Fix tests (#56)

* update to gcc 11
* update mac ci for modern brew
* update autoconf stuff
* add libtool

.github/workflows/linux-ci.yml

@@ -21,8 +21,8 @@ jobs:
       run: |
         sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
         sudo apt-get update -qq
-        sudo apt-get install -y gcc-7 g++-7
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 70 --slave /usr/bin/g++ g++ /usr/bin/g++-7
+        sudo apt-get install -y gcc-11 g++-11
+        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 70 --slave /usr/bin/g++ g++ /usr/bin/g++-11
         sudo apt-get install -y tcl8.6-dev tk8.6-dev libreadline-dev expect
     - name: configure	
       run: | 

.github/workflows/mac-ci.yml

@@ -16,19 +16,12 @@ jobs:
     - name: Install dependencies
       run: |
         brew update
-        brew install tcl-tk || brew upgrade tcl-tk
-        brew install readline || brew upgrade readline
-        brew install autoconf || brew upgrade autoconf
-        brew install automake || brew upgrade automake
-        sudo mkdir -p /usr/local
-        sudo ln -sf /usr/local/opt/tcl-tk/include /usr/local/include/tcl8.6
-        sudo cp /usr/local/opt/tcl-tk/lib/libtcl* /usr/local/lib
-        sudo ln -sf /usr/local/opt/tcl-tk/bin/tclsh8.6 /usr/local/bin/tclsh
-        sudo ln -sf /usr/local/opt/tcl-tk/bin/tclsh8.6 /usr/local/bin/tclsh8.6
+        brew install tcl-tk readline autoconf automake libtool
     - name: configure	
       run: |
+        glibtoolize
         autoreconf -vif
-        ./configure --with-readline-includes=/usr/local/Cellar/readline/8.1/include --with-readline-library=/usr/local/Cellar/readline/8.1/lib --with-tcl=/usr/local/opt/tcl-tk/lib --with-tcl-includes=/usr/local/opt/tcl-tk/include
+        ./configure --with-readline-includes=/opt/homebrew/opt/readline/include --with-readline-library=/opt/homebrew/opt/readline/lib --with-tcl=/opt/homebrew/opt/tcl-tk/lib --with-tcl-includes=/opt/homebrew/opt/tcl-tk/include
     - name: make
       run: make
     - name: install

Makefile.am

@@ -15,7 +15,7 @@ lib_LTLIBRARIES = libtclreadline.la
 libtclreadline_la_SOURCES = config.h tclreadline.c tclreadline.h
 include_HEADERS = tclreadline.h
 
-INCLUDES = -I$(TCL_INCLUDE_DIR) -I$(READLINE_INCLUDE_DIR)
+AM_CPPFLAGS = -I$(TCL_INCLUDE_DIR) -I$(READLINE_INCLUDE_DIR)
 
 if !USE_TCL_STUBS
     libtclreadline_la_CFLAGS = -Wall