CI (macos): Install and use libiconv from Homebrew.

.github/workflows/make-macos.yaml

@@ -76,7 +76,7 @@ jobs:
           brew install --overwrite [email protected] [email protected]
           brew reinstall gcc
           brew install arpack epstool fftw fig2dev fltk fontconfig freetype \
-            ghostscript gl2ps glpk gnuplot graphicsmagick hdf5 libsndfile \
+            ghostscript gl2ps glpk gnuplot graphicsmagick hdf5 libiconv libsndfile \
             libtool openblas pcre2 portaudio pstoedit qhull qrupdate \
             qscintilla2 qt@${{ matrix.qt }} rapidjson readline suite-sparse sundials texinfo \
             ccache gnu-sed openjdk pkg-config \
@@ -89,6 +89,7 @@ jobs:
           echo "${HOMEBREW_PREFIX}/opt/texinfo/bin" >> $GITHUB_PATH
           echo "${HOMEBREW_PREFIX}/opt/bison/bin" >> $GITHUB_PATH
           echo "${HOMEBREW_PREFIX}/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
+          echo "${HOMEBREW_PREFIX}/opt/libiconv/bin" >> $GITHUB_PATH
 
       - name: prepare ccache
         # create key with human readable timestamp
@@ -146,19 +147,21 @@ jobs:
           echo gfortran --version
           gfortran --version
           mkdir .build
+          echo "::group::Run configure script"
           cd .build && ../configure \
             CXX="${CXX} ${{ matrix.cxx-compiler-flags }}" \
             F77="ccache gfortran" \
-            CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/gettext/include -I${HOMEBREW_PREFIX}/opt/icu4c/include -I${HOMEBREW_PREFIX}/opt/qt@${{ matrix.qt }}/include -I${HOMEBREW_PREFIX}/opt/readline/include -I${HOMEBREW_PREFIX}/opt/sqlite/include $MY_CPPFLAGS -I${HOMEBREW_PREFIX}/include" \
+            CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/gettext/include -I${HOMEBREW_PREFIX}/opt/icu4c/include -I${HOMEBREW_PREFIX}/opt/libiconv/include -I${HOMEBREW_PREFIX}/opt/qt@${{ matrix.qt }}/include -I${HOMEBREW_PREFIX}/opt/readline/include -I${HOMEBREW_PREFIX}/opt/sqlite/include $MY_CPPFLAGS -I${HOMEBREW_PREFIX}/include" \
             CXXFLAGS="-O2 -g" \
-            LDFLAGS="-L${HOMEBREW_PREFIX}/opt/bison/lib -L${HOMEBREW_PREFIX}/opt/gettext/lib -L${HOMEBREW_PREFIX}/opt/icu4c/lib -L${HOMEBREW_PREFIX}/opt/readline/lib -L${HOMEBREW_PREFIX}/opt/sqlite/lib $MY_LDFLAGS -L${HOMEBREW_PREFIX}/lib" \
+            LDFLAGS="-L${HOMEBREW_PREFIX}/opt/bison/lib -L${HOMEBREW_PREFIX}/opt/gettext/lib -L${HOMEBREW_PREFIX}/opt/icu4c/lib -L${HOMEBREW_PREFIX}/opt/libiconv/lib -L${HOMEBREW_PREFIX}/opt/readline/lib -L${HOMEBREW_PREFIX}/opt/sqlite/lib $MY_LDFLAGS -L${HOMEBREW_PREFIX}/lib" \
             PKG_CONFIG_PATH="${HOMEBREW_PREFIX}/opt/openblas/lib/pkgconfig:${HOMEBREW_PREFIX}/opt/icu4c/lib/pkgconfig:${HOMEBREW_PREFIX}/${{ matrix.qt-pkg-config-path }}" \
             --with-qt=${{ matrix.qt }} \
             QCOLLECTIONGENERATOR="qhelpgenerator" \
             --with-x=no \
             --with-blas="-L${HOMEBREW_PREFIX}/opt/openblas/lib -lopenblas" \
             --with-java-homedir="${HOMEBREW_PREFIX}/opt/openjdk" \
             --prefix="${HOME}/usr"
+          echo "::endgroup::"
           echo "::group::Show config.log"
           cat ./config.log
           echo "::endgroup::"