src/bin/sage-src-env-config.in: New, sourced in src/bin/sage

.gitignore

@@ -130,6 +130,7 @@ src/*.egg-info/
 /src/build
 /src/Makefile
 /src/bin/sage-env-config
+/src/bin/sage-src-env-config
 
 # Virtual environments
 src/.env

configure.ac

@@ -393,7 +393,7 @@ SAGE_SPKG_COLLECT()
 
 dnl AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_FILES([build/make/Makefile-auto build/make/Makefile])
-AC_CONFIG_FILES([src/bin/sage-env-config build/bin/sage-build-env-config])
+AC_CONFIG_FILES([src/bin/sage-env-config src/bin/sage-src-env-config build/bin/sage-build-env-config])
 
 AC_CONFIG_FILES([build/pkgs/sage_conf/src/sage_conf.py build/pkgs/sage_conf/src/setup.cfg])
 

src/bin/sage

@@ -64,6 +64,10 @@ if [ -x "$0-config" ]; then
     export SAGE_ROOT=$("$0-config" SAGE_ROOT)
     export SAGE_LOCAL=$("$0-config" SAGE_LOCAL)
 fi
+if [ -f "$0-src-env-config" ]; then
+    # Not installed script, present only in src/bin/
+    . "$0-src-env-config" >&2
+fi
 if [ -x "$0-venv-config" ]; then
     # installed by setup.py
     export SAGE_VENV=$("$0-venv-config" SAGE_VENV)

src/bin/sage-src-env-config.in

@@ -0,0 +1,39 @@
+# -*- shell-script -*- @configure_input@
+
+###########################################################################
+#
+#  Set some environment variables that are needed at the runtime of Sage
+#  and by its child processes.
+#
+#  This file is only for use when sage is invoked from SAGE_ROOT.
+#  It is not installed in SAGE_LOCAL.
+#
+#  NOTES:
+#  - You must *source* this script instead of executing.
+#  - Use "return" instead of "exit" to signal a failure.  Since this
+#    file is sourced, an "exit" here will actually exit src/bin/sage,
+#    which is probably not intended.
+#  - Environment variables that should be available in the Sage environment
+#    should be exported.
+#  - This file is only for setting immediate values.  Any kind of conditionals
+#    or computed values are to be set by src/bin/sage-env after sourcing this
+#    file.
+#  - Environment variables that are only needed at the time of building
+#    SPKGs or sagelib should be set in build/bin/sage-build-env-config
+#    instead.
+#  - Configuration variables that are only needed by the Sage runtime,
+#    but not as environment variables, should instead be set in
+#    build/pkgs/sage_conf/src/sage_conf.py
+#
+##########################################################################
+
+# SAGE_LOCAL is the installation prefix and can be customized by using
+# ./configure --prefix
+export SAGE_LOCAL="@prefix@"
+
+# SAGE_VENV is the root of the virtual environment of sagelib.
+# Currently, it is identical to SAGE_LOCAL
+export SAGE_VENV="@prefix@"
+
+# SAGE_ROOT is the location of the Sage source/build tree.
+export SAGE_ROOT="@SAGE_ROOT@"