configure: SC2006: Use $(..) instead of legacy `..`

[notmuch] / configure

diff --git a/configure b/configure
index a79f6bd5e2efb531a519b27ebbad75c622db7c09..0c6cdb01bbe0132b38b5809950a6ee4d1786708b 100755 (executable)
--- a/configure
+++ b/configure
@@ -51,7 +51,7 @@ CPPFLAGS=${CPPFLAGS:-}
 CXXFLAGS_for_sh=${CXXFLAGS:-${CFLAGS}}
 CXXFLAGS=${CXXFLAGS:-\$(CFLAGS)}
 LDFLAGS=${LDFLAGS:-}
-XAPIAN_CONFIG=${XAPIAN_CONFIG:-xapian-config}
+XAPIAN_CONFIG=${XAPIAN_CONFIG:-}
 PYTHON=${PYTHON:-}
 
 # We don't allow the EMACS or GZIP Makefile variables inherit values
@@ -250,7 +250,7 @@ if [ -z "$LIBDIR" ] ; then
     libdir_expanded="${PREFIX}/lib"
 else
     # very non-general variable expansion
-    libdir_expanded=`echo "$LIBDIR" | sed "s|\\${prefix}|${PREFIX}|g; s|\\$prefix/|${PREFIX}/|; s|//*|/|g"`
+    libdir_expanded=$(echo "$LIBDIR" | sed "s|\\${prefix}|${PREFIX}|g; s|\\$prefix/|${PREFIX}/|; s|//*|/|g")
 fi
 
 cat <<EOF
@@ -341,7 +341,7 @@ fi
 
 printf "Checking for Xapian development files... "
 have_xapian=0
-for xapian_config in ${XAPIAN_CONFIG}; do
+for xapian_config in ${XAPIAN_CONFIG} xapian-config xapian-config-1.3; do
     if ${xapian_config} --version > /dev/null 2>&1; then
        xapian_version=$(${xapian_config} --version | sed -e 's/.* //')
        printf "Yes (%s).\n" ${xapian_version}
@@ -371,7 +371,25 @@ if [ ${have_xapian} = "1" ]; then
     esac
 fi
 
-
+default_xapian_backend=""
+if [ ${have_xapian} = "1" ]; then
+    printf "Testing default Xapian backend... "
+    cat >_default_backend.cc <<EOF
+#include <xapian.h>
+int main(int argc, char** argv) {
+   Xapian::WritableDatabase db("test.db",Xapian::DB_CREATE_OR_OPEN);
+}
+EOF
+    ${CXX} ${CXXLAGS} ${xapian_cxxflags} _default_backend.cc -o _default_backend ${xapian_ldflags}
+    ./_default_backend
+    if [ -f test.db/iamglass ]; then
+       default_xapian_backend=glass
+    else
+       default_xapian_backend=chert
+    fi
+    printf "${default_xapian_backend}\n";
+    rm -rf test.db _default_backend _default_backend.cc
+fi
 # we need to have a version >= 2.6.5 to avoid a crypto bug. We need
 # 2.6.7 for permissive "From " header handling.
 GMIME_MINVER=2.6.7
@@ -524,7 +542,7 @@ fi
 libdir_in_ldconfig=0
 
 printf "Checking which platform we are on... "
-uname=`uname`
+uname=$(uname)
 if [ $uname = "Darwin" ] ; then
     printf "Mac OS X.\n"
     platform=MACOSX
@@ -1001,6 +1019,9 @@ LINKER_RESOLVES_LIBRARY_DEPENDENCIES = ${linker_resolves_library_dependencies}
 XAPIAN_CXXFLAGS = ${xapian_cxxflags}
 XAPIAN_LDFLAGS = ${xapian_ldflags}
 
+# Which backend will Xapian use by default?
+DEFAULT_XAPIAN_BACKEND = ${default_xapian_backend}
+
 # Flags needed to compile and link against GMime
 GMIME_CFLAGS = ${gmime_cflags}
 GMIME_LDFLAGS = ${gmime_ldflags}
@@ -1077,6 +1098,9 @@ cat > sh.config <<EOF
 # Whether the Xapian version in use supports compaction
 NOTMUCH_HAVE_XAPIAN_COMPACT=${have_xapian_compact}
 
+# Which backend will Xapian use by default?
+NOTMUCH_DEFAULT_XAPIAN_BACKEND=${default_xapian_backend}
+
 # do we have man pages?
 NOTMUCH_HAVE_MAN=$((have_sphinx))