shithub: opusfile

Set the autoconf version from git. AC_INIT requires that the version string passed in be 'static' so we can't use the output of a shell invocation. However, it can be computed by an m4 shell invocation. This is what autoconf itself does to embed its git version number in PACKAGE_VERSION. Doing this necessitates the 'echo -n' in git-version.sh. Make is smart enough to strip the trailing newline, but AC_INIT is not. We must also add -f to autoreconf. Otherwise, autogen.sh will only update configure when configure.ac changes, even if the output of git-version.sh has changed. This is still not ideal, since it runs at autogen.sh time, not at 'make' time, which is what we want. This seems to be a limitation of an upcoming automake release, which removes the old style with PACKAGE and VERSION set by shell variables.

--- a/autogen.sh

+++ b/autogen.sh

@@ -13,4 +13,4 @@

 cd "$srcdir"

 echo "Updating build configuration files for $package, please wait...."

-autoreconf -is

+autoreconf -isf

--- a/configure.ac

+++ b/configure.ac

@@ -1,4 +1,6 @@

-AC_INIT([opusfile], [0.0])

+# autoconf source script for generating configure

+AC_INIT([opusfile], m4_esyscmd([doc/git-version.sh]))

 AC_USE_SYSTEM_EXTENSIONS

 AC_SYS_LARGEFILE

--- a/doc/git-version.sh

+++ b/doc/git-version.sh

@@ -9,4 +9,4 @@

   VERSION=${GIT_VERSION}

fi

-echo ${VERSION}

+echo -n ${VERSION}