configure: Look for both Xapian 1.1 and 1.0 and allow user override.

The in-development version of Xapian provides a config program named
xapian-config-1.1 while the released version provides a program named
xapian-config instead. By default, we now try each of these in turn,
and we also allow the user to set a XAPIAN_CONFIG environment variable
to explicitly specify a particular program.

diff --git a/configure b/configure
index fa8e142bb786e0450992abe823c6a9ee26bffb9e..d240b6acf8bda20b033e62ef1beda4c3cebe38d3 100755 (executable)
--- a/configure
+++ b/configure
@@ -6,6 +6,7 @@ CC=${CC:-gcc}
 CXX=${CXX:-g++}
 CFLAGS=${CFLAGS:--O2}
 CXXFLAGS=${CXXFLAGS:-\$(CFLAGS)}
 CXX=${CXX:-g++}
 CFLAGS=${CFLAGS:--O2}
 CXXFLAGS=${CXXFLAGS:-\$(CFLAGS)}

+XAPIAN_CONFIG=${XAPIAN_CONFIG:-xapian-config-1.1 xapian-config}

 
 # Set the defaults for values the user can specify with command-line
 # options.
 
 # Set the defaults for values the user can specify with command-line
 # options.


@@ -37,6 +38,13 @@ First, some common variables can specified via environment variables:
 Each of these values can further be controlled by specifying them
 later on the "make" command line.
 
 Each of these values can further be controlled by specifying them
 later on the "make" command line.
 

+Other environment variables can be used to control configure itself,
+(and for which there is no equivalent build-time control):
+
+       XAPIAN_CONFIG   The program to use to determine flags for
+                       compiling and linking against the Xapian
+                       library. [$XAPIAN_CONFIG]
+

 Additionally, various options can be specified on the configure
 command line.
 
 Additionally, various options can be specified on the configure
 command line.
 


@@ -97,14 +105,18 @@ else
 fi
 
 printf "Checking for Xapian development files... "
 fi
 
 printf "Checking for Xapian development files... "

-if xapian-config --version > /dev/null 2>&1; then
-    printf "Yes.\n"
-    have_xapian=1
-    xapian_cxxflags=$(xapian-config --cxxflags)
-    xapian_ldflags=$(xapian-config --libs)
-else
+have_xapian=0
+for xapian_config in ${XAPIAN_CONFIG}; do
+    if ${xapian_config} --version > /dev/null 2>&1; then
+       printf "Yes.\n"
+       have_xapian=1
+       xapian_cxxflags=$(${xapian_config} --cxxflags)
+       xapian_ldflags=$(${xapian_config} --libs)
+       break
+    fi
+done
+if [ ${have_xapian} = "0" ]; then

     printf "No.\n"
     printf "No.\n"

-    have_xapian=0

     errors=$((errors + 1))
 fi
 
     errors=$((errors + 1))
 fi