50 lines
2.5 KiB
Text
50 lines
2.5 KiB
Text
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* If NIX_DEBUG is turned on (set to "1"), autoconf configure scripts
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may fail to find the correct preprocessor:
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checking how to run the C preprocessor... /lib/cpp
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* When building gcc using a Nix gcc, generated libraries link against
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the libraries of the latter:
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$ ldd /nix/store/3b1d3995c4edbf026be5c73f66f69245-gcc-3.3.3/lib/libstdc++.so
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...
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libgcc_s.so.1 => /nix/store/1f19e61d1b7051f1131f78b41b2a0e7e-gcc-3.3.2/lib/libgcc_s.so.1 (0x400de000)
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(wrong! should be .../3b1d.../lib/libgcc_s...)
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...
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* Subtle problems can occur if the Nix store directory or one of its
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parents is a symlink. E.g., purity checks can barf:
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impure path `/data/nix/store/099cd9aee7d056a9922fd6dd116a3f5c-gcc-3.3.3/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.3.3/crtbegin.o' used in link
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(This happened because /nix was a symlink to /data/nix.) Maybe we
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should disallow this entirely, since, exactly because it is
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perfectly legal for a builder to expand a symlink, we can end up
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with derivates referring to paths that existed in the build
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environment but not in the target environment.
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Disallowing this can be highly inconvenient, since it makes it
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harder to move the Nix store to a different file system. (On Linux,
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`bind' mounts can help here.)
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* In libXt:
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/bin/sh ./libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I. -DXTHREADS -DXUSE_MTSAFE_API -I/nix/store/aadf0bd4a908da11d14f6538503b8408-libX11-6.2.1/include -I/nix/store/ba366e3b944ead64ec9b0490bb615874-xproto-6.6.1/include -I./include/X11 -g -O2 -c -o ActionHook.lo `test -f 'ActionHook.c' || echo './'`ActionHook.c
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mkdir .libs
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gcc -DHAVE_CONFIG_H -I. -I. -I. -DXTHREADS -DXUSE_MTSAFE_API -I/nix/store/aadf0bd4a908da11d14f6538503b8408-libX11-6.2.1/include -I/nix/store/ba366e3b944ead64ec9b0490bb615874-xproto-6.6.1/include -I./include/X11 -g -O2 -c ActionHook.c -fPIC -DPIC -o .libs/ActionHook.o
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In file included from IntrinsicI.h:55,
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from ActionHook.c:69:
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include/X11/IntrinsicP.h:54:27: X11/Intrinsic.h: No such file or directory
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* Then:
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gcc -DHAVE_CONFIG_H -I. -I. -I. -DXTHREADS -DXUSE_MTSAFE_API -I/nix/store/aadf0bd4a908da11d14f6538503b8408-libX11-6.2.1/include -I/nix/store/ba366e3b944ead64ec9b0490bb615874-xproto-6.6.1/include -I./include -I./include/X11 -g -O2 -c ActionHook.c -fPIC -DPIC -o .libs/ActionHook.o
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In file included from IntrinsicI.h:55,
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from ActionHook.c:69:
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include/X11/IntrinsicP.h:202:25: X11/ObjectP.h: No such file or directory
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(moved to include/X11; should edit include/Makefile.am)
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