From 88fc2b892c61f6ef57decc55abe03ec6734f27ec Mon Sep 17 00:00:00 2001
From: Ileana Dumitrescu <ileanadumitrescu95@gmail.com>
Date: Mon, 8 Apr 2024 22:34:19 +0300
Subject: [PATCH] libtool: Remove test_compile

This is cleanup for libtool. The option test_compile is not used in
libtool, and the documentation states that it would probably be dropped
in the future.

* build-aux/ltmain.in: Remove case statement for test_compile.
* doc/libtool.texi: Remove test_compile from documentation.
* m4/libtool.m4: Remove test_compile definition from macro file.
---
 build-aux/ltmain.in | 102 --------------------------------------------
 doc/libtool.texi    |   7 ---
 m4/libtool.m4       |   1 -
 3 files changed, 110 deletions(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index c1d28856c..090a4fe8a 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -7314,108 +7314,6 @@ func_mode_link ()
 	  # implementing what was already the behavior.
 	  newdeplibs=$deplibs
 	  ;;
-	test_compile)
-	  # This code stresses the "libraries are programs" paradigm to its
-	  # limits. Maybe even breaks it.  We compile a program, linking it
-	  # against the deplibs as a proxy for the library.  Then we can check
-	  # whether they linked in statically or dynamically with ldd.
-	  $opt_dry_run || $RM conftest.c
-	  cat > conftest.c <<EOF
-	  int main() { return 0; }
-EOF
-	  $opt_dry_run || $RM conftest
-	  if $LTCC $LTCFLAGS -o conftest conftest.c $deplibs; then
-	    ldd_output=`ldd conftest`
-	    for i in $deplibs; do
-	      case $i in
-	      -l*)
-		func_stripname -l '' "$i"
-		name=$func_stripname_result
-		if test yes = "$allow_libtool_libs_with_static_runtimes"; then
-		  case " $predeps $postdeps " in
-		  *" $i "*)
-		    func_append newdeplibs " $i"
-		    i=
-		    ;;
-		  esac
-		fi
-		if test -n "$i"; then
-		  libname=`eval "\\$ECHO \"$libname_spec\""`
-		  deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
-		  set dummy $deplib_matches; shift
-		  deplib_match=$1
-		  if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0; then
-		    func_append newdeplibs " $i"
-		  else
-		    droppeddeps=yes
-		    echo
-		    $ECHO "*** Warning: dynamic linker does not accept needed library $i."
-		    echo "*** I have the capability to make that library automatically link in when"
-		    echo "*** you link to this library.  But I can only do this if you have a"
-		    echo "*** shared version of the library, which I believe you do not have"
-		    echo "*** because a test_compile did reveal that the linker did not use it for"
-		    echo "*** its dynamic dependency list that programs get resolved with at runtime."
-		  fi
-		fi
-		;;
-	      *)
-		func_append newdeplibs " $i"
-		;;
-	      esac
-	    done
-	  else
-	    # Error occurred in the first compile.  Let's try to salvage
-	    # the situation: Compile a separate program for each library.
-	    for i in $deplibs; do
-	      case $i in
-	      -l*)
-		func_stripname -l '' "$i"
-		name=$func_stripname_result
-		$opt_dry_run || $RM conftest
-		if $LTCC $LTCFLAGS -o conftest conftest.c $i; then
-		  ldd_output=`ldd conftest`
-		  if test yes = "$allow_libtool_libs_with_static_runtimes"; then
-		    case " $predeps $postdeps " in
-		    *" $i "*)
-		      func_append newdeplibs " $i"
-		      i=
-		      ;;
-		    esac
-		  fi
-		  if test -n "$i"; then
-		    libname=`eval "\\$ECHO \"$libname_spec\""`
-		    deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
-		    set dummy $deplib_matches; shift
-		    deplib_match=$1
-		    if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0; then
-		      func_append newdeplibs " $i"
-		    else
-		      droppeddeps=yes
-		      echo
-		      $ECHO "*** Warning: dynamic linker does not accept needed library $i."
-		      echo "*** I have the capability to make that library automatically link in when"
-		      echo "*** you link to this library.  But I can only do this if you have a"
-		      echo "*** shared version of the library, which you do not appear to have"
-		      echo "*** because a test_compile did reveal that the linker did not use this one"
-		      echo "*** as a dynamic dependency that programs can get resolved with at runtime."
-		    fi
-		  fi
-		else
-		  droppeddeps=yes
-		  echo
-		  $ECHO "*** Warning!  Library $i is needed by this library but I was not able to"
-		  echo "*** make it link in!  You will probably need to install it or some"
-		  echo "*** library that it depends on before this library will be fully"
-		  echo "*** functional.  Installing it before continuing would be even better."
-		fi
-		;;
-	      *)
-		func_append newdeplibs " $i"
-		;;
-	      esac
-	    done
-	  fi
-	  ;;
 	file_magic*)
 	  set dummy $deplibs_check_method; shift
 	  file_magic_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
diff --git a/doc/libtool.texi b/doc/libtool.texi
index 664e5495f..aabc495ab 100644
--- a/doc/libtool.texi
+++ b/doc/libtool.texi
@@ -5516,13 +5516,6 @@ for a match against the extended regular expression @var{regex}.  When
 argument to @samp{$file_magic_cmd} to verify whether the
 regular expression matches its output, and warn the user otherwise.
 
-@item test_compile
-@vindex test_compile
-just checks whether it is possible to link a program out of a list of
-libraries, and checks which of those are listed in the output of
-@code{ldd}.  It is currently unused, and will probably be dropped in the
-future.
-
 @item pass_all
 @vindex pass_all
 will pass everything without any checking.  This may work on platforms
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 66b12b5a5..6a2f419a7 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -3452,7 +3452,6 @@ lt_cv_deplibs_check_method='unknown'
 # 'none' -- dependencies not supported.
 # 'unknown' -- same as none, but documents that we really don't know.
 # 'pass_all' -- all dependencies passed with no checks.
-# 'test_compile' -- check by making test program.
 # 'file_magic [[regex]]' -- check by looking for files in library path
 # that responds to the $file_magic_cmd with a given extended regex.
 # If you have 'file' or equivalent on your system and you're not sure
-- 
2.47.2