From: Benjamin Barenblat <bbaren@google.com>
Subject: Check printf format strings in str_format_convert_test
Forwarded: yes
Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/1963f10ae5cb32a7ea6d96b928f69d3c7fba0139
Bug-Debian: https://bugs.debian.org/1011294

Don’t use generator expression to build .pc Libs lines

When building pkg-config files, compute linker flags with a string
substitution rather than the JOIN generator expression. This ensures
that commas in linker flags don’t get treated as argument separators in
JOIN.

The author works at Google. Upstream applied this patch as Piper
revision 450675966 and exported it to GitHub; the Applied-Upstream URL
above points to the exported commit.

--- a/CMake/AbseilHelpers.cmake
+++ b/CMake/AbseilHelpers.cmake
@@ -167,6 +167,7 @@
           set(PC_CFLAGS "${PC_CFLAGS} ${cflag}")
         endif()
       endforeach()
+      string(REPLACE ";" " " PC_LINKOPTS "${ABSL_CC_LIB_LINKOPTS}")
       FILE(GENERATE OUTPUT "${CMAKE_BINARY_DIR}/lib/pkgconfig/absl_${_NAME}.pc" CONTENT "\
 prefix=${CMAKE_INSTALL_PREFIX}\n\
 exec_prefix=\${prefix}\n\
@@ -178,7 +179,7 @@
 URL: https://abseil.io/\n\
 Version: ${PC_VERSION}\n\
 Requires:${PC_DEPS}\n\
-Libs: -L\${libdir} $<JOIN:${ABSL_CC_LIB_LINKOPTS}, > $<$<NOT:$<BOOL:${ABSL_CC_LIB_IS_INTERFACE}>>:-labsl_${_NAME}>\n\
+Libs: -L\${libdir} ${PC_LINKOPTS} $<$<NOT:$<BOOL:${ABSL_CC_LIB_IS_INTERFACE}>>:-labsl_${_NAME}>\n\
 Cflags: -I\${includedir}${PC_CFLAGS}\n")
       INSTALL(FILES "${CMAKE_BINARY_DIR}/lib/pkgconfig/absl_${_NAME}.pc"
               DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")