diff --git a/src/sage/config.py.in b/src/sage/config.py.in
index 60ebede7ac5..d2f835020e3 100644
--- a/src/sage/config.py.in
+++ b/src/sage/config.py.in
@@ -7,7 +7,7 @@ MESON_BUILD_ROOT = r"@MESON_BUILD_ROOT@"
 VERSION = "@PACKAGE_VERSION@"
 
 # The path to the standalone maxima executable.
-MAXIMA = "@SAGE_MAXIMA@"
+MAXIMA = "maxima -l ecl"
 
 # Set this to the empty string if your ECL can load maxima without
 # further prodding.
@@ -53,6 +53,15 @@ rankwidth_enabled = @RANKWIDTH_ENABLED@
 sirocco_enabled = @SIROCCO_ENABLED@
 tdlib_enabled = @TDLIB_ENABLED@
 
+# Some Gentoo definitions
+MATHJAX_DIR  = "@GENTOO_PORTAGE_EPREFIX@/usr/share/mathjax"
+SAGE_SHARE   = "@GENTOO_PORTAGE_EPREFIX@/usr/share/sage"
+SAGE_DOC     = "@GENTOO_PORTAGE_EPREFIX@/usr/share/doc/@GENTOO_PORTAGE_PF@"
+JMOL_DIR     = "@GENTOO_PORTAGE_EPREFIX@/usr/share/sage-jmol-bin/lib"
+MTXLIB       = "@GENTOO_PORTAGE_EPREFIX@/usr/share/meataxe"
+PPLPY_DOCS   = "@GENTOO_PORTAGE_EPREFIX@/usr/share/doc/@PPLY_DOC_VERS@/html"
+LIE_INFO_DIR = "@GENTOO_PORTAGE_EPREFIX@/usr/share/lie"
+
 
 def get_include_dirs():
     from sage.misc.superseded import deprecation