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Merge #17663: build: pass -dead_strip_dylibs to ld on macOS

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bd44711e1bb2eee7646f2f8e2e8763d1c216bdb9 build: pass -dead_strip_dylibs to ld on macOS (fanquake)

Pull request description:

  This strips some unused dylibs from bitcoin-qt.

  ```diff
  otool -L src/qt/bitcoin-qt
    /usr/lib/libSystem.B.dylib
  - /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
    /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
    /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
    /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
    /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
    /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
    /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
  -/System/Library/Frameworks/Security.framework/Versions/A/Security
    /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
    /System/Library/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
    /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
  -/System/Library/Frameworks/AGL.framework/Versions/A/AGL
    /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
    /usr/lib/libc++.1.dylib
    /System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
    /System/Library/Frameworks/CoreText.framework/Versions/A/CoreText
    /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
    /usr/lib/libobjc.A.dylib
  ```

  `AGL` - ObjC wrapper for OpenGL.
  `DiskArbitration` - mount/unmount notifications and events.
  `Security` - low level security operations, authentication services.

  From `man ld`:
  ```
  Remove dylibs that are unreachable by the entry point or exported symbols.
  That is, suppresses the generation of load command commands for dylibs
  which supplied no symbols during the link. This option should not be
  used when linking against a dylib which is required at runtime for
  some indirect reason such as the dylib has an important initializer.
  ```

ACKs for top commit:
  theuni:
    ACK bd44711e1bb2eee7646f2f8e2e8763d1c216bdb9.

Tree-SHA512: 9592ce2966d28cb6c58e01efd401f56a4baa5dc5be5313f4fe8454632b578608be65a23c8602772049cd4655a9cb020fdd40d6622a244c301920d8c3db43f99a
This commit is contained in:
Wladimir J. van der Laan 2019-12-06 09:11:08 +01:00 committed by pasta
parent 5ba4b29671
commit 5a5cfe514c
1 changed files with 1 additions and 0 deletions
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1
configure.ac
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@ -825,6 +825,7 @@ fi
dnl this flag screws up non-darwin gcc even when the check fails. special-case it.
if test x$TARGET_OS = xdarwin; then
AX_CHECK_LINK_FLAG([[-Wl,-dead_strip]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip"])
AX_CHECK_LINK_FLAG([[-Wl,-dead_strip_dylibs]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip_dylibs"])
fi
AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])