rename got_commit_graph_iter_start() to got_commit_graph_bfsort() This function begins a breadth-first traversal. The new name makes it easier to distinguish from got_commit_graph_toposort().

portable: configure: split out dependencies Rather than assume all dependencies are required for all programs, split them out. This will make packaging easier, as well as splitting the code to use subprojects. Note that due to the use of config.h semantics, in most cases the got_compat.h header file is now at the top of the .c file it is included in, so that it can handle the system header inclusion properly.

portable: rework SHA detection Simply the SHA detection by not predicating on libcrypto, but instead checking individual header files.

portable: remove sha1.h; found portably Remove sha1.h as this is found portably across systems.

include sha2.h too where sha1.h is included In preparation for wide sha256 support; stsp@ agrees. Change done mechanically with find . -iname \*.[cy] -exec sam {} + X ,x/<sha1\.h>/i/\n#include <sha2.h>

make got_commit_graph_iter_next use caller-provided storage for the id and adjust the callers. discussed with and ok stsp@

plug leak in the commit graph iterator We fail to release the memory for the nodes. To fix it however, we some consumer of the commit graph iterator need to be corrected: the returned pointer is safe to be used only up until the next iter_next call; save a copy it if it's needed afterwards too. ok stsp@

remove trailing whitespace; patch by Josiah Frentsos

portable: add back sys/queue.h Now that the handling of including sys/queue.h is better, there's no need to remove those lines from the source. Copy the location of those original sys/queue.h lines from upstream at the same line number, so as to avoid any conflicts in the future.

switch 'tog diff' and 'tog blame' to Myers diff for speed Make the choice of diff algorithm configurable by diff API users. The got and gotweb programs keep using Patience diffs which are prettier than Myers. But tog should be as fast as possible since it is being used interactively. If performance of Patience diff gets improved later we can consider switching tog back over to it. ok tracey jamsek

move remaining got_opentemp's out of blame. ok op@

move got_opentempfd out of blame_open ok stsp@ jrick@

move got_opentempfd out of open_blob. ok stsp@

inline struct got_object_id in struct got_object_qid Saves us from doing a malloc/free call for every item on the list. ok op@

pass an already open commit object to the blame callback ok op@

stop relying on commit cache for good performance of got_object_id_by_path() Instead of internally opening and closing the same commit object over and over again, require callers to pass an open commit object in. Avoids an inherent dependency on the commit object cache for reasonable performance. ok op@

remove unused variables to fix LLVM 13 warnings; ok stsp

portable: add FreeBSD support This adds the capability to compile got-portable on FreeBSD.

portable: initial Linux compilation This commit modifies the GoT main branch to be able to compile it under linux.

switch from SIMPLEQ to equivalent STAILQ macros The singly-linked tail queue macros were added to OpenBSD 6.9 and are more widely available on other systems. ok stsp

make fclose(3) failure checks consistent; check 'fclose() == EOF' everywhere ok millert, naddy

fix a typo that triggered "munmap: Invalid argument" in got blame on FreeBSD ok stsp

remove redundant lines of code from close_file2_and_reuse_file1()

handle binary files in blame's custom file diff atomizer

implement custom atomizer for blame to reuse data and mappings across commits