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# Software notes
This document lists some software known to build successfully, and any
special procedures necessary.
## sbase
Builds without issue as of [ef9f6f35].
[ef9f6f35]: https://git.suckless.org/sbase/commit/ef9f6f359a0762b738302ae05822514d72b70450.html
## binutils
QBE must be built with `NPred` (in `all.h`) at least 297.
On glibc systems, you must make sure to include `crtbegin.o` and
`crtend.o` from gcc at the end of `startfiles` and beginning of `endfiles`
respectively.
On musl systems, you must define `long double` to match `double` to
avoid errors in unused `static inline` functions in musl's `math.h`.
Requires several patches available here:
https://github.com/michaelforney/binutils-gdb/
- Fix function pointer subtraction in `bfd/doc/chew.c` (applied upstream).
- Skip unsupported `LDFLAGS`, only tested to work against `CXX` by
configure, but applied to `CC` as well.
- Disable `long double` support in `_bfd_doprnt`.
- Alter some ifdefs to avoid statement expressions and VLAs.
- Implement `pex_unix_exec_child` with `posix_spawn` instead of `vfork`
and subtle `volatile` usage.
- Make `regcomp` and `regexec` match the header declaration in usage of
`restrict`.
- Don't declare `vasprintf` unless it was checked for and not
found. Several subdirectories in binutils include `libiberty.h`,
but don't use `vasprintf`, causing conflicting declarations with libc
in usage of `restrict`.
- Make sure `config.h` is included in `arlex.c` so that the appropriate
feature-test macros get defined to expose `strdup`.
Configure with
./configure CC=/path/to/cc CFLAGS_FOR_BUILD=-D_GNU_SOURCE \
--disable-intl --disable-gdb --disable-plugins --disable-readline
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