65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
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From b47f6a50925efb8c8707b1faed5561a4b66ffdb1 Mon Sep 17 00:00:00 2001
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From: Samuel Martin <s.martin49@gmail.com>
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Date: Sun, 24 Apr 2016 18:45:27 +0200
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Subject: [PATCH] Link libyajl{,_s} with libm when isnan is not brought by the
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libc
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Check whether isnan is provided by the libc library, otherwise make sure
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yajl libraries are link against libm.
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Note that setting libm as PUBLIC link libraries enable the transitivity
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[1, 2]; therefore it will be automatically passed to target linking
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against libyajl{,_s}.
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This patch also makes sure the link libraries will appear in the yajl.pc
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file.
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[1] https://cmake.org/cmake/help/v3.5/command/target_link_libraries.html
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[2] https://cmake.org/cmake/help/v3.5/manual/cmake-buildsystem.7.html#target-usage-requirements
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Signed-off-by: Samuel Martin <s.martin49@gmail.com>
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---
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src/CMakeLists.txt | 10 ++++++++++
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src/yajl.pc.cmake | 2 +-
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2 files changed, 11 insertions(+), 1 deletion(-)
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diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
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index b487bfd..a88698f 100644
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--- a/src/CMakeLists.txt
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+++ b/src/CMakeLists.txt
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@@ -35,11 +35,21 @@ SET (shareDir ${CMAKE_CURRENT_BINARY_DIR}/../${YAJL_DIST_NAME}/share/pkgconfig)
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# set the output path for libraries
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SET(LIBRARY_OUTPUT_PATH ${libDir})
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+SET(yajl_lib_link)
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+INCLUDE(CheckLibraryExists)
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+CHECK_LIBRARY_EXISTS(c isnan "" HAVE_LIBC_ISNAN)
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+
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+IF(NOT HAVE_LIBC_ISNAN)
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+ LIST(APPEND yajl_lib_link "-lm")
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+ENDIF(NOT HAVE_LIBC_ISNAN)
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+
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ADD_LIBRARY(yajl_s STATIC ${SRCS} ${HDRS} ${PUB_HDRS})
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SET_TARGET_PROPERTIES(yajl_s PROPERTIES OUTPUT_NAME yajl)
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+TARGET_LINK_LIBRARIES(yajl_s PUBLIC ${yajl_lib_link})
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IF(BUILD_SHARED_LIBS)
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ADD_LIBRARY(yajl SHARED ${SRCS} ${HDRS} ${PUB_HDRS})
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+TARGET_LINK_LIBRARIES(yajl PUBLIC ${yajl_lib_link})
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#### setup shared library version number
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SET_TARGET_PROPERTIES(yajl PROPERTIES
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diff --git a/src/yajl.pc.cmake b/src/yajl.pc.cmake
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index 6eaca14..4681dd4 100644
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--- a/src/yajl.pc.cmake
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+++ b/src/yajl.pc.cmake
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@@ -6,4 +6,4 @@ Name: Yet Another JSON Library
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Description: A Portable JSON parsing and serialization library in ANSI C
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Version: ${YAJL_MAJOR}.${YAJL_MINOR}.${YAJL_MICRO}
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Cflags: -I${dollar}{includedir}
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-Libs: -L${dollar}{libdir} -lyajl
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+Libs: -L${dollar}{libdir} -lyajl ${yajl_lib_link}
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--
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2.8.0
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