[PATCH 3/5] prepend ccache wrappers in devshell

[Felix Moessbauer <felix.moessbauer@siemens.com>]

This fix prepends the ccache compiler wrappers also in the devshell.
By that, an invocation of a compiler in the devshell also profits from
ccache caching.

Prior to this patch, the build-tool (like meson) had to detect
if ccache is available and modify the invocation internally.
By prepending the ccache wrappers, ccache now works for all build
tools (and direct compiler invocations).

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 meta/classes/dpkg-base.bbclass | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
index ef04ef31..12d18592 100644
--- a/meta/classes/dpkg-base.bbclass
+++ b/meta/classes/dpkg-base.bbclass
@@ -311,6 +311,8 @@ python do_devshell() {
     isar_export_proxies(d)
     isar_export_ccache(d)
     isar_export_build_settings(d)
+    if d.getVar('USE_CCACHE') == '1':
+        bb.build.exec_func('schroot_configure_ccache', d)
 
     schroot = d.getVar('SBUILD_CHROOT')
     isar_apt = d.getVar('ISAR_APT_REPO')
@@ -328,6 +330,7 @@ python do_devshell() {
         echo {2} > /etc/apt/sources.list.d/isar_apt.list; \
         apt-get -y -q update; \
         {3}; \
+        export PATH=$PATH_PREPEND:$PATH; \
         $SHELL -i \
     '"
     oe_terminal(termcmd.format(schroot, pp_pps, isar_apt, install_deps), "Isar devshell", d)
-- 
2.30.2