Source: src:ns3 Version: 3.30+dfsg-3.1 Severity: serious Tag: ftbfs Tag: help Hello, I'm the maintainer of this package. I'm opening this bug to discuss the issue with whom may be interested, and keep track of the discussion. The package is currently trying to enter testing to fix 2 (easy) RC bugs, but fails to do so because builds fail on mipsel with the following message: ------------------------------ as: out of memory allocating 17107680 bytes after a total of 567459840 bytes /tmp/cc23jwIU.s: Assembler messages: /tmp/cc23jwIU.s: Fatal error: can't close /<<PKGBUILDDIR>>/ns-3.30/build- shared/src/lte/bindings/ns3module.cc.7.o: memory exhausted ------------------------------ I tried to reduce the memory consumption with the following chunks in debian/rules: ------------------------------ ifeq ($(DEB_HOST_GNU_CPU),mipsel) # Drop the debug symbols all together on mipsel to avoid OOM causing FTBFS export DEB_CFLAGS_MAINT_STRIP=-g export DEB_CXXFLAGS_MAINT_STRIP=-g endif LDFLAGS+=-Wl,--as-needed # Define CFLAGS and friends to harden the build -- must come any addition to these variables DPKG_EXPORT_BUILDFLAGS = 1 include /usr/share/dpkg/buildflags.mk ifeq ($(DEB_HOST_GNU_CPU),mipsel) # Further reduce the memory consumption on mipsel LDFLAGS += -Wl,--reduce-memory-overheads -Wl,--no-keep-memory endif ------------------------------- The version that failed on the buildd servers does not have these changes, but I tested it on the porterbox. I manually inspected the command-line parameters passed to the parser, and it seem to be all right. Compiling without -g and linking with the reduce-memory-overheads (unless I'm wrong). But this is not sufficient: I get exactly the same error message. In addition, I don't think that this is a real bug of as. ns-3 is a very large library, and upstream is not paying a lot of effort on reducing its size or optimizing the linking phase. I don't have any idea of how to fix it myself. I guess that I should ask for the removal of the mipsel version of this package, but I'm not entirely sure. I'd love to have ns-3 building on every platform, even if I'm certain that nobody will ever try to use it on this platform. This is a rather inefficient simulator used in science. Users will more probably deploy it to a fast compute server. But still, if possible, being compilable on mipsel too would be healthy for the software, if I could. Any help or advice is really really welcomed. Everything is in the salsa repository. Thanks, Mt -- Vae Soli.
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