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cmake: create configurehelp.pm like autotools does

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Required by tests 1119 and 1167 to run a C preprocessor.

Tested OK: https://github.com/curl/curl/actions/runs/9915343826

Besides Apple, it also supports any gcc and clang builds, and MSVC.
For other platforms, it defaults to `cpp` (like autotools).

Follow-up to efc2c5184d #14124
Cherry-picked from #14097
Closes #14129
This commit is contained in:
Viktor Szakats 2024-07-08 18:32:34 +02:00
parent d2ef6255f4
commit c09db8b51b
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1 changed files with 39 additions and 0 deletions
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39
tests/CMakeLists.txt
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@ -45,6 +45,45 @@ function(add_runtests targetname test_flags)
)
endfunction()
# Create configurehelp.pm, used by tests needing to run the C preprocessor.
if(MSVC OR CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
set(_cpp_cmd "\"${CMAKE_C_COMPILER}\" -E")
if(APPLE AND NOT CMAKE_OSX_SYSROOT STREQUAL "")
set(_cpp_cmd "${_cpp_cmd} -isysroot ${CMAKE_OSX_SYSROOT}")
endif()
# Add header directories, like autotools builds do.
get_property(_include_dirs TARGET ${LIB_SELECTED} PROPERTY INCLUDE_DIRECTORIES)
foreach(_include_dir IN LISTS _include_dirs)
set(_cpp_cmd "${_cpp_cmd} -I${_include_dir}")
endforeach()
else()
set(_cpp_cmd "cpp")
endif()
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/configurehelp.pm" "# This is a generated file. Do not edit.
package configurehelp;
use strict;
use warnings;
use Exporter;
use vars qw(
@ISA
@EXPORT_OK
\$Cpreprocessor
);
@ISA = qw(Exporter);
@EXPORT_OK = qw(
\$Cpreprocessor
);
\$Cpreprocessor = '${_cpp_cmd}';
1;
")
add_runtests(test-quiet "-a -s")
add_runtests(test-am "-a -am")
add_runtests(test-full "-a -p -r")