Revert "Revert "appease adequate with some weak symbols for -private""

This reverts commit 7ac9386cb6e272625490fcf3e8183b45e28bbc43.

3 files changed, 8 insertions, 2 deletions

diff --git a/apt-pkg/contrib/macros.h b/apt-pkg/contrib/macros.h
index 68406f4d8..2727fd81f 100644
--- a/apt-pkg/contrib/macros.h
+++ b/apt-pkg/contrib/macros.h
@@ -77,6 +77,7 @@
 	#define APT_PURE	__attribute__((pure))
 	#define APT_NORETURN	__attribute__((noreturn))
 	#define APT_PRINTF(n)	__attribute__((format(printf, n, n + 1)))
+	#define APT_WEAK        __attribute__((weak));
 #else
 	#define APT_DEPRECATED
 	#define APT_DEPRECATED_MSG
@@ -84,6 +85,7 @@
 	#define APT_PURE
 	#define APT_NORETURN
 	#define APT_PRINTF(n)
+	#define APT_WEAK
 #endif
 
 #if APT_GCC_VERSION > 0x0302
diff --git a/apt-private/private-cmndline.cc b/apt-private/private-cmndline.cc
index 4231c4f0e..9c5eae470 100644
--- a/apt-private/private-cmndline.cc
+++ b/apt-private/private-cmndline.cc
@@ -514,3 +514,7 @@ unsigned short DispatchCommandLine(CommandLine &CmdL, std::vector<CommandLine::D
    return Errors == true ? 100 : 0;
 }
 									/*}}}*/
+
+// weak symbols
+bool ShowHelp(CommandLine &) { return false; }
+std::vector<aptDispatchWithHelp> GetCommands() { return {}; }
diff --git a/apt-private/private-cmndline.h b/apt-private/private-cmndline.h
index 819eb77cc..4819adce1 100644
--- a/apt-private/private-cmndline.h
+++ b/apt-private/private-cmndline.h
@@ -23,14 +23,14 @@ enum class APT_CMD {
    APT_SORTPKG,
 };
 
-bool ShowHelp(CommandLine &CmdL);
+APT_PUBLIC bool ShowHelp(CommandLine &CmdL) APT_WEAK;
 struct aptDispatchWithHelp
 {
    const char *Match;
    bool (*Handler)(CommandLine &);
    const char *Help;
 };
-std::vector<aptDispatchWithHelp> GetCommands();
+APT_PUBLIC std::vector<aptDispatchWithHelp> GetCommands() APT_WEAK;
 
 APT_PUBLIC std::vector<CommandLine::Dispatch> ParseCommandLine(CommandLine &CmdL, APT_CMD const Binary,
       Configuration * const * const Cnf, pkgSystem ** const Sys, int const argc, const char * argv[]);