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Merge pull request #634 from micahsnyder/json-c-fPIC

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Issue #508: `-fPIC` to link libjson-c.a with libs
This commit is contained in:
Eric Hawicz
2020-06-14 17:56:35 -04:00
committed by GitHub
parent bc06f82f85 60494684a1
commit 401b29c021
2 changed files with 9 additions and 0 deletions
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8
CMakeLists.txt
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@@ -110,6 +110,14 @@ if (MSVC)
list(APPEND CMAKE_REQUIRED_FLAGS /wd4996)
endif()
if (NOT DISABLE_STATIC_FPIC)
# Use '-fPIC'/'-fPIE' option.
# This will allow other libraries to statically link in libjson-c.a
# which in turn prevents crashes in downstream apps that may use
# a different JSON library with identical symbol names.
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()
check_include_file("fcntl.h" HAVE_FCNTL_H)
check_include_file("inttypes.h" HAVE_INTTYPES_H)
check_include_file(stdarg.h HAVE_STDARG_H)

1
README.md
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@@ -99,6 +99,7 @@ CMAKE_INSTALL_PREFIX | String | The install location.
CMAKE_BUILD_TYPE | String | Defaults to "debug".
BUILD_SHARED_LIBS | Bool | The default build generates a dynamic (dll/so) library. Set this to OFF to create a static library only.
BUILD_STATIC_LIBS | Bool | The default build generates a static (lib/a) library. Set this to OFF to create a shared library only.
DISABLE_STATIC_FPIC | Bool | The default builds position independent code. Set this to OFF to create a shared library only.
DISABLE_BSYMBOLIC | Bool | Disable use of -Bsymbolic-functions.
DISABLE_THREAD_LOCAL_STORAGE | Bool | Disable use of Thread-Local Storage (HAVE___THREAD).
DISABLE_WERROR | Bool | Disable use of -Werror.