gmic: workaround libunwind.a linking issue with a better approach

also building variant that does not make use of graphicsmagick

packages/gmic/Makefile.patch

@@ -1,60 +1,42 @@
---- ./src/Makefile.orig	2019-04-16 14:41:09.000000000 +0000
+diff --git a/src/Makefile~ b/src/Makefile
-+++ ./src/Makefile	2019-05-07 01:09:58.583727894 +0000
+index 4df1c97..4d2659a 100644
-@@ -60,7 +60,7 @@
+--- a/src/Makefile~
- 
++++ b/src/Makefile
- # Try to auto-detect target OS.
+@@ -199,7 +199,7 @@ endif
- OS = $(shell uname)
--USR = /usr
-+USR = $(PREFIX)
- LIB = lib
- BIN = bin
- INCLUDE = include
-@@ -146,9 +146,7 @@
- endif
- 
- ifdef NOSTRIP
--STRIP = echo skip strip
--else
--STRIP = strip
-+STRIP = echo skip stripe
- endif
- 
- ifndef QMAKE
-@@ -199,7 +197,7 @@
  # Enable multi-threading support.
  PARALLEL_CFLAGS = -Dgmic_is_parallel
  ifneq ($(OS),Windows)
 -PARALLEL_LIBS = -lpthread
-+PARALLEL_LIBS = #-lpthread
++#PARALLEL_LIBS = -lpthread
  endif
  
  # Enable parallelization in CImg, using OpenMP.
-@@ -339,8 +337,8 @@
+@@ -339,8 +339,8 @@ native:
  GMIC_CLI_CFLAGS = $(MANDATORY_CFLAGS) $(ABORT_CFLAGS) $(PARALLEL_CFLAGS) $(EIGEN_CFLAGS) $(FFTW_CFLAGS) $(CURL_CFLAGS) $(PNG_CFLAGS) $(JPEG_CFLAGS) $(TIFF_CFLAGS)
  GMIC_CLI_LIBS = $(MANDATORY_LIBS) $(PARALLEL_LIBS) $(EIGEN_LIBS) $(FFTW_LIBS) $(CURL_LIBS) $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
  ifeq ($(OS),Unix) # Unix.
 -GMIC_CLI_CFLAGS += $(OPENMP_CFLAGS) $(X11_CFLAGS) $(OPENEXR_CFLAGS) $(OPENCV_CFLAGS) # $(XSHM_CFLAGS) $(MAGICK_CFLAGS)
 -GMIC_CLI_LIBS += $(OPENMP_LIBS) $(X11_LIBS) $(OPENEXR_LIBS) $(OPENCV_LIBS) # $(XSHM_LIBS) # $(MAGICK_LIBS)
-+GMIC_CLI_CFLAGS += $(MAGICK_CFLAGS) # $(OPENMP_CFLAGS) $(X11_CFLAGS) $(OPENEXR_CFLAGS) $(OPENCV_CFLAGS) # $(XSHM_CFLAGS) $(MAGICK_CFLAGS)
++#GMIC_CLI_CFLAGS += $(OPENMP_CFLAGS) $(X11_CFLAGS) $(OPENEXR_CFLAGS) $(OPENCV_CFLAGS) # $(XSHM_CFLAGS) $(MAGICK_CFLAGS)
-+GMIC_CLI_LIBS += $(MAGICK_LIBS) # $(OPENMP_LIBS) $(X11_LIBS) $(OPENEXR_LIBS) $(OPENCV_LIBS) # $(XSHM_LIBS) # $(MAGICK_LIBS)
++#GMIC_CLI_LIBS += $(OPENMP_LIBS) $(X11_LIBS) $(OPENEXR_LIBS) $(OPENCV_LIBS) # $(XSHM_LIBS) # $(MAGICK_LIBS)
  else
  ifeq ($(OS),Darwin) # MacOSX.
  GMIC_CLI_CFLAGS += $(X11_CFLAGS) $(OPENEXR_CFLAGS) $(OPENCV_CFLAGS)
-@@ -352,15 +350,14 @@
+@@ -353,7 +353,7 @@ endif
- endif
  
  cli:
--	$(MAKE) "CFLAGS+=$(GMIC_CLI_CFLAGS) $(OPT_CFLAGS)" "LIBS+=$(GMIC_CLI_LIBS)" _cli
+ 	$(MAKE) "CFLAGS+=$(GMIC_CLI_CFLAGS) $(OPT_CFLAGS)" "LIBS+=$(GMIC_CLI_LIBS)" _cli
 -	$(STRIP) gmic$(EXE)
-+	$(MAKE) "CFLAGS+= $(CXXFLAGS) $(GMIC_CLI_CFLAGS) $(OPT_CFLAGS)" "LIBS+=$(GMIC_CLI_LIBS)" _cli
++	$(STRIP) gmic$(EXE) gmic-gm$(EXE)
  
  debug:
  	$(MAKE) "CFLAGS+=$(GMIC_CLI_CFLAGS) $(DEBUG_CFLAGS)" "LIBS+=$(GMIC_CLI_LIBS)" _cli
- 
+@@ -361,6 +361,8 @@ debug:
  _cli: check_versions gmic.cpp gmic.h gmic_stdlib.h CImg.h
  	$(CXX) -o gmic_cli.o -c gmic.cpp $(CFLAGS)
--	$(CXX) -o gmic gmic_cli.cpp gmic_cli.o $(CFLAGS) $(LIBS)
+ 	$(CXX) -o gmic gmic_cli.cpp gmic_cli.o $(CFLAGS) $(LIBS)
-+	$(CXX) -o gmic gmic_cli.cpp gmic_cli.o $(CFLAGS) $(LIBS) $(LDFLAGS)
++	$(CXX) -o gmic_cli_gm.o -c gmic.cpp $(CFLAGS) $(MAGICK_CFLAGS)
++	$(CXX) -o gmic-gm gmic_cli.cpp gmic_cli_gm.o $(CFLAGS) $(MAGICK_CFLAGS) $(LIBS) $(MAGICK_LIBS)
  
  # CLI (static)
  #-------------

packages/gmic/build.sh

@@ -2,10 +2,11 @@ TERMUX_PKG_HOMEPAGE=https://gmic.eu
 TERMUX_PKG_DESCRIPTION="Full-featured framework for image processing"
 TERMUX_PKG_LICENSE="CeCILL-2.1"
 TERMUX_PKG_VERSION=2.6.1
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SHA256=48de7045a36eb718d55b0dfd68a797380b5390af99c9737a4dfba0fb678ed2b4
 TERMUX_PKG_SRCURL=https://gmic.eu/files/source/gmic_$TERMUX_PKG_VERSION.tar.gz
-TERMUX_PKG_DEPENDS="graphicsmagick, libcurl, fftw, libpng, libjpeg-turbo, libtiff, zlib"
+TERMUX_PKG_DEPENDS="libcurl, fftw, libpng, libjpeg-turbo, libtiff, zlib"
+TERMUX_PKG_BUILD_DEPENDS="graphicsmagick"
 TERMUX_PKG_NO_DEVELSPLIT=yes
 TERMUX_PKG_BUILD_IN_SRC=yes
 
@@ -15,17 +16,14 @@ termux_step_configure() {
 
 termux_step_make() {
 	cd src/
-	if [ $TERMUX_ARCH = "arm" ]; then
+	make USR="$TERMUX_PREFIX" STRIP="$STRIP" \
-		make cli  LIBS=" -lunwind -L/data/data/com.termux/files/usr/lib  -lfftw3 -lfftw3_threads -lcurl -lpng16 -lz -ljpeg -ltiff -lGraphicsMagick++ -lGraphicsMagick"
+	     CFLAGS="$CXXFLAGS" LIBS="$LDFLAGS -lgcc" cli
-	else
-		make cli
-	fi
 }
 
 termux_step_make_install() {
-	cp src/gmic $TERMUX_PREFIX/bin/gmic
+	cp src/gmic $TERMUX_PREFIX/bin/
-	cp src/*.h $TERMUX_PREFIX/include/
+	cp src/gmic-gm $TERMUX_PREFIX/bin/
-	gunzip man/gmic.1.gz
+	cp man/gmic.1.gz $TERMUX_PREFIX/share/man/man1/
-	cp man/gmic.1 $TERMUX_PREFIX/share/man/man1
+	cp man/gmic.1.gz $TERMUX_PREFIX/share/man/man1/gmic-gm.1.gz
 }
 

packages/gmic/gmic-gm.subpackage.sh

@@ -0,0 +1,4 @@
+TERMUX_SUBPKG_INCLUDE="bin/gmic-gm share/man/man1/gmic-gm.1.gz"
+TERMUX_SUBPKG_DESCRIPTION="Full-featured framework for image processing (GraphicsMagick variant)"
+TERMUX_SUBPKG_DEPENDS="graphicsmagick"
+TERMUX_SUBPKG_DEPEND_ON_PARENT=deps