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From e87336e8d583044d62b1a9400db4c29f1474fa50 Mon Sep 17 00:00:00 2001
From: nE0sIghT <ykonotopov@gmail.com>
Date: Wed, 5 Aug 2015 12:37:36 +0300
Subject: [PATCH 1/2] Backported new libraries search code

---
 acinclude.m4 | 75 ++++++++++++++++++++++++++++++++++++++++++++---
 configure.in | 96 +++++++++++++++++++++++-------------------------------------
 2 files changed, 107 insertions(+), 64 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index a44747c..1e307c9 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -43,16 +43,17 @@ for ac_dir in $1 /usr/include;
 ])
 
 dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_LIBRARIES(search path, lib name), sets ac_find_libraries
-dnl to the full name of the file that was found or leaves it empty if not found
+dnl call WX_PATH_FIND_LIBRARIES(lib name, [optional extra search paths])
+dnl sets ac_find_libraries to the full name of the file that was found
+dnl or leaves it empty if not found
 dnl ---------------------------------------------------------------------------
 AC_DEFUN([WX_PATH_FIND_LIBRARIES],
 [
   ac_find_libraries=
-  for ac_dir in $1;
+  for ac_dir in $2 $SEARCH_LIB
   do
     for ac_extension in a so sl dylib dll.a; do
-      if test -f "$ac_dir/lib$2.$ac_extension"; then
+      if test -f "$ac_dir/lib$1.$ac_extension"; then
         ac_find_libraries=$ac_dir
         break 2
       fi
@@ -115,6 +116,72 @@ AC_DEFUN([WX_LINK_PATH_EXIST],
   fi
 ])
 
+dnl ---------------------------------------------------------------------------
+dnl Usage: WX_FIND_LIB(lib-name, [lib-function to test], [extra search paths])
+dnl
+dnl Tests in a variety of ways for the presence of lib-name
+dnl
+dnl On success, returns any novel path found in ac_find_libraries; else "std"
+dnl             and any cflags in ac_find_cflags
+dnl On failure, ac_find_libraries will be empty
+dnl ---------------------------------------------------------------------------
+AC_DEFUN([WX_FIND_LIB],
+[
+  ac_find_libraries=
+
+  dnl Try with pkg-config first. It requires its lib-name parameter lowercase
+  fl_pkgname=`echo "$1" | tr [[:upper:]] [[:lower:]]`
+  dnl suppress PKG_PROG_PKG_CONFIG output; we don't want to keep seeing it
+  PKG_PROG_PKG_CONFIG() AS_MESSAGE_FD> /dev/null
+  PKG_CHECK_MODULES([$1], [$fl_pkgname],
+    [
+      dnl Start by assuming there are no novel lib paths
+      ac_find_libraries="std"
+
+      dnl A simple copy of the internal vars $1_CFLAGS $1_LIBS doesn't work
+      dnl inside the macro
+      dnl
+      dnl TODO: When we stop being autoconf 2.61 compatible, the next 2 lines
+      dnl should become:
+      dnl AS_VAR_COPY([ac_find_cflags], [$1_CFLAGS])
+      dnl AS_VAR_COPY([fl_libs], [$1_LIBS])
+      eval ac_find_cflags=\$$1_CFLAGS
+      eval fl_libs=\$$1_LIBS
+
+      dnl fl_libs may now contain -Lfoopath -lfoo (only non-standard paths are
+      dnl added) We only want the path bit, not the lib names
+      for fl_path in $fl_libs
+      do
+        if test `echo "$fl_path" | cut -c 1-2` = "-L"; then
+          dnl there shouldn't be >1 novel path
+          dnl return it without the -L, ready for WX_LINK_PATH_EXIST
+          ac_find_libraries=`echo "$fl_path" | cut -c 3-`
+        fi
+      done
+    ],
+    [
+      if test "x$ac_find_libraries" = "x"; then
+        dnl Next with AC_CHECK_LIB, if a test function was provided
+        if test "x$2" != "x"; then
+          AC_CHECK_LIB([$1], [$2], [ac_find_libraries="std"])
+        fi
+      fi
+
+      if test "x$ac_find_libraries" = "x"; then
+        dnl Finally try the search path
+        dnl Output a message again, as AC_CHECK_LIB will just have said "no"
+        AC_MSG_CHECKING([elsewhere])
+        dnl $3 will occasionally hold extra path(s) to search
+        WX_PATH_FIND_LIBRARIES([$1], [$3])
+        if test "x$ac_find_libraries" != "x"; then
+          AC_MSG_RESULT([yes])
+        else
+          AC_MSG_RESULT([no])
+        fi
+      fi
+    ])
+])
+
 dnl ===========================================================================
 dnl C++ features test
 dnl ===========================================================================
diff --git a/configure.in b/configure.in
index 021845d..9c78ba3 100644
--- a/configure.in
+++ b/configure.in
@@ -2767,7 +2767,7 @@ if test "$build" != "$host" -a "$GCC" = yes; then
             x_includes=$ac_find_includes
         fi
         if test -z "$x_libraries" -o "$x_libraries" = NONE; then
-            WX_PATH_FIND_LIBRARIES($SEARCH_LIB, Xt)
+            WX_PATH_FIND_LIBRARIES(Xt)
             x_libraries=$ac_find_libraries
         fi
     fi
@@ -3554,7 +3554,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
         dnl test for external libxpm if we're configured to use it
         if test "$wxUSE_GPE" = "yes"; then
             AC_MSG_CHECKING(for gpewidget library)
-            WX_PATH_FIND_LIBRARIES($SEARCH_LIB,gpewidget)
+            WX_PATH_FIND_LIBRARIES(gpewidget)
             if test "$ac_find_libraries" != "" ; then
                 WX_LINK_PATH_EXIST($ac_find_libraries,$GUI_TK_LIBRARY)
                 dnl -lgpewidget must be before all GTK libs and
@@ -3567,7 +3567,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             fi
 
             dnl AC_MSG_CHECKING(for gpe library)
-            dnl WX_PATH_FIND_LIBRARIES($SEARCH_LIB,gpe)
+            dnl WX_PATH_FIND_LIBRARIES(gpe)
             dnl if test "$ac_find_libraries" != "" ; then
             dnl     WX_LINK_PATH_EXIST($ac_find_libraries,$GUI_TK_LIBRARY)
             dnl     GUI_TK_LIBRARY="$GUI_TK_LIBRARY -lgpe"
@@ -3817,7 +3817,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
 
 
         AC_MSG_CHECKING(for Motif/Lesstif library)
-        WX_PATH_FIND_LIBRARIES($SEARCH_LIB, Xm)
+        WX_PATH_FIND_LIBRARIES(Xm)
 
         if test "x$ac_find_libraries" != "x" ; then
             AC_MSG_RESULT(found in $ac_find_libraries)
@@ -3956,7 +3956,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
         dnl test for external libxpm if we're configured to use it
         if test "$wxUSE_LIBXPM" = "sys"; then
             AC_MSG_CHECKING(for Xpm library)
-            WX_PATH_FIND_LIBRARIES($SEARCH_LIB,Xpm)
+            WX_PATH_FIND_LIBRARIES(Xpm)
             if test "$ac_find_libraries" != "" ; then
                 WX_LINK_PATH_EXIST($ac_find_libraries,$GUI_TK_LIBRARY)
                 GUI_TK_LIBRARY="$GUI_TK_LIBRARY$ac_path_to_link"
@@ -4192,41 +4192,23 @@ dnl ---------------------------------------------------------------------------
 dnl wxDisplay Sanity checks
 dnl ---------------------------------------------------------------------------
 
+USE_XINERAMA=0
 if test "$wxUSE_DISPLAY" = "yes"; then
 dnl ---------------------------------------------------------------------------
 dnl Xinerama (for unix ) - Brian Victor
 dnl ---------------------------------------------------------------------------
     if test "$wxUSE_UNIX" = "yes" -a "$wxUSE_MAC" != 1 -a "$wxUSE_COCOA" != 1; then
-        AC_MSG_CHECKING([for Xinerama])
-        WX_PATH_FIND_LIBRARIES([$SEARCH_LIB],Xinerama)
+        WX_FIND_LIB(Xinerama, XineramaQueryScreens)
         if test "$ac_find_libraries" != "" ; then
-            WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
-            if test "$ac_path_to_link" != " -L/usr/lib" ; then
-                LDFLAGS="$LDFLAGS $ac_path_to_link"
+            if test "$ac_find_libraries" != "std" ; then
+              WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
+              if test "$ac_path_to_link" != " -L/usr/lib" ; then
+                  LDFLAGS="$LDFLAGS $ac_path_to_link"
+              fi
             fi
+            USE_XINERAMA=1
             GUI_TK_LIBRARY="$GUI_TK_LIBRARY -lXinerama"
-            AC_MSG_RESULT([yes])
-
-            AC_MSG_CHECKING([for Xxf86vm extension])
-            WX_PATH_FIND_LIBRARIES([$SEARCH_LIB],Xxf86vm)
-            if test "$ac_find_libraries" != "" ; then
-                AC_MSG_RESULT([yes])
-                AC_CHECK_HEADERS([X11/extensions/xf86vmode.h],
-                                 [
-                                  GUI_TK_LIBRARY="$GUI_TK_LIBRARY -lXxf86vm"
-                                 ],
-                                 [],
-                                 [
-                                      #if HAVE_X11_XLIB_H
-                                        #include <X11/Xlib.h>
-                                      #endif
-                                 ])
-            else
-                AC_MSG_RESULT([no])
-            fi
-
         else
-            AC_MSG_RESULT([no])
             AC_MSG_WARN([Xinerama not found; disabling wxDisplay])
             wxUSE_DISPLAY="no"
         fi
@@ -4243,17 +4225,16 @@ dnl X11 session management
 dnl ---------------------------------------------------------------------------
 if test "$wxUSE_DETECT_SM" = "yes"; then
     if test "$wxUSE_UNIX" = "yes" -a "$wxUSE_MAC" != 1 -a "$wxUSE_COCOA" != 1; then
-        AC_MSG_CHECKING([for -lSM - X11 session management])
-        WX_PATH_FIND_LIBRARIES([$SEARCH_LIB],SM)
+        WX_FIND_LIB(SM, SmcOpenConnection)
         if test "$ac_find_libraries" != "" ; then
-            WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
-            if test "$ac_path_to_link" != " -L/usr/lib" ; then
+            if test "$ac_find_libraries" != "std" ; then
+              WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
+              if test "$ac_path_to_link" != " -L/usr/lib" ; then
                 LDFLAGS="$LDFLAGS $ac_path_to_link"
+              fi
             fi
             GUI_TK_LIBRARY="$GUI_TK_LIBRARY -lSM"
-            AC_MSG_RESULT([yes])
         else
-            AC_MSG_RESULT([no])
             AC_MSG_WARN([libSM not found; disabling session management detection])
             wxUSE_DETECT_SM="no"
         fi
@@ -4295,51 +4276,46 @@ if test "$wxUSE_OPENGL" = "yes"; then
             AC_CHECK_HEADER(GL/glu.h, [
                 found_gl=0
 
-                AC_MSG_CHECKING([for -lGL])
-                WX_PATH_FIND_LIBRARIES([$SEARCH_LIB /opt/graphics/OpenGL/lib],GL)
+                WX_FIND_LIB(GL, glBegin, [/opt/graphics/OpenGL/lib])
                 if test "$ac_find_libraries" != "" ; then
-                    AC_MSG_RESULT([found in $ac_find_libraries])
-
-                    WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
-                    if test "$ac_path_to_link" != " -L/usr/lib" ; then
+                    if test "$ac_find_libraries" != "std" ; then
+                      WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
+                      if test "$ac_path_to_link" != " -L/usr/lib" ; then
                         LDFLAGS_GL="$ac_path_to_link"
+                      fi
                     fi
 
                     dnl don't suppose that libGL and libGLU are always in the
                     dnl same directory -- this is not true for some common
                     dnl distributions
-                    AC_MSG_CHECKING([for -lGLU])
-                    WX_PATH_FIND_LIBRARIES([$SEARCH_LIB],GLU)
+                    WX_FIND_LIB(GLU, gluBeginCurve, [/opt/graphics/OpenGL/lib])
                     if test "$ac_find_libraries" != "" ; then
+                      if test "$ac_find_libraries" != "std" ; then
                         WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
                         if test "$ac_path_to_link" != " -L/usr/lib" -a \
-                                    "$ac_path_to_link" != "$LDFLAGS_GL"; then
-                            LDFLAGS_GL="$LDFLAGS_GL$ac_path_to_link"
+                                "$ac_path_to_link" != "$LDFLAGS_GL" ; then
+                          LDFLAGS_GL="$LDFLAGS_GL$ac_path_to_link"
                         fi
+                      fi
 
                         found_gl=1
                         OPENGL_LIBS="-lGL -lGLU"
-                        AC_MSG_RESULT([yes])
-                    else
-                        AC_MSG_RESULT([no])
                     fi
-                else
-                    AC_MSG_RESULT([no])
                 fi
 
                 if test "$found_gl" != 1; then
-                    AC_MSG_CHECKING([for -lMesaGL])
-                    WX_PATH_FIND_LIBRARIES([$SEARCH_LIB],MesaGL)
+                    WX_FIND_LIB(MesaGL, glEnable, [/opt/graphics/OpenGL/lib])
                     if test "$ac_find_libraries" != "" ; then
+                      if test "$ac_find_libraries" != "std" ; then
                         WX_LINK_PATH_EXIST([$ac_find_libraries],[$LDFLAGS])
-                        LDFLAGS_GL="$LDFLAGS$ac_path_to_link"
-                        OPENGL_LIBS="-lMesaGL -lMesaGLU"
-                        AC_MSG_RESULT([yes])
-                    else
-                        AC_MSG_RESULT([no])
+                        if test "$ac_path_to_link" != " -L/usr/lib" ; then
+                          LDFLAGS_GL="$LDFLAGS_GL$ac_path_to_link"
+                        fi
+                      fi
+                      OPENGL_LIBS="-lMesaGL -lMesaGLU"
                     fi
                 fi
-            ])
+            ],, [ ])
         ],
         [],
         [ ])
-- 
2.4.6