freeimage: fixes (#7371)

* libm was missing
* disable arm-neon optimisation in LibPng since arm code is missing (which gave undefined error)
* swab patch was included but not compiled

packages/freeimage/Makefile.gnu.patch

@@ -1,5 +1,30 @@
---- a/Makefile.gnu
-+++ b/Makefile.gnu
+--- FreeImage/Makefile.gnu	2021-08-20 21:04:25.244999878 +0530
++++ FreeImage-patch/Makefile.gnu	2021-08-21 10:28:21.714786780 +0530
+@@ -5,19 +5,19 @@
+ 
+ # General configuration variables:
+ DESTDIR ?= /
+-INCDIR ?= $(DESTDIR)/usr/include
+-INSTALLDIR ?= $(DESTDIR)/usr/lib
++INCDIR ?= @TERMUX_PREFIX@/include
++INSTALLDIR ?= @TERMUX_PREFIX@/lib
+ 
+ # Converts cr/lf to just lf
+ DOS2UNIX = dos2unix
+ 
+-LIBRARIES = -lstdc++
++LIBRARIES = -lstdc++ -lm
+ 
+ MODULES = $(SRCS:.c=.o)
+ MODULES := $(MODULES:.cpp=.o)
+-CFLAGS ?= -O3 -fPIC -fexceptions -fvisibility=hidden
++CFLAGS ?= -O3 -fPIC -fexceptions -fvisibility=hidden -fstack-protector-strong -Oz
+ # OpenJPEG
+-CFLAGS += -DOPJ_STATIC
++CFLAGS += -DOPJ_STATIC -DPNG_ARM_NEON_OPT=0
+ # LibRaw
+ CFLAGS += -DNO_LCMS
+ # LibJXR
 @@ -71,9 +71,9 @@
  
  install:

packages/freeimage/build.sh

@@ -1,15 +1,18 @@
-TERMUX_PKG_HOMEPAGE=https://freeimage.sourceforge.io
+TERMUX_PKG_HOMEPAGE="https://freeimage.sourceforge.io"
 TERMUX_PKG_DESCRIPTION="The library project for developers who would like to support popular graphics image formats."
 TERMUX_PKG_LICENSE="custom"
 TERMUX_PKG_LICENSE_FILE="license-fi.txt, license-gplv2.txt, license-gplv3.txt, license-bsd-2-clause.txt"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=3.18.0
-TERMUX_PKG_SRCURL=https://downloads.sourceforge.net/project/freeimage/Source%20Distribution/${TERMUX_PKG_VERSION}/FreeImage${TERMUX_PKG_VERSION//./}.zip
+TERMUX_PKG_REVISION=1
+TERMUX_PKG_SRCURL="https://downloads.sourceforge.net/project/freeimage/Source%20Distribution/${TERMUX_PKG_VERSION}/FreeImage${TERMUX_PKG_VERSION//./}.zip"
 TERMUX_PKG_SHA256=f41379682f9ada94ea7b34fe86bf9ee00935a3147be41b6569c9605a53e438fd
 TERMUX_PKG_BUILD_IN_SRC=true
-TERMUX_PKG_EXTRA_MAKE_ARGS="DESTDIR=${TERMUX_PREFIX}/../"
-TERMUX_PKG_MAKE_INSTALL_TARGET="DESTDIR=${TERMUX_PREFIX}/../ install"
 
 termux_step_pre_configure() {
-	cp -f $TERMUX_PKG_BUILDER_DIR/license-bsd-2-clause.txt $TERMUX_PKG_SRCDIR/
+	cp -f "${TERMUX_PKG_BUILDER_DIR}/license-bsd-2-clause.txt" "${TERMUX_PKG_SRCDIR}"
+}
+
+termux_step_make() {
+	make LDFLAGS="${LDFLAGS}"
 }