[Buildroot] [PATCH v2] pacakge/qt5/qt5base: fix build with ccache
Benoît Thébaudeau
benoit at wsystem.com
Fri Aug 28 09:46:51 UTC 2015
Building with ccache failed with:
Running configuration tests...
Failed to process makespec for platform 'devices/linux-buildroot-g++'
Project ERROR: Compiler <path_to_output_dir>/host/usr/bin/ccache <path_to_output_dir>/host/usr/bin/<cross_compile>-g++ not found. Check the value of CROSS_COMPILE -device-option
Could not read qmake configuration file <path_to_output_dir>/build/qt5base-5.5.0/mkspecs/devices/linux-buildroot-g++/qmake.conf.
Error processing project file: /dev/null
This was caused by Buildroot setting this in
qt5base-5.5.0/mkspecs/devices/linux-buildroot-g++/qmake.conf:
QMAKE_CXX = $${BR_CCACHE} $${CROSS_COMPILE}g++
But qt5base-5.5.0/mkspecs/features/device_config.prf expects QMAKE_CXX
to be a single valid (absolute or QMAKE_PATH_ENV-relative) path to an
existing file, which is not possible if using ccache as above.
Add a patch fixing this by testing only the first value in QMAKE_CXX.
Signed-off-by: Benoît Thébaudeau <benoit at wsystem.com>
---
Changes v1 -> v2:
- Use the first value in QMAKE_CXX instead of removing the whole test.
---
.../qt5/qt5base/0009-fix-build-with-ccache.patch | 49 ++++++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 package/qt5/qt5base/0009-fix-build-with-ccache.patch
diff --git a/package/qt5/qt5base/0009-fix-build-with-ccache.patch b/package/qt5/qt5base/0009-fix-build-with-ccache.patch
new file mode 100644
index 0000000..896c0ef
--- /dev/null
+++ b/package/qt5/qt5base/0009-fix-build-with-ccache.patch
@@ -0,0 +1,49 @@
+Fix QMAKE_CXX/CROSS_COMPILE verification with ccache
+
+The use of ccache leads to QMAKE_CXX definitions of the form:
+
+ QMAKE_CXX = $${CCACHE} $${CROSS_COMPILE}g++
+
+The previous test required QMAKE_CXX to be a single valid (absolute or
+QMAKE_PATH_ENV-relative) path to an existing file, which was not
+compatible with definitions of QMAKE_CXX like the one above.
+
+Fix this by using only the first value in QMAKE_CXX, which usually
+points to the compiler executable, or to the ccache executable in the
+above case.
+
+Signed-off-by: Benoît Thébaudeau <benoit at wsystem.com>
+---
+ mkspecs/features/device_config.prf | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/mkspecs/features/device_config.prf b/mkspecs/features/device_config.prf
+index cd3a0cf..eee4ac6 100644
+--- a/mkspecs/features/device_config.prf
++++ b/mkspecs/features/device_config.prf
+@@ -19,10 +19,15 @@ defineTest(deviceSanityCheckCompiler) {
+ else: \
+ sfx =
+
++ # Build the compiler filename using the first value in QMAKE_CXX in order to
++ # support tools like ccache, which give QMAKE_CXX values of the form:
++ # ccache <path_to_compiler>
++ compiler = $$first(QMAKE_CXX)$$sfx
++
+ # Check if the binary exists with an absolute path. Do this check
+ # before the CROSS_COMPILE empty check below to allow the mkspec
+ # to derive the compiler path from other device options.
+- exists($$QMAKE_CXX$$sfx):return()
++ exists($$compiler):return()
+
+ # Check for possible reasons of failure
+ # check if CROSS_COMPILE device-option is set
+@@ -31,7 +36,7 @@ defineTest(deviceSanityCheckCompiler) {
+ # Check if QMAKE_CXX points to an executable.
+ ensurePathEnv()
+ for (dir, QMAKE_PATH_ENV) {
+- exists($$dir/$${QMAKE_CXX}$$sfx): \
++ exists($$dir/$${compiler}): \
+ return()
+ }
+
--
2.1.4
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