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Remove -fPIC flag from build system.

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This remove the `-fPIC` flag, indicating position independant code
generation, from the build system.

Citing GCC's official code generation docs:

> This option makes a difference on the m68k, PowerPC and SPARC.

We do not support any of these architectures, so remove the flag!

References:

- https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
This commit is contained in:
Daniel J. Hofmann 2015-09-04 17:04:53 +02:00
parent 06f2738c03
commit 9e20dbe226
1 changed files with 2 additions and 2 deletions
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4
CMakeLists.txt
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@ -155,7 +155,7 @@ endif()
if(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
# using Clang
# -Weverything -Wno-c++98-compat -Wno-shadow -Wno-exit-time-destructors
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -Wuninitialized -Wunreachable-code -Wstrict-overflow=3 -D_FORTIFY_SOURCE=2 -fPIC")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -Wuninitialized -Wunreachable-code -Wstrict-overflow=3 -D_FORTIFY_SOURCE=2")
elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
set(COLOR_FLAG "-fdiagnostics-color=auto")
check_cxx_compiler_flag("-fdiagnostics-color=auto" HAS_COLOR_FLAG)
@ -163,7 +163,7 @@ elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
set(COLOR_FLAG "")
endif()
# using GCC
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -Wuninitialized -Wunreachable-code -Wstrict-overflow=3 -D_FORTIFY_SOURCE=2 -fPIC ${COLOR_FLAG}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -Wuninitialized -Wunreachable-code -Wstrict-overflow=3 -D_FORTIFY_SOURCE=2 ${COLOR_FLAG}")
if(WIN32) # using mingw
add_definitions(-D_USE_MATH_DEFINES) # define M_PI, M_1_PI etc.
add_definitions(-DWIN32)