diff --git a/pkgs/development/libraries/science/math/lcalc/default.nix b/pkgs/development/libraries/science/math/lcalc/default.nix
new file mode 100644
index 00000000000..90393cff001
--- /dev/null
+++ b/pkgs/development/libraries/science/math/lcalc/default.nix
@@ -0,0 +1,78 @@
+{ stdenv
+, fetchurl
+, fetchpatch
+, pari
+}:
+
+stdenv.mkDerivation rec {
+  version = "1.23";
+  pname = "lcalc";
+  name = "${pname}-${version}";
+
+  src = fetchurl {
+    # original at http://oto.math.uwaterloo.ca/~mrubinst/L_function_public/CODE/L-${version}.tar.gz, no longer available
+    # "newer" version at google code https://code.google.com/archive/p/l-calc/source/default/source
+    url = "http://mirrors.mit.edu/sage/spkg/upstream/lcalc/lcalc-${version}.tar.bz2";
+    sha256 = "1c6dsdshgxhqppjxvxhp8yhpxaqvnz3d1mlh26r571gkq8z2bm43";
+  };
+
+  preConfigure = "cd src";
+
+  buildInputs = [
+    pari
+  ];
+
+  patches = [
+    # Port to newer pari
+    (fetchpatch {
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/lcalc/patches/pari-2.7.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
+      sha256 = "1x3aslldm8njjm7p9g9s9w2c91kphnci2vpkxkrcxfihw3ayss6c";
+    })
+
+    # Uncomment the definition of lcalc_to_double(const long double& x).
+    # (Necessary for GCC >= 4.6.0, cf. https://trac.sagemath.org/ticket/10892)
+    (fetchpatch {
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/lcalc/patches/Lcommon.h.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
+      sha256 = "0g4ybvsrcv48rmlh1xjnkms19jp25k58azv6ds1f2cm34hxs8fdx";
+    })
+
+    # Include also <time.h> in Lcommandline_numbertheory.h (at least required
+    # on Cygwin, cf. https://trac.sagemath.org/ticket/9845)
+    (fetchpatch {
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/lcalc/patches/time.h.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
+      sha256 = "1brf04n11kkc43ylagf8dm32j5r2g9zv51dp5wag1mpm4p04l7cl";
+    })
+
+    # Fix for gcc >4.6
+    (fetchpatch {
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/lcalc/patches/lcalc-1.23_default_parameters_1.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
+      sha256 = "0i2yvxm5fx4z0v6m4srgh8rj98kijmlvyirlxf1ky0bp2si6bpka";
+    })
+
+    # gcc 5.1
+    (fetchpatch {
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/lcalc/patches/lcalc-1.23_default_parameters_2.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
+      sha256 = "0dqwmxpm9wb53qbypsyfkgsvk2f8nf67sydphd4dkc2vw4yz6vlh";
+    })
+
+    # based on gentoos makefile patch -- fix paths, adhere to flags
+    ./makefile.patch
+  ];
+
+  installFlags = [
+    "DESTDIR=$(out)"
+  ];
+
+  makeFlags = [
+    "PARI_DEFINE=-DINCLUDE_PARI"
+    "PARI_PREFIX=${pari}"
+  ];
+
+  meta = with stdenv.lib; {
+    homepage = http://oto.math.uwaterloo.ca/~mrubinst/L_function_public/L.html;
+    description = "A program for calculating with L-functions";
+    license = with licenses; [ gpl2 ];
+    maintainers = with maintainers; [ timokau ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/development/libraries/science/math/lcalc/makefile.patch b/pkgs/development/libraries/science/math/lcalc/makefile.patch
new file mode 100644
index 00000000000..f55bbe3f24f
--- /dev/null
+++ b/pkgs/development/libraries/science/math/lcalc/makefile.patch
@@ -0,0 +1,113 @@
+diff --git a/src/Makefile b/src/Makefile
+index 84e4e88..56ca676 100644
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -58,7 +58,7 @@ ifeq ($(G5),TRUE)
+    #MACHINE_SPECIFIC_FLAGS = -mpowerpc -mpowerpc64 -m64
+ endif
+ 
+-CCFLAGS =  -Wa,-W -O3 $(OPENMP_FLAG) -Wno-deprecated $(PREPROCESSOR_DEFINE) $(MACHINE_SPECIFIC_FLAGS) $(EXTRA)
++CCFLAGS = $(CXXFLAGS) $(OPENMP_FLAG) $(PREPROCESSOR_DEFINE) $(MACHINE_SPECIFIC_FLAGS)
+ #CCFLAGS =  -Wa,-W -O3 $(OPENMP_FLAG)  $(PREPROCESSOR_DEFINE) $(MACHINE_SPECIFIC_FLAGS) $(EXTRA)
+ #CCFLAGS =  -Wa,-W -O2 -fno-exceptions -Wno-deprecated $(PREPROCESSOR_DEFINE) $(MACHINE_SPECIFIC_FLAGS) $(EXTRA)
+ 
+@@ -68,12 +68,12 @@ CCFLAGS =  -Wa,-W -O3 $(OPENMP_FLAG) -Wno-deprecated $(PREPROCESSOR_DEFINE) $(MA
+ 
+ ifeq ($(PARI_DEFINE),-DINCLUDE_PARI)
+     #location of pari.h.
+-    LOCATION_PARI_H = /usr/local/include/pari #usual location
++    LOCATION_PARI_H = $(PARI_PREFIX)/include/pari #usual location
+ 
+     #location of libpari.a or of libpari.so
+     #depending on whether static or dynamic libraries are being used.
+     #On mac os x it's the former, on linux I think usually the latter.
+-    LOCATION_PARI_LIBRARY = /usr/local/lib #usual location
++    LOCATION_PARI_LIBRARY = $(PARI_PREFIX)/lib #usual location
+ else
+     #supplied as a dummy so as to avoid more ifeq's below
+     LOCATION_PARI_H = .
+@@ -89,24 +89,24 @@ INCLUDEFILES= -I../include
+ 
+ ifeq ($(OS_NAME),Darwin)
+     LDFLAGS2 =
+-    DYN_OPTION=dynamiclib
++    DYN_OPTION=-dynamiclib
+ else
+-    LDFLAGS1 = -Xlinker -export-dynamic #not sure why pari calls these when linking but on the web I found
++    LDFLAGS1 = #not sure why pari calls these when linking but on the web I found
+     #'Libtool provides the `-export-dynamic' link flag (see section Link mode), which does this declaration.
+     #You need to use this flag if you are linking a shared library that will be dlopened'
+     #see notes below
+     #ifeq ($(PARI_DEFINE),-DINCLUDE_PARI)
+-       LDFLAGS2 = $(LDFLAGS1) -Xlinker -rpath -Xlinker $(LOCATION_PARI_LIBRARY)
++       LDFLAGS2 = $(LDFLAGS)
+     #else
+     #    LDFLAGS2 = $(LDFLAGS1)
+     #endif
+-    DYN_OPTION=shared
++    DYN_OPTION=$(LDFLAGS) -shared -Wl,-soname,libLfunction.so
+ endif
+ 
+ ifeq ($(PARI_DEFINE),-DINCLUDE_PARI)
+-    LDFLAGS = $(LDFLAGS2) -L$(LOCATION_PARI_LIBRARY) -lpari
++    MYLDFLAGS = $(LDFLAGS2) -L$(LOCATION_PARI_LIBRARY) -lpari
+ else
+-    LDFLAGS = $(LDFLAGS2)
++    MYLDFLAGS = $(LDFLAGS2)
+ endif
+ 
+ 
+@@ -129,7 +129,8 @@ endif
+ #become clear which libraries the computer can find.
+ 
+ 
+-INSTALL_DIR= /usr/local
++INSTALL_DIR= $(DESTDIR)
++LIB_DIR ?=lib
+ 
+ #object files for the libLfunction library
+ OBJ_L = Lglobals.o Lgamma.o Lriemannsiegel.o Lriemannsiegel_blfi.o Ldokchitser.o
+@@ -141,9 +142,8 @@ OBJECTS = $(OBJ3)
+ 
+ all:
+ #	make print_vars
+-	make libLfunction.so
+-	make lcalc
+-	make examples
++	${MAKE} libLfunction.so
++	${MAKE} lcalc
+ #	make find_L
+ #	make test
+ 
+@@ -151,7 +151,7 @@ print_vars:
+ 	@echo OS_NAME = $(OS_NAME)
+ 
+ lcalc: $(OBJECTS)
+-	$(CC) $(CCFLAGS) $(INCLUDEFILES) $(OBJECTS) $(LDFLAGS) -o lcalc $(GMP_FLAGS)
++	$(CC) $(CCFLAGS) $(INCLUDEFILES) $(OBJECTS) $(MYLDFLAGS) -o lcalc $(GMP_FLAGS)
+ 
+ examples:
+ 	$(CC) $(CCFLAGS) $(INCLUDEFILES) example_programs/example.cc libLfunction.so -o example_programs/example $(GMP_FLAGS)
+@@ -262,15 +262,18 @@ Lcommandline.o: ../include/Lcommandline_values_zeros.h
+ 
+ 
+ libLfunction.so: $(OBJ_L)
+-	g++ -$(DYN_OPTION)  -o libLfunction.so $(OBJ_L)
++	g++ $(DYN_OPTION) -o libLfunction.so $(OBJ_L)
+ 
+ clean:
+ 	rm -f *.o lcalc libLfunction.so example_programs/example
+ 
+ install:
+-	cp -f lcalc $(INSTALL_DIR)/bin/.
+-	cp -f libLfunction.so $(INSTALL_DIR)/lib/.
+-	cp -rf ../include $(INSTALL_DIR)/include/Lfunction
++	install -d $(INSTALL_DIR)/bin
++	install -d $(INSTALL_DIR)/$(LIB_DIR)
++	install -d $(INSTALL_DIR)/include/libLfunction
++	install lcalc $(INSTALL_DIR)/bin
++	install libLfunction.so $(INSTALL_DIR)/$(LIB_DIR)
++	install -m 644 -t $(INSTALL_DIR)/include/libLfunction ../include/*.h
+ 
+ 
+ SRCS = Lcommandline.cc Lcommandline_elliptic.cc Lcommandline_globals.cc Lcommandline_misc.cc Lcommandline_numbertheory.cc Lcommandline_twist.cc Lcommandline_values_zeros.cc Lgamma.cc Lglobals.cc Lmisc.cc Lriemannsiegel.cc Lriemannsiegel_blfi.cc cmdline.c
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0a844693fe3..6566cf40e9e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -19903,6 +19903,8 @@ with pkgs;
     docs = true;
   };
 
+  lcalc = callPackage ../development/libraries/science/math/lcalc { };
+
   lrcalc = callPackage ../applications/science/math/lrcalc { };
 
   lie = callPackage ../applications/science/math/LiE { };