On 6/21/2015 05:08, LRN wrote: > On 20.06.2015 19:21, Edward Diener wrote: >> On 6/20/2015 10:50 AM, LRN wrote: >>> On 20.06.2015 17:43, Edward Diener wrote: >>>> Why does mingw-64, or the original mingw for that matter, consistently >>>> hardcode include and lib search paths in their build for c:\mingw >>>> instead of searching for include files and libraries relative to its >>>> installation structure ? >>> >>> This is a side-effect of the way gcc is built. It's possible to mitigate >>> this by >>> 1) Cross-compiling gcc (instead of compiling it on Windows) from Cygwin or >>> a GNU system >>> 2) Patching gcc to throw away include and lib paths that start with '/' >>> when running on Windows. >>> >>> If not cross-compiled, gcc will have an absolute DOS path in its search >>> list (this is mitigated by building it in a randomly-named staging >>> directory deep in the temp tree to ensure that this has near-zero >>> probability of acting up in real life); some people settle for that. >> >> Thanks for the info. I guess the question then is why gcc is built in >> such backwards ( to this programmer ) way. Hardcoding absolute paths, in >> programing circa the year 2015, seems abolutely lunacy. But I don't >> expect an answer to why gcc works the way it does on this mailing list. > > gcc has a POSIX-centric (and complex) buildsystem. Hardcoding sysroot paths > is not considered a deadly sin there. >
Furthermore, GCC typically comes with a distro's package manager (which is expected to install to a fixed location) or built from source (with the sysroot derived from the configure arguments). Neither has any issues with hardcoded paths. Only on Windows do you typically need to have precompiled copies installed based on the user's preferences.
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