+var} is tribute to Korn
-# shell, which [annoyingly enough] terminates unset with error if var
-# is not set:-(
-CLEARENV=      unset $${TOP+TOP} $${LIB+LIB} $${LIBS+LIBS}     \
+# Makefiles remain local and variable. $${VAR+VAR} is tribute to Korn
+# shell, which [annoyingly enough] terminates unset with error if VAR
+# is not present:-( TOP= && unset TOP is tribute to HP-UX /bin/sh,
+# which terminates unset with error if no variable was present:-(
+CLEARENV=      TOP= && unset TOP $${LIB+LIB} $${LIBS+LIBS}     \
                $${INCLUDE+INCLUDE} $${INCLUDES+INCLUDES}       \
                $${DIR+DIR} $${DIRS+DIRS} $${SRC+SRC}           \
                $${LIBSRC+LIBSRC} $${LIBOBJ+LIBOBJ} $${ALL+ALL} \