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| # 13:04:55 | groton | hi all |
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| # 15:02:45 | groton | i tryed to install 1.12.1 but i am stuck at the configure step searching for 'libstdc++' on a linux/debian/wheezy system. Notice that i have installed libstdcxx6 (and -dev), but it says: A mandatory dependency is missing, or version mis-match: The 'libstdc++' library is needed to build gcc . Any hint? |
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| # 17:54:12 | y_morin | groton: hey! |
| # 17:56:25 | y_morin | groton: can you run: gcc -print-file-name=libstdc++.so |
| # 17:56:30 | y_morin | groton: and past the result? |
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| # 18:51:19 | snappy | So I created a cross compiler toolchain for the android (again), using uclibc. Trying to compile a simple hello world type program, and testing it on the android platform. |
| # 18:51:38 | snappy | I do something like: ./bin/arm-android-linux-uclibcgnueabi-gcc -Wl,-rpath-link=...,-dynamic-linker=/system/bin/linker -o hello hello.c -- and the platform says it cannot link to libc.so.0. |
| # 18:52:14 | snappy | hm, actually, nevermind, i guess i need to copy the libc. |
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| # 19:32:31 | groton | y_morin: gcc -print-file-name=libstdc++.so -> libstdc++.so |
| # 19:32:57 | y_morin | groton: that means that your native compiler can't find libstdc++.so |
| # 19:34:09 | groton | very strange, why is that? |
| # 19:34:54 | groton | y_morin: the compiler version is: gcc (Debian 4.6.1-4) 4.6.1 |
| # 19:35:02 | y_morin | groton: can you check: dpkg --get-selections |grep libstdc++ |
| # 19:35:50 | groton | y_morin: i guess the problem is that i do not have libstdc++6-4.6-dev installed, but only the ones for gcc4.4 and for gcc4.5 |
| # 19:36:19 | y_morin | groton: probably, yes. You have to have the libstdc++ for the compiler you are using. |
| # 19:36:49 | groton | what is the preferred gcc version? 4.5 or 4.6? |
| # 19:36:50 | y_morin | groton: crosstool-Ng is not ready to use a compiler that is not named 'gcc' |
| # 19:37:57 | y_morin | groton: if your 'gcc' report "(Debian 4.6.1-4) 4.6.1", then you have to install: |
| # 19:38:03 | y_morin | libstdc++6 |
| # 19:38:19 | groton | well, i actually have that package already installed |
| # 19:38:47 | y_morin | OK, I see the issue... |
| # 19:39:01 | y_morin | groton: give a few minutes so I can check something here... |
| # 19:39:02 | groton | http://nopaste.info/7d5e93117c.html |
| # 19:39:05 | groton | ok |
| # 19:41:35 | y_morin | groton: OK, I now better understand the issue: |
| # 19:43:52 | y_morin | groton: to check libstdc++ availability, we ask gcc, with: gcc -print-file-name=libstdc++.so |
| # 19:44:23 | y_morin | groton: the issue is, that 'libstdc++.so' is not available if the devel package is not installed. |
| # 19:45:42 | groton | y_morin: just to let you know, i have nor g++-4.6 nor libstdc++6-4.6-dev installed |
| # 19:46:22 | y_morin | groton: yes, the issue is that, even if libstdc++6 is installed, we don't find it. |
| # 19:46:30 | groton | ok |
| # 19:46:52 | y_morin | groton: ./configure is borked in this respect. |
| # 19:47:02 | y_morin | groton: workaround for now: install the -dev package. |
| # 19:47:19 | y_morin | groton: insbuild-essential, it pulls everything. |
| # 19:47:24 | y_morin | Ermmm. |
| # 19:47:35 | groton | y_morin: it worked now |
| # 19:47:37 | y_morin | groton: I meant: install built-essential, |
| # 19:48:00 | groton | i just installed g++-4.6 and libstdc++6-4.6 and at least the configuration step went just fine |
| # 19:48:33 | y_morin | groton: that's the way to work around the issue... |
| # 19:48:36 | y_morin | for now... |
| # 19:48:49 | groton | y_morin: many thanks for your work and your support also! I hope to stick with this tool chain builder for a long time :) |
| # 19:48:54 | y_morin | Cheer! |
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| # 20:15:21 | y_morin | groton: well, in fact, that's not really an issue. We *do* need to check for libstdc++.so because we will have to link with -lstdc++ at some point. |
| # 20:15:51 | y_morin | groton: so, even if the _runtime_ libstdc++ is iinstalled, ld would not find the library at link time. |
| # 20:16:17 | y_morin | groton: so the 'devel' package is always needed |
| # 20:17:31 | groton | y_morin: ok |
| # 20:21:52 | snappy | y_morin: do you know of a way to pull the correct information for march/mtune/etc. when constructing a toolchain from an existing system running Linux? I seem to be a bit lost with all the different ARM chipsets |
| # 20:22:19 | y_morin | snappy: cat /proc/cpuinfo |
| # 20:22:40 | y_morin | snappy: then, search wikipedia for the corresponding settings? ;-) |
| # 20:22:50 | y_morin | Hehe! :-) |
| # 20:22:59 | snappy | i'll give it a shot |
| # 20:23:01 | snappy | didnt think about that to be honest. |
| # 20:23:20 | y_morin | snappy: seriously now, /proc/cpuinfo should give you the answer |
| # 20:23:32 | y_morin | but you may have to translate that into gcc jargon. |
| # 20:23:42 | snappy | word |
| # 20:23:55 | y_morin | snappy: ? |
| # 20:23:57 | snappy | i think i got some info from a TI OMAP processor, and it didn't like the android emulator ARM chipset |
| # 20:24:06 | snappy | y_morin: "word" as in, "I acknowledge" :) |
| # 20:24:20 | y_morin | Ah, OK. |
| # 20:24:39 | y_morin | TI OMAP: probably cortex-a8, and armv7 |
| # 20:24:56 | y_morin | (which is tune, which is cpu, shich is arch, I don't recall.... man gcc) |
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| # 21:44:41 | y_morin | snappy: so, yes, I'd like to add llvm/clang to crosstool-NG, but I have to get up to speed with that. |
| # 21:44:56 | y_morin | snappy: I still did not get time to look at how it all fits together... |
| # 21:46:08 | y_morin | snappy: and last I discussed with the developpers, llvm/clang was not ready for generating a cross-compiler, IIRC. |
| # 21:47:53 | xvilka | snappy: which omap |
| # 21:48:02 | xvilka | i have exp. with them |
| # 21:48:16 | y_morin | xvilka: it's been resolved on the #uclibc channel |
| # 21:48:25 | xvilka | ah. ok. |
| # 21:48:34 | y_morin | xvilka: thanks! :-) |
| # 21:55:56 | snappy | xvilka: i think i emailed you (after looking at a post on android forums), sent me to the droid wiki |
| # 21:56:07 | snappy | taking your configs and trying to get them to work for the emulator. |
| # 21:56:40 | snappy | 1 |
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| # 23:35:34 | snappy | hm, is the mtune/mcpu stuff necessary? |
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