[lmi-commits] [lmi] odd/source_script_in_makefile 3d51d7b 1/3: Improve documentation

[Greg Chicares]

branch: odd/source_script_in_makefile
commit 3d51d7be0e7f9846e2ed145dd1a2a16bf393af68
Author: Gregory W. Chicares <address@hidden>
Commit: Gregory W. Chicares <address@hidden>

    Improve documentation
---
 parent.make | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/parent.make b/parent.make
index 4ac8d4d..b1d2c69 100644
--- a/parent.make
+++ b/parent.make
@@ -4,9 +4,10 @@
 #  - form a unique name $LMI_ENV_FILE for a file to hold the value
 #  - add a 'source_env_vars' prerequisite for the top-level makefile,
 #    with recipe "$(eval include $LMI_ENV_FILE)"
-#  - add a phony 'source_env_vars' target that sources the script,
-#    then writes 'make' assignments like "export foo := bar"
-#    for each desired environment variable
+#  - add a phony 'source_env_vars' target that sources the script
+#  - make the script write 'make' assignments like "export foo := bar"
+#    for each desired environment variable to $LMI_ENV_FILE iff that
+#    filename is of nonzero length
 # To test:
 #   $export LMI_IN=Russia;   make -f parent.make all
 #   $export LMI_IN=Mongolia; make -f parent.make all