Yes. This allows invalid options to be overridden, e.g. RccExtraLinkOptions+= --some-fancy-option-that-old-gcc-does-not-support RccExtraLinkOptions_linux-c6-x86_64+= If they had been concatenated, the flag would still be present on the command line and could cause problems. ________________________________ From: Miller, Peter <PeterM@signalscape.com> Sent: Monday, July 16, 2018 2:42:13 PM To: Marasco, Aaron; Banks, David; discuss@lists.opencpi.org Subject: RE: Ocpidev show make command line I see it now. So for centos7 + arm it should be (could be): RccExtraLinkOptions+=-lm -lpcap -lnl-genl-3 -lnl-3 RccExtraLinkOptions_linux-x13_3-arm+=$( RccExtraLinkOptions ) -L/opt/arm/lib Sincerely, Peter B. Miller Potomac: (301) 765-9668 From: Marasco, Aaron <aaron.marasco@bia-boeing.com> Sent: Monday, July 16, 2018 2:34 PM To: Miller, Peter <PeterM@signalscape.com>; Banks, David <david.banks@bia-boeing.com>; discuss@lists.opencpi.org Subject: Re: Ocpidev show make command line Hi Peter, Sorry for the confusion, but this is intentional and documented. The idea is that it will find the most restrictive and fall back from there. Since you explicitly said "linux-x13_3-arm" it will use only those settings. It will use the other one for all other platforms. See Section 9.1 (Building RCC Workers::RCC Compiler and Linking Options) in http://opencpi.github.io/OpenCPI_RCC_Development.pdf for more information, including the recommended way to include one within another. Aaron ________________________________ From: discuss <discuss-bounces@lists.opencpi.org<mailto:discuss-bounces@lists.opencpi.org>> on behalf of Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com>> Sent: Monday, July 16, 2018 10:18:47 AM To: Banks, David; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org> Subject: Re: [Discuss OpenCPI] Ocpidev show make command line Follow-follow up. Seem to need to specify OS and target uniquely for all if you specify for any. This works to build for centos7 and for ARM: RccExtraLinkOptions_linux-c7-x86_64+=-lm -lpcap -lnl-genl-3 -lnl-3 RccExtraLinkOptions_linux-x13_3-arm+=-L/opt/arm/lib -lm -lpcap -lnl-genl-3 -lnl-3 This does not: RccExtraLinkOptions+=-lm -lpcap -lnl-genl-3 -lnl-3 RccExtraLinkOptions_linux-x13_3-arm+=-L/opt/arm/lib Sincerely, Peter B. Miller Potomac: (301) 765-9668 -----Original Message----- From: Miller, Peter Sent: Monday, July 16, 2018 10:07 AM To: Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com>>; Banks, David <david.banks@bia-boeing.com<mailto:david.banks@bia-boeing.com>>; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org> Subject: RE: Ocpidev show make command line Following up, this seems to work: RccExtraLinkOptions_linux-x13_3-arm+= Sincerely, Peter B. Miller Potomac: (301) 765-9668 -----Original Message----- From: discuss <discuss-bounces@lists.opencpi.org<mailto:discuss-bounces@lists.opencpi.org>> On Behalf Of Miller, Peter Sent: Monday, July 16, 2018 10:05 AM To: Banks, David <david.banks@bia-boeing.com<mailto:david.banks@bia-boeing.com>>; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org> Subject: Re: [Discuss OpenCPI] Ocpidev show make command line Trying to modify application Makefile to support Centos7 and Xilinx3_13 uniquely: RccExtraLinkOptions+=-lm -lpcap -lnl-genl-3 -lnl-3 RccExtraLinkOptionsCC_linux-x13_3-arm+=-L/opt/arm/lib This doesn't work. How do I properly form the RccExtraLinkOptions to restrict to arm gcc? Sincerely, Peter B. Miller Potomac: (301) 765-9668 From: Banks, David <david.banks@bia-boeing.com<mailto:david.banks@bia-boeing.com>> Sent: Friday, July 06, 2018 9:24 AM To: Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com>>; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org> Subject: Re: Ocpidev show make command line Peter, I personally do not have experience with those warnings. For xilinx13_3, you can do: make RccPlatform=xilinx13_3 AT= -David ________________________________ From: Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com<mailto:PeterM@signalscape.com%3cmailto:PeterM@signalscape.com>>> Sent: Friday, July 6, 2018 9:17:00 AM To: Banks, David; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org%3cmailto:discuss@lists.opencpi.org>> Subject: RE: Ocpidev show make command line Dave, Thanks! This is great for centos7 builds. How do you do it for xilinx13_3? Also, any experience/guidance with these warnings: cc1: warning: include location "/usr/include/libnl3" is unsafe for cross-compilation [-Wpoison-system-directories] cc1: warning: include location "/usr/include" is unsafe for cross-compilation [-Wpoison-system-directories] From: Banks, David <david.banks@bia-boeing.com<mailto:david.banks@bia-boeing.com<mailto:david.banks@bia-boeing.com%3cmailto:david.banks@bia-boeing.com>>> Sent: Tuesday, July 03, 2018 12:21 PM To: Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com<mailto:PeterM@signalscape.com%3cmailto:PeterM@signalscape.com>>>; discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org%3cmailto:discuss@lists.opencpi.org>> Subject: Re: Ocpidev show make command line Peter, Unfortunately, there is no way to do this with ocpidev in 1.3.1. Support for this is on the radar for future releases. For now, you can resort to using "make": cd <application-directory>; make AT= I hope this helps! ________________________________ From: discuss <discuss-bounces@lists.opencpi.org<mailto:discuss-bounces@lists.opencpi.org<mailto:discuss-bounces@lists.opencpi.org%3cmailto:discuss-bounces@lists.opencpi.org>>> on behalf of Miller, Peter <PeterM@signalscape.com<mailto:PeterM@signalscape.com<mailto:PeterM@signalscape.com%3cmailto:PeterM@signalscape.com>>> Sent: Tuesday, July 3, 2018 11:26:53 AM To: discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org<mailto:discuss@lists.opencpi.org%3cmailto:discuss@lists.opencpi.org>> Subject: [Discuss OpenCPI] Ocpidev show make command line Please remind me again how to display/print the compiler/linker command line output for "ocpidev build application" in AV1.3.1? Sincerely, Peter B. 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