lang/python/python3/patches/131-configure_ac-switch-PLATFORM_TRIPLET-suffix-to-musl.patch

   1 From 15d512cc35106392ed7583d0e000d9a1b865f1e1 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?=C5=A0imon=20Bo=C5=99ek?= <simon.borek@nic.cz>
   3 Date: Mon, 27 Jun 2022 13:53:37 +0200
   4 Subject: [PATCH 2/2] configure.ac: switch PLATFORM_TRIPLET suffix to '-musl'
   5  based on `host_os` instead of `build_os`
   6
   7 As `build_os` and `host_os` are results of autoconf's `AC_CANONICAL_BUILD`
   8 and `AC_CANONICAL_HOST` macros[^1], the former refers to the system running the build
   9 and the latter to the system that will run the compiled program.
  10
  11 `PLATFORM_TRIPLET` should refer to the target platform when cross-compiling.
  12 Its libc related part should be therefore derived from the target platform as well
  13 - which is currently not the case - `PLATFORM_TRIPLET` '-gnu' suffix is/isn't switched to '-musl'
  14 based on `build-os` rather than `host-os` which leads to error message[^2]
  15 and build failure when compiling Python on glibc system for musl target.
  16
  17 [^1]: https://www.gnu.org/software/autoconf/manual/autoconf-2.68/html_node/Canonicalizing.html ,
  18 https://www.gnu.org/software/autoconf/manual/autoconf-2.68/html_node/Specifying-Target-Triplets.html
  19 [^2]: "internal configure error for the platform triplet, please file a bug report"
  20
  21 Co-authored-by: Pali Rohár <pali@kernel.org>
  22 Signed-off-by: Šimon Bořek <simon.borek@nic.cz>
  23 ---
  24  configure    | 2 +-
  25  configure.ac | 2 +-
  26  2 files changed, 2 insertions(+), 2 deletions(-)
  27
  28 --- a/configure
  29 +++ b/configure
  30 @@ -6186,7 +6186,7 @@ EOF
  31
  32  if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
  33    PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d '       '`
  34 -  case "$build_os" in
  35 +  case "$host_os" in
  36    linux-musl*)
  37      PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'`
  38      ;;
  39 --- a/configure.ac
  40 +++ b/configure.ac
  41 @@ -1081,7 +1081,7 @@ EOF
  42
  43  if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
  44    PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d '       '`
  45 -  case "$build_os" in
  46 +  case "$host_os" in
  47    linux-musl*)
  48      PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'`
  49      ;;