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cmake: Use CMAKE_SHARED_LIBRARY_C_FLAGS in version script checks

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Building the version script test executable may fail in the link step
with GNU ld as linker like this:

  ld: final link failed: Nonrepresentable section on output

Building the test excutable with CMAKE_SHARED_LIBRARY_C_FLAGS makes the
test succeed with GNU ld since this adds -fpic/-fPIC.

Signed-off-by: Cosmin Truta <ctruta@gmail.com>
This commit is contained in:
Gunther Nikl 2023-01-31 18:19:46 +01:00 committed by Cosmin Truta
parent cd0ea2a7f5
commit aeb26da4cb
1 changed files with 9 additions and 2 deletions
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11
CMakeLists.txt
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@ -21,6 +21,7 @@
# Revised by Christopher Sean Morrison, 2022
# Revised by Martin Storsjo, 2022
# Revised by Jon Creighton, 2023
# Revised by Gunther Nikl, 2023
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
@ -243,13 +244,19 @@ VERS_2 {
} VERS_1;
")
set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
set(CMAKE_REQUIRED_FLAGS
${CMAKE_REQUIRED_FLAGS}
${CMAKE_SHARED_LIBRARY_C_FLAGS}
"-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
check_c_source_compiles("void sym(void) {}
void sym2(void) {}
int main(void) {return 0;}
" HAVE_LD_VERSION_SCRIPT)
if(NOT HAVE_LD_VERSION_SCRIPT)
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE} "-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
set(CMAKE_REQUIRED_FLAGS
${CMAKE_REQUIRED_FLAGS_SAVE}
${CMAKE_SHARED_LIBRARY_C_FLAGS}
"-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
check_c_source_compiles("void sym(void) {}
void sym2(void) {}
int main(void) {return 0;}