Merge bitcoin/bitcoin#25696: build: Re-enable external signer on Windows

1a0d8e178c7b9a3e94d14f94b77305802ebdc93b build: Re-enable external signer on Windows (Hennadii Stepanov)
989451d0689543b25ee6bf1d5b82c863d583597b configure: Detect compatibility of Boost.Process rather than hardcode non-Windows (Luke Dashjr)

Pull request description:

  As https://github.com/boostorg/process/issues/207 has been resolved, it is possible now to re-enable external signer on Windows when cross-compiling.

  Guix build hashes:
  ```
  78f69ea7e0dbc8338981a92c0352220ccd7c2272d8cbff6a3b082a1412a935c5  guix-build-1a0d8e178c7b/output/aarch64-linux-gnu/SHA256SUMS.part
  ee17456ec818ddf5a175182508966e622573ccb518807cca43a40fa1dceda092  guix-build-1a0d8e178c7b/output/aarch64-linux-gnu/bitcoin-1a0d8e178c7b-aarch64-linux-gnu-debug.tar.gz
  5080551bde379c746cc67b10429aef33b9f9e49d2d4e21ee1c3bfd9c1c845d46  guix-build-1a0d8e178c7b/output/aarch64-linux-gnu/bitcoin-1a0d8e178c7b-aarch64-linux-gnu.tar.gz
  dfab220ce76a40bf7dcf07aab352a616a91b516503639455fe7e1b137bad3e85  guix-build-1a0d8e178c7b/output/arm-linux-gnueabihf/SHA256SUMS.part
  516ceb822571a8bd88fe107dca434ef596b1e4328ccbda1d51e1d482d3050396  guix-build-1a0d8e178c7b/output/arm-linux-gnueabihf/bitcoin-1a0d8e178c7b-arm-linux-gnueabihf-debug.tar.gz
  21325380638f817107c203b9a1aedb808d1a4a2b4041493753ca4cbf19aa4f2c  guix-build-1a0d8e178c7b/output/arm-linux-gnueabihf/bitcoin-1a0d8e178c7b-arm-linux-gnueabihf.tar.gz
  cf48ed78fcfceaeb3610ccf22326d735a129dcbf9d50b557b3de359169aefdfd  guix-build-1a0d8e178c7b/output/arm64-apple-darwin/SHA256SUMS.part
  d4d51e136148bac6a20bb3adb402c499967647736acb420bfdeb71603aba57da  guix-build-1a0d8e178c7b/output/arm64-apple-darwin/bitcoin-1a0d8e178c7b-arm64-apple-darwin-unsigned.dmg
  95bb62d24f860e08a392ddb74d5860ccf27e8baa183e6749af877d26a3bd6b0b  guix-build-1a0d8e178c7b/output/arm64-apple-darwin/bitcoin-1a0d8e178c7b-arm64-apple-darwin-unsigned.tar.gz
  68da4c92f37bb802df37141af194f47c16da1d84f77a0fbb1016013ae0338502  guix-build-1a0d8e178c7b/output/arm64-apple-darwin/bitcoin-1a0d8e178c7b-arm64-apple-darwin.tar.gz
  6704e38c2d3f11321403797598d05f062648fec6f2d76900ba250dab481e29da  guix-build-1a0d8e178c7b/output/dist-archive/bitcoin-1a0d8e178c7b.tar.gz
  64b936bc90d1e01fe8f276511edc9bb945dcebe70332aa37d3a786348443b8e7  guix-build-1a0d8e178c7b/output/powerpc64-linux-gnu/SHA256SUMS.part
  3d03532e54b6e42498ea240c86b8567e94fd462f56087b869c3d6f09e2dde878  guix-build-1a0d8e178c7b/output/powerpc64-linux-gnu/bitcoin-1a0d8e178c7b-powerpc64-linux-gnu-debug.tar.gz
  c5843d79a58b0a864fe723458dab4eee54ad11f4b1f7960975b086eeedc0d541  guix-build-1a0d8e178c7b/output/powerpc64-linux-gnu/bitcoin-1a0d8e178c7b-powerpc64-linux-gnu.tar.gz
  f861ff519bd5e3d6d5ce1646ee0a06bcef1288ddb804a4a600e4dbfe5d5be521  guix-build-1a0d8e178c7b/output/powerpc64le-linux-gnu/SHA256SUMS.part
  5f477da21980dbcf9696081903dc1ba8a3f79ce3579641d208e69a6f598c8eb9  guix-build-1a0d8e178c7b/output/powerpc64le-linux-gnu/bitcoin-1a0d8e178c7b-powerpc64le-linux-gnu-debug.tar.gz
  b3757b11c614136934158acea5139e8abd0c5c9cdfda72ae44db436f21716b33  guix-build-1a0d8e178c7b/output/powerpc64le-linux-gnu/bitcoin-1a0d8e178c7b-powerpc64le-linux-gnu.tar.gz
  1c21bdb17fe3436e685e88c62423e630fe2b3c41dd00025a99fd80d97817ac2f  guix-build-1a0d8e178c7b/output/riscv64-linux-gnu/SHA256SUMS.part
  f36ae98473f086ae8f0dc66223b5ec407d57dc4d8d45ae284401520ff5c0b273  guix-build-1a0d8e178c7b/output/riscv64-linux-gnu/bitcoin-1a0d8e178c7b-riscv64-linux-gnu-debug.tar.gz
  1603e4d0e869eb47a1dc2d26b67772d0016d90f7ba5e50d2009365cc02cb8169  guix-build-1a0d8e178c7b/output/riscv64-linux-gnu/bitcoin-1a0d8e178c7b-riscv64-linux-gnu.tar.gz
  f86ef652102f022827b70477bffa0a44008c6300cf62ca7b3595146cf2ed91ba  guix-build-1a0d8e178c7b/output/x86_64-apple-darwin/SHA256SUMS.part
  f84d435d8e4709bf29bc7ac7ed8dc6b8af4077cef05e520b468b2896ce10876a  guix-build-1a0d8e178c7b/output/x86_64-apple-darwin/bitcoin-1a0d8e178c7b-x86_64-apple-darwin-unsigned.dmg
  af2aab969b7ed7aeea0e02adbcc9e3b438086bf76b6bfc36146c53e05a27bd57  guix-build-1a0d8e178c7b/output/x86_64-apple-darwin/bitcoin-1a0d8e178c7b-x86_64-apple-darwin-unsigned.tar.gz
  32a5109ba28ab74ff66238e6a8f8a04e455ebce382a3be287df92a227818fe72  guix-build-1a0d8e178c7b/output/x86_64-apple-darwin/bitcoin-1a0d8e178c7b-x86_64-apple-darwin.tar.gz
  377462e9a96f4aba72c915dd5df5159a4301a1fa8ed0ee48faa6c71573de80c3  guix-build-1a0d8e178c7b/output/x86_64-linux-gnu/SHA256SUMS.part
  a3bf62e828d2350a483b2d16205014f66e8884597b0b72e178042a958c548336  guix-build-1a0d8e178c7b/output/x86_64-linux-gnu/bitcoin-1a0d8e178c7b-x86_64-linux-gnu-debug.tar.gz
  66cda980188ea1941a7d66c8b03c447580af33db55abe3bbe3581823ae0534a3  guix-build-1a0d8e178c7b/output/x86_64-linux-gnu/bitcoin-1a0d8e178c7b-x86_64-linux-gnu.tar.gz
  2117f0dd9baeb4d585f841592e94c088f4487bf2008b8f281d0c3ceee92ff6cc  guix-build-1a0d8e178c7b/output/x86_64-w64-mingw32/SHA256SUMS.part
  d40d5dec3287f467c42232c05d82f7fb538cda34bd2e63ff7e1876f471c3a790  guix-build-1a0d8e178c7b/output/x86_64-w64-mingw32/bitcoin-1a0d8e178c7b-win64-debug.zip
  92dcc92765fbc07b1cc8258bfa69280541e1b4553cc41fed18672c2c6931d5c0  guix-build-1a0d8e178c7b/output/x86_64-w64-mingw32/bitcoin-1a0d8e178c7b-win64-setup-unsigned.exe
  a6dd9b4d29f21d3a18cf64556cb03446ef17bf801eb6ac257b65d27cbd95080f  guix-build-1a0d8e178c7b/output/x86_64-w64-mingw32/bitcoin-1a0d8e178c7b-win64-unsigned.tar.gz
  a4022e595d955198f73530473ef8e90a708746089ee2dd27de794176873330c1  guix-build-1a0d8e178c7b/output/x86_64-w64-mingw32/bitcoin-1a0d8e178c7b-win64.zip
  ```

ACKs for top commit:
  Sjors:
    tACK 1a0d8e178c7b9a3e94d14f94b77305802ebdc93b
  achow101:
    ACK 1a0d8e178c7b9a3e94d14f94b77305802ebdc93b

Tree-SHA512: db7319259b1e1571cfab4bb3b99ae10a2f744e62757cae5059fd6f4dd6d5586eb09feb63a0c4bb07f7128b283f1dc281ed435224bc8e40da577fd4f04cde489a

1 files changed, 39 insertions, 39 deletions

diff --git a/configure.ac b/configure.ac
index 5f09c8a5b6..cbe3dbcf19 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1492,45 +1492,45 @@ if test "$use_boost" = "yes"; then
 fi
 
 if test "$use_external_signer" != "no"; then
-  case $host in
-    *mingw*)
-      dnl Boost Process uses Boost Filesystem when targeting Windows. Also,
-      dnl since Boost 1.71.0, Process does not work with mingw-w64 without
-      dnl workarounds. See 67669ab425b52a2b6be3d2f3b3b7e3939b676a2c.
-      if test "$use_external_signer" = "yes"; then
-        AC_MSG_ERROR([External signing is not supported on Windows])
-      fi
-      use_external_signer="no";
-    ;;
-    *)
-      AC_MSG_CHECKING([whether Boost.Process can be used])
-      TEMP_CXXFLAGS="$CXXFLAGS"
-      dnl Boost 1.78 requires the following workaround.
-      dnl See: https://github.com/boostorg/process/issues/235
-      CXXFLAGS="$CXXFLAGS -Wno-error=narrowing"
-      TEMP_CPPFLAGS="$CPPFLAGS"
-      CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
-      TEMP_LDFLAGS="$LDFLAGS"
-      dnl Boost 1.73 and older require the following workaround.
-      LDFLAGS="$LDFLAGS $PTHREAD_CFLAGS"
-      AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <boost/process.hpp>]])],
-        [have_boost_process="yes"],
-        [have_boost_process="no"])
-      LDFLAGS="$TEMP_LDFLAGS"
-      CPPFLAGS="$TEMP_CPPFLAGS"
-      CXXFLAGS="$TEMP_CXXFLAGS"
-      AC_MSG_RESULT([$have_boost_process])
-      if test "$have_boost_process" = "yes"; then
-        use_external_signer="yes"
-        AC_DEFINE([ENABLE_EXTERNAL_SIGNER], [1], [Define if external signer support is enabled])
-      else
-        if test "$use_external_signer" = "yes"; then
-          AC_MSG_ERROR([External signing is not supported for this Boost version])
-        fi
-        use_external_signer="no";
-      fi
-    ;;
-  esac
+  AC_MSG_CHECKING([whether Boost.Process can be used])
+  TEMP_CXXFLAGS="$CXXFLAGS"
+  dnl Boost 1.78 requires the following workaround.
+  dnl See: https://github.com/boostorg/process/issues/235
+  CXXFLAGS="$CXXFLAGS -Wno-error=narrowing"
+  TEMP_CPPFLAGS="$CPPFLAGS"
+  CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+  TEMP_LDFLAGS="$LDFLAGS"
+  dnl Boost 1.73 and older require the following workaround.
+  LDFLAGS="$LDFLAGS $PTHREAD_CFLAGS"
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+    #define BOOST_PROCESS_USE_STD_FS
+    #include <boost/process.hpp>
+  ]],[[
+    namespace bp = boost::process;
+    bp::opstream stdin_stream;
+    bp::ipstream stdout_stream;
+    bp::child c("dummy", bp::std_out > stdout_stream, bp::std_err > stdout_stream, bp::std_in < stdin_stream);
+    stdin_stream << std::string{"test"} << std::endl;
+    if (c.running()) c.terminate();
+    c.wait();
+    c.exit_code();
+  ]])],
+    [have_boost_process="yes"],
+    [have_boost_process="no"])
+  LDFLAGS="$TEMP_LDFLAGS"
+  CPPFLAGS="$TEMP_CPPFLAGS"
+  CXXFLAGS="$TEMP_CXXFLAGS"
+  AC_MSG_RESULT([$have_boost_process])
+  if test "$have_boost_process" = "yes"; then
+    use_external_signer="yes"
+    AC_DEFINE([ENABLE_EXTERNAL_SIGNER], [1], [Define if external signer support is enabled])
+    AC_DEFINE([BOOST_PROCESS_USE_STD_FS], [1], [Defined to avoid Boost::Process trying to use Boost Filesystem])
+  else
+    if test "$use_external_signer" = "yes"; then
+      AC_MSG_ERROR([External signing is not supported for this Boost version])
+    fi
+    use_external_signer="no";
+  fi
 fi
 AM_CONDITIONAL([ENABLE_EXTERNAL_SIGNER], [test "$use_external_signer" = "yes"])