notmuch-new: Only install SIGALRM if not running under gdb

I felt sorry for Carl trying to step through an exception from xapian
and suffering from the SIGALARMs..

We can detect if the user launched notmuch under a debugger by either
checking our cmdline for the presence of the gdb string or querying if
valgrind is controlling our process. For the latter we need to add a
compile time check for the valgrind development library, and so add the
initial support to build Makefile.config from configure.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Carl Worth <cworth@cworth.org>
[ickle: And do not install the timer when under the debugger]

1 files changed, 17 insertions, 4 deletions

diff --git a/configure b/configure
index fe46c8e3..b4770ec9 100755
--- a/configure
+++ b/configure
@@ -53,6 +53,14 @@ else
     errors=$((errors + 1))
 fi
 
+if pkg-config --modversion valgrind > /dev/null 2>&1; then
+    echo "Checking for valgrind development files... Yes."
+    have_valgrind=-DHAVE_VALGRIND
+else
+    echo "Checking for valgrind development files... No."
+    have_valgrind=
+fi
+
 if [ $errors -gt 0 ]; then
     cat <<EOF
 
@@ -108,7 +116,8 @@ configure again to ensure the packages can be found, or simply run
 
 EOF
     exit 1
-else
+fi
+
 cat <<EOF
 
 All required packages were found. You may now run the following
@@ -118,6 +127,10 @@ commands to compile and install notmuch:
 	sudo make install
 
 EOF
-    exit 0
-fi
-cat <<EOF
+
+# construct the Makefile.config
+cat > Makefile.config <<EOF
+prefix = /usr/local
+bash_completion_dir = /etc/bash_completion.d
+CFLAGS += ${have_valgrind}
+EOF