pip install lxml fails with the following error:-
running setup.py install for lxml ... error
ERROR: Complete output from command /data/data/com.termux/files/usr/bin/python -u -c 'import setuptools, tokenize;file='"'"'/data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /data/data/com.termux/files/usr/tmp/pip-record-y296du61/install-record.txt --single-version-externally-managed --compile:
ERROR: Building lxml version 4.3.3.
Building without Cython.
Using build configuration of libxslt 1.1.33
Building against libxml2/libxslt in the following directory: /data/data/com.termux/files/usr/lib
running install
running build
running build_py
creating build
creating build/lib.linux-aarch64-3.7
creating build/lib.linux-aarch64-3.7/lxml
copying src/lxml/sax.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/pyclasslookup.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/usedoctest.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/init.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/cssselect.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/ElementInclude.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/_elementpath.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/builder.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/doctestcompare.py -> build/lib.linux-aarch64-3.7/lxml
creating build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/init.py -> build/lib.linux-aarch64-3.7/lxml/includes
creating build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/defs.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/diff.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/builder.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/clean.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/init.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/formfill.py -> build/lib.linux-aarch64-3.7/lxml/html
creating build/lib.linux-aarch64-3.7/lxml/isoschematron
copying src/lxml/isoschematron/init.py -> build/lib.linux-aarch64-3.7/lxml/isoschematron
copying src/lxml/etree.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/etree_api.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/lxml.etree.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/includes/xinclude.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/etreepublic.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/init.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/c14n.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.linux-aarch64-3.7/lxml/includes
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/rng
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_skeleton_for_xslt1.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.linux-aarch64-3.7
creating build/temp.linux-aarch64-3.7/src
creating build/temp.linux-aarch64-3.7/src/lxml
aarch64-linux-android-clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Oz -Oz -fPIC -DCYTHON_CLINE_IN_TRACEBACK=0 -I/data/data/com.termux/files/usr/include -I/data/data/com.termux/files/usr/include/libxml2 -Isrc -Isrc/lxml/includes -I/data/data/com.termux/files/usr/include/python3.7m -c src/lxml/etree.c -o build/temp.linux-aarch64-3.7/src/lxml/etree.o -w
In file included from src/lxml/etree.c:687:
In file included from src/lxml/includes/etree_defs.h:186:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/tree.h:1307:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xmlmemory.h:218:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/threads.h:35:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/globals.h:18:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/parser.h:810:
/data/data/com.termux/files/usr/include/libxml2/libxml/encoding.h:28:10: fatal error: 'iconv.h' file not found
#include <iconv.h>
^~~~~~~~~
1 error generated.
Compile failed: command 'aarch64-linux-android-clang' failed with exit status 1
creating data
creating data/data
creating data/data/com.termux
creating data/data/com.termux/files
creating data/data/com.termux/files/usr
creating data/data/com.termux/files/usr/tmp
cc -I/data/data/com.termux/files/usr/include -I/data/data/com.termux/files/usr/include/libxml2 -I/usr/include/libxml2 -c /data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.c -o data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.o
In file included from /data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.c:1:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xpath.h:26:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xmlerror.h:10:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/parser.h:810:
/data/data/com.termux/files/usr/include/libxml2/libxml/encoding.h:28:10: fatal error: 'iconv.h' file not found
#include <iconv.h>
^~~~~~~~~
1 error generated.
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: command 'aarch64-linux-android-clang' failed with exit status 1
----------------------------------------
ERROR: Command "/data/data/com.termux/files/usr/bin/python -u -c 'import setuptools, tokenize;file='"'"'/data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /data/data/com.termux/files/usr/tmp/pip-record-y296du61/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/
pip install lxml fails with the following error:-
running setup.py install for lxml ... error
ERROR: Complete output from command /data/data/com.termux/files/usr/bin/python -u -c 'import setuptools, tokenize;file='"'"'/data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /data/data/com.termux/files/usr/tmp/pip-record-y296du61/install-record.txt --single-version-externally-managed --compile:
ERROR: Building lxml version 4.3.3.
Building without Cython.
Using build configuration of libxslt 1.1.33
Building against libxml2/libxslt in the following directory: /data/data/com.termux/files/usr/lib
running install
running build
running build_py
creating build
creating build/lib.linux-aarch64-3.7
creating build/lib.linux-aarch64-3.7/lxml
copying src/lxml/sax.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/pyclasslookup.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/usedoctest.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/init.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/cssselect.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/ElementInclude.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/_elementpath.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/builder.py -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/doctestcompare.py -> build/lib.linux-aarch64-3.7/lxml
creating build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/init.py -> build/lib.linux-aarch64-3.7/lxml/includes
creating build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/defs.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/diff.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/builder.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/clean.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/init.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.linux-aarch64-3.7/lxml/html
copying src/lxml/html/formfill.py -> build/lib.linux-aarch64-3.7/lxml/html
creating build/lib.linux-aarch64-3.7/lxml/isoschematron
copying src/lxml/isoschematron/init.py -> build/lib.linux-aarch64-3.7/lxml/isoschematron
copying src/lxml/etree.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/etree_api.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/lxml.etree.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.linux-aarch64-3.7/lxml
copying src/lxml/includes/xinclude.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/etreepublic.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/init.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/c14n.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.linux-aarch64-3.7/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.linux-aarch64-3.7/lxml/includes
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/rng
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl
creating build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_skeleton_for_xslt1.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-aarch64-3.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.linux-aarch64-3.7
creating build/temp.linux-aarch64-3.7/src
creating build/temp.linux-aarch64-3.7/src/lxml
aarch64-linux-android-clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Oz -Oz -fPIC -DCYTHON_CLINE_IN_TRACEBACK=0 -I/data/data/com.termux/files/usr/include -I/data/data/com.termux/files/usr/include/libxml2 -Isrc -Isrc/lxml/includes -I/data/data/com.termux/files/usr/include/python3.7m -c src/lxml/etree.c -o build/temp.linux-aarch64-3.7/src/lxml/etree.o -w
In file included from src/lxml/etree.c:687:
In file included from src/lxml/includes/etree_defs.h:186:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/tree.h:1307:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xmlmemory.h:218:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/threads.h:35:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/globals.h:18:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/parser.h:810:
/data/data/com.termux/files/usr/include/libxml2/libxml/encoding.h:28:10: fatal error: 'iconv.h' file not found
#include <iconv.h>
^~~~~~~~~
1 error generated.
Compile failed: command 'aarch64-linux-android-clang' failed with exit status 1
creating data
creating data/data
creating data/data/com.termux
creating data/data/com.termux/files
creating data/data/com.termux/files/usr
creating data/data/com.termux/files/usr/tmp
cc -I/data/data/com.termux/files/usr/include -I/data/data/com.termux/files/usr/include/libxml2 -I/usr/include/libxml2 -c /data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.c -o data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.o
In file included from /data/data/com.termux/files/usr/tmp/xmlXPathInitmcb084gu.c:1:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xpath.h:26:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/xmlerror.h:10:
In file included from /data/data/com.termux/files/usr/include/libxml2/libxml/parser.h:810:
/data/data/com.termux/files/usr/include/libxml2/libxml/encoding.h:28:10: fatal error: 'iconv.h' file not found
#include <iconv.h>
^~~~~~~~~
1 error generated.
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: command 'aarch64-linux-android-clang' failed with exit status 1
----------------------------------------
ERROR: Command "/data/data/com.termux/files/usr/bin/python -u -c 'import setuptools, tokenize;file='"'"'/data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /data/data/com.termux/files/usr/tmp/pip-record-y296du61/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /data/data/com.termux/files/usr/tmp/pip-install-fe2wm8xs/lxml/