5046 2013-08-23 17:43:29 +0000 Document that CPPFLAGS override behavior and possible workaround 2016-03-05 19:40:15 +0000 1 1 9 Documentation Reference handbook unspecified x86 Multiple RESOLVED FIXED Low enhancement 2.1 1 lpapp bluelightning bluelightning jessica.zhang poky.doc.watcher poky.watcher richard.purdie ross.burton srifenbark --- --- No (bug/feature does not impact docs) oldest_to_newest 35893 0 lpapp 2013-08-23 17:43:29 +0000 I am having a simple recipe that can be seen below. The software underneath is using Makefiles for the buildsystem. The problem is that the buildsystem is trying to use a statement like "CPPFLAGS = -I./", but this seems to be dropped. The problem is that the software will not build without having this include path in there. It is seems to be set inside the bitbake.conf file (i.e. 'env'). When '-e' is used, that CPPFLAGS in the software's Makefile will be ignored. First of all, I think this should be documented. Secondly, perhaps even a workaround, or rather: the solution should be suggested how to respect such things intentionally. Perhaps EXTRA_OEMAKE is the right way with CPPFLAGS=${CPPFLAGS}, but it is just a gut feeling as a complete newcomer anyhow. ;-) DESCRIPTION = "Foo" SECTION = "base" LICENSE = "Proprietary" LIC_FILES_CHKSUM = "file://${WORKDIR}/COPYRIGHT;md5=3c56ae9da467f3061406b9a5af9b277b" SRC_URI = "file://foo.tar.xz \ file://COPYRIGHT" do_compile() { oe_runmake -C foo } 35894 1 lpapp 2013-08-23 17:52:46 +0000 Hmm, no, EXTRA_OEMAKE = "'CFLAGS=${CFLAGS}' 'CPPFLAGS=${CPPFLAGS}'" did not help, unfortunately. How to get this buildsystem accept and respect the upstream software's build settings? I think there should be a documented way of doing so. 35900 2 srifenbark 2013-08-26 06:23:07 +0000 Adding some people to the CC list so I can get more information. Scott 35945 3 lpapp 2013-08-27 09:49:06 +0000 Scott, this seems to work below. Should it go to meta-skeleton rather than the documentation? ============== testcase_0.1.bb ================== DESCRIPTION = "Test case for a simple GNU Makefile" SECTION = "base" LICENSE = "GPLv2" LIC_FILES_CHKSUM = "file://${WORKDIR}/COPYRIGHT;md5=349c872e0066155e1818b786938876a4" S = "${WORKDIR}" SRC_URI = "file://main.cpp \ file://Makefile \ file://COPYRIGHT \ " do_compile() { unset CPPFLAGS oe_runmake } ============== main.cpp ================== int main() { return 0; } ============== Makefile ================== CC=gcc CPPFLAGS=-I. main: main.cpp $(CC) -o main main.cpp $(CPPFLAGS) .PHONY: clean clean: rm -f main *.o *~ 35995 4 lpapp 2013-08-28 14:28:40 +0000 Quick update: ... unset CPPFLAGS LDFLAGS ... LDFLAGS is the same topic because if the software tries to build against symbols found in another libraries, like pthread_join in libpthread, -lpthread must be respected by the openembedded buildsystem. Otherwise, the software build ends up in "Undefined reference ..." scenario for those symbols. 36045 5 jessica.zhang 2013-08-29 14:45:25 +0000 Scott, This may be included in the content that Paul will help with you for creating receipes for 1.6 Thanks, Jessica 36507 6 srifenbark 2013-09-10 22:29:57 +0000 Hi, Okay - I am changing the status to "ACCEPTED" and will get to this post 1.5. I will work with Paul to create a good section on creating recipes that will include helpful information such as this. Thanks, Scott 38391 7 srifenbark 2013-10-31 18:34:39 +0000 I am changing this to NEEDINFO. Waiting for information from Paul via email. 42081 8 srifenbark 2014-04-01 22:54:34 +0000 Enhancement - moving to 1.7 42502 9 lpapp 2014-04-10 09:31:45 +0000 Paul, feedback? 43725 10 srifenbark 2014-06-03 09:17:48 +0000 Setting to M3 as the 1.7 target. I will try to get Paul to help. Scott 43774 11 srifenbark 2014-06-04 15:54:29 +0000 Hi, Need some information from Paul on this. Assigning to Paul. Scott 43972 12 srifenbark 2014-06-16 09:17:57 +0000 Apparently I did not assign this correctly. Now it is assigned to Paul. 44377 13 srifenbark 2014-07-08 12:51:17 +0000 Not sure why the M3 milestone is not showing up. I am setting it (again). Still need to consult with Paul. Scott 45010 14 bluelightning 2014-08-07 15:05:01 +0000 So, I'm marking this as ACCEPTED rather than NEEDINFO since it is now assigned to me rather than Scott. 59711 15 bluelightning 2016-03-04 02:41:01 +0000 So as of the following commit, we no longer pass -e on the make command line, so this should no longer be a problem: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=f8520142c8a33fa9414314511fb01fbe79a2bf01 Marking as resolved accordingly. 59739 16 srifenbark 2016-03-05 19:40:15 +0000 Setting the Doc flag to "No". Soctt