https://bugs.gentoo.org/829690

See https://github.com/silnrsi/graphite/pull/44.

Drop -nodefaultlibs:
- graphite is written in C++ which makes avoiding libstdc++ (or libc++) a dubious
  goal;
- this ends up breaking e.g. x86/musl because we need to inject -lssp_nonshared,
  but it wouldn't be surprising if it broke other exotic targets too.
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -105,7 +105,7 @@ set_target_properties(graphite2 PROPERTIES  PUBLIC_HEADER "${GRAPHITE_HEADERS}"
 if  (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     set_target_properties(graphite2 PROPERTIES
         COMPILE_FLAGS   "-Wall -Wextra -Wno-unknown-pragmas -Wendif-labels -Wshadow -Wctor-dtor-privacy -Wnon-virtual-dtor -fno-rtti -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden"
-        LINK_FLAGS      "-nodefaultlibs ${GRAPHITE_LINK_FLAGS}"
+        LINK_FLAGS      "${GRAPHITE_LINK_FLAGS}"
         LINKER_LANGUAGE C)
     if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86|i.86")
         add_definitions(-mfpmath=sse -msse2)
@@ -135,7 +135,6 @@ endif()
 if  (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
     set_target_properties(graphite2 PROPERTIES
         COMPILE_FLAGS   "-Wall -Wextra -Wno-unknown-pragmas -Wimplicit-fallthrough -Wendif-labels -Wshadow -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -fno-rtti -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden"
-        LINK_FLAGS      "-nodefaultlibs"
         LINKER_LANGUAGE C)
     if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86|i.86")
         add_definitions(-mfpmath=sse -msse2)
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -47,12 +47,12 @@ else (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
     set_target_properties(graphite2-base PROPERTIES
         COMPILE_FLAGS       "-Wall -Wextra -Wno-class-memaccess -fno-rtti -fno-exceptions"
         COMPILE_DEFINITIONS "GRAPHITE2_NTRACING"
-        LINK_FLAGS          "-nodefaultlibs ${GRAPHITE_LINK_FLAGS}"
+        LINK_FLAGS          "${GRAPHITE_LINK_FLAGS}"
         LINKER_LANGUAGE     C)
     set_target_properties(graphite2-file PROPERTIES
         COMPILE_FLAGS       "-Wall -Wextra  -Wno-class-memaccess -fno-rtti -fno-exceptions"
         COMPILE_DEFINITIONS "GRAPHITE2_NTRACING${TELEMETRY}"
-        LINK_FLAGS          "-nodefaultlibs ${GRAPHITE_LINK_FLAGS}"
+        LINK_FLAGS          "${GRAPHITE_LINK_FLAGS}"
         LINKER_LANGUAGE     C)
 endif()