configure: Add support for a --includedir option

[notmuch] / configure

diff --git a/configure b/configure
index a2998411dfe01611ac1ee14685146efe174e572f..a0746dfa6790fd70de361eb3e987558505096209 100755 (executable)
--- a/configure
+++ b/configure
@@ -67,7 +67,8 @@ specify an installation prefix other than $PREFIX using
 
 Fine tuning of some installation directories is available:
 
-       --libdir=DIR    Install libraries in LIBDIR [PREFIX/lib]
+       --libdir=DIR            Install libraries to DIR [PREFIX/lib]
+       --includedir=DIR        Install header files to DIR [PREFIX/include]
 
 Additional options are accepted for compatibility with other
 configure-script calling conventions, but don't do anything yet:
@@ -86,6 +87,8 @@ for option; do
        PREFIX="${option#*=}"
     elif [ "${option%%=*}" = '--libdir' ] ; then
        LIBDIR="${option#*=}"
+    elif [ "${option%%=*}" = '--includedir' ] ; then
+       INCLUDEDIR="${option#*=}"
     elif [ "${option%%=*}" = '--build' ] ; then
        build_option="${option#*=}"
        case ${build_option} in
@@ -324,9 +327,12 @@ WARN_CFLAGS=\$(WARN_CXXFLAGS) -Wmissing-declarations
 # The prefix to which notmuch should be installed
 prefix = ${PREFIX}
 
-# The directory to which notmuch libraries should be installed
+# The directory to which libraries should be installed
 libdir = ${LIBDIR:=\$(prefix)/lib}
 
+# The directory to which header files should be installed
+includedir = ${INCLUDEDIR:=\$(prefix)/lib}
+
 # The directory to which emacs lisp files should be installed
 emacs_lispdir=${emacs_lispdir}